Patent ID: 9410621
Filing Date: 2016-08-09
CPC Classification: F16H

Claim Text:
1. A method for operating an automatic transmission in a limp mode, the automatic transmission having a plurality of non-positive shifting elements and at least one positive shifting element, the method comprising; actuating a first one of the plurality of non-positive shifting elements to an engaged configuration; actuating a second one of the plurality of non-positive shifting elements to the engaged configuration, said step of actuating the second one of the plurality of non-positive shifting elements being initiated after a start of said step of actuating the first one of the plurality of non-positive shifting elements, a first one of the at least one positive shifting element being substantially synchronized after said step of actuating the second one of the plurality of non-positive shifting elements; commanding the first one of the at least one positive shifting element to actuate from a disengaged configuration to the engaged configuration after said step of actuating the second one of the plurality of non-positive shifting elements; opening the first one and the second one of the plurality of non-positive shifting elements after said step of commanding; and actuating a third one of the plurality of non-positive shifting elements to the engaged configuration after said step of commanding, wherein a time interval, Δi, is provided between a start step of actuating the third one of the plurality of non-positive shifting elements and step of commanding, the first one of the at least positive shifting element actuating from the disengaged configuration to the engaged configuration during the time interval Δi.