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    A WHEEL SLIP BOOST FUNCTION FOR A HEAVY-DUTY VEHICLE
    1.
    发明公开
    A WHEEL SLIP BOOST FUNCTION FOR A HEAVY-DUTY VEHICLE 审中-公开

    公开(公告)号：EP4166368A1

    公开(公告)日：2023-04-19

    申请号：EP21203148.8

    申请日：2021-10-18

    申请人： VOLVO TRUCK CORPORATION

    发明人： HENDERSON, Leon ,  SALIF, Ramadan ,  BALIGA, Nikhil

    IPC分类号： B60K28/16 ,  B60W50/00

    摘要： A computer implemented method for controlling at least one driven and/or braked wheel (102) of a heavy-duty vehicle (100), the method comprising obtaining a motion request (a req , F x ) indicative of a desired longitudinal acceleration and/or longitudinal force associated with the vehicle (100), and configuring a wheel slip limit value (λ lim ) indicative of a maximum allowable wheel slip by the at least one driven and/or braked wheel (102) at a nominal value, and increasing the wheel slip limit value (λ lim ) from the nominal value to a boost wheel slip value in response to detecting a boost signal (361), as well as controlling the at least one driven and/or braked wheel (102) in dependence of the motion request (a req , F x ) and subject to the wheel slip limit value (λ lim ).

    A METHOD FOR CONTROLLING PROPULSION OF A HEAVY-DUTY VEHICLE
    7.
    发明公开
    A METHOD FOR CONTROLLING PROPULSION OF A HEAVY-DUTY VEHICLE 审中-公开

    公开(公告)号：EP4108529A1

    公开(公告)日：2022-12-28

    申请号：EP21181576.6

    申请日：2021-06-24

    申请人： VOLVO TRUCK CORPORATION

    发明人： HENDERSON, Leon ,  SALIF, Ramadan

    IPC分类号： B60T8/175 ,  B60W30/18

    摘要： A method for controlling propulsion of a heavy-duty vehicle (100, 110, 120), where the heavy-duty vehicle (100, 110, 120) comprises a drive shaft connected to a differential drive arrangement arranged to evenly distribute torque between a left wheel and a right wheel of a driven axle, the method comprising
    configuring a nominal shaft slip (λ 0 ) of the drive shaft in dependence of a desired longitudinal wheel force (F x ) to be generated by the driven axle, wherein a shaft slip (λ) is indicative of a difference between a current vehicle velocity ( v x ) and a vehicle velocity corresponding to the rotation speed ( ω 0) of the drive shaft,
    obtaining a rotation speed ( ω 1) of the left wheel and a rotation speed ( ω 2) of the right wheel, as function of a current shaft slip (λ) of the driven axle,
    estimating a peak shaft slip value (λ max ) associated with an open differential peak longitudinal force (F x,max ) of the driven axle, based on the current shaft slip (λ) and on the corresponding obtained speeds ( ω 1 , ω 2 ) of the left and right wheels, and controlling propulsion of the heavy-duty vehicle unit (100, 110, 120) by setting the current shaft slip (λ) of the drive shaft based on the configured nominal shaft slip (λ 0 ) adjusted in dependence of the estimated peak shaft slip value (λ max ).