liu.seSearch for publications in DiVA
Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • oxford
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Investigation of Common Wear Factors in the Diesel Engines Fuel System, in Order to Develop Accelerated Life Evaluation Tests
Linköping University, Department of Management and Engineering, Fluid and Mechatronic Systems.
2015 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

The task of this thesis is to analyse the wear factors in a diesel engine fuel system. Tests based on common documented wear factors and theory will be used in order to develop and localize the wear enhancing inputs during usage.

The test rig used in the thesis is a 6-cylinder 13-liter Scania diesel engine, powered with an electrical engine in a non-firing test application. The non-firing procedure is done in order to isolate the damage produced from the fuel circulation in the fuel system. The main parameters to control in this test is engine speed , fuel temperature, rail pressure and injection rate.

The wear factors analysed and aggravated during the tests was abrasion in the bearings and cavitation damage in the valves of the high pressure pump. The aggravation of the bearing abrasion was done by decreasing the engine speed and limit the supplied oil pressure by closing the inlet and outlet for the pump. The aggravation of the cavitation damage was done by maximising all the input parameters. Further understanding of the connection to cavitation damage growth and the input parameters where gathered by altering one parameter at a time.

There where no indication of damage due to bearing abrasion, even after several alterations. Cavitation damage could be accelerated by decreasing the vapour pressure, and/or increase the flow speed of the fluid. Unfortunately an increase in fluid velocity created an uneven damage generation in the high pressure pump and should not be used as main parameter to accelerate the wear. An increased damage growth due to a decrease in the vapour pressure should be further investigated. Additional test time will be a necessity for a greater comprehension and a more even damage generation.

Place, publisher, year, edition, pages
2015. , p. 87
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:liu:diva-145339ISRN: LIU-IEI-TEK-A--15/02299--SEOAI: oai:DiVA.org:liu-145339DiVA, id: diva2:1185315
Subject / course
Applied Thermodynamics and Fluid Mechanics
Supervisors
Examiners
Available from: 2018-02-27 Created: 2018-02-23 Last updated: 2018-02-27Bibliographically approved

Open Access in DiVA

Investigation of Common Wear Factors in the Diesel Engines Fuel System, in Order to Develop Accelerated Life Evaluation Tests(86371 kB)5 downloads
File information
File name FULLTEXT01.pdfFile size 86371 kBChecksum SHA-512
e4a7bd34b3537da5cb52eee224351498b20f57160f060493b37b424c601cba7640ed6eb415b0a23dbdb2378222af49096bebf2ccc4c04e5b4c848451306e1471
Type fulltextMimetype application/pdf

By organisation
Fluid and Mechatronic Systems
Engineering and Technology

Search outside of DiVA

GoogleGoogle Scholar
Total: 5 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

urn-nbn

Altmetric score

urn-nbn
Total: 18 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • oxford
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf