发明申请
- 专利标题: Multiple speed automatic transmission
- 专利标题(中): 多速自动变速器
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申请号: US11728448申请日: 2007-03-26
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公开(公告)号: US20080242470A1公开(公告)日: 2008-10-02
- 发明人: Steven G. Thomas , Donald E. Hoffman , Gregory D. Goleski
- 申请人: Steven G. Thomas , Donald E. Hoffman , Gregory D. Goleski
- 主分类号: F16H3/44
- IPC分类号: F16H3/44
摘要:
A multi-speed automatic transmission includes an input, an output, a first gear unit drivable connected to the input and including a component rotating at the speed of the input and a first gear unit output, the first gear unit producing a gear ratio of a speed of the input and a speed of the first gear unit output, a planetary gear unit including a modified Simpson gearset, the gear unit being secured to first, second, third, fourth and fifth rotating members, the fifth member being secured to the output for rotation therewith, a first clutch being operable to connect the first rotating member and the first gear unit output, a second clutch being operable to connect the second rotating member and the first gear unit output, a third clutch being operable to connect the third rotating member and an element rotating at a speed of the input, a fourth clutch being operable to connect the fourth rotating member and said element rotating at the speed of the input, a first brake being operable to hold the fourth rotating member against rotation, and a second brake being operable to hold the third rotating member against rotation.
公开/授权文献
- US07670249B2 Multiple speed automatic transmission 公开/授权日:2010-03-02