CATERPILLAR

It is used to increase the oil pressure and ensure a certain amount of oil, and force oil supply to each friction surface. The internal combustion engine widely adopts gear type and rotor type oil pump. The gear type oil pump has simple structure, convenient processing, reliable operation and long service life. , The pump oil pressure is high, and it is widely used. The rotor pump has a complex rotor shape and is mostly pressed by powder metallurgy. This pump has the same advantages as a gear pump, but has a compact structure and a small volume.