Vehicle having speed / cruise control and traction control systems to cause a vehicle to operate according to a target speed value, reduces a wheel speed (wheel slip) if it exceeds an intervention threshold value, where intervention threshold is dependent on / a function of the target speed. Vehicle reference speed may be an estimate of speed over ground, and speed / slip intervention threshold may depend on the lower of target speed and vehicle reference speed. Intervention may occur when speed control is inactive where intervention threshold is set to a first value dependent on vehicle reference speed. Intervention threshold may be wheel speed relative to stationary, or wheel speed relative to vehicle reference speed, and may be calculated as vehicle target speed multiplied by an intervention factor. Instant vehicle speed may be a mean speed of driving wheels, or the slowest turning wheel. Control may be through brake or drive torque application. Method of use also included.


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    Titel :

    Vehicle speed control system and method


    Beteiligte:
    FAIRGRIEVE ANDREW (Autor:in) / KELLY JAMES (Autor:in)

    Erscheinungsdatum :

    2015-08-26


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Englisch


    Klassifikation :

    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 / B60T Bremsanlagen für Fahrzeuge oder Teile davon , VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF



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