A brake actuator for a vehicle, in particular a commercial vehicle, the brake actuator comprising an actuator housing, and a push rod mounted inside said actuator housing, said push rod being adapted to be coupled to a brake mechanism and to move in a reciprocating manner between a retracted position and an extended position, wherein the movement between the retracted position and the extended position defining a stroke. The invention suggests a brake actuator that comprises a sensor device for measuring a stroke position of the push rod of the brake actuator.
The invention relates to a valve (100) for controlling flow pressurized fluid to a trailer (200) attached to a vehicle comprising a housing (110) including a lateral extension (120) and a guide (124) with a sliding surface (126), a first port (P11) for receiving pressurized fluid from a first source of pressurized fluid, a second port (P22) selectively connected to the first port (P11), wherein the second port (P11) is configured to provide control pressure to brakes provided at the trailer (200). A third port (P12) is provided in the valve (100) that is operably and selectively connected to the first port (P11) and is configured to provide supply pressure to the brakes provided at the trailer (200). Finally, said valve (100) an intermediary valve unit (118) configured to directly facilitate the connection between at least the first port (P11) and particularly, the third port (P12).
B60T 15/24 - Valves-relais triples ou autres permettant l'application ou le relâchement par à-coups et qui sont actionnées par la variation de pression dans le tuyau de frein reliant les cylindres de frein ou organes équivalents à la source d'air comprimé, au vide ou à l'atmosphère commandées par trois pressions de fluides
3.
A SPRING BRAKE ACTUATOR FOR A VEHICLE, IN PARTICULAR PARKING OR EMERGENCY BRAKE ACTUATOR FOR USE IN A COMMERCIAL VEHICLE
The invention relates to a spring brake actuator (1) for a vehicle comprising a cylinder housing (2) having a base (5) and a spring seat (7) on the base, a spring brake piston (9) located in said housing (5) for applying a braking force, a compression spring (11) arranged between the spring seat (7) and the piston (9), the spring being effective to push the piston (9) away from the base (5), wherein the housing (2) is divided into a spring chamber (12) and a pressure chamber (14), the compression spring being arranged in the spring chamber and the pressure chamber being supplied with pressurized fluid. The spring brake actuator (1) comprises an elastically deformable diaphragm (16) that comprises an annular flange (17) which is sealingly mounted to the housing (2) and an inner periphery (18) which is sealingly mounted to the piston (9) such that the pressure chamber (14) is fluid-tightly isolated from the spring chamber (12).
The invention relates to a brake actuator (1) for a vehicle, in particular commercial vehicle, the brake actuator comprising an actuator housing (3) having a piston chamber (15,17) and a first fluid opening (31 ) for providing pressurized fluid to the piston chamber from a pressure source (100), a push rod (9) mounted inside the actuator housing (3), the push rod (9) having a mounting interface (29) for coupling the push rod (9) to a brake mechanism and being configured for reciprocating movement between a retained position and an extended position, and a piston (7) that is coupled to the push rod (9). In particular, the invention suggests that the piston (7) sealingly abuts against the actuator housing (3) and divides the piston chamber into a pressure chamber (15) and a non-pressure chamber (17), the first fluid opening (31 ) being in fluid communication with the pressure chamber (15) such that pressurized fluid entering the pressure chamber (15) through the first fluid opening (31 ) acts directly on the piston (7).
The invention relates to a control valve (100) for an air brake system (1000), in particular trailer control valve (101), comprising: a main supply input (11), a trailer control output (22), a first and second service brake control input (41, 42), a hand brake control input (43), a valve supply chamber (110) comprising a control piston (122), at least one supply aperture (112) for passing a supply air flow (FSA) from the main supply input (11) to the valve supply chamber (110). The control valve (100) is characterized in that the valve supply chamber (110) further comprises a throttle module (114), wherein the throttle module (114) is actuatable by a relay piston (140) in a translational movement (MT) along a valve axis (AV), so as to partially or fully throttle the supply air flow (FSA).
