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通过改变喷油泵出油阀间隙、出油阀紧帽腔容积、以及出油阀减压凸缘厚度，借助特制的透明供油系统、ＣＣＤ摄录机、高速Ａ／Ｄ采集卡、图像采集卡和微型计算机等测试及处理设备，对喷油系统中汽泡现象进行了试验研究，揭示出以上几项与供油系统中残余压力的关系及对出油阀紧帽腔中汽泡和汽泡分布区域的影响规律。
By changing the injection pump valve clearance, the output valve cap cap cavity volume, and the pressure relief valve lip thickness, with a special transparent oil supply system, CCD camcorder, high-speed A / D acquisition card, image acquisition card And micro-computer testing and processing equipment, the bubble phenomenon in the fuel injection system has been studied, revealing the above several with the residual pressure in the oil supply system and the relationship between the valve and the valve cap cavity bubble and bubble Distribution of the impact of the law.