Presented are hybrid electric vehicle (HEV) powertrains and control logic for optimized regenerative braking (regen), methods for making/using such systems, and HEVs with increased regen through reduced engine and transmission friction. A method of operating an HEV includes determining if an REV operating state or fault prevents engagement of a regen control operation and, if not, responsively determining if a torque request for the REV's powertrain is less than a road load on the HEV. The regen control operation is executed responsive to the torque request being less than the road load. The regen control operation includes the power transmission drivingly disconnecting the engine from the road wheels, and the engine operating at a target engine speed. A negative torque offset to maintain a vehicle deceleration rate after disconnecting the engine from the road wheels is calculated; the traction motor outputs a negative torque based on this negative torque offset.


    Access

    Download


    Export, share and cite



    Title :

    Optimized regenerative braking for hybrid electric vehicle (HEV) powertrain configurations


    Contributors:

    Publication date :

    2022-01-25


    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 / B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen



    EXTENDING HYBRID ELECTRIC VEHICLE REGENERATIVE BRAKING

    NEDOREZOV FELIX / JIANG HONG / DAI ZHENGYU et al. | European Patent Office | 2015

    Free access

    Extending hybrid electric vehicle regenerative braking

    NEDOREZOV FELIX / JIANG HONG / DAI ZHENGYU et al. | European Patent Office | 2017

    Free access

    Extending Hybrid Electric Vehicle Regenerative Braking

    MARK S YAMAZAKI / DANIEL S COLVIN / HONG JIANG et al. | European Patent Office | 2015

    Free access

    Hybrid electric vehicle regenerative braking control method optimized by particle swarm optimization

    GAO AIYUN / FAN WEIFENG / PENG BO et al. | European Patent Office | 2023

    Free access

    Gearshift Schedule of P2 Hybrid Powertrain during Regenerative Braking Process

    Wu, Sihao / Dong, Peng / Sheng, Jiadong et al. | IEEE | 2021