现代发动机的转速和功率不断提高,热负荷也愈来愈高,一个良好的润滑系统中的机油泵应满足下列要求: (1) 机油泵应能提供合适的机油压力和机油量; (2) 发动机起动后,在最低工作转速时,应提供足够油压的机油供给各摩擦表面; The modern engine speed and power continue to increase, the heat load is getting higher and higher, a good lubrication system in the oil pump should meet the following requirements: (1) the oil pump should be able to provide the appropriate oil pressure and oil volume; (2) After starting the engine, at the lowest working speed, sufficient oil pressure should be supplied to the friction surfaces;