Continental Automotive Gmbh

Daniel Marc

Giandomenico Serra

Edoardo Giorgetti

Gisella Di Domizio

Enio Biasci

Andrea Puccini

Massimo Latini

Marco Mechi

Matteo Soriani

Marco Pasquali

Roberto Ricci

Davide Matteini

Tiziano Ghelardi

Giandomencio Serra

Rita Ventisette

Francesco Mennella

Christiano Mannucci

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.

Coupling device

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 a combustion engine includes a fuel rail, a plurality of fuel injector cups arranged and configured to face a cylinder head of a combustion engine and being hydraulically and mechanically coupled to the fuel rail directly or via pipe elements, and at least one support element configured to be fixedly coupled to the cylinder head. The at least one support element is fixedly coupled to two of the injector cups or to two of the pipe elements being coupled to the injector cups.

Fuel rail assembly

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 injection assembly for a combustion engine includes an injector body, an injector cupradially enclosing an axial end of the injector body, and a spring clip coupling the injector cup with the injector body. The spring clip includes a ground plate with a main extension plane perpendicular to a longitudinal axis of the fuel injection assembly, a recess extending inwards from a lateral end of the ground plate to a bottom part having a circle-segment contour extending through an angle between 270&#xb0; to 180&#xb0;, and at least one spring element fixed to the ground plate. The spring element of the spring clip has a contact region with the injector cup, and the ground plate has a contact region with the injector body, whereby the spring element exerts a spring force on the injector cup. The ground plate of the spring clip extends into a cutout of the injector cup.

Fuel injection assembly for a combustion engine

A coupling device for mechanically and hydraulically coupling a fuel injector to a fuel rail of a combustion engine is disclosed. The coupling device includes a fuel injector cup having a central longitudinal axis and extending from an inlet side for hydraulically coupling to the fuel rail and an outlet side for engaging a fuel inlet portion of the fuel injector, and a collar element coupled to the fuel injector cup. The collar element includes at least one leg portion having a bridge section and at least one branch section extending radially away from the fuel injector cup. The branch section(s) are arranged radially outwardly of the bridge section and project beyond the bridge section in both (b) a tangential direction perpendicular to the radial direction and perpendicular to the longitudinal axis and (b) a longitudinal direction parallel to the longitudinal axis.

Coupling device and fuel injector assembly

A fuel cup including a central longitudinal axis and being fixable to an injector via a holder comprises a fuel cup body and a fixing element. This fuel cup is wherein said fixing element is a stamped tab affixed to said fuel cup body, and in that said stamped tab is designed to be engaged to said holder.

Fuel cup

A fluid injection assembly for a combustion engine includes an injector body having a notch, an injector cup, which radially encloses an axial end of the injector body and has a projecting part, and a spring clip arranged between the injector body and the injector cup. The spring clip includes a ground plate, at least one spring element, and at least one holding element engaging behind the projecting part of the injector cup. The ground plate is arranged in the notch of the injector body. The injector body and the injector cup are coupled together by the spring clip by mechanical interaction via the projecting part and the notch, respectively.

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 Fastening element has a carrier. A first pair of prongs branches off a first side face of the carrier designed to be in a mechanical engagement with a protrusion of a injector cup. A second pair of prongs branches off a second side face of the carrier. The second pair of prongs is designed to retain a fluid injector and to couple mechanically to a first protrusion of the injector. A pair of pins branches off a respective prong from the second pair of prongs at a respective inner side face of the respective prong. The pins are arranged opposed to each other and in a given distance from each other and they are designed to be in a mechanical engagement with the fluid injector. A clamping device being designed to couple mechanically with the fluid injector cup and to exert a repelling force on the fluid injector cup.

Fastening element and fluid injector assembly

A coupling arrangement has a housing, a cylindrical supporting element having a center axis, which at least partly axially overlaps with the housing and contacts it at a first axial end area to disable movement at least in one direction along the center axis, the supporting element has at least a first protrusion, a connecting element with at least a second protrusion, which at least partly axially overlaps with the supporting element and which is arranged along the center axis facing away from the first axial end area, and a spring arranged and designed such that a first and a second axial end rest on the first protrusion and the second protrusion, respectively. The spring, the supporting element with its first protrusion and the connecting element second protrusion are designed and arranged such as to provide an axial force along the center axis at the first axial end area.

Coupling arrangement and connection assembly

A coupling arrangement () includes a housing (), at least one locking element () designed to at least partly surround the housing () forming a first area of contact () with the housing () via a positive locking or frictional connection to limit rotational movement of the housing (), and a connecting element (). The connecting element (), arranged at least partly circumferentially around the housing () and being cylindrical with a center axis (X), has at least one locking recess () designed to at least partly take in the respective locking element () to limit rotational movement of the connecting element () via positive locking. The housing (), the locking element () and the connecting element () are designed and arranged such as to limit movement of the housing () relative to the connecting element () at least in one direction of the center axis (X).

Coupling device for hydraulically and mechanically coupling a fuel injector to a combustion engine fuel rail, having a fuel injector cup with a central longitudinal axis hydraulically coupled to the rail and engaging a fuel inlet portion of the injector, a first ring element fixedly coupled to the cup, and a second ring element fixedly coupled to the injector. One of the ring elements has a collar arranged radially outside the other elements and extending from the one element in direction of the longitudinal axis. The collar has a recess facing the central longitudinal axis. A circlip is arranged in the recess and arranged and designed to form a positive fitting coupling between the first and second ring elements. The circlip prevents a movement of the first ring element relative to the second element retaining the fuel injector in the fuel injector cup in direction of the central longitudinal axis.

Growing community of inventors

Leghorn, Italy

Daniel Marc