A vehicle controller estimates the turbine torque based on measured impeller and turbine speeds. Then, it estimates the tractive force based on gear ratios, tire sizes, and estimates of parasitic losses. The controller estimates the current grade based on a difference between an acceleration sensor reading and the derivative of a measured vehicle speed. Then, it estimates the current vehicle weight based on the tractive force, the acceleration rate, and the grade. The controller adjust a target following distance of a cruise control system based on the estimate of the weight and the grade. The cruise control system adjusts power to maintain a measured following distance equal to the target following distance.


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    Title :

    VEHICLE WITH MASS AND GRADE RESPONSIVE CRUISE CONTROL


    Contributors:

    Publication date :

    2015-09-17


    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



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