Due to the high cost of torque sensors, a calculation model of transient torque is required for real-time coordinating control purpose, especially in hybrid electric powertrains. This paper presents a feedforward calculation method based on mean value model of turbocharged non-EGR diesel engines. A fitting variable called fuel coefficient is defined in an affine relation between brake torque and fuel mass. The fitting of fuel coefficient is simplified to depend only on three variables (engine speed, boost pressure, injected fuel mass). And a two-layer feedforward neural network is utilized to fit the experimental data. The model is validated by load response test and ETC (European Transient Cycle) transient test. The RMSE (root mean square error) of the brake torque is less than 3%.


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    Title :

    A Control Oriented Simplified Transient Torque Model of Turbocharged Diesel Engines


    Additional title:

    Sae Technical Papers


    Contributors:
    Yang, Fuyuan (author) / Li, Jianqiu (author) / Ouyang, Minggao (author) / Tian, Shuo (author)

    Conference:

    2008 SAE International Powertrains, Fuels and Lubricants Congress ; 2008



    Publication date :

    2008-06-23




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




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