论文部分内容阅读
例一:车型:2013年Cayenne S。故障现象:车辆行驶时,从发动机舱传出“嗒嗒”的异响,类似敲缸声,当热车和低速上坡时尤其明显,怠速时,故障不出现。故障诊断:(1)使用内窥镜检查燃烧室,发现并没有太多的积炭,进气门背面也几乎没有积炭。(2)进行汽缸压力测试正常、汽缸泄漏测试正常。(3)无任何故障码,无当前缺火记录,实际值Z010 RON相关点火图谱
Example 1: Model: Cayenne S. Symptom: When the vehicle is running, the sound from the engine compartment comes out “rattling”, which is similar to the knocking noise, especially when the hot car and the low speed uphill are noticed. At idle, the fault does not appear. Fault diagnosis: (1) the use of endoscopy combustion chamber, found that there is not much coke, the back of the intake valve almost no carbon deposition. (2) The cylinder pressure test is normal, the cylinder leak test is normal. (3) No fault code, no current fire record, actual value Z010 RON Related Ignition Map