Patent ID: 8875682

Claim:
A coupling device for hydraulically and mechanically coupling an injection valve to a fuel rail of a combustion engine comprising: a fuel injector cup having a central longitudinal axis and being designed to be hydraulically coupled to the fuel rail and being operable to be in engagement with the injection valve, a first retaining element being fixedly coupled to the fuel injector cup, a second retaining element being fixedly coupled to the injection valve, the second retaining element being screwed 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 being operable to axially couple the injection valve with the second retaining element in a fixed way, wherein the interface element has a tab extending in axial direction and the second retaining element has a recess, wherein the tab engages with the recess, and wherein the interface element comprises an electrical connector configured for an electrical supply of the injection valve.