Abstract

Method for electrically connecting two electrical cables (12, 14) using a conductive connecting connector (10) that is overall cylindrical in shape comprising a cable pass (17) extending along a longitudinal axis (L), the connector (10) comprising, at each axial end, an opening (22) leading to the cable pass (17), the connector (10) comprising first (31) and second (33) compression means that are provided to compress the exposed free ends (18) of the two electrical cables (12, 14), each compression means (31, 33) extending through the body (11) of the connector (10), the first compression means (31) comprising two first compression members (24, 30), the method comprising the steps of inserting the exposed ends (18) of the two cables (12, 14) into the cable pass (17) via the two respective axial openings (22), the method being characterized in that it comprises the steps of compressing each exposed end (39) that is adjacent to the insulating sheath (16) of the two cables in the cable pass (17) by means of the two first compression members (24, 30) until obtaining a decrease in the cross section of the exposed ends (39) that are adjacent to the insulating sheaths (16) by between 15% and 40%, preferably between 20% and 30%, compressing the exposed free ends (40) of the two cables (12, 14) in the cable pass (17) by means of the second compression means (33) in order to obtain a decrease in the cross section of the exposed free ends (40) by between 45% and 65%, preferably between 50% and 60%.

IPC Classes  ?

• H01R 4/36 - Conductive members located under tip of screw
• H01R 31/06 - Intermediate parts for linking two coupling parts, e.g. adapter
• H01R 43/04 - Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for forming connections by deformation, e.g. crimping tool

Abstract

The invention relates to an electrical connecting line comprising a cable (10) having a plurality of wires (14) and an insulation (12) radially enclosing the wires, wherein the insulation is removed along an end section (16), a partial section (20) of the end section is bent such that the end surfaces (18) of the wires are aligned toward the insulation, a cable lug (24) and a wire crimp section (26), wherein the wire crimp section is crimped, at least in regions, about the wires of the end section (16) and the partial section (20) of the cable, wherein the end surfaces (18) of the wires lie within the wire crimp section.

IPC Classes  ?

• H01R 4/18 - Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping
• H01R 43/05 - Crimping apparatus or processes with wire-insulation stripping

Abstract

Connector for motor vehicle comprising a female contact (40) comprising flexible tabs (48) intended to apply a contact force to a male contact (50). The female contact (40) moves in the housing (12) between a rear position and a forward position. The tabs (48) are in contact with the male contact (50) when the female contact (40) is in the rear position. When the female contact (40) is in the forward position, chamfers part the tabs (48) in order to separate them from the male contact (50).

IPC Classes  ?

• H01R 13/11 - Resilient sockets
• H01R 13/20 - Pins, blades, or sockets shaped, or provided with separate member, to retain co-operating parts together

Abstract

The invention relates to a female electrical contact (1) produced by cutting and folding a strip of electrically conductive material. It comprises a connection body (4) with a tubular contact section (6) into which a male contact tongue can be inserted. Two of the lateral walls (14a, 14b) of the contact section (6) each comprise a window (25, 65). Optionally, a lateral support (21) extends into at least one of these windows and supports a contact blade (18). This lateral support (21) includes sinuosities in order to endow it with more elasticity. For example, it takes the shape of an "S".

IPC Classes  ?

• H01R 13/11 - Resilient sockets
• H01R 13/187 - Pins, blades or sockets having separate spring member for producing or increasing contact pressure the spring member being in the socket

Abstract

The invention relates to a female electrical contact (1) produced by cutting and bending a sheet of electrically conductive material. The invention comprises a connection body (4) including a tabular contact section (6) in which a tab (7) of a male contact (3) can be inserted. An upper bar (11) comprises a support area (30) interacting with a contact blade (18) in order to increase the normal contact force on the tab (7) during insertion thereof into the contact section (6).

IPC Classes  ?

• H01R 13/11 - Resilient sockets
• H01R 13/15 - Pins, blades or sockets having separate spring member for producing or increasing contact pressure
• H01R 13/193 - Means for increasing contact pressure at the end of engagement of coupling part
• H01R 13/432 - Securing in a demountable manner by locking means on resilient contact members by stamped-out resilient tongue snapping behind shoulder in base or case

Abstract

The invention relates to a female electrical contact (1) produced by cutting and folding a strip of electrically conductive material. It comprises a connection body (4) with a tubular contact section (6) into which a male contact tongue can be inserted. In order to increase the normal contact force, provision is made for a contact blade (18) with a width (D) such that it extends into a window (25) made in at least one of the lateral walls (14a, 14b).

IPC Classes  ?

• H01R 13/11 - Resilient sockets
• H01R 13/187 - Pins, blades or sockets having separate spring member for producing or increasing contact pressure the spring member being in the socket

Abstract

The invention relates to a female electrical contact (1) produced by cutting and bending a sheet of electrically conductive material. The invention comprises a connection body (4) including a tubular contact section (6) into which a male contact blade can be inserted. The invention also comprises a catch (10) and an upper bar (11) above the contact section (6), at least partially limiting the movements of the catch (10) relative to the contact section (6).

IPC Classes  ?

• H01R 13/432 - Securing in a demountable manner by locking means on resilient contact members by stamped-out resilient tongue snapping behind shoulder in base or case
• H01R 13/11 - Resilient sockets

Abstract

The invention relates to an electrical contact (1) produced by cutting and bending a sheet of electrically conductive material. During bending, a tooth (29a or 29b) made in the sheet is inserted into a cut-out also made in the sheet. At least one fin (39), formed along the edge of the cut-out by drawing and bending, traps the tooth (29a or 29b) in the cut-out such as to hold two regions of the sheet together following folding.

IPC Classes  ?

• H01R 13/11 - Resilient sockets
• H01R 43/16 - Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for manufacturing contact members, e.g. by punching and by bending

Abstract

A female electrical contact for a cable connector including a cage (4) for housing the tongue (3) of a male contact. The cage (4) includes two lateral elastic retaining blades (16) that make it possible to limit the lateral movements of the tongue (3), in particular under the effect of vibrations. These elastic retaining blades (16) may bear on a protective sleeve (6) that surrounds the cage (4) also for the purpose of limiting the movements of the cage (4) within the sleeve (6).

IPC Classes  ?

• H01R 13/11 - Resilient sockets
• H01R 13/115 - U-shaped sockets having inwardly-bent legs
• H01R 13/18 - Pins, blades or sockets having separate spring member for producing or increasing contact pressure with the spring member surrounding the socket

Abstract

A multi-fuel rail apparatus for an internal combustion engine communicates fuel from 10 a first fuel source and a second fuel source to a plurality of fuel injectors. Each fuel injector receives fuel from the multi-fuel rail apparatus through a branch connection for each fuel. The multi fuel rail apparatus has a first elongate member including a first longitudinal bore spaced apart from a second longitudinal bore and first and second fuel inlets for fluidly communicating first and second fuels into the first and 15 second longitudinal bores respectively. There is a branch connecting structure for each fuel injector along the first elongate member for fluidly connecting the first and second longitudinal bores with respective branch connections from respective fuel injectors.

IPC Classes  ?

• F02M 55/00 - Fuel-injection apparatus characterised by their fuel conduits or their venting means
• F02M 43/04 - Injectors peculiar thereto

Abstract

A cap assembly (50) adapted to be fixed on the body member (24) of a pressure regulating valve define an internal cylindrical volume for enclosing a magnetic plunger member (46). The cap assembly (50) comprises a cylindrical magnetic cap member (54) in which is totally inserted a non-magnetic cylindrical tube member, the tube member being adapted to be fixed on the valve body member (24).

IPC Classes  ?

• F02M 63/02 - Fuel-injection apparatus having several injectors fed by a common pumping element, or having several pumping elements feeding a common injector; Fuel-injection apparatus having provisions for cutting-out pumps, pumping elements, or injectors; Fuel-injection apparatus having provisions for variably interconnecting pumping elements and injectors alternatively
• F02M 63/00 - SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF - Details, component parts or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups  or     

Abstract

A pump assembly for delivering high pressure fuel to a fuel injection system comprises: at least one pumping unit having an associated pumping element; a housing (12) defining a chamber (20) for a lubricating fluid provided through a fluid inlet (54); and a drive shaft (14) rotatably mounted in the housing, the drive shaft being rotatable about its longitudinal axis to actuate, by a cam section (40) thereof, the pumping element of the at least one pumping unit, the drive shaft comprising a radial flange (50) protruding in said chamber (20). At least one collecting channel (58) is provided in the flange (50), the collecting channel (58) having an outer end (60) opening into the chamber (20) at the outer periphery of the flange and an inner end (62) in fluid communication with a central channel (64) in the drive shaft. The central channel (64) extends longitudinally in the drive shaft (14) and has an outlet (66) in the vicinity of a fluid outlet (56) of the chamber, whereby the collecting channel (58) and central channel (64) form a back-leak flow path in said drive shaft (14).

IPC Classes  ?

• F02M 59/44 - Pumps specially adapted for fuel-injection and not provided for in groups - Details, component parts, or accessories not provided for in, or of interest apart from, the apparatus of groups
• F04B 53/18 - Lubricating

Abstract

The present disclosure relates to a hydraulic head assembly (1) having a hydraulic head (2) and an adapter (21). The hydraulic head (2) has a first bore (5) and a pumping chamber (6). The adapter (21) has a second bore (31). The adapter (21) is connected to hydraulic head (2) such that said first and second bores (5, 31) are disposed coaxially to form a pumping element bore. A pumping element (7) is disposed within said first and second bores (5, 31) for pressurising fuel in the pumping chamber (6). A first seal (16) is formed between the pumping element (7) and the hydraulic head (2); and a second seal (17) is formed between the pumping element (7) and the adapter (21). The present disclosure also relates to a pump (P2) incorporating the hydraulic head assembly (1) described herein. The present disclosure also relates to an adapter (21) for mounting to a fuel pump (1).

IPC Classes  ?

• F02M 59/44 - Pumps specially adapted for fuel-injection and not provided for in groups - Details, component parts, or accessories not provided for in, or of interest apart from, the apparatus of groups
• F04B 1/04 - Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
• F02M 59/48 - Assembling; Disassembling; Replacing

Abstract

A header for a fuel injector, said header being connectable to a fuel injector main body, wherein said header includes a sensor adapted to measure one or more parameters of the fuel injector during operation thereof.

IPC Classes  ?

• F02M 57/00 - Fuel injectors combined or associated with other devices
• F02M 51/00 - Fuel-injection apparatus characterised by being operated electrically
• F02M 61/14 - Arrangements of injectors with respect to engines; Mounting of injectors
• F02M 61/16 - Fuel injectors not provided for in groups  or - Details not provided for in, or of interest apart from, the apparatus of groups

Abstract

The invention discloses a high pressure diesel fuel pump comprising a pumping assembly and a drivetrain assembly (100). The pumping assembly comprises a pump housing and a plunger mounted along a pumping axis (A- A'). The drivetrain assembly (100) comprises 5 a drive shaft (110) and a cam mounted within a cambox (115) of a drivetrain housing (105). The plunger is arranged for reciprocating linear movement along the pumping axis (A- A') within a pumping chamber of the drivetrain housing (105) upon rotation of the cam. The drivetrain assembly (100) further comprises a shoe guide (130) mounted between the cam and the plunger within a guide chamber (120) and being adapted to receive a cam follower for contact with a driven end of the plunger. The shoe guide (130) is adapted to provide at least one flow passage (125) between the shoe guide (130) and an internal wall of the guide chamber (120).

