Abstract
Jet ignition method by hydrogen oxygen flame is proposed to control the combustion of lean mixtures. Hydrogen oxygen flame jet is supplied from the cavity whose volume is less than one percent of main chamber volume through a nozzle. The burning velocity of the cavity gas is very fast and the combustion duration can be drastically shortened. The pressure oscillation often takes place. The heat flux at the wall of main chamber becomes bigger than the case of hydrogen air mixture. Combustion processes for various conditions are investigated. The effects of cavity configuration on pressure and heat flux histories are shown. The bigger the cavity volume becomes, the larger the pressure oscillation and the value of heat flux become.
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