The invention relates to a gas injection valve (10.1) comprising: a housing (11) which has a fuel inlet (22) and an injection valve seat (23) having an outwardly opening valve sealing surface (231); an injection valve element (31) which is designed to interact with the injection valve seat (23); wherein the injection valve element (31) has a control piston (311) which is guided in a sliding fit in a first guide recess (114), wherein a control needle (34) abuts an end face of the control piston (311) and is guided in a sliding fit in a control bore (116), wherein the control bore (116) connects the first guide recess (114) to a second guide recess (115) in which a hydraulic control piston (35) abutting an end face of the control needle (34) is guided in a sliding fit, wherein the gas injection valve (10.1) has a hydraulic control device (41) which is designed to adjust the hydraulic control piston (35) by changing a control pressure in a hydraulic control chamber (117) arranged in the second guide recess (115), wherein the control needle (34) and the injection valve element (31) can be moved by adjusting the hydraulic control piston (35).
F02M 21/02 - Appareils pour alimenter les moteurs en combustibles non liquides, p. ex. en combustibles gazeux stockés sous forme liquide en combustibles gazeux
The invention relates to a fuel injection valve (10.1), comprising: a housing which has a control fluid inlet, a fuel inlet and a nozzle body having an injection valve seat; a high-pressure control chamber (32) which is arranged in the housing and is connected to the control fluid inlet; a fuel chamber (22) which is arranged in the housing and extends from the fuel inlet to the injection valve seat; a control piston (51) which is arranged in the housing in a displaceable manner along a longitudinal axis (L) and to a which a closing force directed towards the injection valve seat can be applied by a control pressure spring; a hydraulic control device for controlling the displacement of the control piston along the longitudinal axis; a nozzle needle which is arranged at an end of the control piston facing the injection valve seat and which is designed to interact with the injection valve seat in order to inject fuel into the combustion chamber of the internal combustion engine, wherein the nozzle needle can be moved by displacement of the control piston along the longitudinal axis.
F02M 47/02 - Appareils d'injection à fonctionnement périodique avec clapets d'injection actionnés par la pression du fluide du type accumulateurs-injecteurs, c.-à-d. dans lesquels la pression du combustible dans l'accumulateur tend à ouvrir et la pression du combustible dans une autre chambre tend à fermer les clapets d'injection et comportant des moyens pour supprimer périodiquement cette pression de fermeture
F02M 61/12 - Autres injecteurs avec corps des clapets allongés, p. ex. du type soupapes à aiguille caractérisés par l'existence de moyens de guidage ou de centrage pour les corps de clapets
F02M 61/18 - Buses d'injection, p. ex. comportant des sièges de clapets
F02D 19/06 - Commande des moteurs caractérisés par l'emploi de combustible non liquide, de combustibles multiples ou de substances non combustibles ajoutées au mélange carburant particulière aux moteurs fonctionnant avec des combustibles multiples, p. ex. alternativement du fuel léger et du fuel lourd, et autres que les moteurs indifférents au combustible utilisé
3.
FUEL INJECTION VALVE FOR INTERNAL COMBUSTION ENGINES
The invention relates to a fuel injection valve (10.1), comprising a nozzle chamber (165) and a first and a second injection valve seat (163, 164), and at least one first and at least one second injection opening (161, 162) emanating from the nozzle chamber (165), a movably arranged injection valve member (56), which has a main needle (57), a needle sleeve (58), and a needle pin (59) arranged at least partially in the needle sleeve (58), the needle sleeve (58) having a first valve sealing face (581) for sealingly cooperating with the first injection valve seat (163) for connecting and separating the at least one first injection opening (161) to and from a high-pressure chamber (26), and the needle pin (59) having a second valve sealing face (591) for sealingly cooperating with the second injection valve seat (164) for connecting and separating the at least one second injection opening (162) to and from the high-pressure chamber (26).
