Invention Grant
- Patent Title: Transmission for a motor vehicle
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Application No.: US14780782Application Date: 2014-02-25
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Publication No.: US09933043B2Publication Date: 2018-04-03
- 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: DE102013205378 20130327
- International Application: PCT/EP2014/053571 WO 20140225
- International Announcement: WO2014/154412 WO 20141002
- Main IPC: F16H3/66
- IPC: F16H3/66 ; F16H3/44

Abstract:
A multi-speed transmission for a motor vehicle includes a housing, a drive shaft, an output shaft, at least four planetary gear sets, whereas each of the planetary gear sets comprises one sun gear, at least one planet, one planetary carrier and one ring gear. The transmission includes several shift elements in the form of at least three clutches and at least three brakes. The drive shaft is connectable through the second clutch to the planetary carrier of the first planetary gear set. The planetary carrier of the first planetary gear set is connected to the second brake. The ring gear of the first planetary gear set is connected to the planetary carrier of the fourth planetary gear set. The planetary carrier of the fourth planetary gear set is connected to the sun gear of the third planetary gear set. The sun gear of the fourth planetary gear set is connected to the third brake. The planetary carrier of the third planetary gear set is connected to the output shaft. The ring gear of the third planetary gear set is connected to the ring gear of the fourth planetary gear set. The third clutch is connected to the first brake. The third clutch is connected to the sun gear of the first planetary gear set.
Public/Granted literature
- US20160047442A1 Transmission for a Motor Vehicle Public/Granted day:2016-02-18
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