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Propagation Processes of Newly Developed Plasma Jet Igniter
Technical Paper
2000-05-0014
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English
Abstract
In plasma jet ignition, combustion enhancement effects occur toward the plasma jet issuing direction. Therefore, when the igniter is attached at the center of cylindrically shaped combustion chamber, plasma jet should issue toward the round combustion chamber wall. The plasma jet igniter that had an annular circular orifice has been developed. The purpose of this study is to elucidate the relationship between the newly developed plasma jet igniter configuration and the combustion enhancement effects. In this newly developed plasma jet igniter, the fine scale turbulence appears on the flame front and flame propagates very rapidly. Plasma jet influences on the flame propagation for long period when the plasma jet igniter has issuing angle 90 [deg.] and large cavity volume. However, in the early stage of combustion, flame front area of issuing angle 45 [deg.] is larger than that of 90 [deg.], because the initial flame kernel is formed by the plasma jet. In the early stage of combustion, the initial flame kernel is extended by the igniter which has a small characteristic length, however the igniter of large characteristic length indicates an effective combustion enhancement for combustion in whole combustion chamber.
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Citation
Ogawa, M., Sasaki, H., Yoshida, K., Shoji, H. et al., "Propagation Processes of Newly Developed Plasma Jet Igniter," SAE Technical Paper 2000-05-0014, 2000.Also In
References
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- Wiriyawit, S. Dabora, E. K. “Modeling the Chemical Effects of Plasma Jet Ignition in One-Dimensional Chamber” Twentieth Symposium (International) on Combustion 179 186 1984
- Tanaka, K Shoji, H. Yoshida, K. Tanaka, H. “Relationship between Plasma Jet and Newly Developed Plasma Jet Igniter” SAE Paper 982564 1998
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