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Control device for improving the traction of a vehicle

A technology for vehicle control and control equipment, which is applied to control devices, vehicle components, brakes, etc., and can solve problems such as difficulty, increasing vehicle weight, and increasing costs.

Active Publication Date: 2009-10-07
PEZHO SITROEN AUTOMOBILS SA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main disadvantages of these solutions are: very significantly increased cost, significantly increased vehicle weight, complexity in their development and perfection, and geometrical difficulties in integrating them into small and medium-sized vehicles

Method used

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  • Control device for improving the traction of a vehicle
  • Control device for improving the traction of a vehicle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0046] figure 1 A schematic overview of the control device according to the invention is shown. The equipment includes:

[0047] A selection device 10 (indicator or selector) that allows the driver to select the road condition of the vehicle, such as all-terrain, snow, sand or other conditions;

[0048] - A state machine 20 that uses road condition information from the selection means (all terrain, snow, sand or other conditions) and information from sensors 12 equipped on the vehicle, in particular wheel speed Vr, yaw rate Vlc, lateral acceleration Acy and longitudinal acceleration Acx, master cylinder pressure Pm for activating algorithms, some of which are specific;

[0049] - Control modules 30 each comprising algorithms corresponding to the control strategies associated with the different states of said state machine and which define engine torque and wheel brake commands. For example, a first module 32 defines control strategies for normal terrain or roads, a second m...

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PUM

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Abstract

The invention relates to a vehicle control device comprising: - means (10, 20, 30) for generating various control modes dependent on parameters concerned with the way in which the vehicle is moving such as, rotational speed of the wheels, yaw rate, lateral acceleration and longitudinal acceleration, pressure on the brake controls exerted by the driver, and a vehicle life situation mode chosen by the driver from various preestablished life situations corresponding to different types of road and terrain and different vehicle rolling conditions, - estimating means for estimating the vehicle lifesituation, the device being configured to determine an optimum control mode from among the various control modes that can be generated by the device as a function of the estimated vehicle life situation and the life situation mode chosen by the driver.

Description

technical field [0001] The invention relates to a device for improving the traction of a motor vehicle on roads or terrains having different characteristics and in different road conditions. [0002] The invention relates in particular but not exclusively to a device for controlling a vehicle with two drive wheels (4x2). Background technique [0003] The road conditions involved are moving forward or reversing on roads or terrains with the following conditions, including: [0004] - muddy roads, grass, rutted roads, swamps (all-terrain driving), [0005] - sand, [0006] - snow or ice, [0007] and various slopes. [0008] The systems used on vehicles in these road conditions are: [0009] -4x4 drive (four drive wheels) [0010] - or specific equipment on 4x2 vehicles (two drive wheels): baseline limited-slip or limited-slip differential. [0011] Anti-skid devices, also denoted by the abbreviation ASR (Anti-skid Control System), are intended to improve the driving tr...

Claims

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Application Information

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IPC IPC(8): B60K23/04B60T8/1755B60K23/08B60W10/12B60W10/18B60W30/18B60W40/06
CPCB60T8/175B60W2540/04B60T8/17551B60W10/119B60W40/068B60W10/184B60W30/18009B60W2550/14B60W10/16B60T8/1706B60W2720/30B60W30/182B60W2552/00B60W2540/215B60W50/082B60W50/085B60W2552/05
Inventor 文森·阿巴蒂菲利普·布莱塞达米·荣格诺克斯
Owner PEZHO SITROEN AUTOMOBILS SA
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