GB1449949A - Modulator for an anti-locking hydraulic braking system - Google Patents

Modulator for an anti-locking hydraulic braking system

Info

Publication number
GB1449949A
GB1449949A GB4895574A GB4895574A GB1449949A GB 1449949 A GB1449949 A GB 1449949A GB 4895574 A GB4895574 A GB 4895574A GB 4895574 A GB4895574 A GB 4895574A GB 1449949 A GB1449949 A GB 1449949A
Authority
GB
United Kingdom
Prior art keywords
piston
pressure
space
cylinder
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
GB4895574A
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.)
Ustav Pro Vyzkum Motorovych Vozidel
Original Assignee
Ustav Pro Vyzkum Motorovych Vozidel
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 Ustav Pro Vyzkum Motorovych Vozidel filed Critical Ustav Pro Vyzkum Motorovych Vozidel
Publication of GB1449949A publication Critical patent/GB1449949A/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
    • B60T8/42—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 having expanding chambers for controlling pressure, i.e. closed systems
    • B60T8/4208—Debooster systems
    • B60T8/4225—Debooster systems having a fluid actuated expansion unit

Landscapes

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

Abstract

1449949 Aritiskid braking systems USTAV PRO VYZKUM MOTOROVYCH VOZIDEL 12 Nov 1974 [13 Nov 1973] 48955/74 Heading F2F A modulator for an antiskid braking system comprises a body 10 with a chamber therein, a balance piston 11 within the chamber, a first control valve 14 operated in dependence on wheel lock to permit pressure to be applied to one side of the piston 11 from an auxiliary hydraulic supply 8 ot to allow relief of pressure, and a second control valve having a piston 12 and which permits passage of fluid from a wheel cylinder to the other side of piston 11 or disconnects the said passage when the fluid pressure from the auxiliary supply falls below a predetermined pressure level. When skidding occurs a valve 4 closes connection between the wheel cylinder 5 and the master cylinder 1 and slide valve 14 is moved by a signal against a spring 16 to connect a control space A to a reservoir 9 allowing loss of pressure in the space and movement of piston 11 to increase the volume of space B to relieve braking pressure. If there is a loss of pressure in accumulator 8 piston 12 is moved by a spring 17 to disconnect space B from cylinder 5 the system then acting as a normal system without antiskid control.
GB4895574A 1973-11-13 1974-11-12 Modulator for an anti-locking hydraulic braking system Expired GB1449949A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CS779373A CS169134B1 (en) 1973-11-13 1973-11-13

Publications (1)

Publication Number Publication Date
GB1449949A true GB1449949A (en) 1976-09-15

Family

ID=5427671

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4895574A Expired GB1449949A (en) 1973-11-13 1974-11-12 Modulator for an anti-locking hydraulic braking system

Country Status (5)

Country Link
CS (1) CS169134B1 (en)
DE (1) DE2453594C3 (en)
FR (1) FR2250651B1 (en)
GB (1) GB1449949A (en)
IT (1) IT1025625B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2126296A (en) * 1982-08-28 1984-03-21 Teves Gmbh Alfred Failsafe arrangement in anti-skid hydraulic brake system
GB2147379A (en) * 1983-09-29 1985-05-09 Aisin Seiki Brake pressure modulating assembly for vehicle antiskid brake systems

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2126296A (en) * 1982-08-28 1984-03-21 Teves Gmbh Alfred Failsafe arrangement in anti-skid hydraulic brake system
GB2147379A (en) * 1983-09-29 1985-05-09 Aisin Seiki Brake pressure modulating assembly for vehicle antiskid brake systems

Also Published As

Publication number Publication date
DE2453594B2 (en) 1978-08-24
DE2453594A1 (en) 1975-05-15
FR2250651B1 (en) 1979-08-03
FR2250651A1 (en) 1975-06-06
IT1025625B (en) 1978-08-30
CS169134B1 (en) 1976-07-29
DE2453594C3 (en) 1979-04-26

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Legal Events

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