IPC Classes  ?

• F02M 59/10 - Pumps specially adapted for fuel-injection and not provided for in groups of reciprocating-piston type characterised by the piston drive
• F02M 63/00 - SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF - Details, component parts or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups  or     

Abstract

A method of controlling the dosing of a liquid reductant, supplied from a pressurised supply to a solenoid actuated reductant injector for injection into a vehicle exhaust system comprising: a) obtaining a voltage and/or current signal across the actuator solenoid during its activation; b) analysing said signal and determining an opening and/or closing delay from said signal; c) correlating the results of step b) with a pre-stored relationship relating the injector reductant supply pressure to said opening and/or closing delay; and e) controlling the dosing of reductant depending on said determined pressure from step d).

IPC Classes  ?

• F01N 3/20 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion

Abstract

The invention relates to an electrical connector system comprising a plug connector and a second locking device. The plug connector comprises at least one row of terminal cavities for receiving terminals and a plug connector housing having a flexible arm arranged in a sidewall of the plug connector housing, and having primary locking means adapted to provide a primary locking function. The secondary locking device is arranged between an end of the at least one row of terminal cavities and the flexible arm, and has a flexible leg with secondary locking means for providing a secondary locking function. The flexible arm comprises a blocking device and the flexible leg comprises an abutment device adapted to engage with the blocking device for said blocking.

IPC Classes  ?

• H01R 13/627 - Snap-action fastening
• H01R 13/639 - Additional means for holding or locking coupling parts together after engagement

Abstract

The invention relates to a high pressure diesel fuel pump comprising a drivetrain assembly within a drivetrain housing and a pumping assembly. The drivetrain assembly comprises a cam mounted in a cambox, a tappet member arranged for reciprocal movement with the cam within a tappet chamber, and a spring mounted in a spring chamber acting on an upper surface of the tappet member. The pumping assembly comprises a pump housing and a plunger mounted within a bore formed in the pump housing for reciprocal movement along a pumping axis under the influence of the tappet member. The housing comprises a vent arranged to connect said spring chamber and/or said tappet chamber with the cambox and a low pressure inlet for delivery of fluid to the drivetrain assembly, characterised in that the low pressure inlet is arranged to feed into the spring chamber. The invention also covers a drivetrain housing.

IPC Classes  ?

• F04B 1/04 - Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
• F02M 59/10 - Pumps specially adapted for fuel-injection and not provided for in groups of reciprocating-piston type characterised by the piston drive

Abstract

A fuel pump (10) having a head member (12) provided with a blind bore (14) in which a piston (26) is adapted to perform a pumping cycle by reciprocating along the main axis (X1) of the bore (14) between a top dead center (TDC) position and a bottom dead center (BDC) position. The piston (26) reciprocates under the influence of a rotating cam (36) cooperating with a follower assembly (34), a spring (46) compressed between the head member (12) and the follower assembly (34biasing the follower assembly (34) toward the cam (36). The pump (10) further comprises a stopper member (48) having resilient properties and being arranged to generate additional biasing force onto the follower assembly (34) when around TDC.

IPC Classes  ?

• F02M 59/10 - Pumps specially adapted for fuel-injection and not provided for in groups of reciprocating-piston type characterised by the piston drive
• F04B 1/04 - Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
• F04B 9/04 - Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical the means being cams, eccentrics or pin-and-slot mechanisms

Abstract

A body of the control valve (38) of a fuel injector provided with, an inlet line (44) comprising a main inlet conduit (48) extending between two transverse faces (40, 42), and with a restricted inlet conduit (50) extending between an opening (54) in the second transverse face (42), that in use is in fluid communication with a control chamber (36), and the main inlet conduit (48) and with, an outlet line (46) comprising a main outlet conduit (60) extending in the valve body (38) from the second transverse face (42) to a hydraulic bore (64), the opening (72) of said main outlet conduit (60) in the second transverse face (42) being sealed in use by the upper face (20) of a nozzle assembly, and also with a restricted outlet conduit (58) opening in the second transverse face (42) in a place that, in use, is in fluid communication with the control chamber (36), the restricted outlet conduit (58) extending and opening on the main outlet conduit (60). At least one of the restricted inlet conduit (50) or the restricted outlet conduit (58) is a groove formed on the surface of the second transverse face (42) so that, in use, said groove is sealingly covered and closed by the upper face (20) of the nozzle assembly.

IPC Classes  ?

• F02M 47/02 - Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure of accumulator-injector type, i.e. having fuel pressure of accumulator tending to open, and fuel pressure in other chamber tending to close, injection valves, and having means for periodically releasing that closing pressure
• F02M 55/00 - Fuel-injection apparatus characterised by their fuel conduits or their venting means

Abstract

A valve body of the control valve of a fuel injector, said body being provided with an inlet line and with an outlet line in which, in use, fuel flows to a drain. The outlet line comprises a main outlet conduit (50) extending in the valve body, and a restricted outlet conduit (52) joining the main outlet conduit (50). The main outlet conduit (50) has a specific cross section that is non-circular, said cross section having a curvature bigger than the curvature of the restricted outlet conduit (52).

IPC Classes  ?

• F02M 63/00 - SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF - Details, component parts or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups  or     
• F02M 47/02 - Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure of accumulator-injector type, i.e. having fuel pressure of accumulator tending to open, and fuel pressure in other chamber tending to close, injection valves, and having means for periodically releasing that closing pressure

Abstract

The present invention provides an oil lubricated common rail diesel pump (1) comprising a pumping assembly (10) and a drivetrain assembly (20). The pumping assembly (10) comprises a pump housing (12) and a plunger (14) mounted along a pumping axis (Α-Α'). The drivetrain assembly (20) comprises a driveshaft (24) and a cam (26) mounted within a first chamber (28) of a drivetrain housing (22). The plunger (14) is arranged for reciprocating linear movement along the pumping axis (Α-Α') within a second chamber (30) of the housing (22) upon rotation of the cam (26). The drivetrain assembly (20) further comprises a guide (40) mounted within the housing (22) between the cam (26) and the plunger (14) and being adapted to receive a cam follower (16). At least the housing (22) is adapted to be substantially filled with oil in use and the guide (40) comprises at least one flow passage (48) communicating between the first chamber (28) and the second chamber (30).

IPC Classes  ?

• F02M 59/10 - Pumps specially adapted for fuel-injection and not provided for in groups of reciprocating-piston type characterised by the piston drive
• F02M 59/44 - Pumps specially adapted for fuel-injection and not provided for in groups - Details, component parts, or accessories not provided for in, or of interest apart from, the apparatus of groups
• F01M 9/10 - Lubrication of valve gear or auxiliaries
• F04B 1/04 - Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
• F04B 39/02 - Lubrication
• F04B 53/18 - Lubricating
• F02M 63/00 - SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF - Details, component parts or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups  or     

Abstract

An electromagnetic actuator (60) of a pressure-regulating valve (10), the actuator (60) comprising an overmoulded coil connector assembly (62) inserted into an actuator body (64) in the shape of a cylindrical cup. The actuator (60) further comprises a seal (96) arranged between the overmoulded assembly (62) and the actuator body (64) such that the actuator (60) is perfectly sealed.

IPC Classes  ?

• H01F 7/128 - Encapsulating, encasing or sealing
• F16K 31/06 - Operating means; Releasing devices magnetic using a magnet

Abstract

A control valve member (44) of a fuel injector control valve assembly (14) adapted to be arranged in a control valve chamber (42) wherein it is guided in translation along a valve axis (X2) between a closed position forbidding fuel to exit a spill orifice (58) and an open position enabling fuel to exit said spill orifice (58), the control valve member (44) comprising a magnetic armature (102) to which is fixed a seat member (104). The armature (102) is adapted to cooperate with an electromagnetic solenoid (36) in order for the seat member (104) be move between the closed position wherein it is in sealing abutment against a fixed seating face (60), and the open position wherein said seat member (104) is lifted away from said fixed seating face (60). The control valve member (44) further comprises a spring member adapted to guide in translation along the valve axis (X2) the seat member (104) in the control valve chamber (42).

IPC Classes  ?

• F02M 63/00 - SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF - Details, component parts or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups  or     
• F02M 47/02 - Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure of accumulator-injector type, i.e. having fuel pressure of accumulator tending to open, and fuel pressure in other chamber tending to close, injection valves, and having means for periodically releasing that closing pressure
• F16K 31/00 - Operating means; Releasing devices
• F16K 31/06 - Operating means; Releasing devices magnetic using a magnet

Abstract

The present disclosure relates to a damping apparatus (1) for damping pressure waves in a conduit (2). The damping apparatus (1) includes a vessel (5) defining a damping chamber (8) having an internal volume. An inlet (6) and an outlet (7) are provided for connecting the damping chamber (8) in series to the conduit (2). The vessel (5) comprises at least one resiliency deformable plate (9, 10) to enable the internal volume of the damping chamber (8) to change. In use, pressure waves transmitted in the conduit (2) can be damped. The present disclosure also relates to a pump system (3) in combination with a damping apparatus (1).

IPC Classes  ?

• F02M 37/00 - Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
• F02M 55/04 - Means for damping vibrations in injection-pump inlets
• F04B 1/00 - Multi-cylinder machines or pumps characterised by number or arrangement of cylinders

Abstract

The invention relates to a method wherein a contact (100) is crimped to the cable (200), at different heights, in such a way as to obtain a mechanical retention portion (140) and an electrical conduction portion (150). The difference between the final crimping heights of the mechanical retention portion (140) and the electrical conduction portion (150) is between 0.5 and 0.6 mm. The invention also relates to a contact (100) crimped to a cable (200) as a result of the crimping method according to the invention, and to a tool for implementing said method.

IPC Classes  ?

• H01R 4/18 - Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping
• H01R 43/048 - Crimping apparatus or processes

Abstract

A control valve assembly is provided with a deflector arranged in a recess, between a magnetic armature and the bottom face of the recess. The deflector is adapted to deflect away from the under face of the armature the flow of fuel entering the recess when the valve is in open position so that, the displacements of the armature-spool assembly are not disturbed by said entering flow.

IPC Classes  ?

• F02M 47/02 - Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure of accumulator-injector type, i.e. having fuel pressure of accumulator tending to open, and fuel pressure in other chamber tending to close, injection valves, and having means for periodically releasing that closing pressure
• F02M 51/06 - Injectors peculiar thereto
• F02M 63/00 - SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF - Details, component parts or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups  or     
• F02M 55/00 - Fuel-injection apparatus characterised by their fuel conduits or their venting means

Abstract

An actuator assembly of the digital inlet valve for a fuel pump adapted to cooperate with an inlet valve member, the actuator assembly comprising an actuator body in which is fixed a coil, a cover fixedly closing the body and, a magnetic core arranged in a core guiding bore provided in the actuator body. The magnetic core is slidable along a main axis (X) in order, in use, to close an air gap (G142) under the influences of a first compression spring, and of a magnetic field, the core cooperating with the valve member. The air gap is calculated by the formula G142 = A144 - (B146 + T196) where, A144 is an axial dimension intrinsic to the body and, B146 is an axial dimension intrinsic to the cover and, T196 is an axial dimension intrinsic to the magnetic core.

