汽车电路中接地不良的故障分析

Failure Analysis of Motor Vehicle Electrical Circuit Grounding

在单线制的接线中，两个或两个以上的灯具共用一根负极搭铁线，如果这根搭铁线接地不良，或在公共回路部分断开，那么产生的故障不是几个灯具都不工作，而是产生一个不正确的工作状态。针对汉江汽车公司的汉江牌汽车的灯光线路，分析了接地部分引起的故障状态，从而为判断线路故障提供了可靠的理论依据。

When two or more lights share a single negative grourd cable in a circuit of single wire system, if this cable has a bad grounding, or there is breakage in common return wire, then the trouble would not be several lights going off, but it would produce an abnormal working state for the whole light circuit. The state of failure caused by ground cable or common retura wire has been analysed with electrical light circuit of motor vehicle made by the Hangiang Automotine company as object, and reliable theoretical basis is provide in consequence for diagrosing electrical circuit troubles.