Coupling assembly for coupling a camshaft-driven unit pump to a camshaft

摘要

A coupling assembly for coupling a camshaft-driven unit pump to a camshaft comprising a first gear 8 rotationally fixedly connected to a camshaft 3 and a second gear 9 configured to mesh with the first gear and comprising an integrated conversion mechanism 10 operatively coupled to a piston 5 of a unit pump 2 to convert rotation of the second gear into a stroke movement of the piston. The integrated conversion mechanism preferably comprises a disk 16 with lobes 17 circumferentially protruding therefrom. The disk and the second gear may be spaced apart from each other. Preferably the disk is operatively coupled to a follower 13 of the piston. The unit pump is preferably a fuel injection pump. Also claimed is a vehicle comprising the assembly. The invention allows the pump to be mounted in a number of different locations with respect to an engine, as opposed to conventional camshaft lobe driven pumps which are restricted to being directly coupled to the camshaft.