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1.前言柴油机在进气和压缩行程中,进入燃烧室内的空气形成了一定程度的进气涡流及挤压涡流等空气运动,从而使柴油机的性能受到很大的影响。因此,充分而有效地利用燃烧室内的空气流动,来促进燃料与空气的混合及燃烧则是非常重要的。燃料在燃烧室内的喷雾射程、喷雾角的大小以及油末冲撞到燃烧室壁面后的运动状态等,均根据喷油器的喷孔数及涡流的不同而发
1. Introduction Diesel engine in the intake and compression stroke, the air entering the combustion chamber to form a certain degree of intake vortex and squeeze vortex and other air movement, so that the performance of the diesel engine has been greatly affected. Therefore, it is very important to utilize the air flow in the combustion chamber sufficiently and effectively to promote the fuel-air mixture and combustion. The fuel spray range in the combustion chamber, the size of the spray angle and the motion state of the oil after impacting to the wall of the combustion chamber are all determined according to the number of injection holes of the injector and the eddy current