0

Full Content is available to subscribers

Subscribe/Learn More  >

Controlling Backfire Using Changes of the Valve Overlap Period for a Hydrogen-Fueled Engine Using an External Mixture

[+] Author Affiliations
T. C. Huynh, J. K. Kang, K. C. Noh, Jong T. Lee

Sungkyunkwan University, Suwon, South Korea

J. A. Caton

Texas A&M University, College Station, TX

Paper No. ICEF2007-1702, pp. 243-251; 9 pages
doi:10.1115/ICEF2007-1702
From:
  • ASME 2007 Internal Combustion Engine Division Fall Technical Conference
  • ASME 2007 Internal Combustion Engine Division Fall Technical Conference
  • Charleston, South Carolina, USA, October 14–17, 2007
  • Conference Sponsors: Internal Combustion Engine Division
  • ISBN: 0-7918-4811-6 | eISBN: 0-7918-3810-2
  • Copyright © 2007 by ASME

abstract

The development of a hydrogen-fueled engine using an external mixture (e.g., using port or manifold fuel injection) with high efficiency and high power is dependent on the control of backfire. This work has developed a method to control backfire by reducing the valve overlap period while maintaining or improving engine performance. For this goal, a single-cylinder hydrogen-fueled research engine with a mechanical continuous variable valve timing system was developed. This facility provides a wide range of valve overlap periods that can be continuously and independently varied during firing operation. By using this research engine, the behavior of backfire occurrence and engine performance are determined as functions of the valve overlap period for fuel-air equivalence ratios between 0.3 and 1.2. The results showed that the developed hydrogen-fueled research engine with the mechanical continuous variable valve timing system has similar performance to a conventional engine with fixed valve timings, and is especially effective in controlling the valve overlap period. Backfire occurrence is reduced with a decrease of the valve overlap period, and is also significantly decreased even under operating conditions with the same volumetric efficiency. These results demonstrate that decreasing the valve overlap period may be one of the methods for controlling backfire in a hydrogen-fueled engine while maintaining or improving performance.

Copyright © 2007 by ASME
Topics: Engines , Valves , Hydrogen

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