阐述广西玉柴机器股份有限公司国Ⅳ发动机电控系统和整车的电气原理,详细介绍各部件的功能、OBD系统,及电控发动机车辆线束的制作要求。重点介绍SCR系统及其与车辆间的电气连接,并给出整车电路连接图。%The author expounded the electrical system of N Ⅳ engine made by Yuchai Machinery Co., Ltd., and the electrical principle of the whole vehicle, introduced in details the function of each part, the OBD system and the manufacture requirements on vehicle wiring harness, emphasizing on the SCR system and its electrical connection with vehicle, then presented the circuit connection diagram of the whole vehicle.
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