Journal of ILASS-Korea (한국분무공학회지)

Institute for Liquid Atomization and Spray Systems-Korea (한국분무공학회)
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Analysis of Combustion Characteristics and Diesel Exhaust Valve's Control with GT-Power 1-D Detail Model

GT-Power기반 디젤 배기밸브 제어모델 개발 및 연소 특성 해석

  • 이유민 (숭실대학교 공과대학 기계공학부) ;
  • 조인수 (숭실대학교 대학원 기계공학과) ;
  • 김주현 (숭실대학교 공과대학 기계공학부) ;
  • 이진욱 (숭실대학교 공과대학 기계공학부)
  • Received : 2018.01.16
  • Accepted : 2018.03.20
  • Published : 2018.03.31
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Abstract

In this study, the effects of variation in cam phasing and valve lift of exhaust valves by using Cam-in-Cam system on combustion and emission characteristics for diesel engine were investigated under GT-POWER simulation environment. This paper showed analytic result of combustion characteristics and diesel exhaust valve's control with GT-Power 1-D detail model. As a result, it was found that volumetric efficiency and IMEP were decreased as the exhaust valve opening and closing timing is advanced due to its internal EGR effects. Also, it was found that NOx emission were decreased as EVC timing was retarded. These show that the retarding the exhaust valve closing and opening while keeping the duration at constant can be effective for controlling AFR and mixing rate in diffusion combustion of diesel engine.

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References

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