[가솔린엔진부문] 가솔린엔진의 냉각계 유로 변경을 통한 금속면온도 및 전열에 관한 실험적 연구

Metal surface temperatures around the combustion chamber in a gasoline engine directly affect thermal durability aid performance of the engine. Metal surface temperatures are influenced by many cooling factors such as drilled water passage, deflector, combustion chamber wall thickness, pillar, aid coolant flow pattern The object of this study is to learn how the coolant passages and coolant flow pattern in an engine influence to tile engine metal surface temperature at engine full load aid speed. From the test result. it is suggested a plan to reinforce the engine stiffness aid to reduce the thermal stress simultaneously. Also, approaches arc introduced to reduce the thermal load on the engine by adjusting the discharging direction from the water pump and by optimizing the water transfer holes in the cylinder head gasket. These methods aid the optimized engine cooling system, which were suggested in this paper, were adapted for an engine in progress to eliminate the exhaust valve scat wear.