FR2417419A1 - Valve de commande pneumatique pour freins de stationnement - Google Patents

Valve de commande pneumatique pour freins de stationnement

Info

Publication number
FR2417419A1
FR2417419A1 FR7903840A FR7903840A FR2417419A1 FR 2417419 A1 FR2417419 A1 FR 2417419A1 FR 7903840 A FR7903840 A FR 7903840A FR 7903840 A FR7903840 A FR 7903840A FR 2417419 A1 FR2417419 A1 FR 2417419A1
Authority
FR
France
Prior art keywords
control valve
pressure
brakes
supply pressure
parking brakes
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.)
Granted
Application number
FR7903840A
Other languages
English (en)
Other versions
FR2417419B1 (fr
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.)
Bendix Corp
Original Assignee
Bendix Corp
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 Bendix Corp filed Critical Bendix Corp
Publication of FR2417419A1 publication Critical patent/FR2417419A1/fr
Application granted granted Critical
Publication of FR2417419B1 publication Critical patent/FR2417419B1/fr
Granted legal-status Critical Current

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
    • B60T15/00—Construction arrangement, or operation of valves incorporated in power brake systems and not covered by groups B60T11/00 or B60T13/00
    • B60T15/02—Application and release valves
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/86493—Multi-way valve unit
    • Y10T137/86718—Dividing into parallel flow paths with recombining

Landscapes

  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Valves And Accessory Devices For Braking Systems (AREA)
  • Braking Systems And Boosters (AREA)
  • Check Valves (AREA)
  • Multiple-Way Valves (AREA)

Abstract

Une valve de commande pour freins de stationnement d'un véhicule peut être actionnée par le conducteur pour commander la communication de fluide sous pression depuis une source de pression jusqu'aux freins, ces derniers étant du type à actionnement par ressorts et à relâchement sous pression de fluide. La valve de commande est sensible à une chute de la pression d'alimentation au-dessous d'un niveau prédéterminé pour provoquer automatiquement l'échappement de la pression de maintien hors des freina La valve de commande comprend une valve anti-retour qui isole la pression de maintien de la pression d'alimentation de sorte que la pression de maintien ne peut décroître en cas de diminution du niveau de la pression d'alimentation. Toutefois, lorsque la pression d'alimentation chute au-dessous d'une valeur prédéterminée, la valve de commande provoque automatiquement l'échappement de la pression de maintien, et par conséquent, une application mécanique des freins à ressorts.
FR7903840A 1978-02-16 1979-02-15 Valve de commande pneumatique pour freins de stationnement Granted FR2417419A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/878,202 US4158470A (en) 1978-02-16 1978-02-16 Spring brake hold-off system

Publications (2)

Publication Number Publication Date
FR2417419A1 true FR2417419A1 (fr) 1979-09-14
FR2417419B1 FR2417419B1 (fr) 1984-06-29

Family

ID=25371578

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7903840A Granted FR2417419A1 (fr) 1978-02-16 1979-02-15 Valve de commande pneumatique pour freins de stationnement

Country Status (10)

Country Link
US (1) US4158470A (fr)
JP (1) JPS54117943A (fr)
AR (1) AR217731A1 (fr)
AU (1) AU522763B2 (fr)
BR (1) BR7900902A (fr)
CA (1) CA1088980A (fr)
DE (1) DE2905461A1 (fr)
FR (1) FR2417419A1 (fr)
GB (1) GB2014699B (fr)
IT (1) IT1110244B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2467122A1 (fr) * 1979-10-12 1981-04-17 Bosch Gmbh Robert Robinet de commande pour frein mu par un fluide de pression, notamment pour frein de parc a air comprime de vehicule automobile

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5984425A (en) * 1998-01-22 1999-11-16 Wacker Corporation Spring applied/hydraulically released braking system employing self-resetting override valve
US7600825B2 (en) * 2006-06-08 2009-10-13 Parker-Hannifin Corporation Hydraulic release system with manually operated hydraulic lock valve for spring-applied, hydraulically-released parking brake system
CN104061350B (zh) * 2014-06-06 2016-08-03 中国煤炭科工集团太原研究院有限公司 气动自锁开关阀
EP3611065B1 (fr) * 2018-07-13 2021-02-24 WABCO Europe BVBA Soupape de relâchement de frein de stationnement - agencement simple de soupape à manchon et de bobine (tige) à 4 voies et à 3 positions (soupape 4/3) ayant une fonction d'éjection

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1388341A (fr) * 1963-03-21 1965-02-05 Bendix Westinghouse Automotive Valve de contrôle notamment pour circuit de freinage
FR2227980A1 (fr) * 1973-05-02 1974-11-29 Midland Ross Corp

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3166358A (en) * 1963-03-21 1965-01-19 Bendix Westinghouse Automotive Fluid pressure system and control valve
DE2538505C2 (de) * 1975-08-29 1986-10-09 Knorr-Bremse AG, 8000 München Sperrventil für Federspeicherbremsanlagen von Kraftfahrzeugen

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1388341A (fr) * 1963-03-21 1965-02-05 Bendix Westinghouse Automotive Valve de contrôle notamment pour circuit de freinage
FR2227980A1 (fr) * 1973-05-02 1974-11-29 Midland Ross Corp

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2467122A1 (fr) * 1979-10-12 1981-04-17 Bosch Gmbh Robert Robinet de commande pour frein mu par un fluide de pression, notamment pour frein de parc a air comprime de vehicule automobile

Also Published As

Publication number Publication date
AR217731A1 (es) 1980-04-15
AU522763B2 (en) 1982-06-24
DE2905461A1 (de) 1979-08-30
US4158470A (en) 1979-06-19
CA1088980A (fr) 1980-11-04
FR2417419B1 (fr) 1984-06-29
GB2014699B (en) 1982-06-16
IT7920216A0 (it) 1979-02-15
GB2014699A (en) 1979-08-30
JPS54117943A (en) 1979-09-13
AU4371079A (en) 1979-08-23
IT1110244B (it) 1985-12-23
BR7900902A (pt) 1979-09-11

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Legal Events

Date Code Title Description
ST Notification of lapse