Invention Grant
- Patent Title: Multi-speed transmission
- Patent Title (中): 多速传输
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Application No.: US12987735Application Date: 2011-01-10
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Publication No.: US08496556B2Publication Date: 2013-07-30
- Inventor: Scott H. Wittkopp , Andrew W. Phillips , James M. Hart , Edward W. Mellet
- Applicant: Scott H. Wittkopp , Andrew W. Phillips , James M. Hart , Edward W. Mellet
- 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:
A transmission includes an input and output member, four planetary gear sets each having first, second and third members, five interconnecting members continuously interconnecting members of the four planetary gear sets and six torque transmitting mechanisms selectively engageable to interconnect one of the first members, second members, and third members with at least one of another of the first members, second members, third members, and a stationary member. The torque transmitting mechanisms are selectively engageable in combinations of at least two to establish at least nine forward speed ratios and at least one reverse speed ratio between the input member and the output member.
Public/Granted literature
- US20120178580A1 MULTI-SPEED TRANSMISSION Public/Granted day:2012-07-12
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