As engines are equipped with an increased number of control actuators to meet fuel economy targets they become more difficult to control and calibrate. The large number of control actuators encourages the investigation of physics-based control strategies to reduce calibration time and complexity. Of particular interest is spark timing control and calibration since it has a significant influence on engine efficiency, emissions, vibration and durability. Spark timing determination to achieve a desired combustion phasing is currently an empirical process that occurs during the calibration phase of engine development. This process utilizes a large number of stored surfaces and corrections to account for the wide range of operating environments and conditions that a given engine will experience. An obstacle to realizing feedforward physics-based combustion phasing control is the requirement for an accurate and fast combustion model. In this research, a quasi-dimensional turbulent flame entrainment combustion model for the purpose of real-time combustion phasing prediction is proposed. The proposed algorithm utilizes existing engine sensors and calculates combustion phasing from a physics based model in real-time. Transient engine dynamometer results using a rapid-prototype engine controller demonstrate a prediction accuracy for the location of fifty percent mass fraction burned (CA50) within 3.6 crank angle degrees.


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    Title :

    A Real-Time Model for Spark Ignition Engine Combustion Phasing Prediction


    Additional title:

    Sae Int. J. Engines


    Contributors:
    Dourra, Hussein (author) / Prucka, Michael (author) / Zhu, Qilun (author) / Prucka, Robert (author) / Wang, Shu (author)

    Conference:

    SAE 2016 World Congress and Exhibition ; 2016


    Published in:

    Publication date :

    2016-04-05


    Size :

    11 pages




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




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    Dourra, Hussein / Prucka, Michael / Zhu, Qilun et al. | SAE Technical Papers | 2016


    Model-Based Optimal Combustion Phasing Control Strategy for Spark Ignition Engines

    Zhu, Qilun / Prucka, Robert / Wang, Shu et al. | British Library Conference Proceedings | 2016


    The Impact of Combustion Phasing on Cycle-by-Cycle Performance of a Spark Ignition Engine

    Stevens, S. P. / Shayler, P. J. / Ma, T. H. et al. | British Library Conference Proceedings | 1995


    The Impact of Combustion Phasing on Cycle-by-Cycle Performance of a Spark Ignition Engine

    Shayler, P. J. / Stevens, S. P. / Ma, T. H. | SAE Technical Papers | 1995