0

Full Content is available to subscribers

Subscribe/Learn More  >

The Lean Mixture Operational Limits of a S.I. Engine When Operated on Fuel Mixtures

[+] Author Affiliations
Hailin Li

National Research Council Canada, Ottawa, ON, Canada

Ghazi A. Karim, A. Sohrabi

University of Calgary, Calgary, AB, Canada

Paper No. ICEF2005-1109, pp. 145-152; 8 pages
doi:10.1115/ICEF2005-1109
From:
  • ASME 2005 Internal Combustion Engine Division Fall Technical Conference
  • ASME 2005 Internal Combustion Engine Division Fall Technical Conference (ICEF2005)
  • Ottawa, Ontario, Canada, September 11–14, 2005
  • Conference Sponsors: Internal Combustion Engine Division
  • ISBN: 0-7918-4736-5 | eISBN: 0-7918-3768-8
  • Copyright © 2005 by ASME

abstract

The operation of S.I. engines on lean mixtures is attractive in principle since it can provide improved fuel economy, reduced tendency to knock and extremely low NOx emissions. However, the associated flame propagation rates become degraded significantly and drop sharply as the operating mixture is made increasingly lean. Consequently, there exist distinct operational lean mixture limits beyond which satisfactory engine performance cannot be maintained due to the resulting prolonged and unstable combustion processes. The paper presents experimental data obtained in a single cylinder, variable compression ratio, S.I., CFR engine when operated in turn on CH4 , H2 , CO, gasoline, iso-octane and some of their binary mixtures. A quantitative approach for determining the operational limits of S.I. engines is suggested, compared and validated against corresponding experimental results of other traditional approaches. On this basis, the dependence of the values of the lean mixture operational limits on the composition of the fuel mixtures is investigated and discussed. The operational limit for throttled operation with methane as the fuel is also established.

Copyright © 2005 by ASME
Topics: Fuels , Engines

Figures

Tables

Interactive Graphics

Video

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

NOTE:
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