Journal of the Korean Society of Manufacturing Process Engineers (한국기계가공학회지)

The Korean Society of Manufacturing Process Engineers (한국기계가공학회)
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A Study of on a Natural Gas Engine Modeling for Mixture formation and Intake Process

혼합기 형성-유입과정을 고려한 천연가스엔진 모델링 연구

  • 심한섭 (진주산업대학교 자동차공학과)
  • Received : 2009.05.25
  • Accepted : 2009.09.16
  • Published : 2009.09.30
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Abstract

Development of a dynamic engine model is essential to predict and analyze of dynamic characteristics from a natural gas engine. Reducing the harmful exhaust emissions can be accomplished by a precise air-fuel ratio control. In this paper, the dynamic engine model was proposed and included mixture formation and intake process because the dynamic characteristics can be affected by the mixture components such as an air and a gaseous fuel. The air mass flow, the partial pressure ratio, and the gas constant are changed by variations of the components in the mixture formation and intake process. The dynamic engine model is applied to the natural gas engine for validation test. Experimental results show that the dynamic engine model is effective to predict the dynamic characteristics of the natural gas engine.

Keywords

Acknowledgement

Supported by : 한국학술진흥재단

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