Data driven feedforward transient fueling controller identification for spark ignition engines

Matthew Franchek, Jackie Mohrfeld, Andrew Osburn

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Abstract

    Presented in this paper is a feedforward fueling controller identification methodology for the transient fueling control of spark ignition (SI) engines. The proposed transient feedforward controller is identified and executed in the crank angle domain, and operates in tandem with a steady state fueling controller. The hypothesis is that the feedforward fueling control of SI engines can be separated into steady state and transient phenomena, and that the majority of the nonlinear behavior associated with engine fueling can be captured with nonlinear steady state compensation. The proposed transient controller identification process is built from standard nonparametric identification techniques using spectral density functions where crank angle serves as the independent variable. Two separate system identification problems are solved to identify the air path dynamics and the fuel path dynamics. The transient feedforward controller is then calculated as the ratio of the air path-over-the fuel path dynamics so that the fuel path dynamics match the air path dynamics. Consequently fueling is coordinated with the fresh air charge during transient conditions. It will be shown that a linear transient feedforward-fueling controller operating in tandem with a nonlinear steady state fueling controller can achieve air-fuel ratio (AFR) regulation comparable to a production controller without the extensive controller calibration process. The engine used in this investigation is a 1999 Ford 4.6L V-8 fuel injected engine.

    Original languageEnglish (US)
    Title of host publicationProceedings of the ASME Dynamic Systems and Control Division 2005
    Pages289-296
    Number of pages8
    Edition1 PART A
    DOIs
    StatePublished - 2005
    Event2005 ASME International Mechanical Engineering Congress and Exposition, IMECE 2005 - Orlando, FL, United States
    Duration: Nov 5 2005Nov 11 2005

    Publication series

    NameAmerican Society of Mechanical Engineers, Dynamic Systems and Control Division (Publication) DSC
    Number1 PART A
    Volume74 DSC

    Other

    Other2005 ASME International Mechanical Engineering Congress and Exposition, IMECE 2005
    Country/TerritoryUnited States
    CityOrlando, FL
    Period11/5/0511/11/05

    ASJC Scopus subject areas

    • Mechanical Engineering
    • Software

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