[go: up one dir, main page]

WO2003066401A1 - Freinage anti-blocage pour vehicule a roues directrices - Google Patents

Freinage anti-blocage pour vehicule a roues directrices Download PDF

Info

Publication number
WO2003066401A1
WO2003066401A1 PCT/GB2003/000426 GB0300426W WO03066401A1 WO 2003066401 A1 WO2003066401 A1 WO 2003066401A1 GB 0300426 W GB0300426 W GB 0300426W WO 03066401 A1 WO03066401 A1 WO 03066401A1
Authority
WO
WIPO (PCT)
Prior art keywords
axle
pressure
wheels
pressures
modulators
Prior art date
Application number
PCT/GB2003/000426
Other languages
English (en)
Inventor
Colin Ross
Original Assignee
Knorr-Bremse Systems For Commercial Vehicles Limited
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 Knorr-Bremse Systems For Commercial Vehicles Limited filed Critical Knorr-Bremse Systems For Commercial Vehicles Limited
Priority to EP03737351A priority Critical patent/EP1509433A1/fr
Priority to AU2003244449A priority patent/AU2003244449A1/en
Publication of WO2003066401A1 publication Critical patent/WO2003066401A1/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
    • 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
    • B60T8/1701—Braking or traction control means specially adapted for particular types of vehicles
    • B60T8/1708—Braking or traction control means specially adapted for particular types of vehicles for lorries or tractor-trailer combinations
    • 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
    • B60T8/1764—Regulation during travel on surface with different coefficients of friction, e.g. between left and right sides, mu-split or between front and rear

