Invention Grant
- Patent Title: Multi-speed transmission
- Patent Title (中): 多速传输
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Application No.: US13295782Application Date: 2011-11-14
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Publication No.: US08435153B2Publication Date: 2013-05-07
- Inventor: Andrew W. Phillips , James M. Hart , Scott H. Wittkopp , Clinton E. Carey
- Applicant: Andrew W. Phillips , James M. Hart , Scott H. Wittkopp , Clinton E. Carey
- 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: F16H3/62
- IPC: F16H3/62

Abstract:
A transmission of the present invention has an input member, an output member, four planetary gear sets, a plurality of coupling members and a plurality of torque transmitting devices. Each of the planetary gear sets includes first, second and third members. The torque transmitting devices may include clutches and brakes. The torque transmitting devices are selectively engageable in combinations of at least two to establish at least nine forward speed ratios and at least one reverse speed ratio.
Public/Granted literature
- US20120058856A1 MULTI-SPEED TRANSMISSION Public/Granted day:2012-03-08
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