F02M 21/02 - Appareils pour alimenter les moteurs en combustibles non liquides, p. ex. en combustibles gazeux stockés sous forme liquide en combustibles gazeux
F02M 47/02 - Appareils d'injection à fonctionnement périodique avec clapets d'injection actionnés par la pression du fluide du type accumulateurs-injecteurs, c.-à-d. dans lesquels la pression du combustible dans l'accumulateur tend à ouvrir et la pression du combustible dans une autre chambre tend à fermer les clapets d'injection et comportant des moyens pour supprimer périodiquement cette pression de fermeture
F02D 19/06 - Commande des moteurs caractérisés par l'emploi de combustible non liquide, de combustibles multiples ou de substances non combustibles ajoutées au mélange carburant particulière aux moteurs fonctionnant avec des combustibles multiples, p. ex. alternativement du fuel léger et du fuel lourd, et autres que les moteurs indifférents au combustible utilisé
F02M 53/04 - Injecteurs avec moyens de chauffage, de refroidissement ou d'isolation thermique
F02M 61/18 - Buses d'injection, p. ex. comportant des sièges de clapets
4.
Fuel injection valve for internal combustion engines
The fuel injection valve has a hydraulic control device for controlling the axial movement of the injection valve member. The stem of the intermediate valve member of mushroom-shaped configuration of the intermediate valve is guided in the guide recess of the intermediate part. In the open position, the intermediate valve member opens up a second connection between a high-pressure fuel inlet and a valve chamber and, in the closed position, the intermediate valve member shuts off the second connection between the high-pressure fuel inlet and the valve chamber. In the closed position of the intermediate valve member, the head of the intermediate valve member lies with a side facing toward the intermediate part against the intermediate valve seat via a first sealing surface, which runs around the stem or the guide recess at a first radial spacing so as to form a first annular sealing surface which is continuous in the circumferential direction.
F02M 47/00 - Appareils d'injection à fonctionnement périodique avec clapets d'injection actionnés par la pression du fluide
F02M 47/02 - Appareils d'injection à fonctionnement périodique avec clapets d'injection actionnés par la pression du fluide du type accumulateurs-injecteurs, c.-à-d. dans lesquels la pression du combustible dans l'accumulateur tend à ouvrir et la pression du combustible dans une autre chambre tend à fermer les clapets d'injection et comportant des moyens pour supprimer périodiquement cette pression de fermeture
F02M 63/00 - Autres appareils d'injection ayant des caractéristiques particulières non couvertes dans les groupes ou Détails, parties constitutives ou accessoires non couverts dans les groupes ou ou présentant un intérêt autre que celui visé par ces groupes
5.
FUEL INJECTION VALVE FOR INTERNAL COMBUSTION ENGINES
The fuel injection valve (10) has a hydraulic control device (72) for controlling the axial movement of the injection valve member (56). The stem (76) of the intermediate valve member (78) of mushroom-shaped configuration of the intermediate valve (83) is guided in the guide recess (74) of the intermediate part (66). In the open position, the intermediate valve member (78) opens up a second connection (118, 117, 96) between a high-pressure fuel inlet (86) and a valve chamber (44) and, in the closed position, the intermediate valve member (78) shuts off the second connection (118, 117, 96) between the high-pressure fuel inlet (86) and the valve chamber (44). In the closed position of the intermediate valve member (78), the head (80) of the intermediate valve member (80) lies with a side facing toward the intermediate part (66) against the intermediate valve seat (82) via a first sealing surface (111.2), which runs around the stem (76) or the guide recess (74) at a first radial spacing (r1) so as to form a first annular sealing surface (121) which is continuous in the circumferential direction, and via a second sealing surface (112.2), which runs around the stem (76) or the guide recess (74) at a second radial spacing (r2) so as to form a second annular sealing surface (122) which is continuous in the circumferential direction, wherein the first radial spacing (r1) is greater than the second radial spacing (r2).
F02M 47/02 - Appareils d'injection à fonctionnement périodique avec clapets d'injection actionnés par la pression du fluide du type accumulateurs-injecteurs, c.-à-d. dans lesquels la pression du combustible dans l'accumulateur tend à ouvrir et la pression du combustible dans une autre chambre tend à fermer les clapets d'injection et comportant des moyens pour supprimer périodiquement cette pression de fermeture
F02M 63/00 - Autres appareils d'injection ayant des caractéristiques particulières non couvertes dans les groupes ou Détails, parties constitutives ou accessoires non couverts dans les groupes ou ou présentant un intérêt autre que celui visé par ces groupes
6.
