Mercedes-benz Aktiengesellschaft

Rainer Wuest

Gerhard Wagner

Friedo Tinschert

In an arrangement for the cyclic adaptation of a characteristic for the changes in an automatic gearbox, a gear-change strategy which determines correction values by an algorithm that correlates external influencing variables and by a process involving evaluation of measured actual values of the influencing variables is used to adapt the characteristic both in the direction of the coordinate indicating a parameter dependent on the speed of travel and in the direction of the coordinate indicating a parameter associated with the engine torque. The process of adaptation is performed as a function of respectively associated correction values.

Process for the cyclic adaptation of a characteristic for gear-changing

In an arrangement and in a method for controlling an automatic shift device of a gear-change transmission, gear shifts which are initiated by the driver via the selector device and which would result in inadmissible engine speeds are prevented and it only becomes possible to permit them again via stored shift-line characteristic diagrams.

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Stuttgart, Germany

Rainer Wuest