Patent ID: 7610886
Filing Date: 2009-11-03
Classification: F01L

Abstract:
1. Force transmitting device for a valve drive of an internal combustion engine with a hydraulic valve lash compensating device, with the force transmitting device having a hollow cylindrical compensating piston, which on one end defines a working chamber of the valve lash compensating device and on an other end encloses an internal hydraulic medium reservoir, which is used to supply the working chamber, which is connected to a hydraulic medium supply of the internal combustion engine, and which is protected from a return flow of hydraulic medium in a direction of the hydraulic medium supply by a valve plate that can be pressurized and that can move axially to prevent the return flow from the internal hydraulic medium reservoir to the hydraulic medium supply, the valve plate interacts in a sealing way with an axial annular surface of the compensating piston for a non-pressurized hydraulic medium supply, the valve plate has one or more openings, which connect the internal hydraulic medium reservoir to an external hydraulic medium reservoir for a non-pressurized hydraulic medium supply.