故障现象一辆庆铃轻型载货车(车辆型号为QL1041HEWR),搭载4KH1-TC发动机,累计行驶里程约为9.8万km。该车在行驶途中发动机突然熄火,重新起动着机后,发动机空载转速只能升到2 000 r/min,车速最高只能达到30 km/h。故障诊断起动发动机,验证故障现象。发动机能正常起动着机,但加速缓慢,将加速踏板踩到底,发动机转速只能升到2 000 r/min,同时仪表上的发动机故障灯点亮。用故 Fault phenomenon A Qingling light truck (vehicle model QL1041HEWR), equipped with 4KH1-TC engine, the cumulative mileage of about 98,000 km. The car suddenly lost its way while driving, restarting the machine, the engine no-load speed can only rise to 2 000 r / min, the maximum speed can only reach 30 km / h. Troubleshooting Start the engine and verify the symptoms. The engine was able to start the engine normally, but with a slow acceleration, the accelerator pedal was depressed until the engine speed rose to 2 000 r / min and the engine fault light on the meter came on. Use it