US 12,117,078 B2
Methods and systems for a transmission shift assembly
Travis J. Miller, Austin, TX (US); Michael D. Cook, Holland, OH (US); Jordan M. Houser, Sylvania, OH (US); George A. Willford, Waterville, OH (US); and Mark A. Davis, Opelika, AL (US)
Assigned to DANA HEAVY VEHICLE SYSTEMS GROUP, LLC, Maumee, OH (US)
Filed by Dana Heavy Vehicle Systems Group, LLC, Maumee, OH (US)
Filed on Mar. 17, 2023, as Appl. No. 18/185,983.
Application 18/185,983 is a division of application No. 16/983,896, filed on Aug. 3, 2020, granted, now 11,692,626.
Prior Publication US 2023/0228327 A1, Jul. 20, 2023
Int. Cl. F16H 63/18 (2006.01); F16H 63/30 (2006.01); F16H 63/32 (2006.01)
CPC F16H 63/18 (2013.01) [F16H 63/304 (2013.01); F16H 63/32 (2013.01); F16H 2063/3056 (2013.01); F16H 2063/321 (2013.01)] 5 Claims
OG exemplary drawing
 
1. A transmission for a vehicle, comprising:
a first barrel cam including a first cam track;
a second barrel cam arranged coaxially with the first barrel cam and including a second cam track;
a first motor configured to drive the first barrel cam;
a second motor configured to drive the second barrel cam independent of the first barrel cam;
a first shift fork including a first following pin seated within the first cam track;
a second shift fork including a second following pin seated within the second cam track;
a transmission input shaft including a first gear, a second gear, and a third gear; and
a controller with computer readable instructions stored on non-transitory memory that, when executed, cause the controller to:
responsive to determination of a skip shift condition, control a rotational position of the first barrel cam via the first motor to disengage one gear; and
control a rotational position of the second barrel cam via the second motor to engage another gear that is not consecutive with the one gear, independent of the rotational position of the first barrel cam;
wherein the skip shift condition is a condition in which the controller commands the shift assembly to adjust the transmission from the one gear engagement to engagement of the other gear in a non-sequential order; and
wherein the steps of controlling the rotational position of the first barrel cam and the second barrel cam occur at an overlapping time.