The development of a hydrogen-fueled engine using external mixture injection (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 in 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.
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November 2008
Research Papers
Controlling Backfire for a Hydrogen-Fueled Engine Using External Mixture Injection
T. C. Huynh,
T. C. Huynh
School of Mechanical Engineering,
Sungkyunkwan University
, Jangan-gu, Suwon 440-746, Korea
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J. K. Kang,
J. K. Kang
School of Mechanical Engineering,
Sungkyunkwan University
, Jangan-gu, Suwon 440-746, Korea
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K. C. Noh,
K. C. Noh
School of Mechanical Engineering,
Sungkyunkwan University
, Jangan-gu, Suwon 440-746, Korea
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Jong T. Lee,
Jong T. Lee
School of Mechanical Engineering,
Sungkyunkwan University
, Jangan-gu, Suwon 440-746, Korea
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J. A. Caton
J. A. Caton
Department of Mechanical Engineering,
Texas A&M University
, College Station, TX 77843-3123
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T. C. Huynh
School of Mechanical Engineering,
Sungkyunkwan University
, Jangan-gu, Suwon 440-746, Korea
J. K. Kang
School of Mechanical Engineering,
Sungkyunkwan University
, Jangan-gu, Suwon 440-746, Korea
K. C. Noh
School of Mechanical Engineering,
Sungkyunkwan University
, Jangan-gu, Suwon 440-746, Korea
Jong T. Lee
School of Mechanical Engineering,
Sungkyunkwan University
, Jangan-gu, Suwon 440-746, Korea
J. A. Caton
Department of Mechanical Engineering,
Texas A&M University
, College Station, TX 77843-3123J. Eng. Gas Turbines Power. Nov 2008, 130(6): 062804 (8 pages)
Published Online: August 21, 2008
Article history
Received:
November 19, 2007
Revised:
December 17, 2007
Published:
August 21, 2008
Citation
Huynh, T. C., Kang, J. K., Noh, K. C., Lee, J. T., and Caton, J. A. (August 21, 2008). "Controlling Backfire for a Hydrogen-Fueled Engine Using External Mixture Injection." ASME. J. Eng. Gas Turbines Power. November 2008; 130(6): 062804. https://doi.org/10.1115/1.2940353
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