| 摘要 |
The present invention relates to a method and a system arranged for the control of an engine speed É e for an engine in connection with play in a powertrain in a vehicle. According to the present invention, a current rotational speed difference ”É pres is determined between a first end of the powertrain, rotating with a first rotational speed É 1 , and a second end of the powertrain, rotating with a second rotational speed É 2 . Furthermore, a rotational speed difference ”É after is determined, which has to prevail between the first end and the second end after the play. The rotational speed difference ”É after after the play is determined based on a spring constant k related to a torsional compliance in the powertrain. The control of the engine speed É e for the engine is then implemented across a time period T gl a pp , during which the play in the powertrain prevails. This control is based on the determined current rotational speed difference ”É pres and the determined rotational speed difference ”É after after the play. |
