한국자동차공학회논문집 (Transactions of the Korean Society of Automotive Engineers)

  • 제19권5호
  • /
  • Pages.14-21
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  • 2011
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  • 1225-6382(pISSN)
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  • 2234-0149(eISSN)
한국자동차공학회 (The Korean Society of Automotive Engineers)
권호 표지

DC 모터방식 EGR 밸브를 적용한 승용디젤엔진의 앞먹임 공기량 제어에 관한 연구

Feedforward EGR Control of a Passenger Car Diesel Engine Equipped with a DC Motor Type EGR Valve

  • 오병걸 (한양대학교 대학원 자동차공학과) ;
  • 이민광 (한양대학교 자동차공학과) ;
  • 박영섭 (한양대학교 대학원 자동차공학과) ;
  • 이강윤 (한양대학교 자동차공학과) ;
  • 선우명호 (한양대학교 자동차공학과) ;
  • 남기훈 (현대자동차 승용디젤엔진 개발실) ;
  • 조성환 (현대자동차 승용디젤엔진 개발실)
  • Oh, Byoung-Gl (Department of Automotive Engineering, Graduate School, Hanyang University) ;
  • Lee, Min-Kwang (Department of Automotive Engineering, Hanyang University) ;
  • Park, Yeong-Seop (Department of Automotive Engineering, Graduate School, Hanyang University) ;
  • Lee, Kang-Yoon (Department of Automotive Engineering, Hanyang University) ;
  • SunWoo, Myoung-Ho (Department of Automotive Engineering, Hanyang University) ;
  • Nam, Ki-Hoon (Advanced Diesel Engine Development Team, Hyundai-Kia Motor Company) ;
  • Cho, Sung-Hwan (Advanced Diesel Engine Development Team, Hyundai-Kia Motor Company)
  • 투고 : 2010.03.22
  • 심사 : 2011.01.18
  • 발행 : 2011.09.01
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초록

In diesel engines, accurate EGR control is important due to its effect on nitrogen oxide and particulate matter emissions. Conventional EGR control system comprises a PI feedback controller for tracking target air mass flow and a feedforward controller for fast response. Physically, the EGR flow is affected by EGR valve lift and thermodynamic properties of the EGR path, such as pressures and temperatures. However, the conventional feedforward control output is indirectly derived from engine operating conditions, such as engine rotational speed and fuel injection quantity. Accordingly, the conventional feedforward control action counteracts the feedback controller in certain operating conditions. In order to improve this disadvantage, in this study, we proposed feedforward EGR control algorithm based on a physical model of the EGR system. The proposed EGR control strategy was validated with a 3.0 liter common rail direct injection diesel engine equipped with a DC motor type EGR valve.

키워드

참고문헌

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