Continental Automotive Gmbh

Vitesco Technologies Gmbh

Cpt Group Gmbh

Gisella Di Domizio

Giandomenico Serra

Daniel Marc

Marco Mechi

Edoardo Giorgetti

Andrea Puccini

Marco Pasquali

Matteo Soriani

Massimo Latini

Giandomencio Serra

Massimo Giovannetti

Georg Weigl

Ivo Lorenz

Francesco Mennella

Various embodiments include an injector cup comprising: a cup body extending along a central longitudinal axis from a first axial end to a second axial end; a ring adjoining a border of the second axial end and radially extending beyond said border; wherein a base surface of the ring faces away from the first axial end and defines a reference plane extending orthogonally to the longitudinal axis; the ring comprises two wings, wherein each wing includes a free end section extending bent away from the reference plane at a side of the reference plane facing towards the cup body, wherein the two wings are spaced from each other; and a through opening in the ring disposed between the two wings.

Injector cup, spring clip, and fluid injection assembly

Various embodiments include a fuel rail assembly for an internal combustion engine comprising: an elongate, common fuel rail having a reservoir for a fuel supply; a plurality of adapters spaced along and fixed to a wall of the fuel rail for hydraulically connecting a respective fuel injector to the reservoir in the common rail; and a respective fuel passage associated with each adapter of the plurality of adapters, each fuel passage directing fuel from the reservoir to the associated adapter. Each fuel passage comprises an inlet end open to the reservoir and an upstream end section adjacent to the inlet end having a length and a cross-sectional area forming a smoothing function to smooth pressure fluctuations in the fuel entering the respective passage.

Fuel rail assembly

The present disclosure relates in general to injectors and, more specifically, to a fuel injection assembly that may be used in an internal combustion engine. In some embodiments, a fuel injection assembly may include: a fuel injector with a fuel inlet port and a fuel outlet end; and an injector cup with a recess receiving the fuel inlet port of the fuel injector through an opening of the recess. The injector cup comprises a collar extending circumferentially around the opening. The injector cup comprises a tab extending longitudinally beyond the opening in a direction towards the fuel outlet end. The tab projects axially beyond the collar in a longitudinal direction towards the fuel outlet end. The fuel injector comprises a pocket receiving the tab.

Fuel injection assembly

A coupling device is provided for hydraulically and mechanically coupling a fuel injector to a fuel rail of a combustion engine, the coupling device including a fuel injector cup configured to be coupled to the fuel rail and to engage a fuel inlet portion of the fuel injector, the fuel injector cup including a first part including a recess and a second part configured to be received in the recess of the first part and configured to engage the fuel inlet portion of the fuel injector.

Coupling device

The coupling device comprises a holding fixture being designed to be mechanically coupled to the fuel rail and comprising a through hole extending between a first surface and a second surface, the second surface opposing the first surface and being arranged and designed to face the cylinder head. Furthermore the coupling device comprises a fastening element being designed to be fixedly coupled to the cylinder head. The fastening element comprises a head portion and a shank portion. The head portion faces the first surface of the holding fixture and the shank portion is being partially arranged in the through hole and is designed to be in engagement with the cylinder head. In addition the coupling device comprises a retaining element being arranged inside the through hole, being coupled with the holding fixture, comprising in a given latch area a cross-section restriction and being in engagement with the shank portion at least in this latch area. The retaining element is formed as a one-piece unit.

A fuel rail assembly for an internal combustion engine is disclosed. It includes a main gallery and a plurality of fuel delivery outlets. Each fuel delivery outlet has an injector cup and an injector cup mounting connection arranged between the main gallery and the injector cup. A fixing bracket is adapted to fasten the main gallery to the engine. The fixing bracket is spaced apart from the injector cup and secured to the main gallery. A fastening element is provided to secure the fixing bracket to the engine. A rigid connection member is coupled to the fixing bracket extends between the fixing bracket and one of the injector cup and the injector cup mounting connection.

Fuel rail assembly for an internal combustion engine

A coupling device for coupling a fuel rail to a cylinder head of a combustion engine may include: a fuel injector cup coupled to the fuel rail and facing the cylinder head, a first fastening element facing the fuel injector cup and fixedly coupled to the cylinder head, at least one first spring element arranged between the first fastening element and the fuel injector cup and/or between the fuel injector cup and the cylinder head, a support element arranged between the fuel rail and the cylinder head and fixedly coupled to the fuel rail, a second fastening element engaged with the support element and fixedly coupled to the cylinder head, and at least one second spring element arranged between the second fastening element and the support element and/or between the support element and the cylinder head. The first spring element(s) may comprise metal, and the second spring element(s) may comprise plastic.

A fuel rail assembly for an internal combustion engine is disclosed. It comprises a plurality of fuel delivery lines branching off from a fuel rail, each fuel delivery line hydraulically coupling one fuel injector to an outlet port of the fuel rail. Each fuel delivery line has a one-piece pipe which extends from an outlet port of the fuel rail to the respective fuel injector. The pipe has a cylindrical connection section adjoining the respective outlet port and a cylindrical injector cup section in which a fuel inlet portion of the respective fuel injector is received. The connection section and the injector cup section have different hydraulic diameters.

