In the meantime, if want to change the automobile exhaust system, should choose mute larynx, avoid by all means is choose ring.
同时，假如要改动汽车的排气系统，要选用静音喉，切忌选用响喉。
2
During deceleration, the particles suspended in the oil blow out the exhaust, rather than accumulating in the ring grooves between the piston and rings. This keeps the rings from wearing too much.
在减速时，油里面悬浮的颗粒排出排气筒，而不是积聚在活塞和环之间的沟槽内，这可以使环磨损减缓。
3
The bypass ports are cut into the cylinder just below the exhaust ports and the transfer channels are formed by a hollow between the steel cylinder and the aluminum spacer ring.