Valve train for internal combustion piston engine, has variable sliding surface of cam, which changes opening duration of intake valve, whereby fresh charge volume of cylinder is controlled

摘要

Valve train has the variable sliding surface of a cam (2), which changes the opening duration of an intake valve, whereby a fresh charge volume of a cylinder is controlled. A compression opening in a cylinder is adjusted by a selective axial shift of a cam relative to a valve according to the operating load.