| 摘要 |
The invention relates to a method for preventing, in a vehicle transmission coacting with a system for automatic gear selection, the selection of an operationally incorrect gear in the case where a signal representing a vehicle wheel rotational speed, e.g. during braking of the vehicle, does not constitute a correct representation of the vehicle speed. There is thus calculated in the system the wheel rotational speed change, which is compared with a predetermined retardation value. If the retardation limiting value is exceeded, an operative circuit or the like is activated for ensuring that an incorrect gear selection is prevented, e.g. by selecting neutral gear. For providing, particularly during pulsing braking of long duration a correct determination of when the wheel has returned to a stable state relative the substructure, the invention is distinguished in that the return to normal gear selection occurs only when the wheel speed has reached a given limiting value and the wheel speed change is less than a predetermined limiting value. |
