Method for operating an automatic transmission

摘要

In a method for operating an automatic transmission having multiple frictional-locking shifting elements and at least one positive-locking shifting element, for the representation of a transmission ratio stage, at least three shifting elements are closed. For a shifting process between two specified transmission ratio stages, at least two shifting elements are opened and at least two shifting elements, including at least one positive-locking shifting element and at least one frictional-locking shifting element, are closed. In the chronological sequence of the shifting process, the closing of the positive-locking shifting element takes place only after all frictional-locking shifting elements are closed.

主权项

1. A method for operating an automatic transmission having multiple shifting elements, including frictional-locking shifting elements and at least one positive-locking shifting element, and wherein for transmission ratios of the automatic transmission, at least three of the shifting elements are closed, the method comprising:
for a shifting process of specified ones of the transmission ratios that is less than all of the transmission ratios from a first transmission stage to a second transmission stage, opening two shifting elements and closing two other shifting elements including one of the positive-locking shifting elements; and wherein the closing of the positive-locking shifting element takes place only after all frictional-locking shifting elements are closed that are needed to be closed for the second transmission stage.