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Drive device for vehicle axle of vehicle

A driving device and axle technology, applied in the direction of power device, electric power device, control device, etc., can solve problems such as friction loss

Pending Publication Date: 2021-09-14
AUDI AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in this purely rear-axle operation, frictional losses (air and bearing friction, meshing friction in the transmission, churning losses, etc.)

Method used

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  • Drive device for vehicle axle of vehicle
  • Drive device for vehicle axle of vehicle
  • Drive device for vehicle axle of vehicle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] exist figure 1 shows an electric vehicle with an electrically drivable front axle VA and an electrically drivable rear axle HA. The front axle VA is equipped with exactly one electric motor EM, which acts via the front axle differential 3 on the left and right drive shafts 7 , 9 leading to the right and left front wheels 5 . The rear axle HA has a drive in which, in contrast to the front axle VA, an electric motor EM1, EM2 is assigned to each of the rear wheels 15, which are transmitted via transmission stages U1, U2 to the drive shaft 11 of the rear axle HA. ground connection. if available from figure 1 As obtained in , the front right drive shaft 9 is divided into a wheel-side shaft section 17 and an axle-side shaft section 19 , which can be coupled or disconnected from each other by means of a dog clutch 21 .

[0023] During driving operation, only the unloaded differential movement of the differential bevel gear 29 remains in the front axle differential 3 when th...

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PUM

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Abstract

The invention relates to a drive device for a vehicle axle (VA) of a two-track vehicle having a drive unit having, in particular, an electric machine (EM), which acts on the output side on at least one drive shaft (9) leading to a vehicle wheel (5), the drive shaft (9) being divided into a wheel-side shaft portion (17) and an axle-side shaft portion (19), which can be coupled to or decoupled from each other in a driving manner by means of an interlocking coupling (21) in order to prevent drag losses in the deactivated drive unit (EM) during driving operation with the drive unit (EM) deactivated.

Description

technical field [0001] The invention relates to a drive for an axle of a vehicle with double tracks according to the preamble of claim 1 . Background technique [0002] In an all-wheel-drive vehicle of this type with an electric drive, the front axle and the rear axle can have at least one electric machine independently of one another. For example, depending on the driving situation, the electric motor of the front axle is not powered and only the electric motor of the rear axle is powered, so that only the rear axle drives the vehicle. As a result, the overall efficiency is increased and the effective distance is increased. However, in this purely rear-axle operation, frictional losses (air and bearing friction, meshing friction in the transmission, churning losses, etc.) occur due to the pulled, deactivated front-axle drive. [0003] A drive train for a vehicle with a clutch-controlled all-wheel drive is known from patent document DE 10 2015 210 227 A1. An actuating dev...

Claims

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Application Information

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IPC IPC(8): B60K1/00B60K7/00B60K17/354B60K17/356B60K17/35F16D11/10
CPCB60K1/00B60K2001/001B60Y2400/421B60K7/0007B60K2007/0061B60K17/354B60K17/356B60K17/3515F16D11/10F16D11/14F16D28/00
Inventor C·霍扎普法尔
Owner AUDI AG