Journal of South China University of Technology (Natural Science Edition) ›› 2008, Vol. 36 ›› Issue (1): 89-93.

• Electronics, Communication & Automation Technology • Previous Articles     Next Articles

Cylinder-by-Cylinder Fuel-Injecting Model of LPG Engine Based on Vector Rotator Coordinate

Xiao Bing  Hu Jing  Luo Fei   

  1. School of Automation Science and Engineering, South China University of Technology, Guangzhou 510640, Guangdong, China
  • Received:2007-04-29 Revised:2007-10-01 Online:2008-01-25 Published:2008-01-25
  • Contact: 肖兵（1964-），男，博士，副研究员，主要从事发动机燃烧控制方面的研究． E-mail:aubxiao@scut．edu．cn.
  • About author:肖兵（1964-），男，博士，副研究员，主要从事发动机燃烧控制方面的研究．
  • Supported by:

    国家自然科学基金资助项目（60474042）;广东省自然科学基金资助项目（04020000）

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Abstract:

As the mean-value engine model can not express the differences between cylinders and the corresponding precision is not high enough to satisfy the strict emission laws, this paper presents a cylinder-by-cylinder fuel-injecting model based on the vector rotator coordinate by taking the single-fuel LPG engine as the object, and then proposes an equation to describe the fuel injection of the six independent cylinders of a 6102LPG engine in a fuel life cycle. Experimental results show that the proposed model can accurately estimate the fuel charge of each cylinder, and that the precision satisfies the application requirements well.

Key words: vector rotator coordinate, cylinder-by-cylinder control, fuel injection, control model, LPG engine