4-stroke internal combustion engine with applied ignition

摘要

4-stroke internal combustion engine with applied ignition with at least one cylinder with an assigned bowl-in (recessed-head) piston (10) and with overhead valves. In order to increase the knock resistance the face of the valve disc of at least one of the two valves is located only partially over the recess of the piston head, this valve disc in its closed position being set back in a depression (51) of the cylinder head as far as is necessary for the free movement of this valve (16; 20). <IMAGE>