WO2011069858A1 - Système de freinage assisté avec assistance de direction - Google Patents

Système de freinage assisté avec assistance de direction Download PDF

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Publication number
WO2011069858A1
WO2011069858A1 PCT/EP2010/068428 EP2010068428W WO2011069858A1 WO 2011069858 A1 WO2011069858 A1 WO 2011069858A1 EP 2010068428 W EP2010068428 W EP 2010068428W WO 2011069858 A1 WO2011069858 A1 WO 2011069858A1
Authority
WO
WIPO (PCT)
Prior art keywords
valve
pressure
brake
shift
pedal
Prior art date
Application number
PCT/EP2010/068428
Other languages
English (en)
Inventor
Martin Brenninger
Klaus Brugger
Hans-Peter Zeiler
Original Assignee
Agco Gmbh
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 Agco Gmbh filed Critical Agco Gmbh
Priority to EP10781913.8A priority Critical patent/EP2509834B1/fr
Priority to US13/514,323 priority patent/US8979216B2/en
Publication of WO2011069858A1 publication Critical patent/WO2011069858A1/fr

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
    • B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
    • B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
    • B60T13/58—Combined or convertible systems
    • B60T13/64—Combined or convertible systems both single and multiple, e.g. single and tandem
    • 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
    • B60T11/00—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant
    • B60T11/10—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant transmitting by fluid means, e.g. hydraulic
    • B60T11/16—Master control, e.g. master cylinders
    • B60T11/20—Tandem, side-by-side, or other multiple master cylinder units
    • B60T11/21—Tandem, side-by-side, or other multiple master cylinder units with two pedals operating on respective circuits, pressures therein being equalised when both pedals are operated together, e.g. for steering
    • 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
    • B60T8/24—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 vehicle inclination or change of direction, e.g. negotiating bends
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D11/00—Steering non-deflectable wheels; Steering endless tracks or the like
    • B62D11/02—Steering non-deflectable wheels; Steering endless tracks or the like by differentially driving ground-engaging elements on opposite vehicle sides
    • B62D11/06—Steering non-deflectable wheels; Steering endless tracks or the like by differentially driving ground-engaging elements on opposite vehicle sides by means of a single main power source
    • B62D11/08—Steering non-deflectable wheels; Steering endless tracks or the like by differentially driving ground-engaging elements on opposite vehicle sides by means of a single main power source using brakes or clutches as main steering-effecting means

Definitions

  • Such a power braking system only needs the use of one relay valve, thus making the system significantly less complex and cheaper and due to the use of the shuttle valve also avoids the application of different braking pressure to the brakes when both pedals are operated and no steering assistance is required.
  • each respective brake pedal may physically generate a pilot pressure (e.g using a master cylinder) which is fed to the shuttle valve and the respective shift valve.
  • operation of each respective brake pedal may open a respective initial control valve which provides a proportionate pilot pressure to the shuttle valve and the respective shift valve, each control valve supplying the proportionate pilot pressure from a pressurised pressure source (e.g. the same or a further pressure accumulator).
  • a pressurised pressure source e.g. the same or a further pressure accumulator
  • the single relay valve may be a proportionate flow control valve operated by the pilot pressure determined by the operation of the pedals.
  • Each initial control valve may also be a proportionate flow control valve operated by movement of the associated brake pedal.
  • Figure 2 shows a schematic view of a vehicle power braking system in accordance with the present invention in which the initial actuating pressure is generated by opening a valve to allow the passage of pressurised fluid from an associated reservoir.
  • a relay valve means in the form of a three position proportionate flow valve
  • Each shift valve 17 and 18 is connected with its respective brake operating pedal 14 and 15 via respective pilot lines 19 and 20.
  • pilot lines 19 and 20 are interconnected by a shuttle valve 21 which includes a valve member 22 which allows communication of the higher of the two pressures generated by the operation of pedal 14 and 15 to actuate relay valve 16 via line 23.
  • shift valve 18 As only shift valve 18 is receiving pilot pressure via line 20 the associated shift valve moves to the right, as viewed in Figure 1, against the action of bias 18a and thus directs the pressure inline 25 to the right-hand brake 12 so that only the right-hand brake is applied to assist a turn to the right.
  • valves 21, 17 and 18 could be provided in a single valve block.
  • the present invention thus provides a vehicle power braking system which is simpler than the prior art systems due to the use of a single relay valve 16 and which also, by the use of the shuttle valve 21, ensures that when both brake pedals are operated the relay valve operates in response to the highest pilot pressure generated by the two pedals thus ensuring that both brakes receive the same brake applying pressure.
  • the present invention thus avoids the previously described disadvantages of the prior art vehicle power braking systems.

