LPG액상분사 아이싱 방지기구

Abstract

A de-icing method was investigated using by heater coil wire attached conventional 4-hole Top-feed type injector for LPG(liquefied petroleum gas) liquid injection. The heat loss on the nozzle tip of injector was evaluated by measuring the input power to the heater coil wire to keep the initial temperature of nozzle tip surface. Test was conducted for various conditions of injection duration, injection interval and fuel pressure. Unexpectedly, in according to the increase of injection rate, the heat loss of nozzle tip was decreased. Considering the total heat energy balance on nozzle tip can describe these phenomena. The heat loss of nozzle tip was increased as the injection frequency is increased, while slightly smaller heat loss is observed at higher injection pressure. These results could give the basic information about the required heat energy to maintain the nozzle tip temperature as initial condition.