Patent ID: 8056520
Filing Date: 2011-11-15
Classification: F01L

Abstract:
1. A valve drive of an internal combustion engine, comprising: a lifting disk valve which controls a gas exchange cycle of the internal combustion engine; a spring means which loads lifting disk valve when closed with a force against a valve seat; and a force profile of which is substantially independent of a stroke profile of the lifting disk valve, wherein the spring means is part of a latching apparatus which is arranged in a stationary manner in the internal combustion engine, encloses a valve stem of the lifting disk valve and has one or more latching bodies which are arranged in a force flow between the spring means and the lifting disk valve and can be displaced transversely with respect to the valve stem, the latching bodies being supported on a latching face of the valve stem when the lifting disk valve is closed and being supported on a latching face of the latching apparatus when the lifting disk valve is open, in each case, in the closed direction of the lifting disk valve.