Journal of ILASS-Korea (한국분무공학회지)

Institute for Liquid Atomization and Spray Systems-Korea (한국분무공학회)
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Combustion Characteristics of Gasoline Direct Injection Engine with Water Injection into Intake Port under Low Engine-Load Operating Condition

낮은 엔진 부하의 운전조건에서 흡기포트 내 물 분사에 따른 가솔린 직접분사 엔진의 연소 특성

  • 전해강 (전남대학교 대학원 기계공학과) ;
  • 이경환 (순천대학교 기계우주항공공학부) ;
  • 최명식 (현대자동차 선행가솔린엔진개발팀) ;
  • 박수한 (전남대학교 기계공학부)
  • Received : 2018.06.13
  • Accepted : 2018.06.24
  • Published : 2018.06.30
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Abstract

The purpose of this study is to investigate the effect of water injection on combustion characteristics of gasoline direct injection (GDI) engine with turbo-charger under low-load operating condition. The test engine used in this study has four-cylinder and 10.2 of compression ratio. In order to study the effect of water injection ratio on combustion characteristics, the water was injected into the intake port from 10% to 50%, based on fuel injection quantity. From the experiment, it revealed that the water injection induced the improvement of fuel economy because of the advance of spark-timing by the reduction of in-cylinder temperature. In addition, the water injection caused the prolong of extension of the ignition delay and slight increase of burn duration.

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References

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