Unit pump explained
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.
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
External links
Notes and References
- Web site: UPS Unit Pump Systems . R. Bosch. 5 December 2009.
- Book: Diesel Fuel Injection. 1994 . Robert Bosch GmbH . Germany . 1-56091-542-0 . 147 .
- Web site: Delphi electronic unit pump . Delphi . 5 December 2009 . 20 April 2016 . https://web.archive.org/web/20160420175129/http://delphi.com/manufacturers/cv/powertrain/fuel-pumps/diesel-electronic-unit-pump . dead .
- Web site: Liebherr Diesel engine D934 L A6. Liebherr. Web. 17 March 2014.
- Web site: Freightliner business clas M2 line of trucks. Freightliner Trucks. Freightliner LLC. 5 December 2009. dead. https://web.archive.org/web/20090117092539/http://freightlinertrucks.com/media/pdf/M2_Brochure.pdf. 17 January 2009.
- Web site: Freightliner Columbia. Freightliner Trucks. 5 December 2009. dead. https://web.archive.org/web/20090611225236/http://www.freightlinertrucks.com/media/pdf/columbia_brochure.pdf. 11 June 2009.
- Web site: MBE 4000 engine . Detroit Diesel . 5 December 2009.
- Web site: MBE400 . Western Star Trucks . 5 December 2009.
- Web site: Freightliner Columbia. Freightliner Trucks. 5 December 2009. dead. https://web.archive.org/web/20090611225236/http://www.freightlinertrucks.com/media/pdf/columbia_brochure.pdf. 11 June 2009.