Definitions

  • This invention relates to an anti-lock braking system and an axle control valve for a vehicle with self-steerable wheels, especially but not exclusively a trailer vehicle with compressed air braking.
  • the invention is also applicable to a vehicle with force-steered wheels.
  • wheels of a the vehicle of a steerable axle may be provided with means whereby when the vehicle is passing along a curved roadway, pivotal movement of the wheels of the steerable axle out of parallel with other wheels improves lateral stability and reduces tyre scrub.
  • Such steerable wheels may be on a rigid axle or suspended independently.
  • self-steerable wheels are provided with independent anti-lock control of their brakes the self-steer action, especially when being governed by wheel reaction forces with the roadway, can itself result in tyre wear and vehicle instability whilst an anti-lock mode is operating, due to differential braking forces and reactions at opposite wheels of the self-steerable axle.
  • European Patent No. 0754609 proposes an anti-skid compressed air braking system for a trailer vehicle with a common brake pressure modulator valve which responds to respective wheel speed sensors at opposite sides of an allotted braked axle having anti-lock control via separate modulators, the common modulator providing the same brake pressure to both wheels of the self-steerable axle.
  • the present invention seeks to provide an alternative system to the foregoing and having an axle control valve not requiring such a common modulator.
  • an anti-lock braking system for a wheeled vehicle having a first axle with speed sensors for braked wheels thereof on opposite sides of the vehicle and an electronic control unit (ECU) which controls fluid pressure modulators to selectively control the respective brake pressures applied to brakes of said wheels in the event of incipient skidding being sensed, the system including means for directly applying output fluid braking pressure from either or both said modulators to brakes of wheels of a further steerable axle of the vehicle and control means whereby at onset of an anti-lock mode accompanied by differential pressures from said modulators the higher of the braking pressures is isolated from the brakes of the steerable axle.
  • ECU electronice control unit
  • control means is provided by an axle control valve with means to receive the respective output pressures of the brake pressure modulators and communicate them to a delivery port the axle control valve including respective solenoid valves controllable by signals from an anti-lock ECU to isolate the higher said output pressure from the delivery port.
  • Fig 1 illustrates in schematic form interconnected components of a compressed air braking system of wheels of a trailer vehicle having three axles, one of which is a self-steered axle;
  • Fig 2 illustrates diagramatically the example of an axle control valve for the braking system of Fig 1;
  • Fig 3 illustrates, in graphical manner, operation of the axle control valve assembly of Fig 2
  • the compressed air braking system of a two line trailer with electronic braking and anti-lock includes control and supply line couplers 1 and 2 respectively and a relay emergency valve 3 (of known form but which may be optional with EBS) via which a compressed air reservoir 4 is charged from a tractor system (not shown).
  • the trailer has first, second and third axles with respective pairs of compressed air operable wheel brake actuators 12L, 12R and 13L, 13R and 14L, 14R.
  • the third axle is self-steerable.
  • Compressed air pressure graduable according to trailer control line pressure from the reservoir 4 is relayed via valve 3, a load control valve 5 (which again may not be a requirement with EBS) and respective left and right hand anti- lock pressure modulators 6L and 6R to the respective left and right hand brake actuators 12, 13.
  • the actuators 14L and 14R are brake actuators of the steerable axle wheels which self-steer according to the reaction between the tyres thereof and the rolling surface to improve stability and minimise tyre wear.
  • 14L and 14R are normally supplied with substantially equal brake pressure via an axle control valve 15.
  • Valve 15 is supplied directly with pressures from both modulators 6L and 6R. In the present example these modulator pressures are controlled by an electronic ABS control unit (ECU) 16.
  • ECU electronic ABS control unit
  • axle control valve 15 operates to isolate from actuators 14R and 14L the highest modulator output. These actuators can therefore apply only equal and reduced brake forces, to both wheels of the steered axle corresponding to brake pressure at the lowest adhesion side of the first axle.
  • the axle control valve 15 includes valve arrangements with respective two-state solenoid valves 20L and 20R which are identical and are each shown in an unenergised state wherein the areas above the diaphragms of respective open/closed diaphragm valves 23L and 23R are vented, trailer reservoir pressure at a port 21 being prevented from influencing respective diaphragm valves 23L and 23R.
  • equal pressures at ports 22L and 22R and interconnection 24 from the ABS modulators for the middle axle are normally permitted to reach common output connections 25L and 25R to the brake actuators 13L and 13R of the self-steered axle.
  • solid curves (a) and (b) respectively represent curves of wheel speed against time for right and left hand wheels of the first and second axles (the non — steering axles of the trailer.
  • the broken curve (c) represents brake pressure to the right and the left hand wheel brake actuators of the third axle (the steerable axle) of the trailer and wheel speed is represented by the solid line curve (d) .
  • an electronic control signal (e) is applied by the ECU to solenoid valve 20R to close the diaphragm valve 23R to pressure from modulator 6R.
  • the pressure applied directly from only modulator 6L is thereby permitted to be the sole controlling pressure of the actuators 14R and 14L of the wheels of the steerable axle over a period DEF (curve c).
  • Corresponding wheel speeds for the wheels of the steerable axle under braking are indicated diagramatically in curve (d) assuming identity of performance (which may not be so) between the steered wheels but those are simply exemplary.
  • the actuators may be provided with actuator pressure through a common delivery port and via a common quick release valve.
  • a common quick release valve may be integrated with an axle control valve unit according to the invention if so required.
  • axle control valve Whilst the axle control valve described in the foregoing with reference to Fig 2 and Fig 3 of the accompanying drawings is described more especially in relation to anti-lock control of brakes of self-steerable axle during anti-lock braking of a vehicle, such an axle control valve may be employed in force-steerable axle arrangements. Moreover, such an axle control valve may be provided to afford simplified anti-lock control of brake pressure of wheels of a lifting axle the tyres of wheels of which contact the rolling surface only when the vehicle is heavy-laden. By such means the size of actuators to one or more other axles may be less than otherwise required, whilst providing extended distribution of braking of the vehicle.

Landscapes

  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Regulating Braking Force (AREA)

Abstract

L'invention concerne un système de freinage anti-blocage destiné à un véhicule semi-remorque routier commercial équipé de freins à air comprimé et comportant un essieu autovireur doté de tels freins, dans lequel une unité électronique de commande (16) permet de commander sélectivement les pressions de freinage de chaque côté d'un autre essieu de freinage selon l'adhérence de surface de roulement différentielle afin de réduire le patinage au moyen de modulateurs de pression respectifs. Les pressions de sortie de ces modulateurs (6L, 6R) sont appliquées, de façon additionnelle, directement via une vanne de commande d'essieu (15) aux vérins de frein de roues de l'essieu autovireur et la vanne de commande d'essieu comprend un moyen (20L, 20R), commandé électriquement par l'unité électronique de commande, qui permet d'isoler la plus grande des sorties des modulateurs des freins de roue respectifs de l'essieu autovireur au démarrage de la commande anti-blocage, ce qui tend à égaliser les pressions de freinage aux roues de l'essieu autovireur qui correspondent à la pression du modulateur du côté d'adhérence faible de l'autre essieu.
PCT/GB2003/000426 2002-02-02 2003-02-03 Freinage anti-blocage pour vehicule a roues directrices WO2003066401A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP03737351A EP1509433A1 (fr) 2002-02-02 2003-02-03 Freinage anti-blocage pour vehicule a roues directrices
AU2003244449A AU2003244449A1 (en) 2002-02-02 2003-02-03 Anti-lock braking for a vehicle with steerable wheels

