Invention Grant
- Patent Title: Eight speed automatic transmission
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Application No.: US13161219Application Date: 2011-06-15
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Publication No.: US08221280B2Publication Date: 2012-07-17
- Inventor: Clinton E. Carey , James M. Hart , Andrew W. Phillips , Scott H. Wittkopp
- Applicant: Clinton E. Carey , James M. Hart , Andrew W. Phillips , Scott H. Wittkopp
- Applicant Address: US MI Detroit
- Assignee: GM Global Technology Operations LLC
- Current Assignee: GM Global Technology Operations LLC
- Current Assignee Address: US MI Detroit
- Main IPC: F16H3/44
- IPC: F16H3/44

Abstract:
An eight speed automatic transmission is provided having an input member, an output member, four planetary gear sets and five torque transmitting devices. Three of the planetary gear sets are simple and one planetary gear set is compound. Each of the plurality of planetary gear sets has first, second and third members: a sun gear, a ring gear and a planet carrier having a plurality of planet gears rotatably disposed thereon. Three of the torque transmitting devices are clutches and two of the devices are brakes. Eight embodiments of the transmission having different arrangements of the planetary gear sets, clutches and brakes are disclosed.
Public/Granted literature
- US20110245020A1 EIGHT SPEED AUTOMATIC TRANSMISSION Public/Granted day:2011-10-06
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