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1 故障排除 故障现象 一辆装置交流发电机的双排座汽车,充电系发生一起奇异故障,即低、中速时充电系正常,唯独高速时电流表无显示而不充电。 故障检查与分析 该车驾驶员执行任务紧急,我们只得更换一台备用的交流发电机。代换的交流发电机装车后,启动发动机,发动机无论在低、中、高速运转时,充电系均正常。由此可见,故障在交流发电机本身。解体交流发电机,测量各绕组阻值和二极管
1 Troubleshooting Symptom A unit alternator two-seater car, charging system with a strange failure, that is, low, medium-speed charging system is normal, except at high speed ammeter no display without charging. Troubleshooting and analysis The driver of the vehicle was in an emergency and we had to replace a spare alternator. Replacement of the alternator after loading, start the engine, the engine no matter in low, medium and high speed operation, the charge system are normal. This shows that the fault in the alternator itself. Dissolve the alternator and measure the winding resistance and diode