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Drive unit for a motor vehicle, motor vehicle, and method for operating a motor vehicle

A technology for driving transmission and driving machine, which is applied in the direction of motor vehicles, mechanical equipment, road vehicle driving control systems, etc., and can solve the problems of large load of superimposed transmission devices and high cost of transmission device formation.

Active Publication Date: 2017-12-12
AUDI AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The formation of the transmission is relatively expensive, especially because of the need for stepped planet wheels
In addition, superimposed transmission loads are relatively large in torque vectoring mode

Method used

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  • Drive unit for a motor vehicle, motor vehicle, and method for operating a motor vehicle
  • Drive unit for a motor vehicle, motor vehicle, and method for operating a motor vehicle
  • Drive unit for a motor vehicle, motor vehicle, and method for operating a motor vehicle

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Embodiment Construction

[0041] figure 1 A motor vehicle 1 is shown which comprises a drive transmission 2 which is designed to distribute the torque, which can be provided by a drive machine 53 of the motor vehicle 1 via a drive shaft 4 , to an output shaft 5 , by means of a differential 3 . 6 on. In order to influence the distribution of the drive torque to the output shafts 5, 6 and to provide a hybrid function for the motor vehicle, the drive transmission 2 also includes a superposition transmission 7, via which the output shaft 6, the differential The torque superposition delivered to the superposition transmission device 7 by the transmission 3 and the auxiliary driving machine 8. The torque transmission from the differential 3 takes place via a torque reducing transmission 9 , which reduces the torque tapped off at the differential in order to reduce the load on the superposition transmission 7 .

[0042] The superposition transmission 7 includes a switching device, not shown, which influence...

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PUM

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Abstract

The invention relates to a drive unit for a motor vehicle, comprising a differential (3) for distributing a driving moment supplied via a drive shaft (4) to two output shafts (5, 6, 17, 21), and a superposition gear (7, 15) that is coupled to the differential (3), one of the output shafts (6, 17) and an additional motor (8, 16) in order to superimpose torques supplied by the output shaft (6, 17), the differential (3) and the additional motor (8, 16); the differential (3) is coupled to the superposition gear (7, 15) via a moment-reducing transmission device (9); the superposition gear (7, 15) comprises a switching device that can be controlled by a control device (10); in a first switched state of the switching device, the superposition gear superimposes the torques supplied by the output shaft (6, 17), the differential (3) and the additional motor (8, 16) in such a way that the distribution of the driving moments to the output shafts (5, 6, 17, 21) depends upon an additional torque applied by the additional motor (8, 16), and in a second switched state of the switching device, the superposition gear superimposes the torques supplied by the output shaft (6, 17), the differential (3) and the additional motor (8, 16) in such a way that the additional torque is evenly distributed to both output shafts (5, 6, 17, 21).

Description

technical field [0001] The invention relates to a drive transmission for a motor vehicle, comprising: a differential for distributing a drive torque transmissible via a drive shaft to two output shafts; A superdrive coupled superdrive for superimposing the torque delivered by the output shaft, the differential and the subdrive, wherein the differential is coupled to the superposition via a torque-reducing transmission. Background technique [0002] In motor vehicles, the differential is used to distribute the drive torque provided by the drive machine to different wheels of an axle or different axles. In order to avoid wheel slippage and to transmit the yaw torque to the motor vehicle in a targeted manner in certain driving situations, it is advantageous to selectively influence the distribution of the torque to the output shaft of such a differential. One possibility for this is the so-called electronic torque vectoring, in which an auxiliary drive is used in order to infl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60K1/00B60K6/48B60W20/00F16H48/36
CPCB60K1/00B60K6/48B60W20/00F16H48/36F16H2048/364B60K17/16B60K23/04B60K2001/001B60W10/16B60K6/365B60K6/52B60W10/08B60K2006/381B60W2720/406B60Y2300/82F16H48/11B60Y2200/92B60Y2400/73Y10S903/911Y10S903/916Y02T10/62B60K17/35B60Y2200/91B60Y2300/80B60Y2400/80B60Y2400/82F16H48/08F16H48/10F16H2048/106
Inventor U·皮施密特S·塞德
Owner AUDI AG