Abstract

La présente invention concerne un système de freinage assisté de véhicule présentant des freins gauche et droit séparés (11, 12) actionnables depuis une source de fluide sous pression (13) par le biais d'un moyen de soupape de relais (16) commandé par des pédales d'actionnement des freins gauche et droit séparées (14, 15) pour générer l'assistance de direction pendant un virage. Le moyen de soupape de relais distribue une pression d'actionnement de frein proportionnelle à l'actionnement de la pédale d'actionnement de frein associée à des soupapes de changement de vitesse gauche et droite séparées (17, 18), chaque soupape de changement de vitesse étant raccordée à la pédale d'actionnement respective (14, 15) par une conduite de pilotage respective (19, 20), de sorte que lorsque chaque pédale est actionnée, la soupape de changement de vitesse associée est ouverte par la pression de la conduite de pilotage respective pour fournir la pression proportionnelle depuis le moyen de soupape de relais vers le frein respectif (11, 12). Le moyen de soupape de relais comprend une soupape de relais unique (16) qui alimente les deux soupapes de changement de vitesse (17, 18), et les conduites de pilotage (19, 20) sont raccordées entre elles par le biais d'un sélecteur de circuit (21, 22), de sorte que la pression pilote la plus élevée générée par l'actionnement des pédales de frein (14, 15) est appliquée à la soupape de relais unique (16) de sorte que chaque soupape de changement de vitesse reçoive la même pression d'application de frein proportionnelle à ladite pression pilote la plus élevée.
PCT/EP2010/068428 2009-12-08 2010-11-29 Système de freinage assisté avec assistance de direction WO2011069858A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP10781913.8A EP2509834B1 (fr) 2009-12-08 2010-11-29 Systeme de servofreinage avec assistance de conduite
US13/514,323 US8979216B2 (en) 2009-12-08 2010-11-29 Power braking system with steering assist

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0921433.9 2009-12-08
GB0921433A GB2476036A (en) 2009-12-08 2009-12-08 Power braking system with steering assist

Publications (1)

Publication Number Publication Date
WO2011069858A1 true WO2011069858A1 (fr) 2011-06-16

Family

ID=41642070

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2010/068428 WO2011069858A1 (fr) 2009-12-08 2010-11-29 Système de freinage assisté avec assistance de direction

Country Status (4)

Country Link
US (1) US8979216B2 (fr)
EP (1) EP2509834B1 (fr)
GB (1) GB2476036A (fr)
WO (1) WO2011069858A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103332219A (zh) * 2013-06-27 2013-10-02 三一重型装备有限公司 梭车及其液压转向系统
EP3023310A1 (fr) * 2014-08-05 2016-05-25 Deere & Company Système de commande de frein de véhicule

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2969094B1 (fr) * 2010-12-20 2012-12-21 Poclain Hydraulics Ind Valve de freinage amelioree
GB201322919D0 (en) * 2013-12-23 2014-02-12 Agco Int Gmbh Brake arrangement
EP3265349B1 (fr) 2015-03-04 2021-03-31 AGCO International GmbH Système de freinage
US9637098B2 (en) * 2015-07-14 2017-05-02 Deere & Company Vehicle brake system
US9873415B2 (en) * 2016-02-23 2018-01-23 Cnh Industrial America Llc System for providing speed-dependent control of a brake of a hauled unit of a work vehicle and related valve assembly
US10173652B2 (en) * 2016-07-28 2019-01-08 Deere & Company Hydraulic trailer brake circuit for adjustable gain and improved stability
FR3064963B1 (fr) * 2017-04-07 2019-06-14 Poclain Hydraulics Industrie Circuit de freinage hydraulique ameliore
DE202019101586U1 (de) * 2019-02-12 2020-05-13 Ipgate Ag Packaging für ein Bremssystem
DE102020125639A1 (de) * 2020-10-01 2022-04-07 Zf Cv Systems Global Gmbh Fremdkraftbremsanlage eines Fahrzeugs und Verfahren zu deren Steuerung

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1104864A (en) * 1964-10-28 1968-03-06 Bofors Ab Device for steering a track-laying vehicle
US3640067A (en) * 1969-05-08 1972-02-08 Girling Ltd Two-pedal hydraulic braking system
DE3242982A1 (de) * 1982-11-20 1984-05-24 Alfred Teves Gmbh, 6000 Frankfurt Hydraulische brems- und lenkbremsanlage

Family Cites Families (7)

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Publication number Priority date Publication date Assignee Title
US2911168A (en) * 1955-10-25 1959-11-03 William J Moreland Differentially controlled twin wheel landing gear
US3120244A (en) * 1961-05-05 1964-02-04 Lambert & Brake Corp Control valve unit
WO1981000384A1 (fr) * 1979-08-13 1981-02-19 Caterpillar Tractor Co Systeme de freinage a anti-patinage selectif
FR2478020A1 (fr) * 1980-03-11 1981-09-18 Aerospatiale Procede et dispositif pour le freinage d'aeronefs a large voie roulant sur le sol
US4479563A (en) * 1982-11-26 1984-10-30 J. I. Case Company Crawler track transmission system
JP3618415B2 (ja) * 1995-09-05 2005-02-09 ヤンマー農機株式会社 作業用走行車両における制御装置
ITMO20030076A1 (it) * 2003-03-18 2004-09-19 Studio Tecnico 6M Srl Valvola di frenatura perfezionata.

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1104864A (en) * 1964-10-28 1968-03-06 Bofors Ab Device for steering a track-laying vehicle
US3640067A (en) * 1969-05-08 1972-02-08 Girling Ltd Two-pedal hydraulic braking system
DE3242982A1 (de) * 1982-11-20 1984-05-24 Alfred Teves Gmbh, 6000 Frankfurt Hydraulische brems- und lenkbremsanlage

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103332219A (zh) * 2013-06-27 2013-10-02 三一重型装备有限公司 梭车及其液压转向系统
EP3023310A1 (fr) * 2014-08-05 2016-05-25 Deere & Company Système de commande de frein de véhicule

Also Published As

Publication number Publication date
EP2509834A1 (fr) 2012-10-17
US20130127239A1 (en) 2013-05-23
GB0921433D0 (en) 2010-01-20
GB2476036A (en) 2011-06-15
EP2509834B1 (fr) 2013-09-04
US8979216B2 (en) 2015-03-17

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