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Multi-gear transmission

A multi-speed transmission and transmission technology, which is applied to vehicle gearboxes, multi-gear ratio transmissions, transmissions, etc., can solve the problems of no durable improvement and improvement, and achieve improved driving comfort and good overall driving gear. Efficiency and cost reduction effect

Inactive Publication Date: 2007-08-22
ZF FRIEDRICHSHAFEN AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] Automatically shifted automotive transmissions, generally in the form of a planetary structure, have been disclosed in the prior art in various ways, and have not undergone durable improvements and enhancements.

Method used

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Embodiment Construction

[0029] FIG. 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. It provides four planetary gear sets P1 , P2 , P3 and P4 which form negative planetary gear sets and are preferably one after the other in the order P1 , P2 , P3 , P4 in the axial direction or in the direction of force transmission Make arrangements.

[0030] As is clear from FIG. 1 , six shifting elements are provided, namely three brakes 03 , 04 , 05 and three clutches 13 , 27 and 35 . Preferably, these clutches are formed as diaphragm clutches.

[0031] Selective engagement from nine forward gears and one reverse gear is possible via these shifting elements. The multi-speed transmission of the present invention has a total of 7 rotatable shafts, namely shafts 1 , 2 , 3 , 4 , 5 , 6 and 7 .

[0032] According to the invention, in the multi-speed transmission of FIG. 1 , the drive is effected by means of a shaft 1 which i...

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Abstract

The invention provides a multi-gear transmission provided with nine forward gears and one reverse gear. The transmission comprises four planetary gear sets (P1, P2, P3 and P4); seven rotatable shafts (1, 2, 3, 4, 5, 6 and 7); six gear change components (03, 04, 05, 14, 17, 27, 35 and 47). The input shaft (1) is connected with the center wheel of the planetary gear set (P2) and the center wheel of the planetary gear set (P3). The shaft (3) is connected with the bridging part of the planetary gear set (P2), and is coupled inside an encloser (G), is connected with the shaft (5) through a clutch (35) in a releasable way. The shaft (3) is connected with the hollow wheel of the planetary gear set (P1). The shaft (6) is connected with the bridging part of the planetary gear set (P1), the hollow wheel of the planetary gear set (P2) and the center wheel of the planetary gear set (P4). The shaft (7) is connected with the bridging part of the planetary gear set (P3), and is connected with the output shaft (2) connected with the hollow wheel of the fourth planetary gear set (P4) in a releasable way. The center wheel of the planetary gear set (P1) is connected with the encloser (G) in a torsion resistant way. The shaft (4) is connected with the hollow wheel of the planetary gear set (P3) and the bridging part of the planetary gear set (P4), and coupled to the encloser (G). The shafts (1) and (4), the shafts (1) and (7), or the shafts (4) and (7) are connected with each other in a releasable way through a clutch (14), a clutch (17) or a clutch (47).

Description

technical field [0001] The present invention relates to a multi-speed transmission in a planetary structure as described in the preamble of claim 1, in particular to an automatic transmission for a vehicle. Background technique [0002] According to the prior art, automatic transmissions, in particular automatic transmissions for automobiles, comprise planetary gear sets which are switched by means of friction or shifting elements such as clutches or brakes, and which are usually connected to a slipping and optionally provided The actuating element of the splitter clutch is connected such as a hydrodynamic torque converter or a fluid coupling. [0003] Such a transmission is disclosed in EP0434525A1. It basically includes: an input shaft and an output shaft, which are arranged parallel to each other; a double planetary gear set, which is arranged concentrically with the output shaft; and five shift elements, which are three clutches and two brakes, which The selector inter...

Claims

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Application Information

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