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POPPET VALVE 형 2행정 엔진의 정상 상태 소기 유동 연구 (Ⅱ) -수치 해석 방법
김종규(J.K.Kim),허강열(K.Y.Huh),정용일(Y.I.Jung) 한국자동차공학회 1994 한국자동차공학회 춘 추계 학술대회 논문집 Vol.1994 No.11_1
A two-stroke engine has several advantages over a four-stroke engine. It is simple in structure, light in weight and smoothly operating, etc. The scavenging flow in the cylinder is one of the most important factors in determining the performance and power of a poppet-valve-type two-stroke engine. In this study, a shrouded valve is tested to improve the scavenging flow pattern. The scavenging flow paterrn and trapping efficiency are investigated by 3-D computational fluid dynamic analysis with respect to the shroud angle, shroud shape, motoring speed and valve lift-Results show that the trapping efficiency is the highest with 120 deg shrouded valve.<br/>