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长城GW 2.8TC增压共轨柴油机发动机怠速时冒黑烟故障现象:国内某专业研发汽车教学设备公司生产的长城GW 2.8TC增压共轨柴油机教学实验台,安装2007年生产的旧发动机,发动机怠速时黑烟滚滚,加速时更严重。故障诊断与排除:该试验台在维修过程中,先后检测过汽缸压力正常,增压系统检查正常,4个喷油器专用试验台检测正常,EGR系统检查正常,分别对比更换了柴油、燃油滤清器、高压油泵(含进油计量单元)、空气流量计及ECU,但故障依旧。
Great Wall GW 2.8TC supercharged common-rail diesel engine idling black smoke Fault phenomenon: a professional research and development of automotive teaching equipment company Great Wall GW 2.8TC pressurized common rail diesel teaching experiment platform, the installation of the old engine produced in 2007, the engine Idle smoke billowing, more serious acceleration. Fault diagnosis and troubleshooting: The test bed in the maintenance process, has detected the normal cylinder pressure, turbocharger system check normal, four injector test bench for normal, normal EGR system checks were compared to replace the diesel fuel filter Cleaner, high-pressure pump (including fuel metering unit), air flow meter and ECU, but the fault still.