GB1439928A - Road vehicle anti-skid braking systems - Google Patents

Road vehicle anti-skid braking systems

Info

Publication number
GB1439928A
GB1439928A GB3298372A GB3298372A GB1439928A GB 1439928 A GB1439928 A GB 1439928A GB 3298372 A GB3298372 A GB 3298372A GB 3298372 A GB3298372 A GB 3298372A GB 1439928 A GB1439928 A GB 1439928A
Authority
GB
United Kingdom
Prior art keywords
modulator
circuit
testing circuit
signal
braking
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
GB3298372A
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.)
Lucas Electrical Co Ltd
Original Assignee
Lucas Electrical 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
Application filed by Lucas Electrical Co Ltd filed Critical Lucas Electrical Co Ltd
Priority to GB3298372A priority Critical patent/GB1439928A/en
Priority to AU57542/73A priority patent/AU492144B2/en
Priority to FR7325630A priority patent/FR2192931B1/fr
Priority to JP48078541A priority patent/JPS591617B2/en
Priority to IT5143973A priority patent/IT989862B/en
Priority to DE19732335666 priority patent/DE2335666A1/en
Publication of GB1439928A publication Critical patent/GB1439928A/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
    • B60T8/88—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 with failure responsive means, i.e. means for detecting and indicating faulty operation of the speed responsive control means
    • B60T8/885—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 with failure responsive means, i.e. means for detecting and indicating faulty operation of the speed responsive control means using electrical circuitry
    • 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
    • B60T8/343—Systems characterised by their lay-out
    • B60T8/344—Hydraulic systems
    • B60T8/347—3 Channel systems
    • 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
    • B60T2270/00—Further aspects of brake control systems not otherwise provided for
    • B60T2270/40—Failsafe aspects of brake control systems
    • B60T2270/406—Test-mode; Self-diagnosis

Abstract

1439928 Aritiskid braking systems LUCAS ELECTRICAL Ltd 14 June 1973 [14 July 1972] 32983/72 Heading F2F An antiskid braking system comprises a sensing device providing a signal representing rotational deceleration of a wheel, brake control means including an hydraulically operated modulator 26, 27 or 28 responsive to the signal to release the brakes when the signal exceeds a predetermined value, and a testing circuit operable for a predetermined period of time when the brakes are not applied to test the operation of the modulator and revert the system to normal braking if the modulator is not operating satisfactorily, the sensing device including a wheel speed sensor 21b and a differentiating circuit (62) connected thereto and producing a deceleration signal which is fed to an amplifier (64) which when the signal exceeds said predetermined value energizes a solenoid 39, 41 or 42 to operate a valve 36, 37 or 38 to operate the modulator and hence operate switching means providing an input to the testing circuit to ensure that the solenoid is de-energized and the modulator returns to rest position, said return being detected by the testing circuit but any failure of the modulator being detected, the testing circuit, at the end of the predetermined period, preventing the antiskid control circuit from operating so that the braking system reverts to normal braking. When the differentiating circuit is first connected to electrical supply it provides a signal which operates the modulator so that the testing circuit merely detects operation thereof but the modulator can also be operated independently. The testing circuit also monitors satisfactory operation of the differentiating circuit. The test circuit operates for the predetermined time each time the ignition switch of the vehicle is closed.
GB3298372A 1972-07-14 1972-07-14 Road vehicle anti-skid braking systems Expired GB1439928A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
GB3298372A GB1439928A (en) 1972-07-14 1972-07-14 Road vehicle anti-skid braking systems
AU57542/73A AU492144B2 (en) 1972-07-14 1973-06-29 Road vehicle braking systems incorporating wheel slide protection
FR7325630A FR2192931B1 (en) 1972-07-14 1973-07-12
JP48078541A JPS591617B2 (en) 1972-07-14 1973-07-13 Braking mechanism for road vehicles equipped with anti-slip wheels
IT5143973A IT989862B (en) 1972-07-14 1973-07-13 BRAKING SYSTEM FOR ROAD VEHICLES
DE19732335666 DE2335666A1 (en) 1972-07-14 1973-07-13 MOTOR VEHICLE BRAKING SYSTEM

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3298372A GB1439928A (en) 1972-07-14 1972-07-14 Road vehicle anti-skid braking systems

Publications (1)

Publication Number Publication Date
GB1439928A true GB1439928A (en) 1976-06-16

Family

ID=10346919

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3298372A Expired GB1439928A (en) 1972-07-14 1972-07-14 Road vehicle anti-skid braking systems

Country Status (5)

Country Link
JP (1) JPS591617B2 (en)
DE (1) DE2335666A1 (en)
FR (1) FR2192931B1 (en)
GB (1) GB1439928A (en)
IT (1) IT989862B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3313688A1 (en) * 1983-04-15 1984-10-25 Zahnräderfabrik Renk AG, 8900 Augsburg ELECTRONIC CONTROL DEVICE FOR A DRIVE SYSTEM

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3234637A1 (en) * 1982-09-18 1984-03-22 Alfred Teves Gmbh, 6000 Frankfurt METHOD AND CIRCUIT FOR CONTROLLING A BRAKE-SLIP CONTROL SYSTEM
JPS59177511U (en) * 1983-05-16 1984-11-27 有限会社杉本製作所 plastic side visor for cars
CA1254601A (en) * 1984-05-31 1989-05-23 Makoto Sato Anti-lock braking system

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1755741C3 (en) * 1967-06-19 1979-03-29 Kelsey-Hayes Co., Romulus, Mich. (V.St.A.) Device for preventing the locking of a vehicle wheel of a motor vehicle
FR2092820B1 (en) * 1970-06-22 1973-11-16 Dba
GB1348134A (en) * 1970-09-09 1974-03-13 Girling Ltd Frequency detecting means
US3667812A (en) * 1970-12-07 1972-06-06 Bendix Corp Skid control system cycling and checking circuit,including drift prevention means
JPS5032380A (en) * 1973-07-26 1975-03-29

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3313688A1 (en) * 1983-04-15 1984-10-25 Zahnräderfabrik Renk AG, 8900 Augsburg ELECTRONIC CONTROL DEVICE FOR A DRIVE SYSTEM

Also Published As

Publication number Publication date
JPS4957262A (en) 1974-06-04
IT989862B (en) 1975-06-10
AU5754273A (en) 1975-01-09
DE2335666A1 (en) 1974-01-31
JPS591617B2 (en) 1984-01-13
FR2192931B1 (en) 1976-06-18
FR2192931A1 (en) 1974-02-15

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Legal Events

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