吉林大学学报(工学版) ›› 2017, Vol. 47 ›› Issue (4): 1040-1047.doi: 10.13229/j.cnki.jdxbgxb201704005

• Orginal Article • Previous Articles     Next Articles

Aging simulation method for EFI engine oxygen sensor based on first order inertial filter algorithm

WANG Yong1, 2, SUN Dong-ye2, QI Zheng-gang3   

  1. 1.State Key Laboratory of Mechanical Transmission,Chongqing University,Chongqing 400030,China;
    2.School of Automotive Engineering,Chongqing College of Electronic Engineering,Chongqing 401331,China;
    3.Product Research and Development Department, Chongqing Chang'an Visteon Engine Control System Company,Chongqing 401122,China
  • Received:2016-01-30 Online:2017-07-20 Published:2017-07-20

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Abstract: Under the premise of the existing PCM hardware structure not be changed, in order to save hardware cost in OBD development process, and to improve aging stability, a new method of oxygen sensor aging with software algorithm is proposed to replace traditional aging method with specialized hardware simulation device. The aging algorithm structure is built, and specific algorithm is designed to identify signal switching edge. Aging intervention and exit times are chosen rationally, and first order inertial filter algorithm is used in aging process. The test results show that the proposed aging algorithm can produce almost the same aged signal as specialized hardware device, satisfying China V OBD regulation requirement.

Key words: vehicle engineering, oxygen sensor, aging simulation, inertial filter, on board diagnosis(OBD) system

CLC Number: 

  • U41
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