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1 Journal of KONES

1 2008

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The simulation of performance characteristics of port injection dedicated compressed natural gas spark ignition engine

Semin, Abu Bakar R., Ismail A.

Journal of KONES

2008

Vol. 15, No. 2

427-432

This paper presents the computational modelling simulation results of port/sequential injection dedicated compressed natural gas (CNG) spark ignition engine to investigate and evaluate the engine performance while base engine converted by using compressed natural gas as an alternative fuel. The baseline engine in this research is four stroke direct injection diesel engine. The computational modelling design and development has performed using GT-Power software at Automotive Excellent Centre Laboratory, Faculty of Mechanical Engineering, University Malaysia Pahang, Malaysia. To investigate the engine performance, the engine computational model is operated between 500-4000 rpm, under steady state condition. In this research, the sequential injection dedicated compressed natural gas spark ignition engine performance investigation results such as torque, power, fuel consumption pressure and exhaust gas emissions were investigated and compared to base diesel engine performance. From the CNG engine computational modelling simulation results are shown that by development of sequential injection dedicated compressed natural gas spark ignition engine has a potential to reduce the engine emissions. Unfortunately, the development of sequential injection dedicated compressed natural gas spark ignition engine can be reducing the engine performance. However, the study of required to improve the performance of sequential injection dedicated compressed natural gas spark ignition engine has a potential of reducing engine.