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(1)由机车电路图可知,1075型联合收割机的电动输油泵和喷油泵切断阀的供电线(#47线)是不经任何保险装置而直接连接的。在长期使用中,由于导线较长,经燃油腐蚀或其他机械损伤,经常造成接地短路故障,导致整车线路损坏,严重时甚至会引起火灾。为消除隐患,我们将#47线从#3保险丝的电源端移至负载端,使电动输油泵和喷油泵切断阀的负载电流通过#3保险丝。 (2)1075型联合收割机的起动
(1) From the locomotive circuit diagram, the power supply line (# 47 line) of the electric oil pump of the 1075 combine harvester and the injection pump shut-off valve are directly connected without any safety device. In the long-term use, due to the longer wire, the fuel corrosion or other mechanical damage, often resulting in short circuit to ground fault, resulting in vehicle line damage, even in severe cases may cause a fire. To eliminate the hazard, we moved # 47 wire from the # 3 fuse’s power supply to the load side so that the load current from the electric fuel pump and fuel injection pump shut-off valve passed through the # 3 fuse. (2) 1075 combine harvester start