The oil pump is an internal combustion engine part that circulates engine oil under pressure to the rotating bearings, the sliding pistons and the camshaft of the engine. This lubricates the bearings, allows the use of higher-capacity fluid bearings, and also assists in cooling the engine.

From around 1900 onwards, internal combustion engines moved to a forced-feed system, where oil is pumped around (forced) to the various parts of the engine. All modern engines use a fully forced-feed lubrication system and the key to this is the oil pump.

Surprisingly, the oil pump circulates oil in an internal combustion engine. The oil pump is a part of an engine lubrication system that pumps oil under pressure. It pumps oil from the sump through the galleries to the rotating bearing, the sliding pistons, and the engine’s camshaft.

Engine oil circulates through the engine to lubricate moving components, create a barrier between metal parts, seal the combustion chamber, wash sludge buildup off of internal parts, and keep the engine running cool. To move the oil around, every engine is equipped with an oil pump.

Internal Combustion Engine Handbook Basics, Components, Systems, and Perspectives List of Chapters 1 Historical Review 2 Definition and Classification of Reciprocating Piston Engines 2.1 Definitions 2.2 Potentials for Classification 2.2.1 Combustion Processes 2.2.2 Fuel 2.2.3 Working Cycles 2.2.4 Mixture Generation 2.2.5 Gas Exchange Control

内燃機（英語： Internal combustion engine ，縮寫為ICE）是熱機的一種，能將燃料的化學能轉化動能。一般的實現方式为，燃料與空氣混合燃燒，產生熱能，氣體受熱膨脹，透過機械裝置轉化為機械能對外做功。

The oil pump in an internal combustion engine circulates engine oil under pressure to the rotating bearings, the sliding pistons and the camshaft of the engine. This lubricates the bearings, allows the use of higher-capacity fluid bearings and also assists in cooling the engine.

Oct 1, 1991 · Modern engines work harder and run hotter and consequently place more demands on the engine oil and the design of the lubrication system. The paper presents an overview of the influences of various oil pump parameters as oil pump suction port, rotor geometry and oil pump component clearances on the engine's operating behavior.

The oil pump in an internal combustion engine circulates engine oil under pressure to the rotating bearings, the sliding pistons and the camshaft of the engine.

The oil pump in an internal combustion engine circulates engine oil under pressure to the rotating bearings, the sliding pistons and the camshaft of the engine. This lubricates the...