Importance

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Abstract

A method for operation of a drivetrain, comprising an automatic transmission and a drive motor, for improving the shift speed of successive upshifts or downshifts such that during a first shift at least one shift element required for a successive shift is prepared such that when a synchronization point is reached, the successive shift is immediately carried out. Two successive shifts can be carried out as overlapping single shifts by actuating three shift elements such that: a) during the first shift a first shift element is either disengaged or engaged while the second shift element is either engaged or disengaged; b) during the successive shift a second shift element is prepared for disengagement or engagement while the third shift element is prepared for engagement or disengagement, the actuation of the second shift element, when transiting from the first to the successive shift, takes place by a desired selection.

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First Claim