Abstract: Various embodiments of the teachings here include a fixing bracket for fixing a tie wrap at a fuel rail for mounting a wiring harness at the fuel rail, the fixing bracket comprising: a one-piece bracket body extending along a longitudinal direction, the bracket body including a first longitudinal end section, a second longitudinal end section, and an intermediate section. The intermediate section is disposed between the first end section and the second end section. The intermediate section comprises a protrusion including two bows spaced apart from one other by a slot disposed between the bows.

Abstract: Various embodiments include a fuel injection assembly comprising: a fuel injector; an injector cup comprising a cylindrical body with a cavity at the lower end to receive a fuel inlet port of the injector; a holding element for securing the injector to the cup; a spring clip; and a first opening formed in a peripheral wall of the cup for receiving the holding element. The holding element comprises a U-shaped body with two parallel arms engaging opposite sides of an annular groove in the injector to secure the injector in the cup. When inserted in the cup, the free ends of the two arms project from the cup, and include adjacent the free ends a retention arrangement engageable by the spring clip. The spring clip comprises a depending leg engageable in a corresponding receiving part on the injector to locate the angular position of the injector relative to the cup.

Abstract: Various embodiments include a fuel injection assembly comprising: a fuel injector; an injector cup comprising a cylindrical body with a cavity at the lower end to receive a fuel inlet port of the injector; a holding element for securing the injector to the cup; a spring clip; and a first opening formed in a peripheral wall of the cup for receiving the holding element. The holding element comprises a U-shaped body with two parallel arms engaging opposite sides of an annular groove in the injector to secure the injector in the cup. When inserted in the cup, the free ends of the two arms project from the cup, and include adjacent the free ends a retention arrangement engageable by the spring clip. The spring clip comprises a depending leg engageable in a corresponding receiving part on the injector to locate the angular position of the injector relative to the cup.

Abstract: Various embodiments of the teachings here include a fixing bracket for fixing a tie wrap at a fuel rail for mounting a wiring harness at the fuel rail, the fixing bracket comprising: a one-piece bracket body extending along a longitudinal direction, the bracket body including a first longitudinal end section, a second longitudinal end section, and an intermediate section. The intermediate section is disposed between the first end section and the second end section. The intermediate section comprises a protrusion including two bows spaced apart from one other by a slot disposed between the bows.

Abstract: Various embodiments include a holding component for securing a fuel injector to an injector cup comprising: a U-shaped holding element with two parallel supporting arms for engaging opposite sides of an annular groove in the fuel injector to secure the fuel injector in the injector cup; a base part; two resilient arms extending from the base part for engaging the outer surface of the injector cup; and a depending leg engageable in a corresponding receiving part on the fuel injector to accurately position the fuel injector angularly relative to the injector cup.

Abstract: Various embodiments may include a fuel injector cup assembly comprising: a fuel injector cup; a fastening bracket for securing a fuel injector to the cup; and a clamping arm for fastening the cup to an engine. The cup has a main body part with an internal volume. The cup comprises a one-piece body defining the main body part and an inlet stub containing a fuel inlet port hydraulically connectable to the fuel source. The stub has a first external dimension. The main body part has a second external dimension larger than the first external dimension to provide a shoulder supporting the clamping arm. An end of the cup remote from the stub has an outwardly extending flange supporting the fastening bracket.

Abstract: A fuel injection assembly for an internal combustion engine has a fuel injector, an injector cup and a holding element for securing the fuel injector in the injector cup, wherein the fuel injector has an annular groove defined in part by an annular flange having a profiled peripheral surface engageable by a profiled surface on the arms of a holding element when the fuel injector is secured to the injector cup, to provide a line or point contact between the fuel injector and the holding element.

Abstract: Various embodiments include a holding component for securing a fuel injector to an injector cup comprising: a U-shaped holding element with two parallel supporting arms for engaging opposite sides of an annular groove in the fuel injector to secure the fuel injector in the injector cup; a base part; two resilient arms extending from the base part for engaging the outer surface of the injector cup; and a depending leg engageable in a corresponding receiving part on the fuel injector to accurately position the fuel injector angularly relative to the injector cup.

Abstract: A fuel delivery assembly for an internal combustion engine, including an injector cup, a fuel injector received therein, and a spring clip is disclosed. The injector cup has a circumferential wall with an external shoulder. The fuel injector has a shoulder which is axially spaced apart from the injector cup. The spring clip has a base portion with two radially compliant webs bearing against the shoulder of the circumferential wall and being in force-fit engagement with the circumferential wall. The spring clip has an axially compliant portion bearing against the shoulder of the fuel injector and being elastically deformable to bias the fuel injector in axial direction from the upper end towards the lower end.

Abstract: Various teachings of the present disclosure may be embodied in a fuel rail assembly for a combustion engine comprising: an elongated tubular fuel rail; a fuel delivery pipe unit hydraulically coupled to the fuel rail; an injector cup for receiving a fuel injector, a pipe coupled to the cup and to the rail, and at least one fixation unit for fixing the pipe unit to the engine. The fixation unit comprises a connecting element fixed to a predetermined pipe unit portion by a first filler material joint. The connecting element, absent the first filler material joint, is axially and rotatably movable relative to the pipe and the injector cup. The fixation unit includes a bracket element with a through hole for a bolt to the engine. The bracket element is fixed to a predetermined connecting element portion by a second filler material joint.

Abstract: 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.

Abstract: 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.

Abstract: A fuel injection assembly for an internal combustion engine has a fuel injector, an injector cup and a holding element for securing the fuel injector in the injector cup, wherein the fuel injector has an annular groove defined in part by an annular flange having a profiled peripheral surface engageable by a profiled surface on the arms of a holding element when the fuel injector is secured to the injector cup, to provide a line or point contact between the fuel injector and the holding element.

Abstract: A fuel delivery assembly for an internal combustion engine, including an injector cup, a fuel injector received therein, and a spring clip is disclosed. The injector cup has a circumferential wall with an external shoulder. The fuel injector has a shoulder which is axially spaced apart from the injector cup. The spring clip has a base portion with two radially compliant webs bearing against the shoulder of the circumferential wall and being in force-fit engagement with the circumferential wall. The spring clip has an axially compliant portion bearing against the shoulder of the fuel injector and being elastically deformable to bias the fuel injector in axial direction from the upper end towards the lower end.

Abstract: 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.

Abstract: A fuel rail assembly is disclosed. The fuel rail assembly includes an elongated tubular fuel rail and a plurality of fuel delivery lines for hydraulically coupling the fuel rail to fuel injectors. Each fuel delivery line has an injector cup, a pipe being arranged between the fuel rail and the injector cup, and a fixation bracket. A rigid connection is established between the fixation bracket and a portion of the pipe, the portion being spaced apart from each of the fuel rail and from the injector cup. The injector cup, the pipe, and the fixation bracket are individual parts. The fixation bracket is spaced apart from the injector cup and from the fuel rail.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: A fastening assembly for mounting a fuel rail in an engine includes a bracket which includes a longitudinal axis and is coupled to the fuel rail, a retainer which includes a first through opening for receiving a bolt, and a bolt which is inserted through the first through opening. The bracket includes a second through opening for receiving the retainer and the bolt. The retainer is arranged in the second through opening such that it can rotate relative to the bracket. The cross-section of the first through opening perpendicular to the longitudinal axis has an elongated shape.