Invention Grant
- Patent Title: Multi-speed transmission
- Patent Title (中): 多速传输
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Application No.: US12538941Application Date: 2009-08-11
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Publication No.: US08206257B2Publication Date: 2012-06-26
- Inventor: Gerhard Gumpoltsberger , Martin Brehmer , Peter Ziemer , Peter Tiesler , Gabor Diosi , Josef Haupt
- Applicant: Gerhard Gumpoltsberger , Martin Brehmer , Peter Ziemer , Peter Tiesler , Gabor Diosi , Josef Haupt
- 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: DE102008041192 20080813
- Main IPC: F16H3/62
- IPC: F16H3/62 ; F16H3/44 ; F16H37/06

Abstract:
A multi-speed transmission having four gearsets, eight shafts and six shifting elements. The sun gear of gearset (P2) couples, via shaft (5) and brake (05), the housing (G), and, via clutch (15) the drive shaft. The carriers of gearsets (P2, P3) communicate, via shaft (4) and brake (04), with housing (G), and the sun gear of gearset (P3) communicates, via shaft (8) and clutch (18), with the drive shaft. The ring gears of gearsets (P2, P3) communicate, via shaft (6), with the ring gear of gearset (P4) and the sun gear of gearset (P1). The ring gear of gearset (P4) and the sun gear of gearset (P1) are connected with one another. The sun gear of gearset (P4) communicates, via shaft (3) and brake (03), with housing (G). The carriers of gearsets (P1, P4) communicate, via shaft (7) and clutch (17), with the drive shaft and the output shaft couples the ring gear of gearset (P1).
Public/Granted literature
- US20100041507A1 MULTI-SPEED TRANSMISSION Public/Granted day:2010-02-18
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