http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
[가솔린엔진부문] 대형 LPG 엔진에서의 화염 가시화에 의한 연소특성 연구 (연소실 형상과 분사시기 및 공연비의 영향)
김승규(Seungyu Kim),배충식(Choongsik Bae),오승묵(Seungmook Oh),김창업(Changup Kim),강건용(Kemyong Kang) 한국자동차공학회 2001 한국자동차공학회 춘 추계 학술대회 논문집 Vol.2001 No.11_1
Combustion and flame propagation characteristics of LPG engine were investigated in a single cylinder optical engine. A lean burn operation is important not only to enhance fuel economy but also to reduce the thermal stress of a heavy duty LPG engine. There have been lots of efforts to enhance lean operation. As a result, it is well known that the in-cylinder bulk flow, swirl and tumble, and the injection timing are important in enhancing lean operation.<br/> In this study, the effects of piston geometry and injection timing on flame characteristics were investigated. A series of bottom, view flame images were taken using a high-speed camera in one cycle. Concepts of flame area velocity and flame propagation patterns were introduced to analyze the flame characteristics.<br/> The results show the correlation between the f1ame propagation characteristics, which is related to LML and engine design parameters such as piston geometry and injection timing. The piston geometry has significant effect on bulk flow i.e. swirl and squish flow, which subsequently affect f1ame characteristics<br/>