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0202481A GB2384838B (en) 2002-02-02 2002-02-02 Anti-lock braking for a vehicle with steerable wheels
GB0202481.8 2002-02-02

Related Child Applications (2)

Application Number Title Priority Date Filing Date
PCT/GB2001/004866 Continuation-In-Part WO2002036170A2 (fr) 1996-10-17 2001-11-02 Systeme vecteur
US10/716,725 Continuation-In-Part US20040076613A1 (en) 1996-10-17 2003-11-19 Vector system

Publications (1)

Publication Number Publication Date
WO2003066401A1 true WO2003066401A1 (fr) 2003-08-14

Family

ID=9930313

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2003/000426 WO2003066401A1 (fr) 2002-02-02 2003-02-03 Freinage anti-blocage pour vehicule a roues directrices

Country Status (4)

Country Link
EP (1) EP1509433A1 (fr)
AU (1) AU2003244449A1 (fr)
GB (1) GB2384838B (fr)
WO (1) WO2003066401A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107901896A (zh) * 2017-12-20 2018-04-13 中车长春轨道客车股份有限公司 一种列车防抱死系统及防止列车车轮抱死的方法

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2500221A (en) * 2012-03-14 2013-09-18 Tractair Ltd Vehicle brake apparatus having a trailer with an electro-pneumatic valve, controlled based on a vehicle parameter signal
GB2597765B (en) * 2020-08-04 2024-10-09 Haldex Ab A braking system

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2933085A1 (de) * 1979-08-16 1981-02-26 Bosch Gmbh Robert Antiblockierregelsystem
DE3026254A1 (de) * 1980-07-11 1982-02-11 Wabco Fahrzeugbremsen Gmbh, 3000 Hannover Antiblockiersystem
EP0058773A1 (fr) * 1981-02-23 1982-09-01 WABCO Westinghouse Fahrzeugbremsen GmbH Installation de frein à air comprimé pour véhicules routiers à suspension pneumatique ayant trois et multiples essieux
DE3138834A1 (de) * 1981-01-21 1983-04-14 Wabco Westinghouse Fahrzeugbremsen GmbH, 3000 Hannover Antiblockiersystem, insbesondere fuer ein mehrachs-fahrzeug
DE3840336A1 (de) * 1987-12-11 1989-06-22 Volkswagen Ag Hydraulisches bremssystem fuer kraftfahrzeuge und select-low-ventileinrichtung zum einsatz in einem solchen bremssystem
EP0754609A2 (fr) * 1995-07-15 1997-01-22 Grau Limited Système de freinage anti-patinage pour une remorque comportant au moins un essieu auto-directeur
EP0958209A1 (fr) 1996-04-18 1999-11-24 Scootabout International Limited Procede et appareil de transmission de puissance d'entrainement
DE10026689A1 (de) * 2000-05-30 2001-12-20 Knorr Bremse Systeme ABS-Bremsanlage für Fahrzeuge mit einer Zusatzachse

