Now, the domestic large-and-middle-scale hydraulic excavator generally adopts the diesel engine to urge the variable pump to carry on the work.

现在，国产大中型液压挖掘机一般采用柴油机驱动变量泵进行工作。

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This paper analyzed the variable pump system of Komatus PC-6 excavator. The method for testing and adjusting of LS valve and PC valve was introduced.

分析了小松pc - 6型挖掘机的油泵变量系统，给出了LS阀和PC阀的参数调整方法。

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