一台新修理过的E512型联合收割机发动机机油压力过低,当机油温度为80℃时,机油压力仅为98千帕左右(该发动机的机油标准压力为392～493千帕)。为了排除发动机机油压力过低的故障,我们曾对机油泵、润滑系各进出油管、机油限压阀、过滤器转子轴套和油水交换器等部位进行了检查,并检测了轴瓦和凸轮轴套的配合间隙,都未发现故障的原因 A newly repaired E512 Combine Harvester engine oil pressure is too low, when the oil temperature is 80 ℃, the oil pressure is only about 98 kPa (the engine oil standard pressure of 392 ~ 493 kPa). In order to eliminate the engine oil pressure is too low fault, we have on the oil pump, lubrication system of the inlet and outlet tubing, oil pressure limiting valve, filter rotor bushings and oil-water exchanger and other parts were inspected and tested bushings and camshaft bushing With the gap, did not find the cause of the malfunction