Full Content is available to subscribers

Subscribe/Learn More  >

Experimental Study of Methane Fuel Oxycombustion in an SI Engine

[+] Author Affiliations
Andrew Van Blarigan, Jyh-Yuan Chen, Robert Dibble

University of California at Berkeley, Berkeley, CA

Darko Kozarac

University of Zagreb, Zagreb, Croatia

Reinhard Seiser, Robert Cattolica

University of California at San Diego, La Jolla, CA

Paper No. ICEF2012-92109, pp. 339-348; 10 pages
  • ASME 2012 Internal Combustion Engine Division Fall Technical Conference
  • ASME 2012 Internal Combustion Engine Division Fall Technical Conference
  • Vancouver, BC, Canada, September 23–26, 2012
  • Conference Sponsors: Internal Combustion Engine Division
  • ISBN: 978-0-7918-5509-6
  • Copyright © 2012 by ASME


An experimental investigation of the thermal efficiency, combustion efficiency, and CoV IMEP, of methane fuel oxycombustion in an SI engine has been carried out. Compression ratio, spark-timing, and oxygen concentration were all varied. A variable compression ratio SI engine was operated on both wet and dry EGR working fluids, with results illustrating that the efficiency of the engine operating with a large amount of EGR was significantly reduced relative to methane-in-air operation over all oxygen concentrations and compression ratios. The maximum thermal efficiency of wet EGR, dry EGR, and air was found to be 23.6%, 24.2%, and 31.4%, respectively, corresponding to oxygen volume fractions of 29.3%, 32.7% and 21%. Combustion efficiency was above 98% for wet EGR and approximately 96% for dry EGR. CoV IMEP was low for both cases. The much lower efficiency of both EGR cases relative to air is primarily a result of the reduced specific-heat ratio of the EGR working fluids relative to air working fluid.

Copyright © 2012 by ASME



Interactive Graphics


Country-Specific Mortality and Growth Failure in Infancy and Yound Children and Association With Material Stature

Use interactive graphics and maps to view and sort country-specific infant and early dhildhood mortality and growth failure data and their association with maternal

Citing articles are presented as examples only. In non-demo SCM6 implementation, integration with CrossRef’s "Cited By" API will populate this tab (http://www.crossref.org/citedby.html).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In