Engines: Engine Lubrication: Lubrication system components

Sump	The sump is at the base of an engine. It can be used as a storage container in a 'wet sump system'.
Oil collection pan	An oil collection pan is used in 'dry sump systems' prior to being returned to an oil tank.
Oil tank	The oil tank is part of the dry sump lubrication system and is used for oil storage.
Pickup tube	A pickup tube is used to provide a means of collecting oil for the oil pump.
Oil pump	Oil pumps deliver oil under pressure to the internal engine parts. In a rotor-type oil pump, an inner rotor drives an outer one. Pressure differences force the oil to move. Geared oil pumps use a similar principle.
Oil pressure relief valve	The pressure relief valve is used to prevent damage to an engine due to too much oil pressure.
Oil filters	The oil filter helps to clean the oil in the system. If the filter clogs, a valve opens and directs unfiltered oil to the engine. Most oil-filters on diesel engines are larger than those on similar gasoline engines.
Spurt holes & galleries	Spurt holes and galleries are used to deliver oil from the oil pump to various components and bearings in the engine.
Oil indicators	Oil indicators are used to check when there are safe oil levels in an engine.
Oil cooler	An oil cooler cools oil prior to its reuse in the engine.

Topic	Summary