Daimler Chrysler Ag

Mercedes-benz Aktiengesellschaft

Friedo Tinschert

Michael Salecker

Dittmar Wieland

Markus Heinzel

Rainer Wuest

Martin Grillenberger

A method for changing gear in an automated change-speed gearbox of a motor vehicle with an automated clutch arranged between an engine and the change-speed gearbox includes engaging the clutch up to a slip limit during a downshift from an original gear to a target gear to increase the rotational speed of an input shaft of the change-speed gearbox.

Automated change-speed gearbox and methods for changing gear in such a gearbox

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

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Ludwigsburg, Germany

Friedo Tinschert