IPC Classes  ?

• F02M 59/36 - Varying fuel delivery in quantity or timing by variably-timed valves controlling fuel passages
• F02M 61/16 - Fuel injectors not provided for in groups  or - Details not provided for in, or of interest apart from, the apparatus of groups

Abstract

The invention relates to a control valve for a control chamber of a fuel injector, which valve includes a body (34) provided with a bore (36); a generally cylindrical jacket (38) inserted into the bore (36) and including an axial passage (40), a cross-section of which defines an inner fuel passage (44) with a sealing seat (50); a sealing rod (42) sliding axially inside the jacket (38) and configured to enable or prevent the flow of fuel downstream from the seat (50), the sealing rod (42) including an actuating end (48) for connecting to an actuating device (28) outside of the jacket. An annular compensation chamber (52) surrounds the jacket (38). The inner fuel passage (44) has an outlet opening (48) located downstream from the sealing seat (50) in the jacket portion opposite the actuating end (48) of the sealing rod (42).

IPC Classes  ?

• F02M 47/02 - Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure of accumulator-injector type, i.e. having fuel pressure of accumulator tending to open, and fuel pressure in other chamber tending to close, injection valves, and having means for periodically releasing that closing pressure
• F02M 63/00 - SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF - Details, component parts or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups  or     

Abstract

A method for manufacturing a common rail (12) adapted to be arranged in a fuel injection system, the common rail (12) having a body (18) provided with a bore (28) defining an internal volume (V), said body (18) extending along a main axis (X) from a first extremity (22) having a first threaded female recess (30) to, a second extremity (26) having a second threaded female recess (44), the bore (28) opening at both ends in one of the recesses (30, 44), the method (100) comprising the steps of a first autofrettage step (130) of said bore (28), an autofrettage fluid (AF) being pressurized to a first pressure (PI) in the bore (28) during this first step (130) and, second autofrettage step (140) for treating the first female threaded recess (30), the autofrettage fluid (AF) being pressurized to a second pressure (P2) in the first recess (30) during this second step (140).

IPC Classes  ?

• F02M 55/02 - Conduits between injection pumps and injectors
• C21D 7/12 - Modifying the physical properties of iron or steel by deformation by cold working of the whole cross-section, e.g. of concrete reinforcing bars by expanding tubular bodies
• F02M 61/16 - Fuel injectors not provided for in groups  or - Details not provided for in, or of interest apart from, the apparatus of groups

Abstract

A plunger assembly (106) for a high pressure fuel pump head (102), wherein an axial internal drilling (116) provided in a first plunger section (110), and a clearance (140) between the first (110) and a second plunger section (120), are exposed to a pumping fuel pressure, and wherein a pressure gradient along an outside wall of the first section (110) and the bore (108), and pressure within the drilling (116) and clearance (140), results in an increasing deformation of the first section (110) and thereby a decreasing clearance between the first section (110) and the bore (108), moving towards the second section (120), thereby providing sealing from one end (160) of the plunger to the opposite end (162).

IPC Classes  ?

• F02M 59/02 - Pumps specially adapted for fuel-injection and not provided for in groups of reciprocating-piston type
• F02M 59/44 - Pumps specially adapted for fuel-injection and not provided for in groups - Details, component parts, or accessories not provided for in, or of interest apart from, the apparatus of groups

Abstract

The present disclosure relates to a control apparatus (1) for controlling supply of a liquid. The control apparatus (1) has a reservoir (3) for storing a liquid. A plurality of like supply conduits (7) are connected to the reservoir (3). A control valve (14) is associated with each of the supply conduits (7). The control valves (14) are operable to control the flow of liquid through that supply conduit. The present disclosure also relates to a method for controlling supply of a liquid.

IPC Classes  ?

• F02M 65/00 - Testing fuel-injection apparatus, e.g. testing injection timing
• G01F 1/00 - Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
• F02D 41/00 - Electrical control of supply of combustible mixture or its constituents

Abstract

A piezoelectric control valve (30) for a servo injector (10) has a piezoelectric actuator (32) which comprises an encapsulating tube (54) extending along a main axis (X) from a first extremity (56) to a second extremity closed by a closing member (58) and, a piezoelectric stack (76) axially compressed inside the encapsulating tube (54) between an upper extremity in contact with the inner face (60) of the closing member (58) and, a lower extremity in contact with a pusher member (78) adapted to cooperate with a valve member (36) in order to open or close a return orifice. The piezoelectric control valve (30) further comprises an adjusting member (64) adapted, in use, to permanently maintain a compression force (Fl) in the encapsulating tube (54) independently of the energizing state of the piezoelectric stack (76) and of the thermal expansion of the injector (10).

IPC Classes  ?

• F02M 63/00 - SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF - Details, component parts or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups  or     
• F02M 47/02 - Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure of accumulator-injector type, i.e. having fuel pressure of accumulator tending to open, and fuel pressure in other chamber tending to close, injection valves, and having means for periodically releasing that closing pressure
• F02M 61/16 - Fuel injectors not provided for in groups  or - Details not provided for in, or of interest apart from, the apparatus of groups
• H01L 41/00 - SEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR - Details thereof

Abstract

The invention relates to an ultrasonic monitoring device for determining the movement direction and/or the movement speed of an object, comprising an ultrasonic transmitter and an ultrasonic receiver, wherein, during the operation of the ultrasonic monitoring device, the ultrasonic transmitter emits an ultrasonic signal, the emitted ultrasonic signal is reflected at an object and the ultrasonic receiver receives the reflected ultrasonic signal, characterized by a clock generator for generating a first clock signal and a second clock signal, wherein the first clock signal and the second clock signal have a predetermined phase difference, a first demodulator for demodulating the received ultrasonic signal, wherein the first demodulator is activated or deactivated depending on the state of the first clock signal and outputs a first output signal, a second demodulator for demodulating the received ultrasonic signal, wherein the second demodulator is activated or deactivated depending on the state of the second clock signal and outputs a second output signal, and an evaluation unit for determining the movement direction and/or the movement speed of the object on the basis of the first output signal and the second output signal.

IPC Classes  ?

• G01S 15/58 - Velocity or trajectory determination systems; Sense-of-movement determination systems
• G01S 7/523 - RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES - Details of systems according to groups , , of systems according to group - Details of pulse systems
• G01S 15/62 - Sense-of-movement determination
• G01S 15/88 - Sonar systems specially adapted for specific applications
• G01S 15/52 - Discriminating between fixed and moving objects or between objects moving at different speeds
• G01S 7/54 - RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES - Details of systems according to groups , , of systems according to group with receivers spaced apart

Abstract

A high pressure fuel pump comprising at least one pumping head (10, 20) and an improved drive assembly comprising a drive means and a drive shaft (40) comprising a rider journal (46) adjoined to a rear bearing (42). The journal (46) and the bearing (42) comprise offset axes (C-C', D-D') relative to one another. A rider (50) is fitted on said drive shaft (40) to effect movement of the rider (50) along an eccentric rotational path. The rider (50) comprises a body (51) with an open-ended aperture (52), a load section (55) disposed around a first portion of the circumference of the aperture (52) and an idle section (58) disposed around a second portion of the circumference, and wherein the load section (55) of the rider (50) comprises at least one outwardly facing flat surface (56, 57) for cooperation with a tappet (35, 36). The drive shaft (40) comprises an enlarged rear bearing (42) with a reduced-depth section (45) at a bearing-journal junction, and the idle section (58) of the rider (50) comprises a reduced-width portion.

IPC Classes  ?

• F04B 1/04 - Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
• F02M 59/44 - Pumps specially adapted for fuel-injection and not provided for in groups - Details, component parts, or accessories not provided for in, or of interest apart from, the apparatus of groups
• F04B 53/00 - Component parts, details or accessories not provided for in, or of interest apart from, groups or
• F04B 53/22 - Arrangements for enabling ready assembly or disassembly

Abstract

A three-part driveshaft assembly for a high pressure fuel pump, comprising a shaft, at least one cam lobe located in an interference fit on a first mid-portion of the shaft, and a thrust washer located in an interference fit on a second mid- portion of the shaft; and a method of assembling the driveshaft assembly, for example using heating and cooling steps.

IPC Classes  ?

• F02M 59/10 - Pumps specially adapted for fuel-injection and not provided for in groups of reciprocating-piston type characterised by the piston drive
• F04B 1/04 - Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
• F02M 59/44 - Pumps specially adapted for fuel-injection and not provided for in groups - Details, component parts, or accessories not provided for in, or of interest apart from, the apparatus of groups
• F02M 59/48 - Assembling; Disassembling; Replacing
• F04B 9/04 - Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical the means being cams, eccentrics or pin-and-slot mechanisms
• F01L 1/047 - Camshafts

Abstract

A subassembly for a high pressure fuel injector control valve, comprising a control valve member and a sleeve attached to a stem of the control valve member, the sleeve extending along at least a partial axial length of the stem of the control valve member, and wherein a clearance, provided between the sleeve and the control valve member, is in fluid communication with the control chamber such that during use, pressure compensation occurs, as the sleeve is caused to expand and seal against the control valve bore, thereby preventing leakage of fuel within the control valve assembly.

IPC Classes  ?

• F02M 63/00 - SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF - Details, component parts or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups  or     
• F02M 47/02 - Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure of accumulator-injector type, i.e. having fuel pressure of accumulator tending to open, and fuel pressure in other chamber tending to close, injection valves, and having means for periodically releasing that closing pressure
• F02M 61/12 - Other injectors with elongated valve bodies, i.e. of needle-valve type characterised by the provision of guiding or centring means for valve bodies

Abstract

A method of fuel injection control in an internal combustion engine having at least one cylinder with an associated solenoid actuated fuel injector for performing injector events is presented. The injector has a valve group with a needle, which is at least indirectly controlled by a pressure force in a control chamber, which is in turn controlled by a control valve operated by the solenoid actuator. The method comprising the steps of: a) performing at least one injector event by applying, to said electromagnetic actuator, a drive pulse having a predetermined pulse width (PW); b) recording the voltage across said electromagnetic actuator, after the end of the drive pulse; c) processing the recorded voltage data to identify a predetermined waveform pattern in the corresponding secondary voltage derivative, following the end of the drive pulse; and d) computing a valve indicator (FWM) representative of the magnitude of said predetermined waveform pattern. This valve indicator can be used in a variety of applications related to injection control, and over the full injector operating range, e.g. for monitoring viscosity or lacquering, determining MDP, correcting for drift or voltage changes, determining the control valve lift.

IPC Classes  ?

