On the power stroke, the intake valve and exhaustvalveclose. The spark plug ignites the air-fuel mixture, the piston moves down.
在作功行程,进气门和排气门关闭,火花塞点燃混合气,活塞向下移动。
2
On the compression stroke, the piston moves up. The intake valve and exhaustvalveclose. The piston compresses the air-fuel mixture.
在压缩行程,活塞向上运动,进气门和排气门关闭,活塞压缩混合气。
3
General installed in the valve cylinder and the cylinder valve between the tube close to the road, so that the exhaust cylinder without a valve directly into to the cylinder for the purpose of rapid.