Drive transmission device for a motor vehicle, motor vehicle and method for operating a motor vehicle
A technology for driving transmissions and driving machines, which is applied in the direction of motor vehicles, mechanical equipment, road vehicle drive control systems, etc., and can solve the problems of large load on superimposed transmission devices and high cost of transmission devices.
Active Publication Date: 2020-04-17
AUDI AG
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- 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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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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The invention relates to a drive transmission for a motor vehicle with a differential (3) for distributing a drive torque that can be delivered via a drive shaft (4) to two output shafts (5, 6, 17, 21); and a superimposed transmission (7, 15) coupled with the differential (3), one of the output shafts (6, 17) and the auxiliary drive machine (8, 16), used for superposition by The torque delivered by the output shaft (6, 17), the differential (3) and the auxiliary drive (8, 16), wherein the differential (3) shifts the speed by reducing the torque A device (9) is coupled to said superposition transmission (7, 15), wherein said superposition transmission (7, 15) comprises a switching device controllable by a control device (10), wherein said superposition transmission is at In the first switching state of the switching device, the torque delivered by the output shaft (6, 17), the differential (3) and the auxiliary drive (8, 16) is superimposed such that the The distribution of drive torque to the output shafts (5, 6, 17, 21) depends on the auxiliary torque applied by the auxiliary drive machine (8, 16), in the second switching state of the switching device superimposing the torque delivered by the output shaft (6, 17), the differential (3) and the auxiliary drive machine (8, 16) so that the auxiliary torque is evenly distributed between the two on the 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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IPC IPC(8): B60K6/365B60K17/16B60K1/00B60K6/52B60K6/48F16H48/36B60W10/08B60W10/16B60W20/00
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