Invention Grant
- Patent Title: 8-speed transmission with two fixed interconnections and on grounded member
- Patent Title (中): 8路传输,两个固定互连和接地的成员
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Application No.: US11867712Application Date: 2007-10-05
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Publication No.: US07699742B2Publication Date: 2010-04-20
- Inventor: James M. Hart , Andrew W. Phillips , Clinton E. Carey , Scott H. Wittkopp , Madhusudan Raghavan
- Applicant: James M. Hart , Andrew W. Phillips , Clinton E. Carey , Scott H. Wittkopp , Madhusudan Raghavan
- Applicant Address: US MI Detroit
- Assignee: GM Global Technology Operations, Inc.
- Current Assignee: GM Global Technology Operations, Inc.
- Current Assignee Address: US MI Detroit
- Agency: Quinn Law Group, PLLC
- Main IPC: F16H3/62
- IPC: F16H3/62

Abstract:
The transmission has a plurality of members that can be utilized in powertrains to provide eight forward speed ratios and one reverse speed ratio. The transmission includes three planetary gear sets having five torque-transmitting mechanisms, two fixed interconnections and a grounded member. The powertrain includes an engine and torque converter that is continuously connected to at least one of the planetary gear members and an output member that is continuously connected with another one of the planetary gear members. The five torque-transmitting mechanisms provide interconnections between various gear members, and with the transmission housing, and are operated in combinations to establish eight forward speed ratios and one reverse speed ratio.
Public/Granted literature
- US20080242478A1 8-Speed Transmission With Two Fixed Interconnections and One Grounded Member Public/Granted day:2008-10-02
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