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Multi-shifting speed variator

A multi-speed transmission and clutch technology, applied in the direction of vehicle gearbox, multi-gear ratio transmission, transmission, etc., to achieve the effect of small size, small torque and low speed

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, transmissions of this type require 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 restricted gear combination. blocking element

Method used

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Examples

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Embodiment Construction

[0038] figure 1 shows a multi-speed transmission according to the invention with an input shaft 1 and an output shaft 2 which are arranged in a housing G. Four planetary gearsets P1 , P2 , P3 and P4 are provided, which are configured as negative planetary gearsets and are preferably consecutive in the axial or power flow direction in the sequence of P1 , P2 , P3 and P4 .

[0039] 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. 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 .

[0040] According to the present invention, in figure 1 In the multi-speed transmission, the drive is via shaft 1, which is permanently connected to the bridge of...

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Abstract

A multi-speed transmission has nine forward gears and a reverse gear. The multi-speed transmission comprises four planetary gear sets, seven axes of rotation and six shift components. The invention optimizes the construction expenditure and improves main running gear efficiency about the loss of meshing and pulling. In addition, the multi-speed transmission of the invention has small torque action on the shift components and planetary gear, the rotational speed of axle is slow and the shift components and planetary gear sets are less.

Description

technical field [0001] The invention relates to a multi-speed transmission with a planetary gear structure, especially an automatic transmission for automobiles. 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 usually associated with actuation under sliding action and optionally provided with tap-off clutches 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 the differential transmission ratio between 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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