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Combustion Characteristics of Methane-Air Mixture in a Constant Volume Combustion Chamber(3) : Exhaust Emission  

최승환 (부산대학교 기계공학과)
전충환 (부산대학교 기계공학부, 기계기술연구소)
장영준 (부산대학교 기계공학부, 기계기술연구소)
Publication Information
Transactions of the Korean Society of Automotive Engineers / v.12, no.2, 2004 , pp. 1-8 More about this Journal
Abstract
A cylindrical constant volume combustion chamber was used to investigate the exhaust emission characteristics of homogeneous charge, stratified pattern and inhomogeneous charge under various conditions using gas chromatography. In the case of homogeneous charge condition, the $CO_2$ concentration is proportional to excess air ratio and overall charge pressure, the $CO_2$ concentration is proportional to excess air ratio and the UHC concentration is inversely proportional to ignition time and overall charge pressure. In the case of stratified pattern, the RI(rich injection) condition shows better exhaust emission characteristics, especially $CO_2$, than that of HI (homogeneous injection) or LI (lean injection) conditions. In inhomogeneous charge conditions, when initial charge pressure is increased, $CO_2$ and UHC concentration is reduced but $O_2$ concentration is increased. And when the excess air ratio of initial charge mixture is 3.0, UHC and $CO_2$concentration show lowest values.
Keywords
Constant volume combustion chamber; Methane-ai. mixture; Stratified pattern; Initial charge pressure; Gas chromatography;
Citations & Related Records
Times Cited By KSCI : 7  (Citation Analysis)
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