Electrically-actuated braking clutch for transmission
AssigneeGeneral Motors Corporation
InventorJeffrey J. Biallas
Life of this patent
Estimating the term…
Abstract
A braking clutch is provided for a transmission which includes a transmission housing and a plurality of planetary gear members. The braking clutch includes a floating caliper movably supported on the transmission housing. An apply hub is actuated by an electric motor. A rotor is operatively connected to one of the planetary gear members and has a portion extending between the floating caliper and the apply hub to enable selective braking of rotation of the rotor by frictionally engaging the portion of the rotor between the floating caliper and apply hub, thereby braking rotation of the planetary gear member.
Claims12
A braking clutch for a transmission which includes a transmission housing and a plurality of planetary gear members, the braking clutch comprising:
- a floating caliper movably supported on the transmission housing;
- an apply hub actuated by an electric motor;
- and
- a rotor operatively connected to one of the planetary gear members and having a portion extending between the floating caliper and the apply hub to enable selective braking of rotation of the rotor by frictionally engaging said portion of the rotor between the floating caliper and apply hub, thereby braking rotation of said one of the planetary gear members.
A braking clutch for a transmission which includes a transmission housing and a plurality of planetary gear members, the braking clutch comprising:
- a floating caliper movably supported with respect to the transmission housing;
- an apply hub movable with respect to the floating caliper;
- an electric motor operatively engaged with the apply hub for actuating the apply hub;
- and
- a rotor operatively connected to one of the planetary gear members and including a radially extending rotor plate extending between the floating caliper and the apply hub to enable selective braking of rotation of the rotor by frictional engagement of said rotor plate between the floating caliper and apply hub, thereby braking rotation of said one of the planetary gear members.
A vehicle transmission comprising:
- a transmission housing;
- a plurality of planetary gear members;
- a first braking clutch electrically actuated by a first electric motor to brake rotation of one of said planetary gear members;
- and
- a second braking clutch electrically actuated by a second electric motor for selectively braking rotation of another of said planetary gear members.
Dependencies are inferred from the claim text.