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가솔린 직접분사엔진에서 EGR량에 따른 연비향상에 관한 연구 A Study on Fuel Consumption Enhancement by EGR rate in a Gasoline Direct injection Engine

백동훈, 이수룡
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한국기계기술학회지 (韓國機械技術學會誌)
제20권 제1호 (2018.02)
pp.68-74
한국기계기술학회 (Korean Society of Mechanical Technology)
초록

The effect of EGR on fuel economy was investigated in a gasoline direct injection engine. The 1-D cycle simulation program of GT-Power was utilized to evaluate fuel consumption rate. At high load, fuel consumption increased by about 2~6% according to EGR rate. Knock mitigation was the main effects, gaining about 80% of the total fuel consumption improvement. At low load, fuel consumption reduction was 0.6~2%, which was much lower than that for high load. The lower improvement of fuel consumption at low load is attributed to solely dilution and chemical effects of exhaust gas.

키워드
Autoignition Delay Time(자발화 지연시간)Exhaust Gas Recirculation(배기가스순환)Fuel Consumption(연료소비율)Gasoline Direct Injection(가솔린 직접분사)Indicated Mean Effective Pressure(도시평균유효압력)Octane Number(옥탄가)
목차
1. 서 론
 2. 엔진 성능해석 방법
 3. 결과 및 해석
 4. 결 론
 후 기
 References
저자
  • 백동훈(Dept. of Mechanical & Automotive Engineering Seoul National University of Science and Technology) | D. H. Baik
  • 이수룡(Dept. of Mechanical & Automotive Engineering Seoul National University of Science and Technology) | S. R. Lee Corresponding Author