Patent ID: 7415951

Claim:
A valve timing mechanism of an internal combustion engine of a motor vehicle, having a camshaft having at least one cam, via which a switchable valve timing mechanism element can be loaded with a cam stroke (s), in which locking means are arranged on the valve timing mechanism element, which locking means have a locking play which is active in the direction of a valve stroke, in which the cam has a base circle region (α) and a ramp region with an opening ramp (γ) which adjoins the base circle region (α), and in which at least one locking play ramp section is formed on the opening ramp (γ) to compensate for the locking play, wherein the cam is shaped in the locking play ramp section in such a way that, during a run-off movement over a cam counterelement of the valve timing mechanism element, in the event of a rotation of the camshaft, it runs off with an increased cam velocity (v) in comparison with adjacent ramp sections, at least in one part of the locking play ramp section.