温度線図による副室付火花点火機関の燃焼解析

概要

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In the previous paper, an infrared absorption-emission pyrometer has been used to measure the instantaneous temperature of cylinder gas at several positions, e.g. auxiliary combustion chamber, torch nozzle, main combustion chambers near the nozzle and near the valves, in a prechamber spark-ignition engine. To make clear the torch combustion mechanism in a prechamber engine which is more efficient, less polluting and capable of utilizing alternative fuels, we have analysed the combustion characteristics at several points in the combustion chamber using these measured temperature diagrams. This paper presents the results of analysed combustion characteristics, such as ignition delay, combustion duration, the maximum temperature, its crank angle, torch jet velocity, flame propagation velocity and temperature-rise rates. In addition these characteristics are found to be affected considerably by total air-fuel ratio and also torch nozzle diameter.
東海大学の論文