故障现象一辆桂林大宇GL6128HK1大型豪华客车,装配韩国DOOSAN Infracore公司V形六缸增压中冷共轨燃油喷射柴油机,累计行驶了26.7万km,因发动机动力下降并伴有异响而报修。故障诊断起动发动机试车,发动机能迅速起动,故障指示灯未点亮,发动机怠速工作时左侧部位有较沉闷的响声;踩加速踏板使发动机转速稳步提升时,异响声音逐步增大,呈“嘭嘭嘭”状不间断连续响声。因该发动机为V形发动机,为准 Fault phenomenon GuiLu Daewoo GL6128HK1 large luxury bus, equipped with South Korea DOOSAN Infracore V-shaped six-cylinder turbocharged intercooled common rail fuel injection diesel engine, a total of 267,000 km, due to engine power decline and accompanied by abnormal sound and repair. Troubleshooting Start the engine test run, the engine can start quickly, the fault indicator light is not lit, the engine idle work left dull part of the sound; step on the accelerator pedal to make the engine speed increased steadily, the sound of abnormal sound gradually increased, was “嘭 嘭 嘭” continuous uninterrupted sound. Because the engine is a V-shaped engine, whichever is the greater