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11-11 2005 [Internal Combustion Engine Symposium 2005]

제목 Exhaust Emission Characteristics of a Diesel
분야 Engine, Emission Technology
언어 English
저자 Hyunchul Kim(Korea Automotive Tech. Institute), Hokil Lee(Korea Automotive Tech. Institute), Byungchul Na(Korea Automotive Tech. Institute), Woo Kang(Korea Automotive Tech. Institute)
Key Words Ariculated Steel Forged Piston, Aluminum Alloy Piston, Chassis Dynamometer, CV575 Mode, Emitted Gas Analyzer
초록 In order meet the world's ever stringent environment regulations, the focus of this current research on diesel engines is to expressly reduce the size and enhance the power of engines simultaneously. Such requirements inherently increase the pressure of the combustion chamber. Under this high pressure, the operational pressure range of the current aluminum piston reaches to about the limit requring a piston with higher operational pressure limit. The steel forged piston is under development as a potential replacement of the aluminum piston. In this study, in order to analyze the change of fuel consumption rate and emitted gas characteristics due to weights and heat transfer characteristics difference between the aluminum piston and the steel forged piston, fuel consumption rate and emitted gas characterisitics are analyzed using a chassis dynamometer. The characteristics of emitted gas were analyzed through a CVS75 mode experiment. Results indicate that the characteristics of emitted gas of the articulated steel forged piston are similar to that of the aluminum alloy piston.
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