• F02D 41/20 - Output circuits, e.g. for controlling currents in command coils
• F02D 41/24 - Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means
• F02D 41/40 - Controlling fuel injection of the high pressure type with means for controlling injection timing or duration

Abstract

A needle motion control means for a fuel injector comprising a collar, which may be formed of a porous, sintered material, the collar being located around the needle and allowing a restricted fluid pathway, such as orifices through the collar, between first and second volumes of fuel, the collar being located in a section of the nozzle body which has a greater cross-sectional area than the rest of the bore.

IPC Classes  ?

• F02M 47/02 - Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure of accumulator-injector type, i.e. having fuel pressure of accumulator tending to open, and fuel pressure in other chamber tending to close, injection valves, and having means for periodically releasing that closing pressure
• F02M 61/12 - Other injectors with elongated valve bodies, i.e. of needle-valve type characterised by the provision of guiding or centring means for valve bodies

Abstract

The invention relates to a solenoid valve (26) for controlling a fuel injector (10), comprising a coil (28), an armature-rod assembly (34), and a resilient device (32) provided for moving the armature-rod assembly (34) when the coil (28) is not supplied with power. The resilient device (32) is characterized in that it includes the complementary arrangement of a compression spring (66) having helical coils, and another flexible element (68) that is rigidly connected to the spring (66), wherein said other flexible element (68) is suitable for stopping the propagation of compression and expansion waves in the spring (66).

IPC Classes  ?

• F02M 47/02 - Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure of accumulator-injector type, i.e. having fuel pressure of accumulator tending to open, and fuel pressure in other chamber tending to close, injection valves, and having means for periodically releasing that closing pressure
• F02M 63/00 - SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF - Details, component parts or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups  or     
• F16K 31/06 - Operating means; Releasing devices magnetic using a magnet
• F16F 15/08 - Suppression of vibrations of non-rotating, e.g. reciprocating, systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating system using elastic means with rubber springs

Abstract

A hydraulic lash adjuster (20) adapted to be interposed in a hydraulic volume (V), between an actuator (18) and a control valve assembly (22) of a servo injector (10), said volume (V) being, in use, filled with fuel. The adjuster (20) comprises a lower piston (52) in which is slidably arranged an upper piston (46), an external spring (72) and an internal spring (64), both springs (72, 64) biasing the upper piston (46) toward the actuator (18). The lower piston (52) has a cylindrical cup-like shape with a peripheral wall (54) and a bottom wall (58) on which is arranged the internal spring (64) compressed between said bottom wall (58) of the lower piston (52) and the under- face of the upper piston (46).

IPC Classes  ?

• F02M 61/16 - Fuel injectors not provided for in groups  or - Details not provided for in, or of interest apart from, the apparatus of groups

Abstract

A combined low pressure regulator and venturi (100,200) component for common rail internal combustion engine fuel delivery system, comprising a piston (104,204) reciprocally movable within an outer body (102,202) of the combined unit, and a venturi for creating a depression for an injector leak return flow path (32).

IPC Classes  ?

• F02M 63/02 - Fuel-injection apparatus having several injectors fed by a common pumping element, or having several pumping elements feeding a common injector; Fuel-injection apparatus having provisions for cutting-out pumps, pumping elements, or injectors; Fuel-injection apparatus having provisions for variably interconnecting pumping elements and injectors alternatively
• F02M 37/00 - Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
• F02M 55/00 - Fuel-injection apparatus characterised by their fuel conduits or their venting means
• F02M 59/34 - Varying fuel delivery in quantity or timing by throttling of passages to pumping elements or of overflow passages
• F02M 63/00 - SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF - Details, component parts or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups  or     

Abstract

A method to control an engine system which includes a turbocharger, said method comprising: i) determining an open loop demand compressor ratio from a demand boost pressure and inlet pressure; ii) inputting the output of i) into a model/map F to provide as an output a VGT or waste gate position, wherein an input to said map is additionally a parameter indicative of the enthalpy of the exhaust gases; where the enthalpy parameter is a function of airflow+β*fuelflow, characterised wherein β is a function of the measured or estimated temperature of exhaust gases T3.

IPC Classes  ?

• F02D 41/14 - Introducing closed-loop corrections
• F02D 41/00 - Electrical control of supply of combustible mixture or its constituents
• F02D 41/10 - Introducing corrections for particular operating conditions for acceleration
• F02D 41/18 - Circuit arrangements for generating control signals by measuring intake air flow
• F02B 37/18 - Control of the pumps by bypassing exhaust
• F02B 37/24 - Control of the pumps by using pumps or turbines with adjustable guide vanes

Abstract

The invention relates to an anti-rotation device (120) of a fuel lance (100), the lance (100) being capable of being arranged in a bore (102) extending through a cylinder head of a cylinder (104) from an intake opening (116) until a hole (108) provided for receiving a fuel injector (110), the lance (100) being suitable for allowing high-pressure fuel to circulate from an intake opening of the lance (106) until the outlet opening (124) of the lance (100) engaging with the intake opening (126) of the fuel injector (110), the fuel lance (100) including a nut (112) intended for being screwed into an intake opening (116) of the bore (102) and a tubular member (118) compressed between said nut (112) and the injector (110), the lance (100) also comprising the anti-rotation device (120) capable of preventing the rotation of the tubular member (118) when the nut (112) is tightened, characterised in that the anti-rotation device (120) is a resilient element which deforms from the start of the rotation of the nut (112) such as to lock between the tubular member (118) and the inner wall of the bore (102) and thus to prevent the rotation of the tubular member (118).

IPC Classes  ?

• F02M 55/00 - Fuel-injection apparatus characterised by their fuel conduits or their venting means
• F02M 55/02 - Conduits between injection pumps and injectors

Abstract

A connector assembly is disclosed including a first connector having a body, an engaging lug and a blocking member; a second connector capable of being coupled to the first connector, the second connector having a blocking release member and a latch; a connector position assurance member having a flexible connector position assurance leg, the connector position assurance member installed on the second connector such that the position of the connector position assurance member is changeable; and an elastic member configured to bias the connector position assurance member in a first direction. The blocking member can make contact with the connector position assurance leg to move the connector position assurance member in a second direction opposite to the first direction. The blocking release member can release the contact between the connector position assurance leg and the blocking member.

IPC Classes  ?

• H01R 13/627 - Snap-action fastening
• H01R 13/641 - Means for preventing, inhibiting or avoiding incorrect coupling by indicating correct or full engagement

Abstract

Sealing assembly for a high pressure fuel pumping mechanism, comprising a seal and a seal retainer, wherein the seal partially surrounds an extension section of the pump head and partially extends below the pump head towards a cam follower, and wherein the seal is provided partially within the seal retainer, and extends partially from the seal retainer, the cam follower; means such as a weld seam are provided for retaining the seal retainer on the pump head.

IPC Classes  ?

• F02M 59/44 - Pumps specially adapted for fuel-injection and not provided for in groups - Details, component parts, or accessories not provided for in, or of interest apart from, the apparatus of groups
• F02M 59/10 - Pumps specially adapted for fuel-injection and not provided for in groups of reciprocating-piston type characterised by the piston drive

Abstract

The invention relates to a fuel injector including a needle (72), a two-way solenoid valve (24), such that in the closed position of the solenoid valve, the pressure rises in the control chamber and, a means (26, 114) for reducing dynamic leaks which prevent the fuel from flowing directly from the supply channel (146) to a return circuit (148) when the solenoid valve (24) is in the open position.

IPC Classes  ?

• F02M 47/02 - Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure of accumulator-injector type, i.e. having fuel pressure of accumulator tending to open, and fuel pressure in other chamber tending to close, injection valves, and having means for periodically releasing that closing pressure
• F02M 63/00 - SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF - Details, component parts or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups  or     
• F02M 61/04 - Fuel injectors not provided for in groups  or having valves

Abstract

A control valve (16) of a fuel injector is provided with a cylindrical valve body (42) extending along a main axis from an upper face (44) to a lower face (46), said body (42) being provided with a large cylindrical shallow recess (48) opening in said upper face (44) and in the bottom of which opens a valve distributor bore (50) axially extending toward the lower face (46). The control valve further has a magnetic armature-stem assembly (62) and, guiding means (56) for slidably guiding the armature-stem assembly (62) into the valve bore (50) and with seating means (70, 72, 74), distinct and independent means from the guiding means (56), for opening or closing a fluid communication between a high pressure conduit (112) and a return conduit (110), both conduits opening in said bore (50).

IPC Classes  ?

• F02M 63/00 - SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF - Details, component parts or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups  or     
• F02M 47/02 - Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure of accumulator-injector type, i.e. having fuel pressure of accumulator tending to open, and fuel pressure in other chamber tending to close, injection valves, and having means for periodically releasing that closing pressure

Abstract

The invention relates to an injector comprising an actuator, a valve (26) and a nozzle. The actuator body (22), the valve body (50) and the nozzle body are rigidly interconnected in a coaxial stack by means of an injector nut. The injector also comprises a device (92) for coaxially positioning the actuator body (22) and the valve body (50). The positioning device (92) comprises a radial positioning means (94) which prevents the actuator body (22) and the valve body (50) from moving out of alignment, and an angular positioning means (96) which prevents the same two bodies (20, 50) from rotating relative to one another, the two positioning means (94, 96) being separate from and independent of one another.

IPC Classes  ?

• F02M 61/16 - Fuel injectors not provided for in groups  or - Details not provided for in, or of interest apart from, the apparatus of groups
• F02M 47/02 - Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure of accumulator-injector type, i.e. having fuel pressure of accumulator tending to open, and fuel pressure in other chamber tending to close, injection valves, and having means for periodically releasing that closing pressure
• F02M 61/12 - Other injectors with elongated valve bodies, i.e. of needle-valve type characterised by the provision of guiding or centring means for valve bodies

Abstract

The present disclosure relates to a fuel injector (101, 201, 301, 401) comprising a fuel supply line, a fuel return line (111, 211, 311, 411), a control chamber (107, 207, 307, 407), a control valve (104, 204, 304, 404) for controlling fuel pressure in the control chamber (107, 207, 307, 407), the control valve (104, 204, 304, 404) comprising a valve member (105, 205, 305, 405) and a cooperating valve seat (106, 206, 306, 406),and a fuel flow restriction (149, 249, 349, 449) for maintaining a positive pressure in the fuel return line (111, 211, 311, 411). The fuel flow restriction (149, 249, 349, 449) comprises a first aperture having a restriction width (W R ).A particle trap (152, 252, 352, 452) is disposed between the valve seat (106, 206, 306, 406) and the fuel flow restriction (149, 249, 349, 449). The particle trap (152, 252, 352, 452) comprises at least one second aperture having a clearance width (W c ). The clearance width (W c )is less than or equal to the restriction width (W R ).

IPC Classes  ?

• F02M 55/00 - Fuel-injection apparatus characterised by their fuel conduits or their venting means
• F02M 47/02 - Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure of accumulator-injector type, i.e. having fuel pressure of accumulator tending to open, and fuel pressure in other chamber tending to close, injection valves, and having means for periodically releasing that closing pressure

Abstract

A method of determining the cetane number of a fuel in an internal combustion engine comprising, during running of the engine, i) with respect to one cylinder, performing a routine comprising a series of injections wherein for each injection a quantity of fuel is injected into said cylinder, and during said routine varying the angle at which said injections takes place with respect to crankshaft angle; ii) measuring engine speed at intervals during said series of injections and determining values for changes in engine speed consequent to said injections; iii) determining cetane number from a pre-stored relationship relating said cetane number to changes in engine speed consequent to changes in said test injection angle.

