Automobile oil pump is generally installed inside the engine and in the oil pan. The function of the oil pump is to lift the oil

When it reaches a certain pressure, it is forced to be sent to the moving surface of each part of the engine. Oil pump structure can be divided into two types

They are gear type and rotor type. Gear oil pump is divided into internal gear type and external gear type, generally the latter

It is called gear oil pump.

When the engine is working, the driving gear on the camshaft is connected with the driving gear of the engine oil pump, which is fixed on the driving gear shaft

The driving gear on the pump rotates, which drives the driven gear to rotate in the opposite direction, and the oil is separated from the oil inlet chamber along the backlash with the pump

The wall is sent to the oil outlet chamber. Low pressure is formed at the oil inlet chamber to generate suction, which sucks the oil in the oil pan into the oil inlet chamber.