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现代汽车拖拉机用四冲程直接喷射式柴油机,大部分在结构上采取措施,使气缸中产生有组织的空气流动,从而改善混合气的形成。为了改善混合气形成,目前在汽车拖拉机用柴油机中,采用两种方法使气缸中产生有组织的空气流动。 1.在进气机构上采取措施,使空气在充气时产生旋转运动; 2.在半分开式燃烧室中,当压缩行程时,空气在活塞上部空间经活塞顶上的燃烧室产生挤压涡流。关于在进气机构上采取措施,使充气时产生有组织的空气流动,对高增压四冲程柴油机
Modern four-stroke direct injection diesel tractors with tractors, most of the structural measures to be taken to make the cylinder in the organized air flow, thereby improving the formation of the mixture. In order to improve the formation of the mixture, there are currently two methods of generating organized air flow in the cylinder in a diesel tractor engine. 1. In the intake mechanism to take measures to make air when inflated to produce rotary motion; 2. In the semi-split combustion chamber, when the compression stroke, the air in the upper piston space by the combustion chamber on the top of the piston squeeze vortex . On the intake mechanism to take measures to inflate the organized air flow, the high pressure four-stroke diesel engine