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Transmission for a motor vehicle

A transmission and motor vehicle technology, applied in vehicle gearboxes, transmissions, mechanical equipment, etc., can solve problems such as loss and high internal efficiency, and achieve the effects of reducing noise emissions, improving efficiency, and large degrees of freedom

Inactive Publication Date: 2016-03-09
ZF FRIEDRICHSHAFEN AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This leads to a high internal efficiency loss if there are a large number of open dragging clutches when forming gears

Method used

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  • Transmission for a motor vehicle
  • Transmission for a motor vehicle

Examples

Experimental program
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Effect test

Embodiment Construction

[0043] figure 1 A transmission according to an embodiment of the invention is shown.

[0044] exist figure 1 A multi-speed transmission is shown in . The multi-speed transmission 1 includes six shift elements in the form of four clutches K1 , K2 , K3 , K4 and two brakes B1 , B2 . The drive end of the transmission 1 can be coupled or connected to the output end of the transmission 1 by means of four clutches K1 , K2 , K3 , K4 via shafts, shift elements and / or planetary gear sets in order to transmit power and torque.

[0045] The general configurations of the first planetary gear set GP1 , the second planetary gear set GP2 , the third planetary gear set GP3 ​​, and the fourth planetary gear set GP4 are first described below. The planetary gearsets GP1, GP2, GP3 and GP4 described above are constructed in the usual manner and comprise a central sun gear 101, 102, 103, 104, respectively, which communicates with at least one planet gear 111, 112, 113 , 114 work together to tran...

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Abstract

The invention relates to a transmission, in particular a multi-step transmission for a motor vehicle, comprising a housing, an input shaft, an output shaft and at least four planetary wheel sets. Said planetary wheel sets comprise a sun gear, at least one planetary gear, a planetary wheel support and a ring gear, in addition to several switching elements in the form of at last four couplings and at least two brakes. Said sun gear, at least two planetary gear sets, in particular sun gears of the first and the second planetary gear set can be connected by means of the first brake to the housing.

Description

technical field [0001] The invention relates to a transmission for a motor vehicle, in particular a multi-speed transmission, comprising a housing, a drive shaft, a driven shaft and at least four planetary gear sets and a plurality of switching elements, wherein the planetary gear sets The sun gear, the planet gear, the planet carrier and the ring gear are respectively included, and the switching elements are in the form of at least four clutches and at least two brakes. Background technique [0002] Such a transmission is known, for example, from WO 2012 / 052284 A1. In WO 2012 / 052284 A1 a multi-speed transmission with six forward gears and one reverse gear is shown, which comprises four planetary gearsets, seven rotatable shafts and five shifting elements, wherein the first planetary The sun gear of the gear set is connected to the sixth shaft, which can be coupled to the transmission housing via the first brake, and the planet carrier of the first planetary gear set is con...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H3/66
CPCF16H3/66F16H2200/0069F16H2200/2012F16H2200/2046
Inventor S·贝克C·西布拉
Owner ZF FRIEDRICHSHAFEN AG
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