Invention Grant
- Patent Title: Multi-speed planetary transmission
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Application No.: US14780630Application Date: 2014-02-25
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Publication No.: US09856947B2Publication Date: 2018-01-02
- Inventor: Stefan Beck , Christian Sibla , Wolfgang Rieger
- Applicant: ZF Friedrichshafen AG
- Applicant Address: DE Friedrichshafen
- Assignee: ZF Friedrichshafen AG
- Current Assignee: ZF Friedrichshafen AG
- Current Assignee Address: DE Friedrichshafen
- Agency: Dority & Manning, P.A.
- Priority: DE102013205377 20130327
- International Application: PCT/EP2014/053569 WO 20140225
- International Announcement: WO2014/154411 WO 20141002
- Main IPC: F16D3/66
- IPC: F16D3/66 ; F16H3/66 ; F16H3/44

Abstract:
A multi-speed planetary transmission includes a housing, a drive shaft connectable to a drive train for transferring a drive torque from the drive train to the multi-speed planetary transmission, and four single planetary transmissions arranged along a housing longitudinal axis. The planetary gears feature a sun gear, ring gear, and planetary carrier. Six shift elements are arranged within the housing and are designed as four clutch elements and two brakes. Connecting shafts form connections between the single planetary transmissions, the drive shaft, the output shaft, the clutch elements and/or the brakes. The single planetary transmissions are shiftable such that nine forward gears and one reverse gear are provided, and the shift elements are arranged in a manner easily accessible from outside the housing.
Public/Granted literature
- US20160053865A1 Multi-Stage Planetary Gear Mechanism Public/Granted day:2016-02-25
Information query
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