Coupling device

摘要

Coupling device (60) for hydraulically and mechanically coupling an injection valve (20) to a fuel rail (14) of a combustion engine (11). The injection valve (20) comprises a valve body (21) and a fuel inlet tube (22) being partially arranged in the valve body (21). The coupling device (60) comprises a fuel injector cup (30) having a central longitudinal axis (L) and being designed to be hydraulically coupled to the fuel rail (14) and at least partially being in engagement with the fuel inlet tube (22), the fuel injector cup (30) comprising an inner bottom surface (45) facing the injection valve (20), a first retaining element (36) being fixedly coupled to the fuel injector cup (30), a second retaining element (38) being fixedly coupled to the injection valve (20), the second retaining element (38) being coupled to the first retaining element (36).