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Variable ratio transmission for distributing a drive torque to at least two output shafts

A technology of output shaft and driving force, which is applied in the direction of transmission, transportation and packaging, differential transmission, etc., can solve the problems of high production and assembly costs, and achieve the effect of simple cost and high efficiency

Inactive Publication Date: 2010-03-03
ZF FRIEDRICHSHAFEN AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This known transmission disadvantageously comprises a large number of components; moreover, the production and assembly costs are very high

Method used

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  • Variable ratio transmission for distributing a drive torque to at least two output shafts

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Embodiment Construction

[0021] In the figure, 1 designates a conventional differential, which is driven via a drive An. Next to the differential 1, the cross planetary gear assembly 2 is arranged coaxially with the drive shaft 8 as a transmission ratio unit, wherein the outer sun gear 3 of the cross planetary gear assembly 2 is connected to the planetary gear assembly of the differential 1 The output part 8 on the side of 2 is connected, and the fixed connection part 4 of the planetary gear assembly 2 is connected with the electric motor 5 . As can be clearly seen from the figure, the inner sun gear 6 of the planetary gear set 2 is connected via an intermediate shaft 7 to a further output shaft 9 . In the exemplary embodiment shown, the electric motor 5 is designed as an outer rotor with a hollow shaft stator.

[0022] According to the invention, the static transmission ratio of the planetary gear set 2 is precisely compensated for by the ratio error of the countershaft 7, so that the electric motor...

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PUM

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Abstract

The invention relates to a variable ratio transmission for distributing a drive torque to at least two output shafts (8, 9), comprising a conventional differential (1), which has an electric motor (5)for distributing the drive torque directly between the output shafts (8, 9) and a plus planetary gear set (2) serving as the variable ratio unit, wherein the plus planetary gear set (2) is arranged coaxially to a drive shaft (8), wherein the outer sun wheel (3) of the plus planetary gear set (2) is connected to the output (8) on the side of the differential (1) facing the planetary gear set (2),and the planet carrier (4) of the planetary gear set (2) is connected to the electric motor (5), and wherein the inner sun wheel (6) of the planetary gear set (2) is connected via a countershaft (7) to the other output shaft (9).

Description

technical field [0001] According to the preamble of claim 1 , the invention relates to a gear ratio transmission for distributing the drive torque to at least two output shafts. Background technique [0002] In motor vehicles known from practice, the drive torque generated by the drive source, more precisely the engine, is expediently transmitted via a transmission device to drive wheels of driveable vehicle axles. Motor vehicles, such as all-wheel sedans or all-wheel-drive trucks, are designed with multiple drive axles, and the engine power in the drive train of such vehicles must be distributed to the individual drive axles of the vehicle. [0003] The power is distributed here using a differential transmission, which is connected in series with the main transmission in the power line of the vehicle drive system and which is provided to form different transmission ratios. To distribute the drive power of the engine longitudinally to a plurality of drivable vehicle axles o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60K23/08B60K17/16B60K17/346F16H1/28
CPCB60K17/165F16H2048/204F16H48/20F16H48/08F16H48/30
Inventor 德特勒夫·巴施克里斯托夫·佩尔兴托马斯·罗泽迈尔
Owner ZF FRIEDRICHSHAFEN AG