DocumentCode
3255544
Title
Tumble instability in the IC engine
Author
Fogleman, Mark ; Lumley, John ; Haworth, Daniel ; Rempfer, Dietmar
Author_Institution
Cornell Univ., Ithaca, NY, USA
Volume
3
fYear
2002
fDate
10-13 Dec. 2002
Firstpage
3279
Abstract
Summary form only given. The objective of this project is to analyze the instability associated with the breakdown of tumble during compression of an internal combustion engine flow. It has been observed that the tumble vortex (a vortex whose axis is perpendicular to the cylinder axis which is produced during intake by an asymmetry of the valve(s)) becomes unstable during compression and ultimately leads to turbulence near the end of compression. This turbulence leads directly to better engine performance and the possible use of leaner fuel mixtures via faster burning rates.
Keywords
compressible flow; flow instability; internal combustion engines; turbulence; vortices; IC engine; burning rates; compression; engine performance; instability analysis; internal combustion engine flow; leaner fuel mixtures; tumble breakdown; tumble instability; tumble vortex; turbulence; valve asymmetry; Convergence; Design methodology; Electric breakdown; Ellipsoids; Engine cylinders; Fuels; Internal combustion engines; Pistons; Valves; Velocity measurement;
fLanguage
English
Publisher
ieee
Conference_Titel
Decision and Control, 2002, Proceedings of the 41st IEEE Conference on
ISSN
0191-2216
Print_ISBN
0-7803-7516-5
Type
conf
DOI
10.1109/CDC.2002.1184378
Filename
1184378
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