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Step variable transmission for a motor vehicle

A technology of speed change device and motor vehicle, applied in the direction of vehicle gearbox, transmission device, gear transmission device, etc., to achieve the effect of small shift wheel diameter, noise and vibration reduction, and installation space saving

Active Publication Date: 2007-11-14
GETRAG GETRIEBE & ZAHNRADFABRIK HERMANN HAGENMEYER GMBH & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] But both transmission types (dual clutch transmission and automatic shift transmission) still have room for improvement

Method used

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  • Step variable transmission for a motor vehicle
  • Step variable transmission for a motor vehicle
  • Step variable transmission for a motor vehicle

Examples

Experimental program
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Embodiment Construction

[0068] In FIG. 1 , a first embodiment of the dual clutch transmission according to the invention is indicated generally at 10 .

[0069] The dual clutch transmission 10 has a first drive shaft 12 and a second drive shaft 14 . The second driving shaft 14 is a hollow shaft and is arranged concentrically with respect to the first driving shaft 12 .

[0070] The first drive shaft 12 can be connected to the first clutch K1. The second drive shaft 14 can be connected to the second clutch K2.

[0071] The first drive shaft 12 has a longer axial length than the second drive shaft 14 and protrudes beyond the second drive shaft 14 .

[0072] The dual clutch transmission 10 also has a first output shaft 16 and a second output shaft 18 . Both driven shafts 16 , 18 are arranged parallel to the driving shafts 12 , 14 and are connected to the differential driving wheel 24 of the differential device 26 through a constant output gear pair.

[0073] More precisely, the gear pair with consta...

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Abstract

The gearbox includes a set of forward gear levels and a reverse gear level. A set of wheel sets exhibits gear changing wheels, which are rotatably supported and connected at a shaft arrangement by gear changing couplings. A drive shaft arrangement exhibits two drive shafts (12, 14), which are assigned to respective partial transmissions. The forward and reverse gear levels are assigned to different partial transmissions.

Description

technical field [0001] The invention relates to a stepped transmission for a motor vehicle, wherein the stepped transmission has a plurality of forward gears and at least one reverse gear. [0002] The invention relates more precisely to an automatically shifted stepped transmission in which the gears are engaged and disengaged by means of actuators. For example electrically driven control drums, hydraulic linear actuators etc. can be used as actuators. [0003] The invention particularly relates to dual clutch gearboxes and automatic transmissions. Background technique [0004] Dual-clutch transmissions are known, for example, from DE19821164A1, EP0083747A2, EP0046373A1. [0005] Automatic shifting transmissions such as in Smart  , BMW  M3 and recent BMWs  Both are used in M5. The latter includes a 7-speed automatic shift transmission. The automatic shift transmission has a wheel set that does not conform to the traditional H type. Specifically, a shift clutch pa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H3/00F16H3/089F16H3/093
CPCF16H2003/0931F16H2003/0826F16H2200/0026F16H63/48F16H2200/0047F16H3/006F16H2200/0052F16H3/089F16H3/093F16H2200/0056F16H2003/0933F16H2200/0065F16H2003/0935Y10T74/19074Y10T74/19126Y10T74/19233
Inventor G·布加特R·沙尔施密特S·卡普
Owner GETRAG GETRIEBE & ZAHNRADFABRIK HERMANN HAGENMEYER GMBH & CO KG
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