论文部分内容阅读
近年来我国拖拉机保有量不断增长,但是,由于故障停車和“带病”作业現象相当普遍,許多机車不能充分发揮效能。据調查,在发生故障的原因中,燃油系故障所引起的停車占总故障时間的10—30％;此外,由于燃油系的技术状态不佳,还引起功率不足、油耗过大等不良后果。产生燃油系故障的主要原因是燃油不清洁,一些高硬度的机械杂质进入精密配合零件,破坏了它們的正常技术状态,特別是引起油泵柱塞付和噴油咀的磨損。例如,根据有关
In recent years, the number of tractors in our country has kept growing. However, many locomotives can not bring their full effectiveness into full play because of the problems of stoppages and “sick” operations. According to the survey, in the cause of the failure, the parking caused by the fuel system fault accounted for 10-30% of the total fault time. In addition, due to the poor technical condition of the fuel system, it also caused the adverse consequences of insufficient power and excessive fuel consumption . The main reason for the fuel system failure is that the fuel is not clean, and some high hardness mechanical impurities enter the precision mating parts, destroying their normal state of technology, and in particular causing the pump plunger and injector nozzles to wear out. For example, according to the relevant