밸브 리프트 변화에 따른 실린더 내 흡입 공기의 유동특성

The object of this study is to find new evaluation index for in-cylinder flow characteristics instead of current swirl, tumble coefficient using steady flow test rig on intake port system. To this end, port flow rig test was conducted on DOHC head varying intake valve lift respectively. Finally combination angular coefficient and inclination angle were introduced as new evaluation index for in-cylinder angular flow characteristics instead of swirl and tumble coefficient.