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在调整柴油机的供油时间时,人们总是习惯于用转动曲轴的办法来确定供油开始时活塞所处的位置。实际上,用转动油泵凸轮轴的办法来确定此位置,更省时间,更准确。本文就以东方红—75型拖拉机的发动机为例,来解释一下这种调整方法。 1.找出第一缸活塞的压缩行程上止点,设一指针,并在风扇皮带轮上标出与指针相对应的记号,再以此记号为基准,标出正常供油角度所对应的弧长的两个记号(即22.5°和22.8°处)。接着转动曲轴,使指针指
When adjusting the diesel fuel supply time, people are always accustomed to using the crankshaft to determine the piston at the beginning of the oil supply. In fact, it is less time and more accurate to determine this position by turning the pump camshaft. In this paper, Dongfanghong -75 tractor engine, for example, to explain this adjustment method. 1. Find the compression stroke of the first cylinder piston top dead center, set a pointer, and the fan pulley marked with the pointer corresponding to the mark, and then use this mark as a benchmark, marked the normal angle of the arc corresponding to the arc Two long marks (ie 22.5 ° and 22.8 °). Then turn the crankshaft so that the pointer means