Abstract
A jet ignition method by flame jet is proposed to the combustion of lean mixture. It is worried that the heat loss of the jet ignition method becomes bigger than that of conventional ignition, because the velocity of the flame jet is very fast and the temperature of it is very high. It is thought that the heat flux at the nozzle becomes bigger than that of other locations. In this report, the heat flux distribution at the nozzle inside is investigated. The results are that the flame pattern and the nozzle diameter affect the heat flux. The smaller the nozzle diameter is, the bigger the heat flux at the nozzle is.
