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FR3146638B1 - A braking system and a vehicle - Google Patents

A braking system and a vehicle Download PDF

Info

Publication number
FR3146638B1
FR3146638B1 FR2302480A FR2302480A FR3146638B1 FR 3146638 B1 FR3146638 B1 FR 3146638B1 FR 2302480 A FR2302480 A FR 2302480A FR 2302480 A FR2302480 A FR 2302480A FR 3146638 B1 FR3146638 B1 FR 3146638B1
Authority
FR
France
Prior art keywords
slip
threshold
braking
application
selection
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
FR2302480A
Other languages
French (fr)
Other versions
FR3146638A1 (en
Inventor
Julien Sasso
Weiqiao Wang
Carqueijo Alex Patrao
Maxime Demandre
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Astemo Heilbronn GmbH
Hitachi Astemo France SAS
Original Assignee
Hitachi Astemo Heilbronn GmbH
Hitachi Astemo France SAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Astemo Heilbronn GmbH, Hitachi Astemo France SAS filed Critical Hitachi Astemo Heilbronn GmbH
Priority to FR2302480A priority Critical patent/FR3146638B1/en
Priority to PCT/EP2024/056778 priority patent/WO2024194132A1/en
Publication of FR3146638A1 publication Critical patent/FR3146638A1/en
Application granted granted Critical
Publication of FR3146638B1 publication Critical patent/FR3146638B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T7/00—Brake-action initiating means
    • B60T7/12—Brake-action initiating means for automatic initiation; for initiation not subject to will of driver or passenger
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
    • B60T17/18—Safety devices; Monitoring
    • B60T17/22—Devices for monitoring or checking brake systems; Signal devices
    • B60T17/221—Procedure or apparatus for checking or keeping in a correct functioning condition of brake systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
    • B60T8/17—Using electrical or electronic regulation means to control braking
    • B60T8/176—Brake regulation specially adapted to prevent excessive wheel slip during vehicle deceleration, e.g. ABS
    • B60T8/1761—Brake regulation specially adapted to prevent excessive wheel slip during vehicle deceleration, e.g. ABS responsive to wheel or brake dynamics, e.g. wheel slip, wheel acceleration or rate of change of brake fluid pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
    • B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
    • B60T8/88—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration with failure responsive means, i.e. means for detecting and indicating faulty operation of the speed responsive control means
    • B60T8/885—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration with failure responsive means, i.e. means for detecting and indicating faulty operation of the speed responsive control means using electrical circuitry
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T2270/00—Further aspects of brake control systems not otherwise provided for
    • B60T2270/40—Failsafe aspects of brake control systems
    • B60T2270/406—Test-mode; Self-diagnosis

Landscapes

  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Regulating Braking Force (AREA)
  • Braking Systems And Boosters (AREA)

Abstract

Un procédé de freinage dynamique d'une roue arrière de véhicule équipée d'un frein de stationnement électrique, par mise en œuvre d'un mode de freinage RWU, le mode de freinage RWU étant assuré en commandant le frein de stationnement en respectant les règles suivantes, alors que le glissement (13) de la roue est mesuré : - si le glissement (13) est inférieur à un premier seuil (3) prédéterminé, serrage progressif du frein jusqu'à ce que le glissement (13) devienne supérieur à ce premier seuil (3), - si le glissement (13) est supérieur à un deuxième seuil (4) prédéterminé, supérieur au premier seuil (3), desserrage progressif du frein jusqu'à ce que le glissement (13) devienne inférieur à ce deuxième seuil (4), - si le glissement (13) est supérieur au premier seuil (3) et inférieur au deuxième seuil (4), maintien du serrage à son niveau courant, le procédé étant caractérisé en ce qu'il consiste à exécuter au moins les trois étapes suivantes lors de chaque demande de freinage dynamique : - test : application d'un serrage de test à un niveau de serrage de test prédéterminé, puis attente pendant une durée d'observation, puis mesure du glissement (13), - sélection : si le glissement (13) mesuré est supérieur à une valeur de déclenchement prédéterminée, sélection d'un mode de freinage intermittent, sinon, sélection du mode de freinage RWU et - freinage : actionnement du frein de stationnement dans le mode sélectionné lors de l'étape de sélection. Figure pour l’abrégé : figure 7A method for dynamically braking a rear wheel of a vehicle equipped with an electric parking brake, by implementing an RWU braking mode, the RWU braking mode being ensured by controlling the parking brake in compliance with the following rules, while the slip (13) of the wheel is measured: - if the slip (13) is less than a first predetermined threshold (3), progressive application of the brake until the slip (13) becomes greater than this first threshold (3), - if the slip (13) is greater than a second predetermined threshold (4), greater than the first threshold (3), progressive release of the brake until the slip (13) becomes less than this second threshold (4), - if the slip (13) is greater than the first threshold (3) and less than the second threshold (4), maintaining the application at its current level, the method being characterized in that it consists in executing at least the following three steps during each dynamic braking request: - test: application of a test application at a test application level predetermined, then waiting for an observation time, then measuring the slip (13), - selection: if the slip (13) measured is greater than a predetermined trigger value, selection of an intermittent braking mode, otherwise, selection of the RWU braking mode and - braking: actuation of the parking brake in the mode selected during the selection step. Figure for abstract: figure 7

FR2302480A 2023-03-17 2023-03-17 A braking system and a vehicle Active FR3146638B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR2302480A FR3146638B1 (en) 2023-03-17 2023-03-17 A braking system and a vehicle
PCT/EP2024/056778 WO2024194132A1 (en) 2023-03-17 2024-03-14 Braking system and vehicle

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR2302480 2023-03-17
FR2302480A FR3146638B1 (en) 2023-03-17 2023-03-17 A braking system and a vehicle

Publications (2)

Publication Number Publication Date
FR3146638A1 FR3146638A1 (en) 2024-09-20
FR3146638B1 true FR3146638B1 (en) 2025-02-21

Family

ID=86851564

Family Applications (1)

Application Number Title Priority Date Filing Date
FR2302480A Active FR3146638B1 (en) 2023-03-17 2023-03-17 A braking system and a vehicle

Country Status (2)

Country Link
FR (1) FR3146638B1 (en)
WO (1) WO2024194132A1 (en)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004004992B4 (en) 2004-01-30 2008-03-13 Lucas Automotive Gmbh Method for operating the braking equipment of a vehicle
FR2903063A1 (en) 2006-06-28 2008-01-04 Renault Sas Wheel sliding detecting method for e.g. rear wheel drive motor vehicle, involves detecting reliable nature of absolute sliding of wheel of vehicle from estimated speed of vehicle, based on information about detected vehicle wheel sliding
DE102014220252A1 (en) * 2014-10-07 2016-04-07 Robert Bosch Gmbh Braking device for a motor vehicle and method for controlling the braking device
DE102018208877A1 (en) * 2018-06-06 2019-12-12 Robert Bosch Gmbh Method for operating a brake system of a motor vehicle, and control unit and brake system
CN112744195B (en) * 2019-10-31 2025-02-11 罗伯特·博世有限公司 Vehicle braking control method and system, vehicle, and computer-readable storage medium
KR20210148633A (en) * 2020-06-01 2021-12-08 현대모비스 주식회사 Electrohydraulic Brake
KR20220086046A (en) * 2020-12-16 2022-06-23 현대자동차주식회사 Method for controlling dynamic braking for electronic parking brake

Also Published As

Publication number Publication date
FR3146638A1 (en) 2024-09-20
WO2024194132A1 (en) 2024-09-26

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