직접분사식 LPG 엔진의 연소전략 및 공기과잉률 변화에 따른 연소특성 비교Comparison of Combustion Characteristics with Combustion Strategy and Excess Air Ratio Change in a Lean-burn LPG Direct Injection Engine
- Other Titles
- Comparison of Combustion Characteristics with Combustion Strategy and Excess Air Ratio Change in a Lean-burn LPG Direct Injection Engine
- Authors
- 조시현; 박철웅; 오승묵; 윤준규
- Issue Date
- 2014
- Publisher
- 한국자동차공학회
- Keywords
- LPG direct injection(LPG 직접분사); Ultra lean combustion(초희박연소); Spray-guided type combustion system(분무유도방식 연소기구); Brake specific fuel consumption(연료소비율); Combustion stability(연소안정성)
- Citation
- 한국자동차공학회 논문집, v.22, no.6, pp.96 - 103
- Journal Title
- 한국자동차공학회 논문집
- Volume
- 22
- Number
- 6
- Start Page
- 96
- End Page
- 103
- URI
- https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/13400
- DOI
- 10.7467/KSAE.2014.22.6.096
- ISSN
- 1225-6382
- Abstract
- Liquefied Petroleum Gas(LPG) has attracted attention as a alternative fuel. The lean-burn LPG direct injectionengine is a promising technology because it has an advantage of lower harmful emissions. This study aims to investigatethe effect of combustion strategy and excess air ratio on combustion and emission characteristics in lean-burn LPGdirect injection engine. Fuel consumption and combustion stability were measured with change of the ignition timingand injection timing at various air/fuel ratio conditions. The lean combustion characteristics were evaluated as a functionof the excess air ratio with the single injection and multiple injection strategy. Furthermore, the feasibility of leanoperation with stratified mixture was assessed when comparing the combustion and emission characteristics withpremixed lean combustion.
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