介绍了内燃机机油泵的类型与工作原理,通过一实例分析了产生流量、压力不足的基本原因,并找到了故障的根源,对设计和生产转子式机油泵有参考价值。 The type and working principle of engine oil pump are introduced. The basic causes of flow rate and pressure shortage are analyzed by an example. The root cause of the fault is found out. It has reference value for the design and manufacture of rotor type oil pump.