A method of decoupling output torque from input torque during engine speed control of a hybrid powertrain for a vehicle comprises determining, via a controller, a virtual output torque required on an output member of a multi-mode transmission given a virtual input torque commanded on an input member of the multi-mode transmission for engine speed control in a selected mode of the multi-mode transmission such that rotational speed of the output member is unchanged to prevent undesired torque variation at the output member. The controller determines the virtual output torque via a first stored transfer function relating virtual output torque to virtual input torque based on modeled physical dynamics of the vehicle driveline for the selected mode of the multi-mode transmission. A hybrid powertrain includes an engine and a hybrid transmission, and a controller that controls the hybrid transmission according to the method.


    Access

    Download


    Export, share and cite



    Title :

    Method of decoupling input and output torque for engine speed control and hybrid powertrain utilizing same


    Contributors:
    YE SHAOCHUN (author)

    Publication date :

    2019-11-19


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B60W CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION , Gemeinsame Steuerung oder Regelung von Fahrzeug-Unteraggregaten verschiedenen Typs oder verschiedener Funktion




    Hybrid powertrain input torque management

    LEHMEN ALLEN J / XIA HOUCHUN / HANSEN R ANTHONY | European Patent Office | 2015

    Free access

    Hybrid electric powertrain with engine torque-smoothing transition control logic

    LEE CHUNHAO J / SHIDORE NEERAJ S / BUCKNOR NORMAN K et al. | European Patent Office | 2021

    Free access

    HYBRID ELECTRIC POWERTRAIN WITH ENGINE TORQUE-SMOOTHING TRANSITION CONTROL LOGIC

    LEE CHUNHAO J / SHIDORE NEERAJ S / BUCKNOR NORMAN K et al. | European Patent Office | 2021

    Free access

    HYBRID POWERTRAIN SPEED CONTROL

    LIANG WEI / JOHRI RAJIT / WANG XIAOYONG et al. | European Patent Office | 2016

    Free access