Invention Grant
- Patent Title: Multi-stage automatic transmission
- Patent Title (中): 多级自动变速器
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Application No.: US11659465Application Date: 2005-08-08
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Publication No.: US07651432B2Publication Date: 2010-01-26
- Inventor: Gert Bauknecht , Peter Ziemer , Armin Gierling
- Applicant: Gert Bauknecht , Peter Ziemer , Armin Gierling
- Applicant Address: DE Friedrichshafen
- Assignee: ZF Friedrichshafen AG
- Current Assignee: ZF Friedrichshafen AG
- Current Assignee Address: DE Friedrichshafen
- Agency: Davis & Bujold, P.L.L.C.
- Priority: DE102004038279 20040806
- International Application: PCT/EP2005/008598 WO 20050808
- International Announcement: WO2006/015843 WO 20060216
- Main IPC: F16H3/44
- IPC: F16H3/44

Abstract:
A multi-stage automatic transmission comprising a drive shaft (AN), a double planetary front mounted gear set (VS), a main gear set (HS) which is embodied as a coupled planetary gear set comprising at least three non-coupled input elements and an output element, in addition to six switch elements (A to F). Engagement of the six switch elements (A to F) takes place in pairs thereby enabling at least eight forward gears to be shifted. One element of the front mounted gear set (VS) is determined on a housing (GG). The second and the sixth shift element (B, F) form a component which is arranged on the side of the front mounted gear set (VS) which is oriented away from the main gear set (HS) and is arranged in an at least partially axial manner, between the front mounted gear set (VS) and a housing wall (GW), which is secured to the gear housing and which extends in a radial manner.
Public/Granted literature
- US20070293363A1 Multi-Stage Automatic Transmission Public/Granted day:2007-12-20
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