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합성가스를 이용한 SI 엔진의 공회전 유해 배기가스 저감에 관한 실험적 연구
김창기(Changgi Kim),강건용(Kernyoung Kang),송춘섭(Chunsub Song),조용석(Youngseok Cho) 한국자동차공학회 2007 한국 자동차공학회논문집 Vol.15 No.3
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.