FUEL INJECTION VALVE HAVING A SLIDE VALVE FOR INTERNAL COMBUSTION ENGINES
The invention relates to a fuel injection valve for intermittent fuel injection into the combustion chamber of an internal combustion engine, the valve having a slide valve body (42) which is guided by a sliding fit (40). A blind-hole-shaped recess (70), which is centered relative to the longitudinal axis (38) and originates from the first end face (44) facing the control chamber (32), is formed thereon. From the base (72) of said recess, both the throttle admission (66) and the throttle passage (48) lead to the second end face (46). The throttle passage (48) can be connected to the high pressure chamber (20) via a throttle inlet (64), also formed on the slide valve body (42). When the slide valve body (42) contacts the control element (50), the throttle admission (66) is closed and the throttle passage (48) and the control passage (58) are connected to each other. However, if the slide valve body (42) lifts off from the control element (50) - in order to end an injection process - a gap (68) forms which exposes the throttle admission (66) and as a result, fuel can flow from the high pressure chamber (20) through the throttle admission (66) and the throttle passage (48) into the control chamber (32).
F02M 47/02 - Appareils d'injection à fonctionnement périodique avec clapets d'injection actionnés par la pression du fluide du type accumulateurs-injecteurs, c.-à-d. dans lesquels la pression du combustible dans l'accumulateur tend à ouvrir et la pression du combustible dans une autre chambre tend à fermer les clapets d'injection et comportant des moyens pour supprimer périodiquement cette pression de fermeture
F02M 63/00 - Autres appareils d'injection ayant des caractéristiques particulières non couvertes dans les groupes ou Détails, parties constitutives ou accessoires non couverts dans les groupes ou ou présentant un intérêt autre que celui visé par ces groupes
The fuel injection valve (10) has a hydraulic control device (72) for controlling the axial movement of the injection valve member (56). The stem (76) of the intermediate valve member (78) of mushroom-shaped configuration of the intermediate valve (83) is guided in a sliding fit in the guide recess (74) of the intermediate part (66). The intermediate valve member (78) separates the control chamber (70) from the valve chamber (44) apart from the throttle passage (90) which is configured on the intermediate valve member. Furthermore, the throttle inlet (96) which is connected to the high pressure chamber (26) is configured on the intermediate valve member (78).
F02M 47/02 - Appareils d'injection à fonctionnement périodique avec clapets d'injection actionnés par la pression du fluide du type accumulateurs-injecteurs, c.-à-d. dans lesquels la pression du combustible dans l'accumulateur tend à ouvrir et la pression du combustible dans une autre chambre tend à fermer les clapets d'injection et comportant des moyens pour supprimer périodiquement cette pression de fermeture
F02M 63/00 - Autres appareils d'injection ayant des caractéristiques particulières non couvertes dans les groupes ou Détails, parties constitutives ou accessoires non couverts dans les groupes ou ou présentant un intérêt autre que celui visé par ces groupes
F02M 63/02 - Appareils d'injection de combustible comportant plusieurs injecteurs alimentés par un élément de pompage commun ou ayant plusieurs éléments de pompage alimentant un injecteur communAppareils d'injection de combustible comportant la mise hors circuit des pompes, des éléments de pompe ou injecteursAppareils d'injection de combustible avec possibilités de connecter de façon variable et alternativement les éléments de pompage et les injecteurs
The invention relates to a common rail (16) having a preferably cube-shaped rail body (26) with a connection surface (44) and a control surface (62). All the hydraulic connections, such as the high-pressure inlet (30), the high-pressure outlets (32), the low-pressure feed inlet (38), the low-pressure feed outlet (40), and the return flow connection (46), are formed on the connection surface side. The fuel quantity regulating valve (64) which is connected between the low-pressure feed inlet (38) and the low-pressure feed outlet (40) is located on the control surface side. Furthermore, the pressure sensors (68), the pressure control valve (70), and the relief valve (72) are arranged on the control surface side. The protective cover (54) closes and protects the connection surface (62) and the elements arranged thereon from the surroundings.
