| 主权项 |
1. An automatic transmission, comprising:
a plurality of planetary gear sets; a plurality of shifting elements including a dog clutch that defines an axial direction, the dog clutch comprising
a clutch support;a sliding clutch mounted to the clutch support, the sliding clutch defining a plurality of splines;a shape-memory alloy shifter coupled to the sliding clutch, the shape-memory alloy shifter configured for moving the sliding clutch along the axial direction between an engaged configuration and a disengaged configuration; anda mating clutch mounted to a gear of the plurality of planetary gear sets, the mating clutch defining a plurality of splines, the plurality of splines of the mating clutch meshed with the plurality of splines of the sliding clutch in the engaged configuration, the plurality of splines of the mating clutch not meshed with the plurality of splines of the sliding clutch in the disengaged configuration,wherein the shape-memory alloy shifter extends between a first end portion and a second end portion along the axial direction, the first end portion of the shape-memory alloy shifter fixed to the clutch support, the second end portion of the shape-memory alloy shifter fixed to the sliding clutch. |
