Inventors:
George A. Willford - Waterville OH
Kurt R. Baer - Toledo OH
John M. Loeffler - Toledo OH
Dennis D. Schwaiger - Whitmore Lake MI
Assignee:
Dana Corporation - Toledo OH
International Classification:
F16H 6100
Abstract:
A transmission includes a plurality of shift rails, each of which is axially movable forwardly and rearwardly from a center neutral position to respective gear engaging positions. The lower shift rails are provided for manual shifting among the lower gear ratios of the transmission. The highest shift rail is provided for selective manual or automatic shifting among the highest two gear ratios of the transmission. An idler rail is disposed adjacent to the highest shift rail. For manual shifting, the idler rail is connected to the highest shift rail, and a manually operable shift lever is used to move both the idler rail and the highest shift rail. For automatic shifting, the idler rail is disconnected from the highest shift rail, and an automatic shift member is moved into cooperation with the highest shift rail. Rotation of the automatic shift shaft causes corresponding movement of the automatic shift member. An electronic controller is provided for controlling the automatic shifting of the transmission in response to sensed operating conditions of the vehicle.