IPC Classes  ?

• F02D 41/00 - Electrical control of supply of combustible mixture or its constituents
• F02D 41/14 - Introducing closed-loop corrections
• F02D 41/24 - Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means
• F02D 41/40 - Controlling fuel injection of the high pressure type with means for controlling injection timing or duration
• F02D 19/06 - Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed

Abstract

The invention is about a sensor and fixation means assembly (30) wherein, the sensor is fixed to a fixation means said fixation means being fixedly attachable on an external convex curved surface (28) of a fuel injector (10). In use, the sensor delivers a signal varying as a function of the fuel pressure in the injector (10).

IPC Classes  ?

• F02M 57/00 - Fuel injectors combined or associated with other devices
• F02M 61/16 - Fuel injectors not provided for in groups  or - Details not provided for in, or of interest apart from, the apparatus of groups
• F02M 65/00 - Testing fuel-injection apparatus, e.g. testing injection timing

Abstract

The present disclosure relates to a pump (100, 200) for supplying high-pressure fuel to a common rail fuel injection system. The pump (100, 200) comprises an elongated aperture (109, 209) forming a pumping chamber (111, 211) and a pressurisation chamber (119, 219); a pumping element (113, 213) configured to reciprocate within the elongated aperture (109, 209) to pump fuel from the pumping chamber (111, 211); and pressurisation means for pressurising fuel in the pressurisation chamber (119, 219). The pressurisation chamber (119, 219) extends at least partially around the circumference of the pumping element (113, 213) to reduce leakage from the pumping chamber (111, 211).

IPC Classes  ?

• F02M 59/44 - Pumps specially adapted for fuel-injection and not provided for in groups - Details, component parts, or accessories not provided for in, or of interest apart from, the apparatus of groups
• F02M 61/16 - Fuel injectors not provided for in groups  or - Details not provided for in, or of interest apart from, the apparatus of groups
• F04B 39/04 - Measures to avoid lubricant contaminating the pumped fluid
• F04B 5/02 - Machines or pumps with differential-surface pistons with double-acting pistons

Abstract

A driveshaft assembly, for example in an Electronic Unit Injector, Unit Injector or Electronic Unit Pump testing machine, wherein an indexing means, such as complementary external and internal splines, enables a cam to be mounted on a shaft at a number of discreet positions, each providing a different offset of a central axis of the base cylinder section from a central axis of the shaft, each position providing a different maximum lift value of a plunger in contact with the cam, directly or via a rocker arm.

IPC Classes  ?

• F02M 59/02 - Pumps specially adapted for fuel-injection and not provided for in groups of reciprocating-piston type
• F02M 59/10 - Pumps specially adapted for fuel-injection and not provided for in groups of reciprocating-piston type characterised by the piston drive
• F02M 59/48 - Assembling; Disassembling; Replacing
• F01L 1/053 - Camshafts overhead type
• F02M 65/00 - Testing fuel-injection apparatus, e.g. testing injection timing
• F02M 57/02 - Injectors structurally combined with fuel-injection pumps
• F01L 1/047 - Camshafts

Abstract

An electronic printed circuit board (42) is adapted to receive and process sensor signals. The PCB is provided with connecting means (76) for connecting the electronic circuit of the PCB (42) to the electrical drive terminals (36) of the coil of an actuator of a fuel injector (10). The drive terminals (36) are themselves connected to a control unit piloting the actuator via complementary engagement of a connector of the control unit to the connector of the injector (10) so that, the sensor signals are transmitted to the control unit.

IPC Classes  ?

• F02M 51/00 - Fuel-injection apparatus characterised by being operated electrically
• F02D 41/24 - Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means
• F02M 57/00 - Fuel injectors combined or associated with other devices

Abstract

A return spring for a diesel fuel pump pumping mechanism, the spring having a variable external diameter, and having a greater diameter at an end abutting an inlet valve body, than at an opposite end abutting a seat proximate a roller/shoe guide, the spring is formed entirely of a frustoconical section or sections, or with an additional cylindrical section or sections; the spring exhibits decreased resonance during pumping, and has an increased free length, leading to a reduction in stresses in the spring.

IPC Classes  ?

• F04B 1/04 - Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
• F02M 59/06 - Pumps specially adapted for fuel-injection and not provided for in groups of reciprocating-piston type characterised by special arrangement of cylinders with respect to piston-driving shaft, e.g. arranged parallel to that shaft with cylinders arranged radially to driving shaft, e.g. in V- or star-arrangement
• F02M 59/10 - Pumps specially adapted for fuel-injection and not provided for in groups of reciprocating-piston type characterised by the piston drive
• F04B 1/053 - Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement with actuating or actuated elements at the inner ends of the cylinders
• F04B 9/04 - Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical the means being cams, eccentrics or pin-and-slot mechanisms

Abstract

In a diesel fuel injection nozzle, a separating assembly which separates high and low pressure circuits comprises a member having a through bore, in which a connecting pin is located to transfer hydraulic/mechanical force on energisation of an actuator, to a nozzle needle, via an inverter/amplifier assembly, wherein a sleeve is provided around the pin, such that radial forces from high pressure fuel act upon the sleeve, thereby reducing a pre-determined clearance between the pin and sleeve, thereby reducing leakage of fuel between the high and low pressure circuits via the separating assembly.

IPC Classes  ?

• F02M 51/06 - Injectors peculiar thereto
• F02M 63/00 - SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF - Details, component parts or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups  or     
• F02M 61/16 - Fuel injectors not provided for in groups  or - Details not provided for in, or of interest apart from, the apparatus of groups

Abstract

The invention relates to a high pressure fuel pump comprising an evacuation orifice assembly, comprising: a first member (30) adapted to be disposed across the evacuation orifice (12) and comprising at least one opening (32) therein, a second member (40) with a lead portion (42) adapted to be disposed within said opening(s) (32), wherein the assembly is adapted to provide a first predetermined flow-rate of fluid through the opening(s) (32) when the lead portion (42) is in a first position within the opening(s) (32), and to selectively enlarge the opening(s) (32) to provide a second predetermined flow- rate of fluid through the opening(s) (32) when the lead portion is in a second position within said opening(s) (32). The invention also provides an evacuation orifice arrangement adapted to be fitted within an existing bore in the pump comprising: a body (11) adapted to fit within the existing bore, comprising an open-ended evacuation orifice (12); an evacuation assembly and a resilient compression member (14) set to yield (compress) upon exposure to pressure above a predetermined level and adapted to exert force on the first member (30).

IPC Classes  ?

• F02M 59/10 - Pumps specially adapted for fuel-injection and not provided for in groups of reciprocating-piston type characterised by the piston drive
• F02M 59/44 - Pumps specially adapted for fuel-injection and not provided for in groups - Details, component parts, or accessories not provided for in, or of interest apart from, the apparatus of groups
• F02M 55/00 - Fuel-injection apparatus characterised by their fuel conduits or their venting means
• F04B 53/06 - Venting
• F02M 63/00 - SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF - Details, component parts or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups  or     
• F16K 24/04 - Devices, e.g. valves, for venting or aerating enclosures for venting only

Abstract

The invention relates to a high pressure fuel pump such as a fuel pump, comprising an evacuation device, the device comprising a porous member adapted to be disposed within said orifice and provide a predetermined flow-rate of fluid there through, wherein the device further provides at least one opening that is selectively actuated to provide an increased flow-rate of fluid through the device. The invention also relates to an evacuation orifice assembly for a high pressure fuel pump and an evacuation orifice arrangement adapted to be fitted within an existing bore in a high pressure fuel pump.

IPC Classes  ?

• F02M 59/46 - Valves
• F02M 59/44 - Pumps specially adapted for fuel-injection and not provided for in groups - Details, component parts, or accessories not provided for in, or of interest apart from, the apparatus of groups
• F02M 63/00 - SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF - Details, component parts or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups  or     
• F04B 53/06 - Venting
• F02M 37/20 - Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines characterised by means for preventing vapour lock

Abstract

A control valve arrangement (12) of a fuel injector (10) comprises a bore (18) in which a piston (16) is slidably arranged, the piston piloting injection events and the bore opening in direct and unrestricted fluid communication into a first control chamber (24). The arrangement comprises a further fluid communication path from a high pressure line (20) to a second control chamber (68), the further fluid communication path comprising, for example, a clearance, a channel or a bypass orifice.

IPC Classes  ?

• F02M 47/02 - Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure of accumulator-injector type, i.e. having fuel pressure of accumulator tending to open, and fuel pressure in other chamber tending to close, injection valves, and having means for periodically releasing that closing pressure
• F02M 63/00 - SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF - Details, component parts or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups  or     

Abstract

A fuel injector (10) comprising a needle (16) able to move between a fully open position (PO) and a closed position (PF) is provided with a device (82) for tracking the position of the needle, in which an electrical circuit (84) is closed in the two end positions (PO, PF), the needle (16) being in electrical contact with earth (M), the circuit (84) being open in any other intermediate position (Pi) of the needle (16), the needle (16) not being earthed (M).

IPC Classes  ?

• F02M 65/00 - Testing fuel-injection apparatus, e.g. testing injection timing
• F02M 51/00 - Fuel-injection apparatus characterised by being operated electrically
• F02M 47/02 - Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure of accumulator-injector type, i.e. having fuel pressure of accumulator tending to open, and fuel pressure in other chamber tending to close, injection valves, and having means for periodically releasing that closing pressure

Abstract

A fuel injector (10) for an internal combustion engine comprises: an injector body (12) in which there are positioned an actuator (14), a control valve (21) and a needle guide (24). The actuator actuates the control valve (21), the control valve (21) controlling an injection needle (38) sliding in its guide (24) between an open position in which injection is permitted and a closed position in which the injection of fuel is prevented. The injector (10) additionally comprises a first electrical connection (42) extending from the guide (24) of the needle (38) to intermediate electrical connection means (40) internal to the injector, and also comprises a second electrical connection (44) extending from said intermediate connection means (40) to a connector pin (46) accessible from the outside of the injector so that an electrical signal indicative of the position of the needle can be transmitted from the guide (24) of the needle (38) to the connector pin (46) and therefore be accessible to an external electronic computer.

IPC Classes  ?

• F02M 51/00 - Fuel-injection apparatus characterised by being operated electrically
• F02M 65/00 - Testing fuel-injection apparatus, e.g. testing injection timing
• F02M 47/02 - Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure of accumulator-injector type, i.e. having fuel pressure of accumulator tending to open, and fuel pressure in other chamber tending to close, injection valves, and having means for periodically releasing that closing pressure
• F02M 61/16 - Fuel injectors not provided for in groups  or - Details not provided for in, or of interest apart from, the apparatus of groups
• F02M 57/00 - Fuel injectors combined or associated with other devices

Abstract

A metallic or ceramic thrust disc for a diesel fuel pump assembly, located between an end of a driveshaft rear journal portion, and an end surface of a blind bore in the housing, wherein axial loading of the driveshaft causes an end face of the rear journal portion to contact a first contact face of the thrust face, wherein a recess comprising a slot projecting into the rear journal portion from the end face, and wherein the recess forms part of a back leak circuit; and method of assembly a pump assembly including positing the thrust disc in the housing.

