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当代工程机械是机、电、液一体的机械。工程机械出现故障后,修理者将检测等前期工作做完后,第一件事就是要将故障进行分析,区别故障是在机、电、液的哪一部份。电控高压共轨柴油发动机除燃油系统不同外,较传统发动机还增加了强大电控系统,而且发动机电控系统还与工程机械整机其他功能的电控系统交织在一起,给工程机械维修者增加了难度。而随着农机“国Ⅲ”升级的迫在眉睫,
Contemporary engineering machinery is machine, electricity, liquid machinery. After the construction machinery breaks down, the repairer will check and so on after the preliminary work completes, the first thing is to carry on the analysis of the breakdown, distinguishes the breakdown is in machine, electricity, liquid which part. In addition to the fuel system, the electronically controlled high-pressure common rail diesel engine is more powerful than the conventional engine, and the engine electronic control system is also intertwined with the electronic control system of other functions of the complete machine of the construction machinery, Increased difficulty. With the agricultural machinery “National III ” upgrade imminent,