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An Experimental Study on Spark Timing Effect for Fast warmup of Catalyst to Cold Start Operation of an SI Engine  

Kwon, Y.W. (서일대학 자동차과)
Ham, S.H. (동주대학 자동차튜닝과)
Publication Information
Journal of the Korean Society of Mechanical Technology / v.13, no.4, 2011 , pp. 101-108 More about this Journal
Abstract
On cold start operation of an SI engine, a catalyst shows poor performance before it reaches activation temperature. Therefore, fast warmup of the catalyst is very crucial to reduce harmful emissions. In this study, an appropriate control strategy is investigated to increase exhaust gas temperature through changes of spark timing. Combustion stability is also considered at the same time. Exhaust gas temperature and pressure of combustion chamber are measured to investigate the effects of spark timings on cold start and idle performance. Experiments showed that retarded spark timing promotes the combustion at the end of expansion stroke and increases exhaust gas temperature during cold start.
Keywords
Way Catalytic converter(TWC); Exhaust Valve; Spark Timing; Cold Start;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
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