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供油时间过早与喷油器雾化不良产生的“敲缸”声,虽都属于工作粗暴,燃烧气体压力波冲击金属零件引起的,但它们的音响、音调随转速的变化各有不同。 供油时间过早引起的敲击声,发生在气缸上部,音量、音调均较喷雾化不良为低。响声均匀而有连续性,且随转速的升高而有所降低。利用断缸法检查,响声不会消失。 喷油嘴雾化不良发生的响声除发生在气
Although the oil supply time is too early and the sprayer atomization bad, “knocking cylinder” sound, all belong to the rough work, combustion gas pressure wave caused by the impact of metal parts, but their sound, pitch changes with speed vary. The rap sound caused by too early oil supply occurs in the upper part of the cylinder, and the volume and pitch are lower than that of the atomization. Uniform sound and continuity, and with the speed increased and decreased. Use broken cylinder test, the sound will not disappear. In addition to the nozzle atomization occurs sound in addition to the sound