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2933085A1 (de) * 1979-08-16 1981-02-26 Bosch Gmbh Robert Antiblockierregelsystem
DE3026254A1 (de) * 1980-07-11 1982-02-11 Wabco Fahrzeugbremsen Gmbh, 3000 Hannover Antiblockiersystem
DE3138834A1 (de) * 1981-01-21 1983-04-14 Wabco Westinghouse Fahrzeugbremsen GmbH, 3000 Hannover Antiblockiersystem, insbesondere fuer ein mehrachs-fahrzeug
EP0058773A1 (fr) * 1981-02-23 1982-09-01 WABCO Westinghouse Fahrzeugbremsen GmbH Installation de frein à air comprimé pour véhicules routiers à suspension pneumatique ayant trois et multiples essieux
DE3840336A1 (de) * 1987-12-11 1989-06-22 Volkswagen Ag Hydraulisches bremssystem fuer kraftfahrzeuge und select-low-ventileinrichtung zum einsatz in einem solchen bremssystem
EP0754609A2 (fr) * 1995-07-15 1997-01-22 Grau Limited Système de freinage anti-patinage pour une remorque comportant au moins un essieu auto-directeur
EP0958209A1 (fr) 1996-04-18 1999-11-24 Scootabout International Limited Procede et appareil de transmission de puissance d'entrainement
DE10026689A1 (de) * 2000-05-30 2001-12-20 Knorr Bremse Systeme ABS-Bremsanlage für Fahrzeuge mit einer Zusatzachse

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
MISCHKE,A.: "Aufbau undWirkung des Antiblockiersystems ABS für Nutzfahrzeuge", ATZ AUTOMOBILTECHNISCHE ZEITSCHRIFT., vol. 83, no. 9, 1 September 1981 (1981-09-01), FRANCKH'SCHE VERLAGSHANDLUNG. STUTTGART., DE, pages 439 - 446, XP002240739, ISSN: 0001-2785 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107901896A (zh) * 2017-12-20 2018-04-13 中车长春轨道客车股份有限公司 一种列车防抱死系统及防止列车车轮抱死的方法
CN107901896B (zh) * 2017-12-20 2020-10-16 中车长春轨道客车股份有限公司 一种列车防抱死系统及防止列车车轮抱死的方法

Also Published As

Publication number Publication date
GB0202481D0 (en) 2002-03-20
EP1509433A1 (fr) 2005-03-02
GB2384838A (en) 2003-08-06
AU2003244449A1 (en) 2003-09-02
GB2384838B (en) 2005-08-17

Similar Documents

Publication Publication Date Title
JP3116314B2 (ja) 昇降可能な後続車軸を持つ車両
JPH0620878B2 (ja) 自動車の推進制御装置
WO2007078795A2 (fr) Systeme de stabilite antiroulis a voie unique
US4740041A (en) Anti-locking brake control system for motor vehicles
JPH03169769A (ja) アンチスキッド制御装置
JPH04215551A (ja) 車両用のブレーキ装置
EP1185447B1 (fr) Systeme de freinage de vehicule a commande par fluide sous pression
EP0584829B1 (fr) Système de freinage à anti-blocage pour véhicules
EP0825940B1 (fr) Systeme de freinage antipatinage d'un vehicule
WO2003066401A1 (fr) Freinage anti-blocage pour vehicule a roues directrices
KR19990059732A (ko) 푸셔 액슬이 적용된 차량의 에이 비 에스/에이 에스 알 장치
EP0559151B1 (fr) Dispositif de contrôle de patinage pour véhicules avec plusieurs essieux
WO2003066402A9 (fr) Freins antiblocage pour vehicule a roues directrices
JPH07102802B2 (ja) トラクションスリップ制御付きブレーキシステム
GB2621839A (en) Trailer brake control system
JP3886265B2 (ja) 三軸車両のブレーキ装置
JP3396899B2 (ja) 制動力配分制御装置
EP0408351A1 (fr) Système de freinage antipatinage
JP3885362B2 (ja) 車両の制動制御装置
JP2567511Y2 (ja) 多軸車両用トラクションコントロール装置
JPH0717619Y2 (ja) 総輪駆動用アンチロックブレーキ装置
KR20000016823U (ko) 대형차량의 전륜 2축 에이.비.에스
JPH0272166U (fr)
JPS63305066A (ja) アンチスキッドブレ−キ回路
JPH0885429A (ja) 車両制動装置

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NO NZ OM PH PL PT RO RU SD SE SG SK SL TJ TM TN TR TT TZ UA UG US UZ VN YU ZA ZM ZW

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LU MC NL PT SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
WWE Wipo information: entry into national phase

Ref document number: 2003737351

Country of ref document: EP

WWP Wipo information: published in national office

Ref document number: 2003737351

Country of ref document: EP

NENP Non-entry into the national phase

Ref country code: JP

WWW Wipo information: withdrawn in national office

Country of ref document: JP