汽车发动机的功率和油耗,与气缸充气效率和可燃混合气雾化状况关系甚大。目前,汽油发动机一般均采用自然吸气进气方式,即利用发动机活塞下行时产生的真空吸力,把经过空气滤清器过滤后的空气吸入化油器,经与汽油混合、雾化后再进入气缸。这种依靠发动机真空吸力而进入的气流,经过空气滤清器、阻风门、化油器喉管、节气门、进气管及气门锥面间隙等许多弯道、狭口,流动阻力很大。如果采取一定装置,用以加速空气流通,改善可燃混合气的配比、雾化以及发动机的充气效率,将能在同等条 Car engine power and fuel consumption, and the cylinder charge efficiency and combustible gas mixture has a great relationship. At present, the gasoline engines are generally used aspirated naturally aspirated, that is, the use of the engine piston down vacuum suction, the air filtered through the air filter into the carburetor, after mixing with gasoline, atomized before entering cylinder. This relies on the engine vacuum suction into the air flow, through the air filter, choke, carburetor throat, throttle, intake manifold and valve cone clearance and many corners, throat, flow resistance. If you take certain devices to speed up the flow of air to improve the ratio of combustible mixture, atomization and engine charging efficiency, will be in the same article