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1. (WO2018060348) ENSEMBLE D'INJECTION DE COMBUSTIBLE DESTINÉ À UN MOTEUR À COMBUSTION INTERNE
Note: Texte fondé sur des processus automatiques de reconnaissance optique de caractères. Seule la version PDF a une valeur juridique

CLAIMS

A fuel injection assembly having a longitudinal axis (L) and comprising

- an elongate fuel injector (2) having a fuel inlet port and a fuel outlet port,

- an injector cup (4),

- a holding element (12) for securing the fuel injector (2) to the injector cup (4), and

- a spring clip (18)

wherein

- the injector cup (4) comprises a generally cylindrical body extending along the axis L and having an upper and a lower end, the cup (4) having a cavity at its lower end adapted to receive a fuel inlet port of the fuel injector (2) ,

- a first opening or openings are formed in the peripheral wall of the injector cup for receiving the holding element (12) ,

- the holding element (12) is generally U-shaped having two generally parallel arms (14) shaped and positioned to engage opposite lateral sides of an annular groove in the fuel injector (2) to secure the fuel injector (2) in the injector cup (4),

- when inserted in the injector cup (4), the free ends of the two arms (14) of the holding element (12) project from the injector cup (4), and have adjacent the free ends a retention arrangement (16) engageable by the spring clip (18) ,

- the spring clip (18) has at least one depending leg (32) engageable in a corresponding receiving part (10) on the fuel injector (2) to accurately locate the angular position the fuel injector (2) relative to the injector cup (4) .

A fuel injection assembly according to claim 1, wherein the retention arrangement (18) on the holding element comprises inwardly directed detents (16) adjacent to the ends of the two arms (14) of the holding element (12), the spring clip (18) having a spring element (28) engageable in the inwardly directed detents (16).

A fuel injection assembly according to claim 2, wherein the spring clip (18) comprises a one-piece body incorporating the spring element (28) and is securable to the injector cup.

A fuel injection assembly according to claim 3, wherein the spring clip (18) is securable to the injector cup (2) by brazing or welding and has at least one locating section (22) having therein at least one inspection opening (26) to enable the quality of the brazing/welding of the clip 18 to the injector cup 2 to be inspected.

A fuel injection assembly according to claim 4, wherein the spring clip (18) includes two locating sections (22, 24) spaced in the longitudinal axial direction and each locating section has two inspection openings (26) .

A fuel injection assembly according to claim 3, 4 or 5 wherein the locating sections (22, 24) are curved, having a radius of curvature to match that of the exterior wall of the injector cup (4) .

A fuel injection assembly according to any one of the preceding claims, wherein the spring clip (18) has two depending legs (32) in spaced parallel relationship, the legs (32) engaging on either side of an indexing tab (33) on the fuel injector body thereby to accurately locate the angular position of the fuel injector (2) relative to the inj ector cup ( 4 ) .

8. A fuel injection assembly according to any one of the preceding claims, wherein each leg is engageable in a corresponding receiving part (10) on the fuel injector (2) , the receiving part or parts (10) comprise recesses in the fuel injector (2) .

9. A fuel injection assembly according to claim 8, wherein the recesses are formed in a plastics component part of the fuel inj ector (2 ) .

10. A fuel injection assembly according to any one of the preceding claims, wherein the spring element (18) is formed by opposing cantilevered leaf sections (30) having an arcuate profile.

11. A fuel injection assembly according to any one of the preceding claims 1 to 9, wherein the spring element is formed by opposing cantilevered leaf sections (34) which are substantially straight.