The oil pump in the internal combustion engine circulates the oil under pressure to the engine's rotating bearings, sliding pistons and camshafts. This lubricates the bearings, allows the use of large-capacity fluid bearings, and also helps to cool the engine.

In addition to the main purpose of lubrication, pressurized oil is also increasingly used as hydraulic oil to power small actuators. One of the first notable uses of this method was the hydraulic tappet used in camshaft and valve actuation. Recently more and more common uses may include tensioners for timing belts or transmissions for variable valve timing systems.


Not all engines have the same oil injection requirements. For example, high-performance engines put more pressure on the lubrication system. In this case, the lubrication system must be particularly robust to prevent engine damage. Most car engines on the road today do not exceed 5,000–6,000 rpm, but for high-performance engines, this is not always the case, because high-speed engines may be as high as 8000-9000 rpm. In such engines, the oil must circulate fast enough, otherwise the air may be trapped in the oil. Similarly, in order to release power, the engines in some high-performance applications run on lighter oil, which requires less power to run the oil pump. Nowadays, the weight of common engine oil is usually 5W-30 or 10W-30, while high-performance engines may use 0W-20 engine oil with low viscosity


Zhejiang Yongling Hydraulic Machine Co , Ltd . is a professional China manufacturer and supplier of Oil Pumps and Vane Pumps Cartridge Kits . Our products are widely used in cutting, plastics, forging, engineering, leather, pressure, metallurgy, agriculture, transportation machinery and machine tools, hydraulic stations, automatic production lines and other fields. We have obtained the ISO9001 international quality management system certification, and our products have won a good reputation in China with their stable and reliable quality, and they are used in the 2010 Asian Games torch tower. Our products occupy most of the domestic market, while being exported to Southeast Asia, Russia, Africa and other foreign markets. Welcome to consult and order: https://www.china-vanepump.com/product/sqp-series-vane-pumps-with-lower-noise/sqp1-vane-oil-pump-with-lower-noise.html