从德国进口的中依发H3A汽车,装用四行程四缸柴油发动机,该发动机在修理后,容易出现一种异响故障。这种异响,不论声音的大小,都带有很大成分的空音儿,所以我们称这种异响故障为“空响”故障。这种“空响”故障在发动机上,听声音象近似敲击性的空响,轻者与敲腰鼓声相似,重 H3A cars imported from Germany by the hair, equipped with four-stroke four-cylinder diesel engine, the engine repair, prone to an abnormal sound fault. This type of noise, regardless of the size of the sound, has a very large component of the empty sound, so we call this abnormal noise fault “empty ring” fault. This “empty ring” fault on the engine, listening to the sound like the impact of the percussion of the empty ring, the lighter and knocking drum sound similar to heavy