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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.

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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