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A Study on the Reduction of Harmful Exhaust Gas with Diesel-Methanol Stratified Injection System in a Diesel Engine  

강병무 (동아대학교 대학원)
안현찬 (동아대학교 대학원)
이태원 (창원전문대학교 자동차과)
정성식 (동아대학교 기계공학과)
하종률 (동아대학교 기계공학과)
Publication Information
Transactions of the Korean Society of Automotive Engineers / v.10, no.4, 2002 , pp. 43-50 More about this Journal
Abstract
In the present study, reduction of harmful exhaust gas in a diesel engine using stratified injection system of dual fuel (diesel fuel and methanol) was tried. The nozzle and fuel injection pump of conventional injection system were remodeled to inject dual fuel in order from the same injector. The quantity of each fuel was controlled by micrometers, which were mounted at rack of injection pumps. The injection ratio of dual fuel was certificated by volumetric ratio in injection quantity test. Cylinder pressure and exhaust gas were measured and analyzed under various supply condition of duel fuel. We confirmed that combustion of dual fuel was performed successful1y by using modified injection system in a D.I. diesel. Soot and NOx are simultaneously reduced by stratified injection without large deterioration of thermal efficiency, but THC and CO are relatively increased.
Keywords
Dual fuel; Stratified injection; NOx; Soot; Heat release rate; Mass fiaction burned;
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