한국자동차공학회논문집 (Transactions of the Korean Society of Automotive Engineers)

  • 제11권1호
  • /
  • Pages.7-17
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  • 2003
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  • 1225-6382(pISSN)
  • /
  • 2234-0149(eISSN)
한국자동차공학회 (The Korean Society of Automotive Engineers)
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기체연료엔진의 제어시스템 설계를 위한 엔진 모델링 및 검증

Engine Modeling and Validation for Control System Design of a Gaseous-fuel Engine

  • 발행 : 2003.01.01
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초록

Highly accurate control of an air-fuel ratio is very important to reduce exhaust gas emissions of gaseous-fuel engines. In order to achieve this purpose, a precise engine model is required to estimate engine performance from the engine design process which is applied to the design of an engine controller. Engine dynamics are considered to develop a dynamic engine model of a gaseous-fuel engine. An effective air mass ratio is proposed to study variations of the engine dynamics according to the water vapor and the gaseous-fuel in the mixture. The dynamic engine model is validated with the LPG engine under steady and transient operating conditions. The experimental results in the LPG gaseous-fuel engine show that the estimation of the air flow and the air-fuel ratio based upon the effective air mass ratio is more accurate than that of a normal engine model.

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참고문헌

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