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A steerable vehicle and a method for controlling the same

A technology for vehicles and steering devices, applied in computer program products and storage media for computers, computer programs, and steerable vehicles, and can solve problems such as increased tire wear and increased fuel consumption.

Active Publication Date: 2013-11-06
VOLVO LASTVAGNAR AB
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Said wheel slip leads to increased fuel consumption and increased tire wear

Method used

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  • A steerable vehicle and a method for controlling the same
  • A steerable vehicle and a method for controlling the same
  • A steerable vehicle and a method for controlling the same

Examples

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Embodiment Construction

[0045] Figure 1a An embodiment of the invention is disclosed wherein a vehicle 1 with all wheel drive and Ackermann steering comprises: a front axle 2 with front driven wheels 3; and two rear axles with driven wheels 6 and 7 Bridges (bogies) 4 and 5. Both said rear axles are driven in a known manner, in the example shown here by a first propulsion unit 8 which can be an internal combustion engine. The internal combustion engine drives the rear wheels via a transmission 9 , a drive shaft 10 and differentials 11 , 12 and 13 . Thus, the output torque from the first propulsion unit is evenly distributed between the rear axles 4 and 5 and between the rear wheels 6 and 7, respectively. According to the prior art, when a vehicle with Ackermann steering is cornering, the wheels will not follow the same trajectory, which means that the wheels will roll at different wheel speeds. To this end, the differential 12 is arranged to compensate for the speed difference between the two rear ...

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PUM

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Abstract

A method and device for controlling wheel speed individually for each driven wheel (3, 6, 7, 23, 27, 26, 32, 33, 34) in a steerable vehicle (1, 21, 31, 85) comprising a front axle (2, 22, 81) and at least two rear axles (4, 5, 25, 82, 83) and having all wheel drive, said method comprising the steps of: -registering parameters and value of said parameters: a. steering angle of the vehicle, b. wheelbase of the vehicle and c. wheel track of the vehicle; -based upon said parameter values continuously during vehicle traveling calculating a wheel speed for each of said driven wheel which will minimize wheel slip; -controlling wheel speed individually for each said driven wheel in accordance with said calculated wheel speeds and; -if said wheelbase is altered, then automatically registering said altered wheelbase value and based on said new prevailing parameter values recalculating said wheel speeds for each driven wheel accordingly.

Description

technical field [0001] The invention relates to a steerable vehicle according to the preamble of claim 1 attached hereto. In particular, the present invention is to be applied to the automobile related field, and is intended to be used as a device for individually controlling the wheel speed for each driven wheel of said vehicle. The invention also relates to a method intended for such a steerable vehicle according to the preamble of claim 10 attached hereto. [0002] The invention also relates to a computer program, a computer program product and a storage medium for a computer, all of which are used on a computer to carry out the method. Background technique [0003] For example, a truck may be equipped with a 6x6 wheel powertrain, which means that the truck has 6 wheels and all wheels are driven. The front axle can have Ackermann steering to steer the truck. The two rear axles can be driven via propeller shafts and three differentials which compensate for the differenc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B62D7/14B62D21/14
CPCY02T10/6243B60W2520/26B60W2720/28B60Y2200/14Y02T10/6265B60K6/448B60K6/52B60W30/188B60W2540/18Y02T10/62
Inventor 莱娜·拉松简·欧勒贝格艾尔弗雷德·约翰松
Owner VOLVO LASTVAGNAR AB
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