Journal of the Korean Society of Industry Convergence (한국산업융합학회 논문집)
- Volume 2 Issue 2
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- Pages.155-163
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- 1999
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- 1226-833X(pISSN)
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- 2765-5415(eISSN)
Tumble flow motion and flame propagation in a SI engine
SI 엔진의 텀불 유동과 화염전파
- Jie, Myoung-Seok (Dept. of Mechanical-Automobile Engineering, Daecheon College)
- 지명석 (대천대학 기계자동차학부)
- Received : 1999.05.30
- Accepted : 1999.10.10
- Published : 1999.10.31
Abstract
In this study, single cylinder engines with different tumble ratio were made to find out in-cylinder fluid motion and flame propagation. Tumble ratio derived from the steady state flow rig test. Flame propagation speed was obtained using cylinder head gasket ionization probe and the piston ionization probe. And the combustion pressure in cylinder was measured to analyze the combustion characteristics. In case of high tumble engine, BSFC and BSHC were decreased and BSNOx was increased at part load test. Also BMEP and combustion peak pressure was increased at full load test. Tumble flow motion had an great effects on initial burning period rather than main burning period in part load test.