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정동원(Dongwon Jung),이병석(Byeongseok Lee),손진욱(Jinwook Son),우수형(Soohyung Woo),김영남(Youngnam Kim),오희창(Heechang Oh),한동희(Donghee Han) 한국연소학회 2019 KOSCOSYMPOSIUM논문집 Vol.2019 No.5
This study demonstrates on the technologies for the development of gasoline engine to improve brake thermal efficiency. All experiments have been conducted for stoichiometric operation at 2000RPM. The test engine is a four-cylinder 2.2L GDI engine, which has a long-stroke concept (102mm stroke and 79mm bore). The effects of compression ratio, EGR rate, the number of spark plugs, tumble ratio and super charger were explored. As a result, the maximum brake thermal efficiency can be achieved up to 44.6%.