디젤 엔진에서 밸브 스템계의 표면 조도에 따른 오일 누설 특성에 관한 실험적 연구

This paper is for study on the leakage including with surface roughness in the valve stem system of diesel engine. This paper is for study on the oil leakage including with surface roughness in the valve stem system of diesel engine. In the leakage 1, the surface roughness was very dense, but leakage quantity of oil showed growing a trend. In the leakage 1 and 2, when the surface roughness was mor…