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JPS54138238A - Liquid pressure control device for dual-system brake device for vehicle - Google Patents

Liquid pressure control device for dual-system brake device for vehicle

Info

Publication number
JPS54138238A
JPS54138238A JP4570078A JP4570078A JPS54138238A JP S54138238 A JPS54138238 A JP S54138238A JP 4570078 A JP4570078 A JP 4570078A JP 4570078 A JP4570078 A JP 4570078A JP S54138238 A JPS54138238 A JP S54138238A
Authority
JP
Japan
Prior art keywords
piston
liquid pressure
open
control
control device
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.)
Pending
Application number
JP4570078A
Other languages
Japanese (ja)
Inventor
Yutaka Kawaguchi
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.)
Toyota Motor Corp
Original Assignee
Toyota Motor 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 Toyota Motor Corp filed Critical Toyota Motor Corp
Priority to JP4570078A priority Critical patent/JPS54138238A/en
Priority to DE19782846724 priority patent/DE2846724C2/en
Priority to GB7842018A priority patent/GB2018921B/en
Priority to FR7901734A priority patent/FR2423385B1/en
Publication of JPS54138238A publication Critical patent/JPS54138238A/en
Pending 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
    • 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
    • B60T8/26—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force characterised by producing differential braking between front and rear wheels
    • 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
    • B60T11/28—Valves specially adapted therefor
    • B60T11/34—Pressure reducing or limiting valves

Landscapes

  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Hydraulic Control Valves For Brake Systems (AREA)
  • Regulating Braking Force (AREA)

Abstract

PURPOSE: To enable transmission of master cylinder liquid pressure to a normal system even on the failure of the other system, simply and at low cost, by providing a proportioning valve having a control piston and an open-close valve, a balance piston, and an open-close valve.
CONSTITUTION: On the failure of one system, a rock piston 61 moves from a middle position due to the liquid pressure difference between the fourth chamber 17 and the fifth chamber 18 before a control piston 21 and a balance piston 41 operate, so that the facing relation between the annular notch 66 of the piston 61 and the small- diameter portion 22 of the piston 21 is eliminated and that the piston 21 stops its operation. As a result, the piston 41 also stops its operation and open-close valves 27 and 52 are kept open. The liquid pressure generated in the pressurizing chamber A or B of a master cylinder is transmitted to a wheel cylinder 5L or 5R, without being subjected to the control by a liquid pressure control device 100.
COPYRIGHT: (C)1979,JPO&Japio
JP4570078A 1978-04-18 1978-04-18 Liquid pressure control device for dual-system brake device for vehicle Pending JPS54138238A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP4570078A JPS54138238A (en) 1978-04-18 1978-04-18 Liquid pressure control device for dual-system brake device for vehicle
DE19782846724 DE2846724C2 (en) 1978-04-18 1978-10-26 Brake force regulator for a diagonal brake system
GB7842018A GB2018921B (en) 1978-04-18 1978-10-26 Hydraulic pressure control device for use in a vehicle split circuit brake system
FR7901734A FR2423385B1 (en) 1978-04-18 1979-01-24 HYDRAULIC PRESSURE CONTROL DEVICE FOR USE IN A BRAKING SYSTEM OF A VEHICLE OF THE TWO-PART TYPE

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4570078A JPS54138238A (en) 1978-04-18 1978-04-18 Liquid pressure control device for dual-system brake device for vehicle

Publications (1)

Publication Number Publication Date
JPS54138238A true JPS54138238A (en) 1979-10-26

Family

ID=12726643

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4570078A Pending JPS54138238A (en) 1978-04-18 1978-04-18 Liquid pressure control device for dual-system brake device for vehicle

Country Status (4)

Country Link
JP (1) JPS54138238A (en)
DE (1) DE2846724C2 (en)
FR (1) FR2423385B1 (en)
GB (1) GB2018921B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5111738A (en) * 1990-07-11 1992-05-12 Valeo Thermique Habitacle Air blower unit for a motor vehicle heating and ventilating system

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6015496B2 (en) * 1979-08-30 1985-04-19 日信工業株式会社 Brake hydraulic control valve device for vehicles
FR2672558B1 (en) * 1991-02-07 1993-04-23 Bendix Europ Services Tech BRAKE COMPENSATOR FOR MOTOR VEHICLE.
DE4237451A1 (en) * 1992-11-06 1994-05-11 Teves Gmbh Alfred Hydraulic pressure reducing valve
CN1332839C (en) * 2005-08-02 2007-08-22 浙江亚太机电股份有限公司 Single chamber failure protection apparatus of double chamber proportioning valve

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1226300A (en) * 1968-12-19 1971-03-24 Ford Motor Co A warning device for indicating a pressure differential, for example, for hydraulic braking systems
JPS5142701B1 (en) * 1969-10-02 1976-11-17
US3804468A (en) * 1969-10-02 1974-04-16 Toyota Motor Co Ltd Dual hydraulic braking system
DE2402291C3 (en) * 1972-07-24 1980-02-28 Alfred Teves Gmbh, 6000 Frankfurt Brake force regulator for a multi-circuit brake system
GB1478136A (en) * 1973-06-08 1977-06-29 Automotive Prod Co Ltd Valve assemblies for use in fluid pressure braking systems and to fluid pressure braking systems including such valve assemblies
GB1444397A (en) * 1973-07-16 1976-07-28 Girling Ltd Fluid pressure control valve
US3832007A (en) * 1973-07-17 1974-08-27 Weatherhead Co Blend back proportioning valve
DE2445068A1 (en) * 1973-09-20 1975-05-15 Girling Ltd Pressure controller for vehicle brake system - has pressure control valve with inner section and operating piston
GB1487788A (en) * 1974-01-18 1977-10-05 Teves Gmbh Alfred Braking-force regulator for a multi-circuit brake system
JPS5526021B2 (en) * 1974-05-02 1980-07-10

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5111738A (en) * 1990-07-11 1992-05-12 Valeo Thermique Habitacle Air blower unit for a motor vehicle heating and ventilating system

Also Published As

Publication number Publication date
DE2846724C2 (en) 1984-04-05
GB2018921B (en) 1982-06-16
FR2423385B1 (en) 1986-11-21
DE2846724A1 (en) 1979-10-25
FR2423385A1 (en) 1979-11-16
GB2018921A (en) 1979-10-24

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