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Multi-speed transmission

A multi-speed transmission and clutch technology, applied in vehicle gearboxes, multi-ratio transmissions, transmissions, etc., to achieve the effects of small size, reduced loss, and improved overall support

Inactive Publication Date: 2011-08-31
ZF FRIEDRICHSHAFEN AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, this type of transmission requires little installation effort, in particular a small number of shifting elements, double-stage shifting is avoided in the sequential shifting mode, and only one gearshift is correspondingly replaced when shifting in a limited gear combination. file component

Method used

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Embodiment Construction

[0029] figure 1 A multi-speed transmission according to the invention is shown in , with an input shaft 1 and an output shaft 2 , which are arranged in a housing G. There are four planetary gear sets P1 , P2 , P3 and P4 which are configured as negative planetary gear sets and are preferably arranged one behind the other in the order of P1 , P2 , P3 and P4 in the axial or power flow direction.

[0030] Such as figure 1 As shown, six shifting elements are provided, ie three brakes 03 , 04 , 05 and three clutches 15 , 27 , 36 . These clutches are preferably designed as multi-disk clutches.

[0031] Using these shifting elements, it is possible to selectively switch between 9 forward gears and 1 reverse gear. The multi-speed transmission according to the invention has a total of seven rotatable shafts, namely shafts 1, 2, 3, 4, 5, 6 and 7.

[0032] According to the present invention, in figure 1 In the multi-speed transmission of the multi-speed transmission, the drive is car...

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Abstract

A multi-speed transmission with reverse and forward gears, planetary gear sets, seven shafts and six shifting elements. The input shaft couples gear sets (P 2 , P 3 ). Shaft ( 3 ) couples the carrier of gear set (P 1 ), the ring gear of gear set (P 2 ), and gear set (P 4 ), and is connectable to the housing. Shaft ( 4 ) couples the carrier of gear set (P 4 ) and to the ring gear of gear set (P 3 ), and is connectable to the housing. Shaft ( 5 ) couples the carrier of gear set (P 2 ), is connectable to the housing, and via a clutch ( 56 ) to the shaft ( 6 ), which couples the ring gear of gearset (P 1 ). Shaft ( 7 ) couples the carrier of gear set (P 3 ), and is connectable via a clutch ( 27 ) to the output shaft ( 2 ), which couples the ring gear of gear set (P 4 ); the sun gear of the planetary set (P 1 ) couples the housing.

Description

technical field [0001] The invention relates to a multi-speed transmission of the planetary gear type, in particular an automatic transmission for motor vehicles, according to the preamble of claim 1 . Background technique [0002] According to the prior art, automatic transmissions, especially for motor vehicles, comprise planetary gear sets, which are shifted by means of friction or shifting elements such as clutches and brakes, and which are generally associated with the actuation of the slipping action and optionally provided with a tap clutch Components such as hydrodynamic torque converters or fluid couplings are connected. [0003] EP0434525A1 proposes such a transmission. It basically consists of an input shaft and an output shaft arranged in parallel with each other, a double planetary gear set arranged concentrically with the output shaft, and five shifting elements (in the form of three clutches and two brakes), each selectively paired The interlock determines t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16H3/66
CPCF16H3/66F16H2200/2097F16H2200/2046F16H2200/2012F16H2200/0065
Inventor 格哈德·贡波采伯格
Owner ZF FRIEDRICHSHAFEN AG
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