| 摘要 |
The present invention provides a method and a system for the control of a time derivative T q fw for a dynamic torque, which is provided to an output shaft from an engine in a vehicle driven with a driving gear activated in a gearbox in the vehicle. The method comprises a determination of a current speed difference ” É pres between a first end of the powertrain in a vehicle, rotating with an engine speed É e , and a second end of the powertrain, rotating with a rotational speed of at least one driving wheel É wheel in the vehicle. The method also comprises a control of the engine speed É e , which is carried out in such a manner that the current speed difference ” É pres is controlled towards a desired speed difference ” É des between the engine speed É e and the rotational speed of the at least one driving wheel É wheel . The method also comprises a control of the clutch towards a clutch position C closed , for which a rotational speed of an input shaft É gear_in in the gearbox and the engine speed É e are substantially equal. The control of the clutch is carried out in such a manner that such clutch position C closed is achieved substantially when the current speed difference ” É pres reaches the desired speed difference ” É des . |
