Effect of Pocket Location on Combustion Process in Natural Gas-Fueled Rotary Engine

Abstract:

In ordered to realize dynamic simulation of working process in the rotary engine, a spark-ignition rotary engine is chosen as the research object, the detailed calculated models have been established including combustion model and turbulence model. With numerical simulation, same important information in the cylinder is obtained, such as the velocity, temperature fields and flame propagation. Furthermore, the effect of pocket location on the flame propagation is analyzed. The results show that under the calculating condition, when the pocket is located at the rear of rotor, the rate of combustion and the peak pressure are better than that of other cases, and NO emissions increases accordingly. This study provides some theory guidance for the determination of best pocket location under different working conditions.

• Periodical: Applied Mechanics and Materials (Volumes 316-317)
• Pages: 73-79
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.316-317.73
• Online since: April 2013
• Authors: Fan Bao Wei, Pan Jian Feng, Liu Yang Xian, Chen Rui, Wu Di
• Keywords: Combustion Process, Location of Pocket, Natural Gas, Rotary Engine, Two-Dimensional Simulation

References

[1] Zhu Jian-ming, Peng Dai-yong. Current World Oil Situation and Development Opportunities for IC Engine[J]. Chinese Internal Combustion Engine Engineering,2011， 32（3) :80-84. (in Chinese)

[2] Lu Fa, Yu Nai-biao, et al. Wankel engine[M].Beijing: National Defence Industry Press,1990. (in Chinese)

[3] Liang Dao-yin, Yang Dao-yin. Prospects of Development of Rotary Engines in China[J]. power Engineering, 1997,17(5):78-83. (in Chinese)

[4] Abraham,J. and Bracco F.V., "Comparisons of Computed and Measured Pressure in a Premixed Charge Natural Gas-Fueled Rotary Engine", SAE paper No.890671,SAE Trans.,Vol.98,1989.

DOI: 10.4271/890671

[5] Nobuyuki Kawahara and Eiji Tomita., "Cycle-resloved measurements of the fuel concentration near a spark plug in a rotary engine using an in situ laser absorption method", Proceedings of the Combustion Institute 31 (2007) 3033-3040..

DOI: 10.1016/j.proci.2006.08.088

[6] DeFilippis, M., Hamady, F., Novak, M., and Schock, H., "Effects of Pocket Configuration on the Flow Field in a Rotary Engine Assembly," SAE Technical Paper 920300, 1992.

DOI: 10.4271/920300

[7] Grasso,F., "Three-Dimensional Computation of Flows in a Stratified-Charge Rotary Engine", SAE Paper 870409, SAE Trans., Vol.96,1987.

DOI: 10.4271/870409

[8] Abraham,J. and Bracco F.V., " Comparisons of Computed an Measured Mean Velocity and Turbulence intensity in a motored Rotary Engine", SAE paper No.881602,1988.

DOI: 10.4271/881602

[9] Li Xiao-chun, Pan Jian-feng, Li Dei-tao, et al. Numerical Simulation of the Combustion Process in the Parallel Plated Combustor under One Millimeter[J]. Small Internal Combustion Engine and Motorcycle, 2010，39(3) 3:33-39. (in Chinese)

[10] Abraham,J. and Bracco F.V., "3-D Computation of Premixed-Charge Natural Gas Combustion in Rotary Engines", SAE paper No.910625,1991.

DOI: 10.4271/910625