A vehicle computer system controls downhill speed of a vehicle having a cruise control and an engine retarder. The system receives a request to increase engine retarder demand. In response, the system increases an engine retarder demand setting and, if cruise control is active, decreases a downhill speed control (DSC) cruise control offset. The engine retarder system may automatically activate to reduce the vehicle speed to a cruise control set speed plus the DSC cruise control offset. In an embodiment, the request to increase engine retarder demand is generated in response to operator input via an engine retarder demand input device (e.g., a steering-column-mounted control stalk). The system may also receive a request to decrease engine retarder demand in the engine retarder of the vehicle. In response, the system decreases the engine retarder demand setting and, if cruise control is active, increases the DSC cruise control offset.


    Access

    Download


    Export, share and cite



    Title :

    Downhill speed control target adaptation based on engine retarder demand


    Contributors:

    Publication date :

    2020-09-01


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES / F02D CONTROLLING COMBUSTION ENGINES , Steuern oder Regeln von Brennkraftmaschinen



    DOWNHILL SPEED CONTROL TARGET ADAPTATION BASED ON ENGINE RETARDER DEMAND

    SPEER JASON / VIRDEN JOSEPH W | European Patent Office | 2020

    Free access

    DOWNHILL SPEED CONTROL TARGET ADAPTATION BASED ON ENGINE RETARDER DEMAND

    SPEER JASON / VIRDEN JOSEPH WRAY | European Patent Office | 2022

    Free access

    DOWNHILL SPEED CONTROL TARGET ADAPTATION BASED ON ENGINE RETARDER DEMAND

    SPEER JASON / VIRDEN JOSEPH WRAY | European Patent Office | 2020

    Free access

    Strategy research on vehicle constant speed downhill control based on hydraulic retarder

    Chen, Xiao-yu / Liu, Xiao-yong / Zhu, Zheng-long et al. | IEEE | 2017


    Downhill retarder control device of dual-power gearbox

    GAN YAN / ZHANG ZHANPING / ZHAO JIUZENG et al. | European Patent Office | 2021

    Free access