Method for operating a motor vehicle, control unit and motor vehicle

A technology of motor vehicles and controllers, which is applied in the field of motors, motor vehicles and such controllers, can solve problems such as surface damage, achieve the effect of preventing slipping, simple methods and methods, and avoiding unsafe driving conditions.

Active Publication Date: 2018-10-23
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such traction losses can occur especially in the case of uneven ground and surfaces with different friction values ​​and lead to damage on sensitive ground surfaces

Method used

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  • Method for operating a motor vehicle, control unit and motor vehicle
  • Method for operating a motor vehicle, control unit and motor vehicle

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0017] figure 1 A motor vehicle 1 with a front wheel axle 2 and a rear wheel axle 3 is shown in a simplified top view. The two wheel axles 2 , 3 each have two drive wheels 4 , 5 or 6 , 7 . A drive machine 8 , 9 , 10 , 11 is assigned to each of the drive wheels 4 to 7 , which are each designed as an electric motor. The drive machines 8 to 11 are designed here close to the edge, in particular as wheel hub drives, which can transmit positive or negative drive torques directly or by means of transmission gears to the respectively assigned drive wheels 4 to 7. In order to actuate the drive machines 8 to 11 , there is a controller 12 which is connected to the drive machines 8 to 11 in terms of signaling. Furthermore, the drive machines 8 to 11 are connected via corresponding power electronics of the controller 12 to an electrical energy store 13 , which supplies the drive machines 8 to 11 with electrical energy for motorized operation or when driving The generators of machines 8...

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PUM

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Abstract

A method for operating a motor vehicle, which includes driven wheels and driving machines, each driven wheel being assigned a driving machine, especially a motor, respectively, the method including determining a setpoint total drive torque; measuring a current vehicle traveling speed, a current steering angle and, optionally, the wheel loads of all of the driven wheels; determining individual wheel speeds of motion of the driven wheels over the roadway as a function of the current vehicle traveling speed, the current steering angle, a chassis geometry of the motor vehicle and, optionally, thewheel loads; determining a setpoint rotational speed for each driven wheel as a function of the determined speeds of motion, and distributing the setpoint total drive torque to all driven wheels so that spinning of the specific driven wheel on the roadway is prevented; and controlling each driving machine to set the setpoint rotational speed at the specific driven wheel.

Description

technical field [0001] The invention relates to a method for operating a motor vehicle having a plurality of drive wheels and a plurality of drive machines, wherein a drive machine, in particular an electric machine, is assigned to each drive wheel. [0002] Furthermore, the invention relates to a control unit for operating a motor vehicle, which implements the above-mentioned method, as well as to a motor vehicle and such a control unit. Background technique [0003] Methods, controllers and motor vehicles of the type mentioned at the outset are known from the prior art. As motor vehicles continue to be electrified, the electrification of the drive train (Antriebsstrangs) is also increasing. It is known to provide, instead of an internal combustion engine, one or more electric machines as drive machines. Alternatively, it is also known to provide one or more electric machines for the internal combustion engine. There are also more and more concepts that have wheel-indivi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60K28/16B60K7/00
CPCB60K7/00B60K28/16B60K17/356B60K7/0007B60L3/102B60L3/106B60L2240/12B60L2240/14B60L2240/22B60L2240/24B60L2240/421B60L2240/423B60L2240/461B60L2240/463Y02T10/64
Inventor M.诺德曼
Owner ROBERT BOSCH GMBH
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