Journal of the Korea Academia-Industrial cooperation Society (한국산학기술학회논문지)

The Korea Academia-Industrial cooperation Society (한국산학기술학회)
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The Characteristic Analysis of EGR Valve Motor

EGR 밸브 용 모터 특성 분석

  • Heo, Jun-Ho (Department of Mechanical Engineering, Keimyung University) ;
  • Lee, Seon-Bong (Division of Mechanical and Automotive Engineering, Keimyung University)
  • 허준호 (계명대학교 일반대학원 기계공학과) ;
  • 이선봉 (계명대학교 기계자동차공학과)
  • Received : 2015.11.11
  • Accepted : 2016.02.04
  • Published : 2016.02.29
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Abstract

An increase in EGR rate can reduce NOx emissions. On the other hand, an excessive EGR rate is a major cause of incomplete combustion. Precise position control of the EGR valve that is optimized for the operating conditions of the engine should be supported to meet the strict emission regulations. Accordingly, this study performed mathematical modeling and control theory for characteristic analysis of an EGR valve motor. Because it is a step for controlling the position of the EGR valve motor using the Microchip development tool, this study analyzed the characteristics of the motor for each opening and closing section according to the input value of the duty ratio of PWM (Pulse Width Modulation).

EGR율이 증가할수록 $NO_X$ 저감에는 효과적이나, 과도한 EGR율은 오히려 불완전 연소의 주원인이 된다. 엄격한 배기규제를 만족하기 위해서는 엔진의 운행 조건에 최적화된 정밀한 EGR 밸브의 위치 제어가 뒷받침 되어야 한다. 따라서 본 연구에서는 EGR 밸브 용 모터 특성 분석을 위해 수학적 모델링과 제어 이론에 대해 연구하고, 마이크로칩 개발 툴을 이용하여 EGR 밸브용 모터의 위치를 제어하기 위한 단계로서 PWM(Pulse Width Modulation)의 듀티(duty)비의 입력 값에 따른 밸브 위치를 측정하여 개폐 구간 별 EGR 밸브 모터 특성을 분석하였다.

Keywords

References

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