It USES a fast actuated nozzle to follow the exhaust pulse, reducing the turbine inlet area periodically to increase exhaust-gas pressure.
2
进气系统主要包括空气滤清器、进气道、化油器和进气歧管。一些发动机在进气系统中有增压器。
The intake system mainly includes the air filter, intake ducting, the carburetor, and the intake manifold. Some engines have supercharger in the in take system.