The function of the automobile oil pump is to pump the oil in the oil pan to the oil filter and various lubricating oil passages after being pressurized to lubricate the main moving parts of the engine and to filter the oil. When the engine is working, the oil pump works continuously, so as to ensure the continuous circulation of the oil in the lubricating oil circuit.
 

Since the speed of the oil pump is proportional to the engine speed, the oil pump has the worst oil supply capacity at low speeds. The oil pump used in the automobile engine usually adopts the gear type and the rotor type. The working principle of these two kinds of oil pumps is the same, both use the volume change to make low-pressure oil into high-pressure oil, so it is also called positive displacement oil pump. It is characterized by simple structure, reliable operation, and convenient manufacture and repair.
 

The car oil pump is used to pump oil. A pump is a machine that transports or pressurizes a liquid. It transfers the mechanical energy of the prime mover or other external energy to the liquid, making the liquid energy increase. The pump is mainly used to transport liquids such as water, oil, acid-base liquid, emulsion, suspension emulsion and liquid metal, and can also transport liquid, gas mixture and liquid containing suspended solids.
 

Pumps can usually be divided into three categories: positive displacement pumps, dynamic pumps and other types of pumps according to their working principles. In addition to classification by working principle, it can also be classified and named by other methods. For example, according to the driving method, it can be divided into electric pump and hydraulic pump, etc.; according to the structure, it can be divided into single-stage pump and multi-stage pump