| 摘要 |
<p>A four-stroke combustion engine, each cylinder of which having induction and exhaust valves driven by the engine crankshaft through mechanical transmissions organs, has induction and exhaust valves defined through the cylinder's wall. Each valve has a rotating disk shutter driven by the crankshaft of the motor through a mechanical transmission. Sealing in ensured by an elastic ring abutting against the face of the rotating disk.</p> |