F02M 63/00 - Autres appareils d'injection ayant des caractéristiques particulières non couvertes dans les groupes ou Détails, parties constitutives ou accessoires non couverts dans les groupes ou ou présentant un intérêt autre que celui visé par ces groupes
F02M 59/34 - Variation du débit du combustible en quantité ou dans le temps en étranglant les orifices d'entrée aux éléments de pompage ou des orifices de trop-plein
F02M 59/36 - Variation du débit du combustible en quantité ou dans le temps par des clapets réglant à des instants variables et bien déterminés les ouvertures de combustible
A fuel injection valve (10) comprises an intermediate valve with a mushroom-shaped intermediate valve member (78). The shaft (76) of the intermediate valve member (78) is guided with a sliding fit in the guiding passage (74) of an intermediate component (66). An annular space (120) is defined between the shaft (76) and the head (80) of the intermediate valve member (78) and the intermediate component (66), and a high-pressure inlet (86) opens into the annular space, which is formed by an inner annular space (108) and by a split ring space (118). The split ring space (118) is defined between the head (80) and the intermediate component (66), and is also radially outwardly defined by a sealing bead (112). The adhesion force between the intermediate valve member (78) and the intermediate component (66), which acts against the opening motion of the injection valve member (56), is minimized.
F02M 63/00 - Autres appareils d'injection ayant des caractéristiques particulières non couvertes dans les groupes ou Détails, parties constitutives ou accessoires non couverts dans les groupes ou ou présentant un intérêt autre que celui visé par ces groupes
F02M 47/02 - Appareils d'injection à fonctionnement périodique avec clapets d'injection actionnés par la pression du fluide du type accumulateurs-injecteurs, c.-à-d. dans lesquels la pression du combustible dans l'accumulateur tend à ouvrir et la pression du combustible dans une autre chambre tend à fermer les clapets d'injection et comportant des moyens pour supprimer périodiquement cette pression de fermeture
10.
Device for injecting fuel into the combustion chamber of an internal combustion engine
The housing (18) of the fuel injection valve (10) of the device for intermittently injecting fuel into the combustion chamber of an internal combustion engine comprises a high-pressure inlet (34) with a conical sealing face (44). The high-pressure chamber (36) is disposed in the housing (18) from the high-pressure inlet (34). A cartridge-like, independent component (56) is inserted into the high-pressure chamber (36). Said component comprises the valve carrier (46), the non-return valve (48), the holding element (50), and preferably the filter body (52′). The valve carrier (46) is provided with a conical outer sealing face (69), by which the valve carrier rests against the conical sealing face (44). A fixing element (74) presses the supply line (16) against the valve carrier (46).
F02M 61/04 - Injecteurs de combustible non couverts dans les groupes ou comportant des clapets
F02M 47/02 - Appareils d'injection à fonctionnement périodique avec clapets d'injection actionnés par la pression du fluide du type accumulateurs-injecteurs, c.-à-d. dans lesquels la pression du combustible dans l'accumulateur tend à ouvrir et la pression du combustible dans une autre chambre tend à fermer les clapets d'injection et comportant des moyens pour supprimer périodiquement cette pression de fermeture
F02M 55/00 - Appareils d'injection caractérisés par leurs conduits de combustible ou évents
F02M 61/16 - Détails non couverts dans les groupes ou présentant un intérêt autre que celui visé par ces groupes
F02M 67/10 - Injecteurs particuliers à cet effet, p. ex. du type sans clapet
11.
