GB1360774A - Integrated brake booster and adaptive braking modulator - Google Patents

Integrated brake booster and adaptive braking modulator

Info

Publication number
GB1360774A
GB1360774A GB516073A GB516073A GB1360774A GB 1360774 A GB1360774 A GB 1360774A GB 516073 A GB516073 A GB 516073A GB 516073 A GB516073 A GB 516073A GB 1360774 A GB1360774 A GB 1360774A
Authority
GB
United Kingdom
Prior art keywords
communication
chamber
piston
port
valve
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
GB516073A
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
Priority to CA159,221A priority Critical patent/CA967621A/en
Application filed by Bendix Corp filed Critical Bendix Corp
Priority to GB516073A priority patent/GB1360774A/en
Priority to AU52129/73A priority patent/AU461673B2/en
Priority to DE19732307817 priority patent/DE2307817A1/en
Publication of GB1360774A publication Critical patent/GB1360774A/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
    • 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
    • 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
    • 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
    • B60T8/32—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
    • B60T8/40—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 comprising an additional fluid circuit including fluid pressurising means for modifying the pressure of the braking fluid, e.g. including wheel driven pumps for detecting a speed condition, or pumps which are controlled by means independent of the braking system
    • B60T8/4004—Repositioning the piston(s) of the brake control means by means of a fluid pressurising means in order to reduce the brake pressure

Landscapes

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

Abstract

1360774 Combined brake booster and modulator BENDIX CORP 1 Feb 1973 5160/73 Heading F2F An integrated brake booster and adaptive braking modulator comprises a piston sliding in a chamber 36 of a housing and defining compartments on either side thereof, an operatoroperated valve 116 controlling communication to one compartment to move the piston which actuates a device for generating brake line pressure, a control unit responsive to the deceleration of at least one braked wheel and an electrically operated valve for communicating pressure fluid to the other compartment to cause reverse piston movement and brake line pressure relief upon occurrence of a skidding condition of the wheel. The chamber 36 is divided into two, each with a piston 44, 46 actuating a further piston 64, 72 via a rod 62, 70 to generate hydraulic pressure in front and rear brake lines respectively, a reservoir being provided in known manner for each further piston. An input rod 140 actuates a seat 130 to first close communication between the right-hand end of the chamber 36 and a return port 15 via passages 136, 138, 142, 144, and then open communication to that chamber end from a pressure source, e.g. an accumulator fed through a charging valve from a steering pump, via a port 12 and passages 122, 138, 136, to move the pistons 44, 46. During normal braking, for each piston 44, 46, a first solenoid valve 108 allows fluid communication between the left-hand end of the chamber 36 and a reservoir via passages 96, 98 and a port 16, and a second solenoid valve 100 blocks communication between the two ends of the chamber 36. A control device upon receipt of a wheel skid signal actuates the solenoid valves 100, 108 to allow communication between the two chamber ends, and to block flow through the port 16, thus equalizing pressures on either side of the pistons 44, 46, causing retraction, and pressure decrease in the associated brake lines. Alternatively, the solenoid 100 controls communication between the left-hand chamber end and an external accumulator. Upon pressure failure, further movement of the rod 140 causes a pivoted castor 148 on a cartridge 118 to engage the pistons 44, 46 to provide mechanical force transmission. Where the booster is fed directly from a steering pump and must allow continued fluid flow to the steering gear, a spool valve is combined with the input rod. This valve allows communication between an input port from the pump and an outlet port to the steering gear when not actuated, and also allowing communication from the right hand chamber end to a return port to a reservoir. Upon actuation, this latter communication is blocked and flow is allowed from the inlet port to the chamber end, with continued flow to the steering gear.
GB516073A 1973-02-01 1973-02-01 Integrated brake booster and adaptive braking modulator Expired GB1360774A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CA159,221A CA967621A (en) 1973-02-01 1972-12-18 Integrated brake booster and adaptive braking modulator
GB516073A GB1360774A (en) 1973-02-01 1973-02-01 Integrated brake booster and adaptive braking modulator
AU52129/73A AU461673B2 (en) 1973-02-01 1973-02-14 Integrated brake booster and adaptive braking modulator
DE19732307817 DE2307817A1 (en) 1973-02-01 1973-02-16 BRAKE AMPLIFIER AND ADAPTIVE BRAKE CONTROLLER

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB516073A GB1360774A (en) 1973-02-01 1973-02-01 Integrated brake booster and adaptive braking modulator

Publications (1)

Publication Number Publication Date
GB1360774A true GB1360774A (en) 1974-07-24

Family

ID=9790824

Family Applications (1)

Application Number Title Priority Date Filing Date
GB516073A Expired GB1360774A (en) 1973-02-01 1973-02-01 Integrated brake booster and adaptive braking modulator

Country Status (4)

Country Link
AU (1) AU461673B2 (en)
CA (1) CA967621A (en)
DE (1) DE2307817A1 (en)
GB (1) GB1360774A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2301418A1 (en) * 1975-02-19 1976-09-17 Blomberg Folke Ivar BRAKING METHOD AND APPARATUS
FR2565913A1 (en) * 1984-06-13 1985-12-20 Dba BRAKE PRESSURE CONTROL AND MODULATION SYSTEM FOR ANTI-LOCK BRAKE CIRCUIT

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2461295A1 (en) * 1974-12-23 1976-07-01 Teves Gmbh Alfred BRAKE DEVICE FOR VEHICLES
DE2948428A1 (en) * 1979-12-01 1981-06-04 Alfred Teves Gmbh, 6000 Frankfurt HYDRAULIC BRAKE ACTUATION DEVICE, IN PARTICULAR FOR VEHICLES WITH AN ANTI-BLOCKING CONTROL SYSTEM
DE3342908A1 (en) * 1983-11-26 1985-06-05 Alfred Teves Gmbh, 6000 Frankfurt SLIP-CONTROLLED BRAKE SYSTEM FOR MOTOR VEHICLES
FR2593131B1 (en) * 1986-01-22 1990-11-30 Bendix France HYDRAULIC ASSISTANCE DEVICE.
IN176847B (en) * 1989-01-18 1996-09-21 Lucas Ind Plc

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2301418A1 (en) * 1975-02-19 1976-09-17 Blomberg Folke Ivar BRAKING METHOD AND APPARATUS
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

Also Published As

Publication number Publication date
DE2307817A1 (en) 1974-08-22
AU5212973A (en) 1974-08-15
AU461673B2 (en) 1975-06-05
CA967621A (en) 1975-05-13

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Legal Events

Date Code Title Description
414F Notice of opposition given (sect. 14/1949)
414C Case decided by the comptroller ** grants refused (sect. 14/1949)
CSNS Application of which complete specification have been accepted and published, but patent is not sealed