A controller for 104 for controlling torque generated by at least one traction motor (116a, 116b Fig.1B) of an electric or hybrid vehicle (100 fig.1A) before a vehicle launch, comprising: means to determine that torque demand increases while simultaneously at least one brake (111) of the vehicle is in an applied state; means to, in dependence on the determination, limit torque generation by the traction motor in response to torque demand; and means to remove the limit in dependence on release of the at least one brake. The limit may prevent an entry condition for a de-rate function for either the at least one motor or inverter to be achieved. Torque demand may be dependent on accelerator position (APD). The limit may be applied as part of a stall launch function of the vehicle. The output torque may be distributed unequally to the first and second motors. The limit may be sufficient to hold the vehicle stationary on an incline while also taking up slack in the driveline. Also claimed is a system, vehicle, method and computer program for controlling torque.


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    Title :

    Control of vehicle traction motor torque before stall launch



    Publication date :

    2019-08-28


    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 / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen



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