[KSCI] Korea Science Citation Index Service

http://dx.doi.org/10.3795/KSME-B.2005.29.3.384

Variation of Exhaust Gas Temperature with the Change of Spark Timing and Exhaust Valve Timing During Cold Start Operation of an SI Engine

Yang Chang-Seok (국민대학교 자동차공학전문대학원)
Park Young-Joon (국민대학교 자동차공학전문대학원)
Cho Yong-Seok (국민대학교 기계자동차공학부)
Kim Duk-Sang (국민대학교 자동차공학전문대학원)

Publication Information

Transactions of the Korean Society of Mechanical Engineers B / v.29, no.3, 2005 , pp. 384-389 More about this Journal

Abstract

Experimental study of variation of exhaust gas temperature was carried out with the changes of spark timing and exhaust valve timing during the cold start operation of an SI engine. To investigate the effects of these variables on combustion stability, cylinder pressure and exhaust gas temperature were measured and analyzed. Experimental results showed that exhaust gas temperature increased when spark and exhaust valve timings were retarded from the baseline cases. However, combustion stability during cold start deteriorated under the retarded conditions. To increase exhaust gas temperature for fast warmup of catalysts while maintaining combustion stability, an optimal condition for spark and valve timing retard should be appied for the cold start period.

Keywords

Exhaust Gas Temperature; Cold Start; Catalyst Warmup; Variable Valve Timing; Spark Timing;

Citations & Related Records

Times Cited By KSCI : 4 (Citation Analysis)

Reference
Cited By KSCI

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KSCI

Variation of Exhaust Gas Temperature with the Change of Spark Timing and Exhaust Valve Timing During Cold Start Operation of an SI Engine 스파크 점화기관의 냉시동시 배기밸브 타이밍 및 점화시기 변화에 따른 배기가스의 온도변화

Variation of Exhaust Gas Temperature with the Change of Spark Timing and Exhaust Valve Timing During Cold Start Operation of an SI Engine