Invention Grant
- Patent Title: Multi-speed transmission having automatic and manual modes
- Patent Title (中): 具有自动和手动模式的多速变速器
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Application No.: US12884969Application Date: 2010-09-17
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Publication No.: US08371984B2Publication Date: 2013-02-12
- Inventor: Larry D. Diemer , Farzad Samie , Chunhao J. Lee , David W. Wright
- Applicant: Larry D. Diemer , Farzad Samie , Chunhao J. Lee , David W. Wright
- 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 is provided having a stationary member, an input member, an output member, four planetary gear sets, a plurality of coupling members and five torque transmitting devices. Each of the planetary gear sets includes first, second and third members. The five torque transmitting mechanisms are selectively engageable to interconnect one of the first, second, and third members with another of the first, second, third members, and a stationary element. The torque transmitting mechanisms are selectively engageable in combinations of at least three to establish at least eight forward speed ratios and at least one reverse speed ratio between the input member and the output member. A first of the five torque-transmitting mechanisms is a selectable one-way clutch engageable to interconnect the third member of the fourth planetary gear set with the stationary member.
Public/Granted literature
- US20120071292A1 MULTI-SPEED TRANSMISSION HAVING AUTOMATIC AND MANUAL MODES Public/Granted day:2012-03-22
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