吉林大学学报(工学版) ›› 2012, Vol. 42 ›› Issue (增刊1): 151-155.

• 论文 • 上一篇    下一篇

基于EGR策略的重型柴油机瞬态空燃比优化控制

赵靖华1,2, 洪伟1, 冯枫3, 解方喜1   

  1. 1. 吉林大学 汽车仿真与控制国家重点实验室,长春 130022;
    2. 吉林师范学院 计算机学院,吉林 四平 136000;
    3. 空军航空大学 科研部,长春 130022
  • 收稿日期:2012-04-23 出版日期:2012-09-01 发布日期:2012-09-01
  • 通讯作者: 洪伟(1963-),男,教授.研究方向:内燃机工作过程控制及优化.E-mail:hongw@jlu.edu.cn E-mail:hongw@jlu.edu.cn
  • 作者简介:赵靖华(1980-),男,博士研究生.研究方向:内燃机工作过程控制及优化.E-mail:zhaojh08@mails.jlu.edu.cn
  • 基金资助:

    国家自然科学基金项目(50976046).

Transient air-to-fuel ratio control on heavy duty diesel engine based on EGR technology

ZHAO Jing-hua1,2, HONG Wei1, FENG Feng3, XIE Fang-xi1   

  1. 1. State Key Laboratory of Automotive Simulation and Control, Jilin University, Changchun 130022, China;
    2. College of Computer, Jilin Normal University, Siping 136000, China;
    3. Department of Science and Research, Aviation University of Air Force, Changchun 130022, China
  • Received:2012-04-23 Online:2012-09-01 Published:2012-09-01

摘要: 针对某些重型柴油机在进气中冷后加入足量的EGR较为困难,瞬态工况下EGR优化后的发动机排放性能恶化的问题,从精确控制EGR流量、优化空燃比、降低排放的目的出发,在一台CY6D180高压共轨重型柴油机上进行了大量的试验研究。基于排放优化原则,研究了利用节气阀配合EGR阀引入EGR后的发动机稳态特性,提出了一种两阀联合关开优化发动机瞬变排放性能的策略。进行了瞬态工况条件下的对比试验验证。结果表明:本文设计的瞬态空燃比控制方法在保证烟度排放值在3.5%限度内的情况下,NOx的排放量也不超过稳态工况点的10%。

关键词: 动力机械工程, 重型柴油机, 废气再循环, 瞬态过程控制, 空燃比

Abstract: Aiming at the problem that adding sufficient quantities of EGR is difficult for heavy duty diesel engine after the intercooler of intake and emissions is deteriorated in transient operating conditions, a lot of experiments were carried out on a CY6D180 high pressure common rail diesel engine by controlling EGR flow accurately to optimize air-to-fuel ratio,so improving the emissions performance of engine. Based on emissions optimization principle, the steady-state characteristics of engine was studied under the condition of adding EGR after the EGR valve introducted by throttle. A new strategy of two valve turn off and turn on to optimize the engine transient emissions was proposed. The emissions effects under transient operating conditions were verified by experiments,the results show that the proposed strategy can reduce the smoke emission lower than 3.5% as well as NOx emission lower than 10% steady-state condition point.

Key words: power machinery and engineering, heavy duty diesel engine, exhaust gas recirculation, transient process control, air-to-fuel ratio

中图分类号: 

  • TK411
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