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An Experimental Study on Reductions of Idle Emissions with the Syngas Assist in an SI Engine  

Kim, Chang-Gi (Korea Institute of Machinery & Materials)
Kang, Kern-Young (Korea Institute of Machinery & Materials)
Song, Chun-Sub (Graduate School of Automotive Engineering, Kookmin University)
Cho, Young-Seok (Graduate School of Automotive Engineering, Kookmin University)
Publication Information
Transactions of the Korean Society of Automotive Engineers / v.15, no.3, 2007 , pp. 174-182 More about this Journal
Abstract
Fuel reforming technology for the fuel cell vehicles could be applied to internal combustion engine for the reduction of engine out emissions. Since syngas which is reformed from fossil fuel has hydrogen as a major component, it has abilities to enhance the combustion characteristics with wide flammability and high speed flame propagation. In this study, syngas was added to a gasoline engine to improve combustion stability and exhaust emissions of idle state. Syngas fraction is varied to 0%, 50%, 100% with various ignition timing and excess air ratio. Combustion stability, exhaust emissions, fuel consumption and exhaust gas temperature were measured to investigate the effects of syngas addition on idle performance. Results showed that syngas has ability to widely extend lean operation limit and ignition retard range with dramatical reduction of engine out emissions.
Keywords
Syngas; Emissions; Idle; Exhaust gas temperature; Fuel consumption; Cyclic variation;
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