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A Study on Combustion Characteristics of Pre-mixed $CH_4$-air by Flame Trap  

Kim, Deok-Ho (Graduate School, Konkuk University)
Lee, Jai-Hyo (Department of Mechanical Engineering, Konkuk University)
Choi, Su-Jin (Department of Mechanical Design, Dongyang Tech. Colleage)
Cho, Gyu-Back (Korea Institute of Machinery and Materials)
Jeong, Dong-Soo (Korea Institute of Machinery and Materials)
Publication Information
Transactions of the Korean Society of Automotive Engineers / v.13, no.2, 2005 , pp. 22-28 More about this Journal
Abstract
Exhaust gas emissions from internal combustion engines are one of the major sources of air pollution. And, it is extremely difficult to increase gasoline engine efficiency and to reduce $NO_X$ and PM(particulate matter) simultaneously in diesel combustion. This paper offers some basic concepts to overcome the above problems. To solve the problems, a recommended technique is CAI(controlled auto-ignition) combustion. In this paper, a flame trap was used to simulate internal EGR(exhaust gas recirculation) effect. An experimental study was carried out to find combustion characteristics using homogeneous premixed gas mixture in the constant volume combustion chamber(CVCC). Flame propagation photos and pressure signals were acquired to verify the flame trap effect. The flame trap creates high speed burned gas jet. It achieves higher flame propagation speed and more stable combustion due to the effect of geometry and burned gas jet.
Keywords
Exhaust gas emissions; CAI Combustion; Internal EGR; CVCC; Flame trap; Burned gas jet;
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