Part Load Performance Characteristics according to Inlet Valve Angle

흡입 밸브 각도에 따른 엔진 부분부하 성능 특성

  • Lee, Jung-Man (Graduate School of Energy & Environment, Seoul National University of Technology) ;
  • Lee, Jae-Won (Graduate School of Energy & Environment, Seoul National University of Technology) ;
  • Kim, Hyeong-Sig (Graduate School of Energy & Environment, Seoul National University of Technology) ;
  • Kwon, Soon-Tai (Graduate School of Energy & Environment, Seoul National University of Technology) ;
  • Park, Chan-Jun (Department of Mechanical Engineering, Seoul National University of Technology) ;
  • Ohm, In-Yong (Department of Mechanical Engineering, Seoul National University of Technology)
  • 이정만 (서울산업대학교 에너지환경대학원) ;
  • 이재원 (서울산업대학교 에너지환경대학원) ;
  • 김형식 (서울산업대학교 에너지환경대학원) ;
  • 권순태 (서울산업대학교 에너지환경대학원) ;
  • 박찬준 (서울산업대학교 기계공학과) ;
  • 엄인용 (서울산업대학교 기계공학과)
  • Published : 2008.04.10

Abstract

This paper searched through mixture ratio response test whether exert effect that is some in part load performance of engine according to inlet valve angle in gasoline engine. Engines that inlet valve angle is narrow decreased quantity of NOx among exhaust gas than engine that inlet valve angle is wide, and ignition timing was retard, and fuel consumption improved a little. That quantity of NOx among exhaust gas decreases and ignition timing was retard can judge that fast burning occurred. Fast burning can decrease output decline and misfire that can happen at lean burning. Can be judged by thing which engine's combustion performance improves if inlet valve angle is narrow if examine test result.

본 논문에서는 가솔린 기관에서 흡입 밸브 각도가 엔진의 부분부하 성능에 어떠한 영향을 미치는지를 혼합비 반응 특성을 통해 알아보았다. 흡입 밸브각이 작은 엔진이 흡입 밸브 각이 큰 엔진에 비해 배기가스 중 질소산화물 (BSNOx)의 양은 줄어들었고, 점화시기는 지각되었고, 제동연료소비율은 조금 개선되었다. 배기가스 중 질소산화물의 양이 줄고 점화시기가 지각 되었다는 것은 급속 연소가 일어났다고 판단할 수 있다. 시험 결과를 살펴보면 흡입 밸브각이 작아지면 기관의 연소 성능이 좋아지는 것으로 판단 될 수 있다.