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故障现象一辆北方奔驰自卸车,搭载直列6缸、单缸4气门的上海日野P11C-UJ型发动机,采用博世电控高压共轨燃油喷射系统。该车累计行驶了1 1万km,突然出现发动机工作异响、冒白烟的故障。故障诊断故障出现后,驾驶人立即停车熄火,然后通知维修人员赶赴现场。经检查发现第3缸的排气门调整螺钉断裂(图1),气门锁片脱落,气门弹簧歪斜。将故障车辆拖回
Fault phenomenon A North Benz dump truck, equipped with inline 6-cylinder, single-cylinder 4-valve Shanghai Hino P11C-UJ-type engine, the use of Bosch electronic control high-pressure common rail fuel injection system. The car has traveled a total of 110,000 km, suddenly appeared abnormal work of the engine, take the white smoke fault. Fault diagnosis After the fault occurs, the driver immediately stops stalled, and then notify the maintenance staff rushed to the scene. After the inspection found that the exhaust valve adjustment screw 3 rupture (Figure 1), the valve locking plate off, valve spring skew. Drag the faulty vehicle back