Rotary valve internal combustion engine has spherical valve drive with variable timing and flap valves to control

摘要

The rotary valve internal combustion engine for a motor vehicle has a spherical valve (1a) with the intake and exhaust ports also controlled by flap valves (4,5). The rotary valve timing can be altered by varying the drive shaft (9) input, which may be by belt or chain. The valve size is matched to that of the cylinder.