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Unit pump

From Wikipedia, the free encyclopedia

Unit pumps on Mack's E7 diesel engine
Unit pumps on Mercedes OM906LA engine

The Unit Pump system[1] is a modular high-pressure diesel injection system, which is closely related to the unit Injector system, and is designed for use in commercial vehicle diesel engines.[2]

The systems use an individual injection pump mounted on the engine block for each cylinder so it is primarily designed for OHV or "cam in the block" engines.[3] The fuel pumps can be either driven by an extra camshaft lobe or by an electrical supply where each pump unit is connected to the injector via a short precise length high-pressure fuel line as opposed to unit Injector systems which combines both a pump and an injector element in a compact unit.

Both systems feature electronically controlled fuel solenoids for precise timing and the injection of fuel quantity is variably adjusted for each cylinder.

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Transcription

Applications

Known commercial vehicle manufacturers using the system are Mack (discontinued), Liebherr,[4] Mercedes-Benz, its subsidiaries Freightliner,[5][6] BharatBenz and Western Star, by Detroit Diesel made[7] MBE 4000 engine.[8][9]

See also

References

  1. ^ R. Bosch. "UPS Unit Pump Systems". Retrieved 5 December 2009.
  2. ^ Diesel Fuel Injection. Germany: Robert Bosch GmbH. 1994. p. 147. ISBN 1-56091-542-0.
  3. ^ Delphi. "Delphi electronic unit pump". Archived from the original on 20 April 2016. Retrieved 5 December 2009.
  4. ^ Liebherr. "Liebherr Diesel engine D934 L A6" (Web). Retrieved 17 March 2014.
  5. ^ Freightliner Trucks. "Freightliner business clas M2 line of trucks" (PDF). Freightliner LLC. Archived from the original (PDF) on 17 January 2009. Retrieved 5 December 2009.
  6. ^ Freightliner Trucks. "Freightliner Columbia" (PDF). Archived from the original (PDF) on 11 June 2009. Retrieved 5 December 2009.
  7. ^ Detroit Diesel. "MBE 4000 engine". Retrieved 5 December 2009.
  8. ^ Western Star Trucks. "MBE400". Retrieved 5 December 2009.
  9. ^ Freightliner Trucks. "Freightliner Columbia" (PDF). Archived from the original (PDF) on 11 June 2009. Retrieved 5 December 2009.

External links


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This page was last edited on 28 November 2023, at 13:15
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