首页|A 2-Zone Combustion Model and its Validation for a Spark Ignition Engine Fueled with Coal-bed Gas
A 2-Zone Combustion Model and its Validation for a Spark Ignition Engine Fueled with Coal-bed Gas
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NSTL
Coal-bed gas has been considered an attractive alternative fuel for combustion engines. In the present study, a special spark-ignition combustion system with a swirl chamber is used to operate the engine with coal-bed gas and a 2-zone combustion model has been developed and employed to study the characteristics of combustion and emissions of the engine. The combustion model includes two sub-models, with the first calculating the turbulence intensity history and the second modelling the jet flow through the orifice of the swirl chamber. Emissions of NO{sub}x, HC and CO have been predicted using the numerical model based on an extended Zeldovich mechanism, wall quenching and incomplete oxidation theory. The effects of various chemical components in coal-bed gas on the engine combustion process and emissions have been investigated, with a satisfactory agreement between the simulation and experimental data achieved.
Coal-bed GasCombustion ModelTurbulence Intensity
QIAN Yejian、ZUO Chengji、GU Honglan、XU Hongming
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School of Mechanical and Automotive Engineering, Hefei University of Technology
School of Engineering, The University of Birmingham
2009
Transaction of the Hongkong Institute of Engineers
NSTL