The present disclosure relates to a fuel rail assembly for an internal combustion engine. In some embodiments, a fuel rail assembly for an internal combustion engine may include an elongated tubular fuel rail and a plurality of fuel delivery lines branching off from the fuel rail for hydraulically coupling the fuel rail to fuel injectors operable to inject fuel into the combustion engine. Also, an injector cup for receiving a fuel inlet portion of a respective one of the fuel injectors, a pipe arranged between the fuel rail and the injector cup for hydraulically coupling the injector cup to the fuel rail, and a fixation bracket configured for positionally fixing the fuel delivery line with respect to the engine. The injector cup, the pipe, and the fixation bracket are individual parts. A rigid connection is established between the fixation bracket and a portion of the pipe, said portion spaced apart from each of the fuel rail and from the injector cup. The fixation bracket is a one-pieced part which adjoins the pipe and is spaced apart from the injector cup and the fuel rail.

A fluid injection assembly for a combustion engine may comprise a spring clip arranged between an injector body and an injector cup. The spring clip may include a ground plate and at least one spring element fixedly coupled with the ground plate. The spring element has a contact region with the injector cup and the ground plate has a contact region with the injector body, so that a spring force is exerted by the spring clip on the injector body. The injector body and the injector cup are coupled together by two holding elements, each of the holding elements extending in the direction of the longitudinal axis and engaging behind a fixation element.

Fluid injection assembly for a combustion engine

A fuel injector assembly with a fuel injector and a coupling device is disclosed. The coupling device includes a fuel injector cup, a plate element, one or more screws and a wing clip. The plate element includes at least one through-hole for fixedly coupling the fuel injector cup with the plate element by the screw or screws respectively, so that the fuel injector cup, the plate element and the screw(s) are positionally fixed with respect to each other. The wing clip is arranged at least partly around the fuel injector and extends outward in a radial direction such that the screw or screws, respectively, are operable to block a movement of the fuel injector relative to the plate element in a first direction of the central longitudinal axis by mechanical interaction with the wing clip.

Fluid injection assembly

A coupling device is provided for hydraulically and mechanically coupling a fuel injector to a fuel rail of a combustion engine. The coupling device comprises a fuel injector cup hydraulically coupled to the fuel rail and configured to engage a fuel inlet portion of the fuel injector, a plate element coupled to the fuel injector and fixedly coupled to the fuel injector cup to retain the fuel injector in the fuel injector cup in direction of a central longitudinal axis of the fuel injector, wherein the plate element comprises a groove, and a snap ring arranged in the groove and designed to fixedly couple the plate element to the fuel injector. The plate element comprises a main body and a ring element. The ring element comprises the groove and is at least limited rotatable around the central longitudinal axis relative to the main body of the plate element.

Fuel injector coupling device

A coupling device for mechanically coupling a fuel rail to a cylinder head of a combustion engine comprises a fuel injector cup designed to be hydraulically and mechanically coupled to the fuel rail and comprising a through hole extending between a first surface and a second surface of the fuel injector cup, the second surface arranged to face the cylinder head, and a fastening element designed to be fixedly coupled to the cylinder head, the fastening element comprising a head portion facing the first surface of the fuel injector cup and a shank portion partially arranged in the through hole and designed to be in engagement with the cylinder head. The coupling device comprises a first spring element arranged axially between the head portion and the first surface of the fuel injector cup, and a second spring element facing the second surface of the fuel injector cup and arrangeable axially between the second surface of the fuel injector cup and the cylinder head.

A fuel injector assembly has a fuel injector and a coupling device for hydraulically and mechanically coupling a fuel injector to a fuel rail of a combustion engine. The coupling device includes a fuel injector cup configured to be hydraulically coupled to the fuel rail and to engage a fuel inlet portion of the fuel injector, a plate element fixedly coupled to the fuel injector cup and comprising a groove, and a snap ring arranged in the groove and configured to fixedly couple the plate element to the fuel injector to retain the fuel injector in the fuel injector cup in direction of a central longitudinal axis of the fuel injector and to prevent a movement of the fuel injector relative to the plate element in a first direction of the central longitudinal axis. A circlip arranged axially between the fuel injector and the plate element prevents a movement of the fuel injector relative to the plate element in a second, opposite direction of the central longitudinal axis.

Fuel injector assembly

A coupling device for hydraulically and mechanically coupling an injection valve to a fuel rail of a combustion engine has a fuel injector cup with a central longitudinal axis, is hydraulically coupled to the fuel rail and in engagement with the injection valve. A first retaining element is fixedly coupled to the fuel injector cup, a second retaining element is fixedly coupled to the injection valve, the second retaining element being coupled to the first retaining element to prevent a movement of the second retaining element relative to the first retaining element in a first direction of the central longitudinal axis to retain the injection valve in the fuel injector cup, and an interface element which is operable to axially couple the injection valve with the second retaining element in a fixed way. Fuel injection arrangement with a coupling device and an injection valve which is coupled to the coupling device.

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San Giuliano Terme, Italy

Gisella Di Domizio