IPC Classes  ?

• F02M 59/06 - Pumps specially adapted for fuel-injection and not provided for in groups of reciprocating-piston type characterised by special arrangement of cylinders with respect to piston-driving shaft, e.g. arranged parallel to that shaft with cylinders arranged radially to driving shaft, e.g. in V- or star-arrangement
• F02M 63/00 - SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF - Details, component parts or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups  or     
• F04B 1/053 - Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement with actuating or actuated elements at the inner ends of the cylinders

Abstract

A fuel injector for an internal combustion engine comprises a nozzle body (14) having a spray tip (18) with at least one spray orifice (28) and a needle (22) slideably arranged in said nozzle body (14) in order to control the spray orifice (28). A control chamber (40) is associated with the needle (22), which, in use, is filled with high-pressure fuel in order to exert, at least indirectly, a pressure force on said needle (22) in its closing direction; the control chamber (40) being in communication with a high pressure fuel channel (34) through an inlet restrictor INO (70) and with a low pressure drain through an outlet restrictor SPO (72) via a control valve (46) to selectively allow or hinder the flow of fuel out of the control chamber through the outlet restrictor (72). The inlet restrictor (70) and outlet restrictor (72) have respective geometries that are designed so that the ratio of outlet fuel flow rate over inlet fuel flow rate increases at low fuel temperatures, as compared to normal fuel temperatures at same fuel pressure, in order to cause a greater pressure reduction in the control chamber (40).

IPC Classes  ?

• F02M 47/02 - Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure of accumulator-injector type, i.e. having fuel pressure of accumulator tending to open, and fuel pressure in other chamber tending to close, injection valves, and having means for periodically releasing that closing pressure

Abstract

The invention relates to a control valve (16) for controlling the movement of the needle (42) of a fuel injector (10), the valve (16) comprising a coil (18) which is attached to the housing (12) of the injector, which housing engages with an armature (20, 22, 26) which can be moved between an open position and a closed position. The armature (20, 22, 26) comprises a magnetic plate (22), through the centre of which a rod (26), which forms a valve piston, extends perpendicularly to the plate (22) to a remote end (30). Said piston (26) slides into a bore in the injector housing, the movements of the armature (22) and of the piston (26) opening or closing channels in which pressurised fuel flows. The armature (20, 22, 26) is provided with a device for quickly discharging the fuel which is captive between the coil (18) and the plate (22).

IPC Classes  ?

• F02M 47/02 - Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure of accumulator-injector type, i.e. having fuel pressure of accumulator tending to open, and fuel pressure in other chamber tending to close, injection valves, and having means for periodically releasing that closing pressure
• F02M 63/00 - SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF - Details, component parts or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups  or     

Abstract

A high pressure container arrangement (16) is disclosed. It comprises the assembly of reservoir (22) and a pressure limiting valve (14). The reservoir (22) has an outer wall (20), an over pressure relief orifice (26) through which high pressure fluid may flow when the fluid pressure inside the reservoir (22) exceeds a predetermined pressure threshold. The valve (14) comprises a housing (30) in which is arranged a closing member (40) permanently biased by a spring (56) toward a closed position and, when the pressure in the reservoir (22) exceeds the predetermined threshold the closing member (40) is pushed in an open position. The housing (30) of the valve (14) is integral to the wall (20) of the reservoir (22).

IPC Classes  ?

• F02M 63/00 - SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF - Details, component parts or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups  or     
• F02M 55/02 - Conduits between injection pumps and injectors
• F02M 63/02 - Fuel-injection apparatus having several injectors fed by a common pumping element, or having several pumping elements feeding a common injector; Fuel-injection apparatus having provisions for cutting-out pumps, pumping elements, or injectors; Fuel-injection apparatus having provisions for variably interconnecting pumping elements and injectors alternatively
• F16K 17/06 - Safety valves; Equalising valves closing on insufficient pressure on one side spring-loaded with special arrangements for adjusting the opening pressure

Abstract

The present invention relates to a solenoid valve (14) provided for regulating the pressure in a pressurised fuel injection system, the solenoid valve (14) comprising a body in which a spindle (24) is arranged, which spindle is biased by an electromagnet comprising a coil and a magnetic core (42). The core (42) is provided with a cavity (50) which is in fluid communication, via an internal channel (52), with a counterbore of the body (22) into which the spindle (24) protrudes and into which fuel flows during use. The core (42) is furthermore provided with a means (58) for restricting said fluid communication, which restriction means is suitable for damping, during use, pressure waves propagating in the fuel and suitable for preventing said waves from moving the core (50).

IPC Classes  ?

• F02M 63/00 - SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF - Details, component parts or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups  or     
• F02M 63/02 - Fuel-injection apparatus having several injectors fed by a common pumping element, or having several pumping elements feeding a common injector; Fuel-injection apparatus having provisions for cutting-out pumps, pumping elements, or injectors; Fuel-injection apparatus having provisions for variably interconnecting pumping elements and injectors alternatively

Abstract

A pressure limiting valve is adapted to commute between a closed state, where a ball is biased against a valve seat along a contacting line and, an open state, where the ball is at a distance of the valve seat enabling fluid under pressure to exit via a relief orifice opening in the valve seat. The valve seat is shaped so that in closed state of the valve, the contacting line between the ball and the valve seat is at a distance from the opening of the relief orifice.

IPC Classes  ?

• F02M 63/00 - SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF - Details, component parts or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups  or     

Abstract

The invention relates to a fuse connector for motor vehicles. The invention avoids incorrect insertion of fuse contact tabs, via the front surface (13) of said connector, by limiting the dimensions of the space around the opening (15) through which the fuses must be coupled to the contacts (5). For this purpose, the openings for inserting a contact-removal tool (39) are offset relative to the openings for inserting fuse contact tabs (15) in the closing direction (Df) and the contacts (5) are moved between two positions, one located next to the openings for inserting a contact-removal tool (39) and the other opposite the openings for inserting fuse contact tabs (15).

IPC Classes  ?

• H01R 13/422 - Securing in a demountable manner in resilient one-piece base or case; One-piece base or case formed with resilient locking means
• H01R 43/22 - Hand tools
• H01H 85/20 - Bases for supporting the fuse; Separate parts thereof
• B60R 16/023 - Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric for transmission of signals between vehicle parts or subsystems
• H01R 13/436 - Securing a plurality of contact members by one locking piece
• H01R 13/447 - Shutter or cover plate
• H01R 13/502 - Bases; Cases composed of different pieces

Abstract

A high pressure pump assembly (HP pump, 10) for a fuel injection system of an internal combustion engine, the pump (10) comprising: a high pressure unit (HP unit, 14) extending along a main axis (AA) and comprising a foot portion (16) adapted to cooperate with a rotating cam (32) to engage a pumping plunger (24) in a reciprocal axial displacement and, a pumping head (18) having a housing (26) provided with a compression chamber (34) wherein, in use, fuel enters at low pressure via an intermediate inlet conduit (36), then is pressurized by the pumping plunger (24), then exits at high pressure via an HP outlet (38), characterized in that the high pressure pump (10) further comprises a low pressure unit (LP unit, 12) having a connecting member (20) adapted to fixedly receive a valve (28), a general pump inlet (22) for receiving LP fuel from a LP tank, the connecting member (20) being further adapted to cooperate in a complementary engagement with the HP unit (14), said engagement being angularly indexed.

IPC Classes  ?

• F02M 59/48 - Assembling; Disassembling; Replacing

Abstract

A method of monitoring the functionality of an exhaust gas recirculation system/valve in a vehicle engine system which includes an exhaust brake comprising: applying said exhaust brake; monitoring the functionality of the exhaust gas recirculation system whilst the exhaust brake is applied.

IPC Classes  ?

• F02D 41/00 - Electrical control of supply of combustible mixture or its constituents
• F02M 25/07 - adding exhaust gases
• F02D 9/06 - Exhaust brakes

Abstract

The invention relates to a shielded connector for a motor vehicle. The connector comprises at lest one casing shielding element (26). The shielding element (26) includes a cable outlet portion (34) provided with a plurality of resilient tabs (36) that are integral with the shielding element (26). The tabs (36) include a contact zone in electrical contact with a ferrule (24) crimped to a shielding braid of a cable. The contact zone is maintained pressed against the shielding braid by means of a removable clamping ring.

IPC Classes  ?

• H01R 9/05 - Connectors arranged to contact a plurality of the conductors of a multiconductor cable for coaxial cables
• H01R 13/6593 - Specific features or arrangements of connection of shield to conductive members the conductive member being a shielded cable the shield being composed of different pieces
• H01R 13/52 - Dustproof, splashproof, drip-proof, waterproof, or flameproof cases
• H01R 13/58 - Means for relieving strain on wire connection, e.g. cord grip

Abstract

The objective of the present invention is to provide an exhaust purification system for an internal combustion engine, said system making it possible to optimize a PM discharge amount and a HC discharge amount. The exhaust purification system is provided with an LNT having a function of oxidizing HC, a fuel injection valve with which a main injection and an after-injection can be performed, a fuel injection control means that controls the fuel injection amount from the fuel injection valve and the fuel injection timing, a temperature acquisition means that acquires the carrier temperature of the LNT, and an oxidation capacity estimation means that estimates the HC oxidation capacity of the LNT on the basis of the acquired carrier temperature. The after-injection is defined as fuel injection that takes place after the main injection and in a region in which the wider the interval between the main injection and the after-injection, the greater the increase in the amount of PM combustion in a cylinder. The fuel injection control means widens the interval between the main injection timing and the after-injection timing the larger the parameter (Pox) for oxidation characteristics, which represents HC oxidation capacity.

IPC Classes  ?

• F02D 41/40 - Controlling fuel injection of the high pressure type with means for controlling injection timing or duration
• F01N 3/021 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
• F01N 3/08 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous

Abstract

A method of determining the pressure Pp at a point from the compressor outlet to the intake manifold of a turbocharged engine system comprising: providing a relationship between the turbo speed(ώ),compressor pressure ratio (P1/P0) and air mass flow (AMF); measuring the turbo speed(ώ); measuring or estimating the compressor inlet pressure, P0; measuring the air mass flow (AMF); determining the pressure Pp from the parameters of steps b) c) and d) using said relationship.

IPC Classes  ?

