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http://dx.doi.org/10.7467/KSAE.2012.20.3.106

The Effect of Multi-ignition Strategy on the Combustion and Emission Characteristics in a Ultra Lean Burn GDI Engine  

Park, Cheol-Woong (Environmental System Research Division / Engine Research Team, Korea Institutes of Machinery & Materials)
Kim, Sung-Dae (Environmental System Research Division / Engine Research Team, Korea Institutes of Machinery & Materials)
Kim, Hong-Suk (Environmental System Research Division / Engine Research Team, Korea Institutes of Machinery & Materials)
Oh, Hee-Chang (Department of Mechanical Engineering, Korea Advanced Institutes of Science & Technology)
Bae, Choong-Sik (Department of Mechanical Engineering, Korea Advanced Institutes of Science & Technology)
Publication Information
Transactions of the Korean Society of Automotive Engineers / v.20, no.3, 2012 , pp. 106-112 More about this Journal
Abstract
Since air pollution problem by emissions from automotive vehicles has become social issues, lean-burn gasoline direct injection (GDI) engine is focused as an alternative to meet the requirement of reinforced emission regulation and improved fuel consumption. Spray-guided type DI combustion is promising technology, which characterized by the centrally mounted injector and closely positioned spark plug, since stable lean combustion can be realized even at ultra-lean mixture condition. In the present study, the effect of multi-ignition with developed charge coil on combustion and emission characteristics was investigated in optical accessible single cylinder engine. In order to fully understand the in-cylinder phenomena and the mechanisms of emission production, optical diagnostics, such as flame visualization was also carried out at frequently using operating condition. Multi-ignition is effective to improve fuel economy but increase NOx emission at flammability limit.
Keywords
Gasoline direct injection; Ultra lean burn; Multi-ignition; Late Injection; Combustion stability; Flame visualization;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
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