Oil Pump: Description and Operation

Oil pump
The oil pump pumps oil from the oil pan via channels in the intermediate section and cylinder block into the cylinder head and onwards in the system. The oil pump is on the end of the crankshaft. The crankshaft runs through the oil pump.

A duo-centric gear wheel reduces the flow of oil, increasing the pressure. This results in a pulse action which forces out the oil. The oil can only flow in one direction.