• F02D 41/22 - Safety or indicating devices for abnormal conditions
• F02D 41/00 - Electrical control of supply of combustible mixture or its constituents
• F02D 41/14 - Introducing closed-loop corrections

Abstract

A nozzle assembly of a fuel injector extends along a main axis (A) and comprises a nozzle body provided with an inner space divided in upstream chamber (38) and downstream chamber (40) and also with, a valve needle comprising a main elongated shaft slidably guided in said inner space and extending through-out both upstream (38) and downstream (40) chambers. The nozzle body (16) and the valve needle (14) cooperate to define throttle fluid communication means (56) between upstream (38) and downstream (40) chambers inducing, in use, a pressure drop when fuel flows through. The nozzle assembly is further provided with a tubular sleeve (44) arranged between the upstream chamber (38) and the downstream chamber (40) in abutment against a face (42) of the body (16) and being radially self-centred guided by a cylindrical face (34) of the needle (14), the throttle means (56) being arranged in said sleeve (44).

IPC Classes  ?

• F02M 61/12 - Other injectors with elongated valve bodies, i.e. of needle-valve type characterised by the provision of guiding or centring means for valve bodies
• F02M 61/20 - Closing valves mechanically, e.g. arrangements of springs or weights
• F02M 47/02 - Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure of accumulator-injector type, i.e. having fuel pressure of accumulator tending to open, and fuel pressure in other chamber tending to close, injection valves, and having means for periodically releasing that closing pressure

Abstract

An electrical connector assembly (18) of a fuel injector (10) is disclosed. The connector has a body with external walls defining an internal volume and an internal wall dividing the connector in a first part adapted to be fixed in a complementary engagement with the body (12) of the injector and, in a second part adapted to receive another electrical connector. The electrical connector assembly further comprises at least one electrical terminal extending through the internal wall from an inner extremity protruding in the inner volume of the first part of the body, to an outer extremity protruding in the outer volume of the second part of the body. The outer extremity is shaped to receive in a complementary engagement an electrical terminal of said another electrical connector. The connector assembly (18) is adapted to be in fluid communication with the back leak return conduit of the injector (10).

IPC Classes  ?

• F02M 51/00 - Fuel-injection apparatus characterised by being operated electrically
• F02M 55/00 - Fuel-injection apparatus characterised by their fuel conduits or their venting means
• F02M 61/16 - Fuel injectors not provided for in groups  or - Details not provided for in, or of interest apart from, the apparatus of groups

Abstract

A filter for a control flow of a fuel injector, wherein a primary fuel flow enters the injector through an inlet aperture, and wherein part of the primary fuel flow forms a secondary fuel flow which enters a control valve through a control flow aperture, wherein the filter is located such that only the secondary flow of fuel passes through the filter, the filter comprising filter orifices such as slots, holes or perforations, wherein at least one dimension of the filter orifices is less than the nozzle control valve lift value.

IPC Classes  ?

• F02M 47/02 - Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure of accumulator-injector type, i.e. having fuel pressure of accumulator tending to open, and fuel pressure in other chamber tending to close, injection valves, and having means for periodically releasing that closing pressure
• F02M 61/16 - Fuel injectors not provided for in groups  or - Details not provided for in, or of interest apart from, the apparatus of groups

Abstract

A fuel injector an internal combustion engine, comprising a filter for filtering fuel flowing into the control valve, the filter compromising multiple filter orifices, provided on a sleeve surrounding the control valve, or on a filter element integral to the sleeve, or a filter element or plate located between an entry to the INO (inlet orifice) from a main fuel supply passage and the control valve, thereby filtering fuel contaminant particles from the flow of fuel entering the control valve, thereby reducing or eliminating control valve seat wear and subsequent leakage.

IPC Classes  ?

• F02M 47/02 - Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure of accumulator-injector type, i.e. having fuel pressure of accumulator tending to open, and fuel pressure in other chamber tending to close, injection valves, and having means for periodically releasing that closing pressure
• F02M 61/16 - Fuel injectors not provided for in groups  or - Details not provided for in, or of interest apart from, the apparatus of groups

Abstract

The invention relates to a fuse-holder connector for motor vehicles. The invention prevents an erroneous insertion of the contact tongues (17) of the fuses (19) via the front face (13) of said connector, by limiting the dimensions of the space around the opening via which the fuses (19) must be coupled to the contacts (5). To this end, secondary locking means (9) are introduced via the rear of the connector.

IPC Classes  ?

• H01R 13/422 - Securing in a demountable manner in resilient one-piece base or case; One-piece base or case formed with resilient locking means
• H01H 85/20 - Bases for supporting the fuse; Separate parts thereof
• H01R 13/436 - Securing a plurality of contact members by one locking piece
• H01R 13/432 - Securing in a demountable manner by locking means on resilient contact members by stamped-out resilient tongue snapping behind shoulder in base or case

Abstract

In a piezo-electrically actuated fuel injector, a method of determining or providing a measure the gap between the end of the piezo electric stack/actuator and the valve, and/or the point at which the gap is zero, comprising energising the stack/actuator, and measuring one or more characteristics of oscillation.

IPC Classes  ?

• F02M 51/06 - Injectors peculiar thereto
• F02M 65/00 - Testing fuel-injection apparatus, e.g. testing injection timing
• H01L 41/04 - SEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR - Details thereof - Details of piezo-electric or electrostrictive elements
• F02D 41/20 - Output circuits, e.g. for controlling currents in command coils

Abstract

The present disclosure relates to a method of determining a flow rate of a liquid. The method comprises collecting the liquid in a container (107); monitoring the collection of liquid in the container (107) with respect to time; and determining a first value of the flow rate based on the monitored collection of liquid in the container (107) with respect to time. The present disclosure also relates to an apparatus (101) for determining a flow rate of a liquid.

IPC Classes  ?

• G01F 25/00 - Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume
• G01F 1/00 - Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow

Abstract

Internal combustion engine fuel pumping mechanism (200), comprising a pumping element (214) such as a plunger, moveable within first location bore (220), an intermediate member (212) such as a tappet, movable within a second location bore, and a driving mechanism such as a cam (210), wherein during a pumping stroke, cam load is transferred to the plunger (214) via contact surfaces plunger (218) and tappet contact surfaces (216), the plunger contact surface (218) being radiused, and the tappet contact surface (216) being angled at a selected angle (A) with respect to an axial axis of the tappet (212), such that when the tappet (212) tilts within the second location bore on application of cam load, the tappet (212) contact surface becomes orthogonal with a longitudinal axis of the second bore and the plunger (214), ensuring a substantially central contact point between the contact surfaces. The inventive concept also extends to an intermediate member (212) comprising a contact surface (216) which is angled with respect to an axial axis of the intermediate member (212).

IPC Classes  ?

• F02M 59/10 - Pumps specially adapted for fuel-injection and not provided for in groups of reciprocating-piston type characterised by the piston drive

Abstract

A fuel injector has supply channel arranged in its body and comprises a control valve hydraulically controlling the displacements of a valve needle arranged within an axial main bore of the body. The needle reciprocally displaces between a closed position and a fully open position. The main bore axially extends from a pointy tip provided with the injection holes to an upper extremity forming a control chamber in which protrudes the upper extremity of the valve needle. The control chamber is in fluid communication with the high pressure supply channel via a supply conduit and with, a low pressure return channel via another conduit controlled by the control valve and, the needle is provided with an internal conduit extending between its upper face and its side wall where it opens in the control chamber.

IPC Classes  ?

• F02M 63/00 - SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF - Details, component parts or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups  or     
• F02M 47/02 - Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure of accumulator-injector type, i.e. having fuel pressure of accumulator tending to open, and fuel pressure in other chamber tending to close, injection valves, and having means for periodically releasing that closing pressure
• F02M 61/04 - Fuel injectors not provided for in groups  or having valves

Abstract

A method of controlling an electrically/electronically operated actuator for a fuel system or component thereof, wherein in operation said actuator is supplied with electrical pulses, and wherein for each actuation cycle, said actuator is supplied with at least one pulse of duration Tend comprising: determining the time Tp taken for the current through the actuator to achieve a threshold value, and varying the pulse duration Tend dependent on the value Tp. The actuator may be a solenoid operated valve, e.g. of a fuel injector.

IPC Classes  ?

• F02D 41/20 - Output circuits, e.g. for controlling currents in command coils
• F02D 41/34 - Controlling fuel injection of the low pressure type with means for controlling injection timing or duration
• F02D 41/40 - Controlling fuel injection of the high pressure type with means for controlling injection timing or duration

Abstract

According to an aspect of the present invention there is provided a pump for supplying high- pressure fuel to a common rail fuel injection system. The pump has a head housing and a pumping chamber is defined within the head housing. A bore for receiving a pumping element is arranged for reciprocal movement within the bore. The pump comprises means for compensating for dilation of the pumping element and/or the bore under operational loads.

IPC Classes  ?

• F02M 61/16 - Fuel injectors not provided for in groups  or - Details not provided for in, or of interest apart from, the apparatus of groups
• F02M 59/44 - Pumps specially adapted for fuel-injection and not provided for in groups - Details, component parts, or accessories not provided for in, or of interest apart from, the apparatus of groups
• F02M 59/02 - Pumps specially adapted for fuel-injection and not provided for in groups of reciprocating-piston type

Abstract

A fuel pump (10) is disclosed. It has a housing (12) provided with an axial bore (14) defining a compression chamber (16). The pump (10) is further provided with a cylindrical piston (18) slidably arranged in the bore (14), the piston (18) extending from a top extremity that is inside the bore (14), defining a high pressure extremity, to a lower extremity, defining a low pressure extremity. The piston (18) is able to reciprocally slide between a lower position where fuel at low pressure enters the compression chamber (16) via an inlet and, an top position where fuel present in the compression chamber (16) is pressurized before being expelled via an outlet. The piston (18) is also provided with a dilation mean (20, 22) arranged on its high pressure extremity, said mean (20, 22) enabling the piston (18) to expand radially when fuel in the compression chamber (16) is pressurized.

IPC Classes  ?

• F02M 59/44 - Pumps specially adapted for fuel-injection and not provided for in groups - Details, component parts, or accessories not provided for in, or of interest apart from, the apparatus of groups
• F02M 61/16 - Fuel injectors not provided for in groups  or - Details not provided for in, or of interest apart from, the apparatus of groups

Abstract

The invention relates to a connector (1) with a lever (7) for connection assistance. Said connector (1) includes a housing (5) on which the lever (7) is mounted. The lever (7) includes locking tabs (29) for locking the lever (7) relative to the housing (5), in at least one open position in which the connector can be coupled with a counter-connector (2) and a closed position, in which the lever (7) keeps the connector (1) coupled with the counter-connector (2).

IPC Classes  ?

• H01R 13/629 - Additional means for facilitating engagement or disengagement of coupling parts, e.g. aligning or guiding means, levers, gas pressure

Abstract

A method of controlling a catalytic exhaust system including a first catalytic unit located upstream of a second catalytic unit, comprising: i) providing a relationship between the temperature of the first catalytic unit, the amount of NH3 stored in the second catalytic unit and the corresponding limit value of the amount of NH3 permitted in the first unit; ii) measuring or estimating the amount of NH3 in the second catalytic unit; iii) measuring or estimating the temperature of the first catalytic unit; iv) using said relationship and measured/estimated parameters of steps ii) and iii) to providing a said limit value for the amount of NH3 to be stored in said first catalytic unit v) using said parameter from iv) in the control of said system.

IPC Classes  ?

