Motor vehicle and method for operating a motor vehicle

A technology of motor vehicles and operating information, applied in electric vehicles, electric vehicle charging technology, vehicle components, etc., can solve the problems of efficiency loss and limit the energy efficiency of motor vehicles, and achieve the effect of less consumption

Active Publication Date: 2021-01-08
AUDI AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, in the case of a cold start of a motor vehicle, significant efficiency losses occur at low ambient temperatures, which limit the energy efficiency of the motor vehicle

Method used

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  • Motor vehicle and method for operating a motor vehicle
  • Motor vehicle and method for operating a motor vehicle

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0025] figure 1 A schematic diagram of a motor vehicle 1 is shown, which has a regenerative brake 2 which feeds regenerative power into a high-voltage on-board electrical system 4 including a battery 3 when the motor vehicle 1 decelerates. The high-voltage on-board electrical system is also coupled via a DC converter 5 to a low-voltage on-board electrical system 6 , which supplies a number of consumers of the motor vehicle (not shown) and has, for example, 12, 24, 36 or 48 volts. rated voltage.

[0026] The motor vehicle 1 also includes a further DC converter 7 which is connected on the input side to the regenerative brake 2 and on the output side to the heating device 8 . The heating device 8 has a plurality of heating elements 9 thermally coupled to a plurality of powertrain components 10 , 11 and a plurality of wheel supports 12 , only one of which is shown for reasons of clarity. The powertrain component 10 is here the transmission of the motor vehicle 1 , and the powert...

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Abstract

The invention relates to a motor vehicle having at least one drive train component (10, 11) and / or at least one wheel support (12), wherein a regenerative brake (2), a DC converter (7) and a The heating device (8) for heating the power train components (10, 11) and / or the wheel support (12), the DC converter is connected on the input side to the regenerative brake (2) and on the output side to the heating device ( 8) connected and designed to reduce the voltage level of the regenerative power provided by the regenerative brake.

Description

technical field [0001] The present invention relates to a motor vehicle comprising at least one powertrain component and / or at least one wheel bearing. Background technique [0002] A motor vehicle includes a powertrain which transmits, via powertrain components, drive power generated by an internal combustion engine and / or an electric machine to wheels supported by wheel supports and thus serves to move the motor vehicle on the ground. In order to reduce friction in the drive train components and / or in the wheel supports, lubricants are used, which significantly improve the efficiency of the power transmission. [0003] However, the lubricants generally used have a higher viscosity at low temperatures than at higher temperatures. For example, in the case of a cold start of a motor vehicle, significant efficiency losses occur at low ambient temperatures, which limit the energy efficiency of the motor vehicle. SUMMARY OF THE INVENTION [0004] It is therefore an object of...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): B60L7/10B60R16/023B60R17/00
CPCB60L7/10B60R16/023B60R17/00B60L2210/12B60L2240/36B60L2240/545B60L2240/662Y02T10/72Y02T90/16
InventorA·科普D·德雷埃尔
OwnerAUDI AG