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PROPAGATION PROCESSES OF NEWLY DEVELOPED PLASMA JET IGNITER
Masaya Ogawa,Hisatoshi Sasaki,Koji Yoshida,Hideo Shoji,Hidenori Tanaka 한국자동차공학회 2002 International journal of automotive technology Vol.3 No.1
In plasma jet ignition, combustion enhancement effects occur toward the plasma jet issuing direction. Therefore, when the igniter is attached at the center of a 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 combustion enhancement effects. In this newly developed plasma jet igniter, flame front wrinkle appears on the flame front and flame propagates rapidly. Plasma jet influences on the flame propagation for long period when the plasma jet igniter has issuing angle 90 degrees and large cavity volume, because the plasma jet only lasts several ms. However, in the early stage of combustion, flame front area of issuing angle 45 degrees is larger than that of 90 degrees, because the initial flame kernel is formed by the plasma jet.<br/>
PROPAGATION PROCESSES OF NEWLY DEVELOPED PLASMA JET IGNITER
Ogawa, Masaya,Sasaki, Hisatoshi,Yosgida, Koji,Shoji, Hideo,Tanaka, Hidenori The Korean Society of Automotive Engineers 2002 International journal of automotive technology Vol.3 No.1
In plasma jet ignition, combustion enhancement effects occur toward the plasma jet issuing direction. Therefore, when the igniter is attached at the center of a 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 combustion enhancement effects. In this newly developed plasma Jet igniter, flame front wrinkle appears on the flame front and flame propagates rapidly. Plasma Jet influences on the flame propagation far long period when the plasma jet igniter has issuing angle 90 degrees and large cavity volume, because the plasma jet only lasts several ms. However, in the early stage of combustion, flame front area of issuing angle 45 degrees is larger than that of 90 degrees, because the initial flame kernel is formed by the plasma jet.