GB1402363A - Control valve unit for an automotive vehicle having a power braking system - Google Patents

Control valve unit for an automotive vehicle having a power braking system

Info

Publication number
GB1402363A
GB1402363A GB841173A GB841173A GB1402363A GB 1402363 A GB1402363 A GB 1402363A GB 841173 A GB841173 A GB 841173A GB 841173 A GB841173 A GB 841173A GB 1402363 A GB1402363 A GB 1402363A
Authority
GB
United Kingdom
Prior art keywords
piston
valve member
chamber
bore
path
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.)
Expired
Application number
GB841173A
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.)
Aisin Corp
Original Assignee
Aisin Seiki Co Ltd
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
Priority claimed from JP1994572A external-priority patent/JPS5528896B2/ja
Priority claimed from JP47022973A external-priority patent/JPS4891469A/ja
Application filed by Aisin Seiki Co Ltd filed Critical Aisin Seiki Co Ltd
Publication of GB1402363A publication Critical patent/GB1402363A/en
Expired 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
    • 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
    • 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
    • B60T13/12—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 the fluid being liquid
    • B60T13/14—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 the fluid being liquid using accumulators or reservoirs fed by pumps
    • B60T13/142—Systems with master cylinder
    • B60T13/143—Master cylinder mechanically coupled with booster
    • B60T13/144—Pilot valve provided inside booster piston
    • 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
    • B60T8/17613—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 based on analogue circuits or digital circuits comprised of discrete electronic elements
    • 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
    • B60T8/34—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 having a fluid pressure regulator responsive to a speed condition
    • B60T8/44—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 having a fluid pressure regulator responsive to a speed condition co-operating with a power-assist booster means associated with a master cylinder for controlling the release and reapplication of brake pressure through an interaction with the power assist device, i.e. open systems
    • B60T8/441—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 having a fluid pressure regulator responsive to a speed condition co-operating with a power-assist booster means associated with a master cylinder for controlling the release and reapplication of brake pressure through an interaction with the power assist device, i.e. open systems using hydraulic boosters
    • 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
    • B60T8/34—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 having a fluid pressure regulator responsive to a speed condition
    • B60T8/44—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 having a fluid pressure regulator responsive to a speed condition co-operating with a power-assist booster means associated with a master cylinder for controlling the release and reapplication of brake pressure through an interaction with the power assist device, i.e. open systems
    • B60T8/447—Reducing the boost of the power-assist booster means to reduce brake pressure

Landscapes

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

Abstract

1402363 Antiskid braking systems; valves AISIN SEIKI KK 21 Feb 1973 [25 Feb 1972 6 March 1972] 8411/73 Headings F2F and F2V In a vehicle antiskid braking system in which pressure is transmitted by a fluid pressure operated master cylinder 311, skidding is relieved upon detection of a skid condition by returning the pressure fluid used to operate the master cylinder to a reservoir 352. As shown, during normal braking a power piston 308 operates master cylinder 311 by fluid transmitted to a booster chamber 331 of a control valve unit on depression of a pedal 305 which causes rightward movement of a piston 304. A seat 317 of piston 304 engages a valve face 321 of a valve member 320 thereby closing the communication which normally exists between chamber 331 and reservoir 352 by way of a bore 354 provided in a piston 307, a blind bore 316, axial and radial bores 315, 314 in piston 304, chamber 330 and line 353. Thereafter, valve member 320 moves rightwardly to unseat a face 322 thereof from a seat 324 and establish communication between chamber 331 and an accumulator Acc. by way of a compartment 326, groove 328, path 349, grooves 337, 339, respectively provided in a valve member 335 and bore 336, and line 355. On detection of skidding a solenoid coil 344 is energized drawing valve member 335 rightwardly closing communication between path 349 and line 355 and intercommunicating a groove 338 in valve member 350, and path 350. Fluid in the chamber 331 is then returned to reservoir 352 by way of path 350 and groove 338, a radial bore 346, an axial bore 345 and a radial bore 347 respectively provided in valve member 335, annular groove 341 and line 353. If the accummulator or pump P supplying it fails, a mechanical connection is established from pedal 105 through piston 304, piston 307, and a projection 332 on piston 308 to apply the master cylinder directly. In a further embodiment two solenoid operated valves are provided controlling two valve members, one solenoid coil of which remains energized on brake release for a short while under the control of a capacitor so that rapid repressurization of the booster chamber is possible.
GB841173A 1972-02-25 1973-02-21 Control valve unit for an automotive vehicle having a power braking system Expired GB1402363A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP1994572A JPS5528896B2 (en) 1972-02-25 1972-02-25
JP47022973A JPS4891469A (en) 1972-03-06 1972-03-06

Publications (1)

Publication Number Publication Date
GB1402363A true GB1402363A (en) 1975-08-06

Family

ID=26356834

Family Applications (1)

Application Number Title Priority Date Filing Date
GB841173A Expired GB1402363A (en) 1972-02-25 1973-02-21 Control valve unit for an automotive vehicle having a power braking system

Country Status (1)

Country Link
GB (1) GB1402363A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2565913A1 (en) * 1984-06-13 1985-12-20 Dba BRAKE PRESSURE CONTROL AND MODULATION SYSTEM FOR ANTI-LOCK BRAKE CIRCUIT

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2565913A1 (en) * 1984-06-13 1985-12-20 Dba BRAKE PRESSURE CONTROL AND MODULATION SYSTEM FOR ANTI-LOCK BRAKE CIRCUIT
EP0168286A1 (en) * 1984-06-13 1986-01-15 BENDIX France Control and brake pressure modulating system for an anti-locking brake circuit
US4705324A (en) * 1984-06-13 1987-11-10 Societe Anonyme D.B.A. Brake-pressure control and modulation system for an antilocking brake circuit assembly component for a disc brake
AU575403B2 (en) * 1984-06-13 1988-07-28 Societe Anonyme D.B.A. Brake-pressure control and modulation system for an antilocking brake circuit

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee