分析了小松PC220-6型挖掘机发动机控制系统的结构和工作原理,介绍了故障诊断技术和发动机大修后油门的安装调整方法,并给出了检修实例,有助于快速、准确地排除类似机型的故障。 The structure and working principle of the Komatsu PC220-6 excavator engine control system are analyzed. The fault diagnosis technology and the installation and adjustment method of the throttle after overhaul are introduced. Examples of overhauls are given, which can help to quickly and accurately eliminate similar machines Type of fault.