B60T 15/24 - Valves-relais triples ou autres permettant l'application ou le relâchement par à-coups et qui sont actionnées par la variation de pression dans le tuyau de frein reliant les cylindres de frein ou organes équivalents à la source d'air comprimé, au vide ou à l'atmosphère commandées par trois pressions de fluides
Pneumatic control valve (1), in particular dual-circuit brake transducer in a compressed-air brake system of a vehicle for correcting a brake pressure which corresponds to a desired braking action, having at least one first valve system (10, 14) which is arranged in a housing upper part (2) and has a first valve piston (10) which interacts with a first annular plate valve (14) and can be actuated manually or by means of an actuator via a spring element (9) by means of a plunger piston (4), having a second valve system (30, 37) which is arranged in a housing lower part (3) with a coaxially arranged second valve piston (30) which can be actuated pneumatically and/or mechanically by the first valve system (10, 14) and with a second annular plate valve (37) which interacts therewith, the plunger piston (4) having, radially on the inside, an axial cylindrical projection (4a, 4b), by means of which the plunger piston (4) is guided in cylindrical guides (2a, 42b) in the region of the housing upper part (2) and in the region of the housing lower part (3). In order to configure the control valve to be small axially and to relieve the first valve piston (10) of transverse forces and tilting moments, the said first valve piston (10) is guided via the plunger piston (4) in the cylindrical guide (2a) in the housing upper part (2).
The invention relates to a pneumatic control valve (1), in particular dual-circuit brake transducer in a compressed-air brake system of a vehicle for correcting a brake pressure which corresponds to a desired braking action, having at least one first valve system (10, 14) which is arranged in a housing upper part (2) with a first valve piston (10) which can be actuated via an elastomer spring element (9) manually or by means of an actuator and with a first annular plate valve (14) which interacts therewith, and having a second valve system (30, 37) which is arranged in a housing lower part (2) with a coaxially arranged second valve piston (30) which can be actuated pneumatically and/or mechanically by the first valve system (10, 14) and with a second annular plate valve (37) which interacts therewith. In order to avoid or at least to reduce an impairment of the sealing action of the first valve piston (10) in the housing upper part (2) as a result of transverse forces and tilting moments which can be produced by a plunger piston (4), it is provided that, in the case of the first valve system (10, 14), the elastomer spring element (9) and the first valve piston (10) are configured in one piece as a composite component, and that, in the region of a radial sealing lip (9a) of the elastomer spring element (9), the material of the elastomer spring element (9) engages radially and axially in a positively locking manner around a radially outer section of the first valve piston (10).
The invention refers to a lift axle control valve module (2) for a lift axle suspension system of a vehicle, said lift axle control valve module (2) comprising a pneumatic spool valve for adjusting the air volume of at least a suspension bellow and a lift bellow, a pressure differential valve for controlling said spool valve, an electrically actuated pneumatic valve device (7, 8) for receiving at least one electric control signal and for controlling said pressure differential valve (9), and a relay valve (10) controlled by said pneumatic spool valve (4), a load sensing valve (18) for delivering a signal pressure (p1) in dependence of an axle weight in order to control the pneumatic valve device (7, 8) and/or the pressure differential valve (9), wherein said lift axle control valve module (2) comprises a layer stack arrangement (100) with at least two valve levels (51, 52, 53) and at least two layers (41, 42, 43, 44) comprising air passages (11a, 11b, 11c, 11d, 11e, 11f, 11g, 11h, 11k, 11m) for conducting air, wherein the spool valve (4), the pressure differential valve (9), the electrically actuated pneumatic valve device (7, 8) and the relay valve (10) are integrated in the layer stack arrangement (100) and the load sensing valve (18) is fixed to the layer stack arrangement (100) and connected to the air passages (11m, 11k) of the layer stack arrangement (100).