Fuel injection valve and device for injecting fuel
The fuel injection valve (1) for the intermittent injection of fuel into the combustion chamber of an internal combustion engine has a valve housing (12) that defines a longitudinal axis (14) and is provided with a high-pressure chamber (16). The connecting part (20) of the valve housing (12) has two identically formed high-pressure connections (22, 24) for high-pressure fuel lines. The two identically formed high-pressure connections (22, 24) are arranged in a common connecting face (30′) in such a way that said high-pressure connections are oriented in the same direction and the connection axes (22′, 24′) thereof run parallel to each other. In the interior of the valve housing (12), the high-pressure connections (22, 24) are connected to each other and to the high-pressure chamber (16).
The housing (18) of the fuel injection valve (10) of the device for intermittently injecting fuel into the combustion chamber of an internal combustion engine comprises a high-pressure inlet (34) with a conical sealing face (44). The high-pressure chamber (36) is disposed in the housing (18) from the high-pressure inlet (34). A cartridge-like, independent component (56) is inserted into the high-pressure chamber (36). Said component comprises the valve carrier (46), the non-return valve (48), the holding element (50), and preferably the filter body (52'). The valve carrier (46) is provided with a conical outer sealing face (69), by which the valve carrier rests against the conical sealing face (44). A fixing element (74) presses the supply line (16) against the valve carrier (46).
F02M 55/00 - Appareils d'injection caractérisés par leurs conduits de combustible ou évents
F02M 61/16 - Détails non couverts dans les groupes ou présentant un intérêt autre que celui visé par ces groupes
F02M 47/02 - Appareils d'injection à fonctionnement périodique avec clapets d'injection actionnés par la pression du fluide du type accumulateurs-injecteurs, c.-à-d. dans lesquels la pression du combustible dans l'accumulateur tend à ouvrir et la pression du combustible dans une autre chambre tend à fermer les clapets d'injection et comportant des moyens pour supprimer périodiquement cette pression de fermeture
13.
FUEL INJECTION VALVE AND DEVICE FOR INJECTING FUEL
The fuel injection valve (1) for the intermittent injection of fuel into the combustion chamber of an internal combustion engine has a valve housing (12) that defines a longitudinal axis (14) and is provided with a high-pressure chamber (16). The connecting part (20) of the valve housing (12) has two identically formed high-pressure connections (22, 24) for high-pressure fuel lines. The two identically formed high-pressure connections (22, 24) are arranged in a common connecting face (30') in such a way that said high-pressure connections are oriented in the same direction and the connection axes (22', 24') thereof run parallel to each other. In the interior of the valve housing (12), the high-pressure connections (22, 24) are connected to each other and to the high-pressure chamber (16).
Disclosed is a fuel injection valve (4) comprising a control member (70) that is provided with a control passageway (114) which is arranged eccentrically relative to the housing axis (8) and can be opened and closed by a closure piece (96) with the aid of an actuator assembly (26) in order to obtain intermittent injections. The control member (70) is positioned by means of a centering pin (124) in order to define the circumferential position of the eccentric control passageway (114). The centering pin (124) is guided within a pocket bore of the control member (70) as well as within a bore of an intermediate plate (12), a cylindrical element (13), or a spacing sleeve (202). The actuator assembly (26) is designed as an electromagnetic actuator (80) in which the stop (98; 99) for limiting the lift of the pilot valve member is designed as a monolithic component of the intermediate plate (12) or as a flat stop disk (97) in a separate workpiece. The eccentric position of the actuator assembly (26) and the design of the stop (98; 99) allow for a very compact design of the fuel injection valve. The compact design makes it possible to mount a suitable storage chamber in the monolithic housing body (10) of the fuel injection valve, above the high-pressure inlet bore (20).
The control apparatus (88) of a fuel injection valve comprises a mushroom-shaped intermediate valve member (56), which is guided in an intermediate element (94) with a sliding fit (94''). Together with a guide sleeve (78) and the lower surface of the intermediate element (94), the injection valve member (28), which has a control plunger (28'), for opening and closing injection openings so as to implement intermittent injection processes defines a control space (54). An outlet element (114) is located between the intermediate element (94) and the housing body (116) and delimits a valve space (70), which is hydraulically connected to the face of the stem (58) of the mushroom-shaped intermediate valve member (56). The intermediate valve member comprises a stem (58), which is guided in the intermediate element (94) with a sliding fit, and a head (60), which rests with the sealing surface (61) thereof at least partially against a surface (57) of an intermediate valve seat (59) configured on the intermediate element (94) in the closed position of the intermediate valve member (56) in order to separate the high pressure inlet (96) from the control space (54), wherein the sealing surface (61) of the head (60) and the surface (57) of the intermediate valve seat (59) are designed such that they create a throttled fluid connection between the high pressure inlet (96) and the sliding fit in the closed position of the intermediate valve (56').
