Publications


Title황준식, 김동훈, 한상욱, 배충식, 윤수환, 홍재웅, “디젤 엔진 실린더 헤드의 워터 재킷 표면의 온도가 침식 및 부식에 미치는 영향”, 2012 한국자동차 공학회 학술대회 및 전시회, 2012, 11

ABSTRACT

 

In recent years, there have been reports of erosion on cylinder head water jacket from several vehicle manufacturers. The degree of erosion may cause deterioration in the cooling capabilities and serious damage to the engine. The reason for the erosion is widely known as repeating formation and collapse of bubble caused by temperature difference between coolant and surface temperature. Therefore, in this study, the erosion and corrosion behavior of water jacket was investigated with rectangular specimen under 3 different specimen temperature conditions (170℃, 200℃, 230℃). The experiment was conducted in test bench which provide the similar conditions as diesel engine cylinder head. The surface of specimen was visualized with SEM-images after 25hours of operation in the test bench and the weight was measured with precise mass scale. The surface composition of specimen which was exposed to coolant during the experiment was quantified with energy dispersive spectroscopy (EDS) analysis every 25hours in the experiment. From the results, the greatest differential rate of mass reductions were observed with highest surface temperature (230℃) experiment. The composition of aluminum and silicon on the specimen did not have clearly consistent tendency.

Previous김동훈, 황준식, 한상욱, 배충식, 윤수환, 홍재웅, “워터 재킷 표면의 침식 및 부식에 대한 수치적 접근”, 2012 한국자동차 공학회 학술대회 및 전시회, 2012, 11
Next배충식, “국제 에너지 기구/ 에너지 연구기술 위원회 고효율 저공해 연소기술 실행 합의서 활동 보고; Technology Agreemet on Energy Conversation and Emission Reductions in Combustion”, 제 45회 KOSCO Symposium, 2012. 11
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