点燃式发动机瞬态空燃比自适应控制策略研究 study on self-adaption control strategy of transient air-fuel ratio of spark ignition engines.pdfVIP
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点燃式发动机瞬态空燃比自适应控制策略研究 study on self-adaption control strategy of transient air-fuel ratio of spark ignition engines
第42卷第3期 中国测试 Vol.42 No.3
2016年3月 CHINA MEASUREMENT TEST March,2016
doi院10.11857/j.issn.1674-5124.2016.03.025
点燃式发动机瞬态空燃比自适应控制策略研究
1 1 2 1
严浩铭 袁 孙仁云 袁 陈德刚 袁 汪科任
(1.西华大学交通与汽车工程学院,四川 成都 610039;2.成都安美科燃气技术有限公司,四川 成都 610039)
摘 要院阐述发动机稳态工况闭环控制的特点袁分析导致瞬态空燃比匹配不当的原因袁设计空燃比加性误差与乘性误
差模型袁提出自适应补偿的方案袁最后基于Matlab/Simunlink建立空燃比控制系统模型并验证自适应补偿控制策略遥
结果表明院当出现误差时袁自动改变空燃比修正值调整燃料喷射量袁空燃比波动约1%遥
关键词院发动机;瞬态;空燃比;自适应
文献标志码院A 文章编号院1674-5124渊2016冤03-0109-04
Study on self-adaption control strategy of transient air-fuel ratio of
spark ignition engines
1 1 2 1
YAN Haoming ,SUN Renyun ,CHEN Degang ,WANG Keren
(1.School of Transportation and Automotive Engineering,Xihua University,Chengdu 610039,China;
2.Amico Gas Technology Co.,Ltd.,Chengdu 610039,China)
Abstract: The closed-loop control characteristics of engines under steady-state operating conditions
are explained in this paper. First,the causes of mismatched transient air-fuel ratio are
investigated. Second,an additive error model and a multiplicative error model of air-fuel ratio is
designed. Third,an adaptive compensation scheme is proposed accordingly. According to Matlab/
Simulink,a simulation model of air-fuel ratio control system is established and the adaptive
compensation scheme is verified. The results show that when an error occurs,the fluctuation in
air-fuel ratio is lower than 1% after the modified value of air-fuel ratio correction value is
automatically changed to adjust fuel injection.
Keywords: engine; transient; air
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