F02M 47/02 - Appareils d'injection à fonctionnement périodique avec clapets d'injection actionnés par la pression du fluide du type accumulateurs-injecteurs, c.-à-d. dans lesquels la pression du combustible dans l'accumulateur tend à ouvrir et la pression du combustible dans une autre chambre tend à fermer les clapets d'injection et comportant des moyens pour supprimer périodiquement cette pression de fermeture
F02M 63/00 - Autres appareils d'injection ayant des caractéristiques particulières non couvertes dans les groupes ou Détails, parties constitutives ou accessoires non couverts dans les groupes ou ou présentant un intérêt autre que celui visé par ces groupes
The invention relates to an injection device for injecting high-pressure fuel into the combustion chamber of an internal combustion engine, the device comprising an injection valve assigned to a discrete reservoir chamber. A non-return valve operates between the chamber and the high-pressure supply line and the filter, which is preferably designed as an edge filter, forms a stop for limiting the opening motion of the valve member that is preferably designed as a valve member plate.
The recess (62) in the cylinder head (12) of the high-pressure delivery pump comprises a conical section (72) or (84) on the fuel intake side and the fuel outlet side. On the fuel intake side, an intake valve arrangement (78) is inserted into the recess (62), the intake valve insert (106) of said arrangement being provided with an outer cone (110) interacting with the conical section (72). Accordingly, on the fuel outlet side the outlet valve arrangement (90) inserted into the recess (62) comprises an outlet valve insert (148), which is likewise provided with an outer cone (110). The seat of the intake valve and the seat of the outlet valve are configured on the intake valve arrangement (78) or the outlet valve arrangement (90). Even at very high operating pressures, the load on the cylinder head is kept low, thereby ensuring a long service life.
F02M 63/02 - Appareils d'injection de combustible comportant plusieurs injecteurs alimentés par un élément de pompage commun ou ayant plusieurs éléments de pompage alimentant un injecteur communAppareils d'injection de combustible comportant la mise hors circuit des pompes, des éléments de pompe ou injecteursAppareils d'injection de combustible avec possibilités de connecter de façon variable et alternativement les éléments de pompage et les injecteurs
F02M 59/36 - Variation du débit du combustible en quantité ou dans le temps par des clapets réglant à des instants variables et bien déterminés les ouvertures de combustible
The invention relates to an injection device for injecting high-pressure fuel into the combustion chamber of an internal combustion engine, said device comprising an injection valve assigned to a discrete reservoir chamber (68). A non-return valve (74) operates between said chamber and the high-pressure supply line (44) and the filter (72), which is preferably designed as an edge filter (72'), forms a stop (106) for limiting the opening motion of the valve member (100) that is preferably designed as a valve member plate (100' ).
F02M 55/02 - Conduits entre pompes d'injection et injecteurs
F02M 61/16 - Détails non couverts dans les groupes ou présentant un intérêt autre que celui visé par ces groupes
F02M 63/02 - Appareils d'injection de combustible comportant plusieurs injecteurs alimentés par un élément de pompage commun ou ayant plusieurs éléments de pompage alimentant un injecteur communAppareils d'injection de combustible comportant la mise hors circuit des pompes, des éléments de pompe ou injecteursAppareils d'injection de combustible avec possibilités de connecter de façon variable et alternativement les éléments de pompage et les injecteurs
F02M 55/00 - Appareils d'injection caractérisés par leurs conduits de combustible ou évents
19.
