Device and method for improving the performance of an antilock braking and Anti-slip regulation of a vehicle

An anti-lock braking, vehicle technology, applied in the direction of brake components, brakes, brake types, etc., can solve problems such as tire wear, data errors, and impossible to accurately detect

Active Publication Date: 2018-10-23
ITT ITAL SRL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this method has not yet had a practical application, especially considering the fact that the measurable forces are extremely small compared to the forces acting on the wheels while driving the vehicle and thus almost impossible to detect accura

Method used

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  • Device and method for improving the performance of an antilock braking and Anti-slip regulation of a vehicle
  • Device and method for improving the performance of an antilock braking and Anti-slip regulation of a vehicle
  • Device and method for improving the performance of an antilock braking and Anti-slip regulation of a vehicle

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Embodiment Construction

[0042] With reference to the cited figures, an apparatus and method for improving the performance of an anti-lock braking (ABS) and anti-skid regulation (ASR) system of a vehicle includes at least an oil or air hydrodynamic system for controlling brake pressure, the The oil or air fluid power system consists at least of an ABS management control unit denoted 2 and possibly an ASR management control unit 3 , a brake servo unit 4 and a hydraulic oil or air pressure pump 5 . The brake system usually also includes solenoid valves and lines for oil or air and at least a tone wheel 50 and a tachometer sensor 51 , one for each wheel 9 in vehicles equipped with ABS.

[0043] In the following, application of the invention to ABS systems will be considered on the premise that the same characteristics and claims apply also to ABS / ASR systems.

[0044] Furthermore, in the following, reference will be made to motor vehicles equipped with disc brakes, but this applies to any type of vehicle...

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Abstract

Device for improving the performance of an antilock braking (ABS) and/or anti-slip regulation (ASR) and/or electronic stability control (ESC) system of a vehicle comprising at least a fluid-dynamic system for controlling the braking pressure composed of at least one standard ABS management control unit and a brake-servo unit and a fluid pressure pump, solenoid valves connected to pipes for oil orair and at least phonic wheels and tachometer sensors respectively present one for each wheel of the vehicle, the device comprises additional intelligent sensors associated with at least one of the braking pads acting upon the braking disk of each wheel in order to collect additional data and at least one dedicated ECU control unit for managing said additional data and interacting with at least said ABS control unit. The method consists in detecting, by means of the pad and the dedicated control unit, the actual value of the tire-ground coefficient of friction that is constantly updated duringbraking using the braking torque data derived from the braking pad in order to adjust the braking pressure profile to the value of the actual coefficient of friction present between the tire and theground during the braking of the vehicle.

Description

technical field [0001] As is well known, the anti-lock braking system (ABS) is designed to avoid locking of the wheels of the vehicle in response to excessive actuation of the service brake, especially on slippery surfaces, thus ensuring the driving of any type of vehicle within the limits of physical possibility Take control. Background technique [0002] Furthermore, in the case of the ABS system, the utilization of the adhesion between the tires and the ground is improved, thus optimizing the vehicle's deceleration characteristics and braking distances. [0003] It should also be taken into account that during a braking event on a slippery surface, the braking force transmitted by the braking system to the wheels of the vehicle tends to exceed the value of the friction force between the tire and the ground due to the reduced value of the friction force between the tire and the ground, The result is wheel lock. [0004] In this case the tires slide against the ground pur...

Claims

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Application Information

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IPC IPC(8): B60T8/171B60T8/1761B60T8/172
CPCB60T8/171B60T8/172B60T8/17616B60T2210/124B60T8/17636B60T8/52F16D65/092F16D66/00B60T2270/10B60T2270/20F16D2066/005
Inventor 斯特凡诺·塞拉卢卡·马蒂诺托达妮埃莱·唐泽利马尔科·泰拉诺瓦
Owner ITT ITAL SRL
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