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US 11,692,626 B2Granted
Methods and systems for a transmission shift assembly
AssigneeDana Heavy Vehicle Systems Group, LLC
InventorsTravis J. Miller, Michael D. Cook, Jordan M. Houser, George A. Willford, Mark A. Davis
Life of this patent
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Abstract
Various methods and systems are provided for a shift assembly for a vehicle transmission. In one example, a shift assembly for a transmission includes 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 independent of the second barrel cam; and a second motor configured to drive the second barrel cam independent of the first barrel cam.
Claims7
A method, comprising:
- responsive to determination of a skip shift condition, controlling a rotational position of a first barrel cam of a shift assembly of a transmission around a rotational axis in a first direction via a first motor to disengage one gear wherein the skip shift condition is a condition in which a controller commands the shift assembly to adjust the transmission from a current gear engagement to a different gear engagement in a non-sequential order;
- and
- controlling a rotational position of a second barrel cam of the shift assembly around the rotational axis in a second direction that is opposite the first direction via a 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 steps of controlling the rotational position of the first barrel cam and the second barrel cam occur at an overlapping time;
- and
- wherein the first barrel cam includes a first cam track and the second barrel cam includes a second cam track.
3 more elements
Dependencies are inferred from the claim text.