Electronic Shifter with Adaptive Position
AssigneeGM Global Technology Operations LLC
InventorOrson S. Wang
Life of this patent
Estimating the term…
Abstract
A latching shifter mated with a shift-by-wire transmission in which the gear cam includes a momentary shift lever position which is spring biased toward the drive gear notch. A driver is enabled to shift the transmission into a desired gear by passing the shift lever into and out of the momentary shift lever position in the event of autonomous shifting by the transmission or to otherwise provide a selected gear of the transmission. Preferably a dynamically changeable gear shift display is provided, the indicia of which is responsive to the gear status of the transmission.
Claims16
A latching shifter with adaptive position for a shift-by-wire transmission, comprising:
- a latching shifter comprising:
- a shift lever;
- a cam follower movably connected to said shift lever;
- a gear cam comprising:
- a plurality of serially arranged gear notches including a drive gear notch;
- and
- a momentary shift lever position disposed serially adjoining said gear notches and
- a biasing spring biasing said cam follower into any gear notch of said plurality of gear notches;
- wherein said momentary shift lever position is defined by a surface thereof on which said cam follower is slidable, said surface being inclined with respect to biasing by said biasing spring toward said drive gear notch.
A method for shifting a shift-by-wire transmission, comprising the steps of:
- providing a linearly sequential electronic shifter having a shift lever movable with respect to a plurality of gear notches and a momentary shift lever position;
- manually selecting a gear of the shift-by wire transmission by moving the shift lever into a gear notch corresponding to the selected gear;
- autonomously selecting another gear of the shift-by-wire transmission;
- manually reselecting a gear of the shift-by-wire transmission by passing the shift lever into and out of the momentary shift lever position.
A method for shifting a shift-by-wire transmission, comprising the steps of:
- providing a linearly sequential electronic shifter having a shift lever movable with respect to a plurality of gear notches and a momentary shift lever position;
- manually selecting a gear of the shift-by wire transmission by moving the shift lever into a gear notch corresponding to the selected gear;
- and
- manually reselecting a gear of the shift-by-wire transmission by passing the shift lever into and out of the momentary shift lever position.
Dependencies are inferred from the claim text.