Problems in event based engine control

Elbert Hendricks, Michael Jensen, Alain Marie Roger Chevalier, Thomas Vesterholm

    Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

    464 Downloads (Pure)


    Physically a four cycle spark ignition engine operates on the basis of four engine processes or events: intake, compression, ignition (or expansion) and exhaust. These events each occupy approximately 180° of crank angle. In conventional engine controllers, it is an accepted practice to sample the engine variables synchronously with these events (or submultiples of them). Such engine controllers are often called event-based systems. Unfortunately the main system noise (or disturbance) is also synchronous with the engine events: the engine pumping fluctuations. Since many electronic engine controllers are event sampled systems, the sampling frequency is thus also frequency locked to the main system disturbances. This creates a signal analysis problem which has, to the authors' knowledge, not been treated in detail in the literature. This paper concerns itself with the impact of this and related problems on accurate air/fuel ratio control of a spark ignition (SI) engine.
    Original languageEnglish
    Title of host publicationProceedings of the American Control Conference
    VolumeVolume 2
    Publication date1994
    ISBN (Print)07-80-31783-1
    Publication statusPublished - 1994
    Event1994 American Control Conference - Baltimore, MD, United States
    Duration: 29 Jun 19941 Jul 1994


    Conference1994 American Control Conference
    Country/TerritoryUnited States
    CityBaltimore, MD

    Bibliographical note

    Copyright: 1994 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE


    Dive into the research topics of 'Problems in event based engine control'. Together they form a unique fingerprint.

    Cite this