Fuel injection valve for internal combustion engines
a) of the first intermediate plate (12). A second intermediate plate (14) is situated between the first intermediate plate (12) and a housing body (10), and has a valve space (70) which is hydraulically connected to the end side of a shank (58) of the mushroom-shaped intermediate valve member (56).
B05B 1/30 - Buses, têtes de pulvérisation ou autres dispositifs de sortie, avec ou sans dispositifs auxiliaires tels que valves, moyens de chauffage agencés pour commander un débit, p. ex. à l'aide de conduits de section réglable
20.
Accumulator injection system for an internal combustion engine
Disclosed is a high-pressure accumulator injection system (10) for an internal combustion engine, preferably a diesel engine. Said injection system (10) comprises a number of injection valves (18) which are connected to a high-pressure conveying device (12) via fuel pipes (16, 14). A reservoir (22) and a check valve encompassing a bypass throttle (24) that is connected in parallel are assigned to each injection valve (18). Said check valve which is assigned to each injection valve (18) and encompasses a bypass throttle (24) that is connected in parallel allows the accumulator injection system (10) to perform stable and reproducible injection processes with a favorable pressure curve during each injection process even when the discrete reservoirs (22) are provided with an unusually low volume. The reservoirs (22) can be integrated in the housing of the injection valves (18). The inventive injection system dispenses with the need for a complex common rail.
Disclosed is a fuel injection valve (4) comprising a control member (70) that is provided with a control passageway (114) which is arranged eccentrically relative to the housing axis (8) and can be opened and closed by a closure piece (96) with the aid of an actuator assembly (26) in order to obtain intermittent injections. The control member (70) is positioned by means of a centering pin (124) in order to define the circumferential position of the eccentric control passageway (114). The centering pin (124) is guided within a pocket bore of the control member (70) as well as within a bore of an intermediate plate (12), a cylindrical element (13), or a spacing sleeve (202). The actuator assembly (26) is designed as an electromagnetic actuator (80) in which the stop (98; 99) for limiting the lift of the pilot valve member is designed as a monolithic component of the intermediate plate (12) or as a flat stop disk (97) in a separate workpiece. The eccentric position of the actuator assembly (26) and the design of the stop (98; 99) allow for a very compact design of the fuel injection valve. The compact design makes it possible to mount a suitable storage chamber in the monolithic housing body (10) of the fuel injection valve, above the high-pressure inlet bore (20).
F02M 47/02 - Appareils d'injection à fonctionnement périodique avec clapets d'injection actionnés par la pression du fluide du type accumulateurs-injecteurs, c.-à-d. dans lesquels la pression du combustible dans l'accumulateur tend à ouvrir et la pression du combustible dans une autre chambre tend à fermer les clapets d'injection et comportant des moyens pour supprimer périodiquement cette pression de fermeture
A control device (52) of a fuel injection valve has a mushroom-shaped intermediate valve member (56) which is guided with a sliding fit (58') in a first intermediate plate (12). An injection valve member (28), which has a control piston (28'), for opening and closing injection openings in order to realize intermittent injection processes defines a control space (54) together with a guide sleeve (36) and the lower face (12a) of the first intermediate plate (12). A second intermediate plate (14) is situated between the first intermediate plate (12) and a housing body (10), and has a valve space (70) which is hydraulically connected to the end side of a shank (58) of the mushroom-shaped intermediate valve member (56).
F02M 47/02 - Appareils d'injection à fonctionnement périodique avec clapets d'injection actionnés par la pression du fluide du type accumulateurs-injecteurs, c.-à-d. dans lesquels la pression du combustible dans l'accumulateur tend à ouvrir et la pression du combustible dans une autre chambre tend à fermer les clapets d'injection et comportant des moyens pour supprimer périodiquement cette pression de fermeture
F02M 55/00 - Appareils d'injection caractérisés par leurs conduits de combustible ou évents
F02M 63/00 - Autres appareils d'injection ayant des caractéristiques particulières non couvertes dans les groupes ou Détails, parties constitutives ou accessoires non couverts dans les groupes ou ou présentant un intérêt autre que celui visé par ces groupes
brevets
