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Oil pump

For the pumps used in petroleum production, see pumpjack or submersible pump.

An oil pump is a pump designed to supply pressurised oil to a closed system.

  • In automotive engineering, an oil pump is part of a lubrication system, transporting the oil to various moving parts inside the engine.
  • In hydraulics, the oil pump is used to deliver mechanical energy to remote actuators via tubes, pipes and hoses.

Additional recommended knowledge

Internal combustion engines

In an internal combustion engine, the oil pump is usually a gear pump driven by the camshaft or crankshaft. [1] Oil pressure varies quite a bit during operation, with lower temperature and higher RPM's increasing pressure. To ensure that the oil pressure doesn't exceed the rated maximum, a spring-loaded pressure relief valve routes oil back to its source once pressure exceeds a preset limit. [2]


  1. ^ Bob Mehlhoff. How Oil Pumps Work. Chevy High Performance. Retrieved on 2006-11-13.
  2. ^ Larry Carley (2005). Oil Pumps & Engine Lubrication. AA1Car. Retrieved on 2006-11-13.
This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Oil_pump". A list of authors is available in Wikipedia.
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