The use of self-tuning control concepts applied to the adaptive optimization of spark ignition angles of an automotive engine is described. In particular, it is shown how the concepts of self-adaptive control theory can be modified to allow their use in a continuous updating of the spark-angle map as a function of load and speed. Used in this manner, the self-tuner can account for in-service changes in engine characteristics, changes due to variations of ambient and operational conditions. In addition, self-adaptation allows the spark-controller algorithm to tune itself, so that the factory-generated spark map is precisely matched to the exact nature of each individual engine. The basic theory of self-tuning optimizers (also known as extremum controllers) is outlined, and their performance features are discussed with particular reference to their implementation in adaptive spark-timing systems. It is shown that the self-tuning extremum controller can be made robust even when the signal-to-noise ratio is less than one.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Self-tuning optimization of spark ignition automotive engines


    Additional title:

    Selbstoptimierender Zündzeitpunkt von Verbrennungsmotoren


    Contributors:

    Published in:

    Publication date :

    1990


    Size :

    8 Seiten, 27 Quellen



    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English




    Downsizing of automotive spark ignition engines

    Bingham,J.F. / National Engineering Lab.,Glasgow,GB | Automotive engineering | 1990


    Spark ignition engines

    Maehlner, E. | Engineering Index Backfile | 1943


    Spark ignition engines versus compression ignition engines

    Clenci, A. / Dumitrescu, V. | British Library Conference Proceedings | 1999


    Re-optimization of spark ignition engines

    Stone,C.R. / Brunel Univ.,Uxbridge,GB | Automotive engineering | 1985


    Combustion Losses in Automotive Spark Ignition and Diesel Engines

    G. J. Mascetti / W. U. Roessler | NTIS | 1982