Internal-combustion engine has hollow cam shaft mounted in cylinder head for driving inlet valve or outlet valve through valve gear

摘要

The internal-combustion engine (1) has a hollow cam shaft (3) mounted in a cylinder head (2) for driving inlet valve or outlet valve through a valve gear. The cam shaft has a radial bore (6), which is arranged such that the oil (8,11) is transferred at the valve gear for lubrication during the operation of the internal-combustion engine. An oil mist separator (9) is provided in the cam shaft.