Patent ID: 9103308
Filing Date: 2015-08-11
Classification: F02M

Abstract:
1. A coupling device for mechanically coupling a fuel rail to a cylinder head of a combustion engine, the coupling device comprising a fuel injector cup configured 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 opposing the first surface and configured to face the cylinder head, a fastening element configured to be fixedly coupled to the cylinder head, the fastening element comprising a head portion and a shank portion, the head portion facing the first surface of the fuel injector cup, the shank portion being partially arranged in the through hole and configured for engagement with the cylinder head, a first spring element arranged axially between the head portion and the first surface of the fuel injector cup, 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, and a bushing arranged axially between the second spring element and the cylinder head, wherein the bushing is coupled to or in contact with the second spring element such that the bushing is configured to transfer a force from the second spring element to the cylinder head.