B60G 17/052 - Caractéristiques des ressorts pneumatiques
B62D 61/12 - Véhicules à moteur ou remorques, caractérisés par la disposition ou le nombre de roues et non prévus ailleurs, p. ex. quatre roues disposées en losange avec un nombre variable de roues en contact avec le sol, p. ex. avec certaines roues disposées plus haut que les autres ou avec des roues rétractables
F15B 13/00 - Parties constitutives des systèmes de servomoteurs
F16K 27/00 - Structures des logementsMatériaux utilisés à cet effet
The invention refers to a lift axle control unit (1) for a lift axle suspension system (30) of a vehicle (1000), said lift axle control unit (1) comprising at least: an electronic control unit (4) receiving at least a first electric input signal (S1) and a position indicating signal (S4), at least one supply input port (100) to be connected to a pressure reservoir (2), a first delivery port (220) to be connected to at least one suspension bellow (14) and a second delivery port (250) to be connected to at least one lift bellow (16), a load detection valve (3) being connectable to load variable parts (1010) of said vehicle (1000) and delivering an pressure output signal (p3) in dependence of an axle load of the vehicle (1000), a first relay valve (6) connected to said first delivery port (220) for feeding said suspension bellow (14), a second relay valve (7) connected to said second delivery port (250) for feeding at least one lift bellow (16), a solenoid valve (5) for receiving an electric control signal (S5) from said electronic control unit (4) and for connecting said load detection valve (3) to said first and second relay valve (6, 7) or separating it from said first and second relay valve (6, 7) in dependence of said electric control signal (S5).
An internal breather valve (50) for use with a spring brake actuator in an air brake system of a motor vehicle, said valve comprising: a main body (51) adapted to fit into the end portion (5) of a stem of the spring brake actuator, a fluid channel formed in and extending through the main body, a valve seat (67) formed in the main body and communicating with the fluid channel, a vented diaphragm (55) which is movably mounted inside the main body and adapted to sealingly engage the valve seat, and an elastically deformable member (53) linking the diaphragm and the main body such that the vented diaphragm is held in a normally-open position.
A load detection valve (2) for a lift axle control system of a motor vehicle is disclosed. The load detection valve comprises an air supply port (20) for receiving air; an air delivery port (21) for delivering air with a delivery pressure (p2); a cam (10) for rotating in relationship to an axle load; a slidable piston assembly (14); a valve means (24) being displaceable provided in said piston assembly (14); a follower means (12) for actuating said valve means (24); said follower means (12) being shiftable in dependence of said cam rotation; a graduating spring (16) for loading said piston assembly (14); a conduit (30) connected to said air delivery port (21); said delivery pressure in said conduit (30) acting on said piston assembly (14) against said graduating spring (16) in order to output said delivery pressure (p2) in dependence of said graduating spring (16).
B62D 61/12 - Véhicules à moteur ou remorques, caractérisés par la disposition ou le nombre de roues et non prévus ailleurs, p. ex. quatre roues disposées en losange avec un nombre variable de roues en contact avec le sol, p. ex. avec certaines roues disposées plus haut que les autres ou avec des roues rétractables
B62D 5/08 - Direction assistée ou à relais de puissance à fluide, c.-à-d. au moyen d'un fluide sous pression produisant toute la force nécessaire, ou la plus grande partie de celle-ci, pour commander la direction du véhicule caractérisée par le type de valve utilisé
15.
LIFT AXLE CONTROL VALVE ASSEMBLY FOR A MOTOR VEHICLE
A lift axle control valve assembly (1) for a lift axle suspension system comprises: a pneumatic spool valve (4) for adjusting the air volume of at least a suspension bellow (14) and a lift bellow (16), a pressure differential valve (9) for controlling said spool valve (4), an electrically actuated pneumatic valve device (7, 8) for receiving at least one electric control signal (SI, S2) and controlling said pressure differential valve (9), and a relay valve (10) controlled by said pneumatic spool valve (4), wherein said lift axle control valve assembly (1) comprises a multilayer construction with at least two valve levels and at least two layers comprising air passages (11a,11b, 11c, 11d, 11e, 11f, 11g, 11h, 11k) for conducting air, wherein said valve levels are separated by at least two layers, wherein said valves are positioned in said valve levels an connected with each other by said air passages (11) of said layers.
B60G 17/052 - Caractéristiques des ressorts pneumatiques
B60G 11/27 - Suspensions élastiques caractérisées par la disposition, l'emplacement ou le type des ressorts ayant des ressorts à fluide uniquement, p. ex. ressorts hydropneumatiques dans lesquels le fluide est un gaz
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