Valve drive for internal combustion engine, with pushrod head made spherical on side facing camshaft

摘要

The valve drive has a cup pushrod consisting of a head (2) and a skirt (3) between a control cam (4) on the camshaft (5) and the gas exchange valve, running in a receiving boring (7) in the cylinder head (8). The head is made spherical on its side facing the camshaft, so that the action of the force (F) normal to the camshaft centers the pushrod and stops it turning.