Influence of Low Thermal Conductivity Piston on Cooling Loss and Exhaust Loss in Spark Ignition Engine fueled with Ethanol and Hydrogen

Abstract

This research investigated the influence of thermal conductivity of piston on cooling loss and exhaust loss in a spark ignition engine. In the experiments, operations with a conventional piston made of aluminum alloy and a low thermal conductivity piston made of magnesium alloy were compared in an engine fueled with ethanol and hydrogen. Experimental results show that the low thermal conductivity piston brings higher thermal efficiency and larger exhaust heat by reduced cooling loss.