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Intake Air Mass Observer Design Based on Extended Kalman Filter for Air-Fuel Ratio Control on SI Engine

Author

Listed:
  • Lei Meng

    (School of Automation, Wuhan University of Technology, Wuhan 430070, China)

  • Jie Luo

    (School of Automation, Wuhan University of Technology, Wuhan 430070, China)

  • Xu Yang

    (School of Automation, Wuhan University of Technology, Wuhan 430070, China)

  • Chunnian Zeng

    (School of Automation, Wuhan University of Technology, Wuhan 430070, China)

Abstract

Air-fuel ratio (AFR) control is important for the exhaust emission reduction while using the three-way catalytic converter in the spark ignition (SI) engine. However, the transient cylinder air mass is unable to acquire by sensors directly and it may limit the accuracy of AFR control. The complex engine dynamics and working conditions make the intake air estimation a challenge work. In this paper, a novelty design of intake air observer is investigated for the port-injected SI engine. The intake air dynamical modeling and the parameter fitting have been carried out in detail. Extended Kalman Filter (EKF) has been used to optimize the instantaneous cylinder charge estimation and minimize the effort of pump gas fluctuation, random noise, and measurement noise. The experiment validation has been conducted to verify the effectiveness of the proposed method.

Suggested Citation

  • Lei Meng & Jie Luo & Xu Yang & Chunnian Zeng, 2019. "Intake Air Mass Observer Design Based on Extended Kalman Filter for Air-Fuel Ratio Control on SI Engine," Energies, MDPI, vol. 12(18), pages 1-12, September.
    • Handle: RePEc:gam:jeners:v:12:y:2019:i:18:p:3444-:d:264860
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    References listed on IDEAS

    as
    1. Lei Meng & Xiaofeng Wang & Chunnian Zeng & Jie Luo, 2019. "Adaptive Air-Fuel Ratio Regulation for Port-Injected Spark-Ignited Engines Based on a Generalized Predictive Control Method," Energies, MDPI, vol. 12(1), pages 1-19, January.
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