• F01N 3/20 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion
• F01N 3/035 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices with catalytic reactors
• F01N 9/00 - Electrical control of exhaust gas treating apparatus
• F01N 13/00 - Exhaust or silencing apparatus characterised by constructional features
• F01N 13/02 - Exhaust or silencing apparatus characterised by constructional features having two or more separate silencers in series

Abstract

A seal arrangement (50) configured to provide a seal for an actuator against an internal bore of a fuel injector. The seal arrangement comprises a seal member (52) having a longitudinal axis (L) and defining a high pressure side (60) and a low pressure side (62); and one or more terminal passages (68) defined in the seal member (52) for accommodating a respective one or more electrical terminals (46). The seal member (52) includes an outer sealing surface (61) configured such that contact pressure between the outer sealing surface (61) and a mating surface (91 )of the bore increases in dependence on a pressure differential between the high pressure side (60) and the low pressure side (62), in use.

IPC Classes  ?

• F02M 51/00 - Fuel-injection apparatus characterised by being operated electrically
• F02M 55/00 - Fuel-injection apparatus characterised by their fuel conduits or their venting means

Abstract

BOBBIN WITH VENTING CONDUIT ABSTRACT OF THE DISCLOSURE Bobbin assembly (44) of an electromagnetic actuator (30), adapted to be in a fuel injector (5), the bobbin assembly (44) comprising: -a core (93) extending along a main axis -a wire coil (92) arranged around the core (93), the coil being over-moulded so that it has a cylindrical external surface (108) extending axially from a first surface (104) to a second surface and, -an axial blind bore (43) extending axially and inwardly inside the bobbin assembly (44) from the first surface (104) to the distal end (106), the blind bore (43) adapted to accommodate a spring (33) for biasing a magnetic armature; characterizedin that: the bobbin assembly (44) is further provided with a venting conduit (42) extending through the over-moulding (96) from the blind axial bore (43) to the external cylindrical surface (108). Figure 4

IPC Classes  ?

• F02M 47/02 - Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure of accumulator-injector type, i.e. having fuel pressure of accumulator tending to open, and fuel pressure in other chamber tending to close, injection valves, and having means for periodically releasing that closing pressure
• F02M 55/00 - Fuel-injection apparatus characterised by their fuel conduits or their venting means
• F02M 63/00 - SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF - Details, component parts or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups  or     

Abstract

A magnetic armature (22) adapted to cooperate with the solenoid (18) of an electromagnetic actuator (16) is provided with a spacer (32) made of non- magnetic material integral to a face (30) adapted to face the solenoid (18). The thickness (T) of the spacer (32) is inferior to 200 µm.

IPC Classes  ?

• F02M 63/00 - SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF - Details, component parts or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups  or     
• F02M 61/16 - Fuel injectors not provided for in groups  or - Details not provided for in, or of interest apart from, the apparatus of groups

Abstract

A fuel pump (18) comprises a fixed body (30) and a camshaft (36) cooperating with a piston slidably guided within a bore. The camshaft (36) is adapted to rotate and reciprocally actuate the piston inside the bore in order to pressurize fuel within a compression chamber. The camshaft (36) is provided with an integral fluid damper (42) adapted to damp hydraulic waves propagating in the fluid flowing through the rotational guiding (38).

IPC Classes  ?

• F02M 55/04 - Means for damping vibrations in injection-pump inlets
• F02M 59/02 - Pumps specially adapted for fuel-injection and not provided for in groups of reciprocating-piston type
• F02M 59/14 - Pumps specially adapted for fuel-injection and not provided for in groups having other positive-displacement pumping elements, e.g. rotary of elastic-wall type
• F02M 59/44 - Pumps specially adapted for fuel-injection and not provided for in groups - Details, component parts, or accessories not provided for in, or of interest apart from, the apparatus of groups
• F04B 11/00 - Equalisation of pulses, e.g. by use of air vessels; Counteracting cavitation
• F01M 9/10 - Lubrication of valve gear or auxiliaries
• F01L 1/047 - Camshafts

Abstract

A high pressure fuel pump (10) comprises a pump head (12) from which extends a turret (16), a blind bore (20) extends along amain axis (A) from a pumping chamber (22)then through the turret (16) until an open end (24). A piston (32) is arranged in the bore (20) and protrudes out of the pump turret, the outer extremity (36) being provided with a cam follower. A spring (40) is arranged around the piston (32) and slipped over the turret (16), the spring (40) is compressed between the cam follower and the main part (14) of the pump head. The pump (10) is further provided with a cup shape sleeve (42) arranged around the turret (16) and reserving a thin volume (54) between the turret (16) and the peripheral wall (46). The bottom face (44) of the sleeve is provided with a hole (50) through which extends the piston (32). In operation, part of the fuel pressurized in the pumping chamber (22) leaks between the piston (32) and the bore (20), gets out of the turret (16) and fills said thin volume (54) prior to exiting the sleeve (42).

IPC Classes  ?

• F02M 59/10 - Pumps specially adapted for fuel-injection and not provided for in groups of reciprocating-piston type characterised by the piston drive
• F04B 1/04 - Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
• F02M 59/44 - Pumps specially adapted for fuel-injection and not provided for in groups - Details, component parts, or accessories not provided for in, or of interest apart from, the apparatus of groups

Abstract

A fuel pump unit (10) having a pump head (12) provided with an axial (A) blind bore (14) within which is arranged a piston (20) extending from an inner end (22), inside the bore (14), to an outer end (24), outside the head (12), the outer end cooperating with a cam follower (26) and a cam (28) that rotations reciprocally displace the piston (20). The pump unit (10) further comprises a coil spring (44) axially compressed between pump head (12) and the cam follower (26) and a tubular turret assembly (30) extending toward the cam (28) and provided with a through bore (40) through which extends the piston (20), the final spirals (46) of the spring (44) being slipped around the outer surface of the turret (30).The turret (30) in an added part, non-integral to the pump head (12) and, arranged in abutment against an under face (16) of the pump head (12), the blind bore (14) being coaxial (A) to said through bore (40) arranged in the turret (30).

IPC Classes  ?

• F02M 59/44 - Pumps specially adapted for fuel-injection and not provided for in groups - Details, component parts, or accessories not provided for in, or of interest apart from, the apparatus of groups
• F02M 59/48 - Assembling; Disassembling; Replacing

Abstract

A reductant delivery system for a SCR system in an internal combustion engine comprises a reductant tank (52) and a dosing valve (54) connected via a feed line (53). A coolant loop (60) using hot engine coolant comprises: flow restrictor means (68) dividing the coolant loop (60) in an upstream, first section (62a) on the inlet side, and a downstream, second section (62b); a tank loop (64) connected to the coolant loop (60) upstream and downstream of the flow restrictor means (68) and passing through the reductant tank (52) for thawing frozen reductant solution; a doser section (66), downstream of the tank loop (64), to carry engine coolant of the second section (62b) and arranged in thermal exchange relationship with said dosing valve (54) for cooling thereof; and valve means (70; 72; 76; 80) operable to allow or stop the flow of engine coolant through said tank loop (64).

IPC Classes  ?

• F01N 3/20 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion

Abstract

A method of controlling variable orifice nozzle fuel injectors in a combustion engine, said injectors being operable in at least two modes comprising: determining that there is a need to switch from a first mode to a second mode, and wherein switching of the modes is performed in progressive fashion.

IPC Classes  ?

• F02M 61/18 - Injection nozzles, e.g. having valve-seats
• F02M 45/08 - Injectors peculiar thereto
• F02M 45/12 - Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship providing a continuous delivery with variable pressure
• F02D 41/00 - Electrical control of supply of combustible mixture or its constituents
• F02D 41/24 - Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means
• F02D 41/30 - Controlling fuel injection

Abstract

According to an aspect of the present invention, there is provided a fuel injection nozzle for injecting fuel into a combustion chamber of an internal combustion engine. The nozzle includes a nozzle body having a bore for receiving fuel from a supply line for pressurized fuel. At least one injection opening is provided for delivering fuel from the bore to the combustion chamber, the at least one injection opening having a total cross sectional area (Atot). A needle is longitudinally displaceable within the bore between a closed position in which the flow of fuel through the at least one injection opening into the combustion chamber is prevented, and an injection position in which the flow of fuel through the at least one injection opening into the combustion chamber is enabled. A restriction is provided for restricting the flow of fuel through the bore. The restriction is dimensioned as a function of the total cross sectional area (Atot) of the at least one injection opening.

IPC Classes  ?

• F02M 47/02 - Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure of accumulator-injector type, i.e. having fuel pressure of accumulator tending to open, and fuel pressure in other chamber tending to close, injection valves, and having means for periodically releasing that closing pressure
• F02M 61/12 - Other injectors with elongated valve bodies, i.e. of needle-valve type characterised by the provision of guiding or centring means for valve bodies

Abstract

The invention relates to a fuse holder (1) comprising two housing elements (4, 5) which, once assembled, together form a tube in which a support (9) for a fuse (10) is accommodated. Each of the two housing elements (4, 5) comprises a contact (3) for establishing an electrical contact with a terminal (10a) of a fuse (10) housed in the support (9), when the support (9) is installed between the assembled housing elements (4, 5). The support (9) may comprise means (16) to ensure the correct position of each contact (3) in its respective housing element (4 or 5). The support (9) may also comprise means (13a) to ensure the correct orientation of the fuse (10) in the support (9). The support (9) may also comprise means (15a) for retaining a seal (11) ensuring sealing between the two housing elements (4, 5).

IPC Classes  ?

• H01H 85/00 - Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
• H01H 85/20 - Bases for supporting the fuse; Separate parts thereof
• H01H 85/24 - Means for preventing insertion of incorrect fuse

Abstract

The invention relates to a fuse holder (1) comprising two housing elements (4, 5) which, once assembled, together form a tube in which a fuse (10) is accommodated. One of the elements of housing (4, 5) includes a base (4a) extending longitudinally along the direction of assembly (A) of the two housing elements (4, 5) with each other. A seal (11) is placed on the base (4a) mainly in a plane perpendicular to the direction of assembly (A). During assembly, the other housing element is brought to at least partially cover the base (4a) to sandwich the seal (11) between the two housing elements (4, 5). A rim (4c) extends around the base (4a) in the direction of assembly (A) in order to protect the seal (11) until the two housing elements (4, 5) are assembled together.

IPC Classes  ?

• H01H 85/00 - Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
• H01H 85/20 - Bases for supporting the fuse; Separate parts thereof
• H01H 85/24 - Means for preventing insertion of incorrect fuse

Abstract

The invention relates to a filter (28) with an aqueous solution such as urea, for a selective catalytic reduction system of a diesel vehicle, comprising a housing provided with an inlet and an outlet, said housing containing a filtering element, and a means for detecting the volume variations linked to the phase changes of the aqueous solution, characterised in that the filter is also provided with means (17) for signalling said changes of volume of the phase of the aqueous solution.

IPC Classes  ?

• B01D 35/143 - Filter condition indicators
• B01D 35/18 - Heating or cooling the filters
• B01D 29/60 - Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups ;   Filtering elements therefor integrally combined with devices for controlling the filtration