The design of the mechanism for changing the valve timing

The actuator for changing the valve timing consists of a housing combined with a camshaft sprocket, a cover, a rotor combined with a camshaft and a pin that determines the relative position of the rotor and housing when the engine is stopped. In addition, the rotor has a seal that isolates the advance section and the section of the delayed opening or closing of the valves. The cover and rotor of the variable valve timing actuator have grooves that are used for proper alignment when inspecting the variable valve timing actuator (pic. 2.36).