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介绍了东风_4型机车16V240ZJ型柴油机“飞车”故障情况，指出喷油泵供油齿条和弹性失头销的设计，对方便乘务员进行甩缸处理考虑的不尽完善。分析了由于原设计上的不足所造成不良后果的原因，并介绍了几种改进喷油泵供油齿条及弹性失头销的情况。
The paper introduces the failure of the 16V240ZJ diesel engine “flying car” of Dongfeng _4 locomotive, points out the design of the fuel supply rack and the elastic ejector pin of the fuel pump, and makes it imperfect for the flight attendant to deal with it. The reasons for the unpleasant consequences caused by the lack of original design were analyzed. Several conditions for improving the fuel supply racks and elastic pins were introduced.