Journal of South China University of Technology (Natural Science Edition) ›› 2011, Vol. 39 ›› Issue (1): 152-156.doi: 10.3969/j.issn.1000-565X.2011.01.028

• Electronics, Communication & Automation Technology • Previous Articles    

Analysis of Combustion Parameters of LPG Engine Based on Quasi-Dimensional Two-Zone Combustion Model

Lu Guo-xiang Li Li-fu   

  1. South China university of technology, mechanical and automotive engineering school, guangdong guangzhou 510640
  • Received:2010-09-01 Revised:2010-10-17 Online:2011-01-25 Published:2010-12-01
  • Contact: 陆国祥(1984一)，男，博士生，主要从事代用燃料汽车电控理论研究 E-mail:harry_lu2006@yahoo.com.cn
  • About author:陆国祥(1984一)，男，博士生，主要从事代用燃料汽车电控理论研究
  • Supported by:

    广州市科技攻关项目(320一D8416)；汽车动态模拟国家重点实验室开放基金资助项目(20071107)；机械传动国家重点实验室开放基金资助项目(1200801 1)

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Abstract:

In order to improve the dynamic performances of liquefied petroleum gas（LPG） engine and reveal the relationship between the thermal energy and the chemical energy as well as the mechanical energy during combustion,the quasi-dimensional two-zone combustion mechanism is analyzed,with a certain LPG engine as the research objective.Then,a quasi-dimensional two-zone combustion model is put forward,and the curves of crank angle versus cylinder pressure and burnt mixture temperature are obtained by simulation.Finally,the curves are compared with the experimental ones,and the error is found to be only less than 5%.Thus,it is concluded that the proposed combustion model well describes the variations of cylinder pressure and burnt mixture temperature of LPG engine with crank angle.

Key words: liquefied petroleum gas engine, combustion mechanism, cylinder pressure, burned mixture temperature