GB1314294A - Anti-skid braking system for automotive vehicles - Google Patents

Anti-skid braking system for automotive vehicles

Info

Publication number
GB1314294A
GB1314294A GB3113071A GB3113071A GB1314294A GB 1314294 A GB1314294 A GB 1314294A GB 3113071 A GB3113071 A GB 3113071A GB 3113071 A GB3113071 A GB 3113071A GB 1314294 A GB1314294 A GB 1314294A
Authority
GB
United Kingdom
Prior art keywords
pressure
torque
memory
output
voltage
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
GB3113071A
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
Application filed by Bendix Corp filed Critical Bendix Corp
Publication of GB1314294A publication Critical patent/GB1314294A/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
    • B60T8/17—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
    • B60T8/1763—Brake regulation specially adapted to prevent excessive wheel slip during vehicle deceleration, e.g. ABS responsive to the coefficient of friction between the wheels and the ground surface
    • B60T8/17633—Brake regulation specially adapted to prevent excessive wheel slip during vehicle deceleration, e.g. ABS responsive to the coefficient of friction between the wheels and the ground surface based on analogue circuits or digital circuits comprised of discrete electronic elements

Landscapes

  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Regulating Braking Force (AREA)

Abstract

1314294 Antiskid braking systems BENDIX CORP 2 July 1971 [16 Sept 1970] 31130/71 Heading F2F A vehicle antiskid braking system including a sensor 20 producing a voltage representative of wheel rotational velocity has a transducer 12 for converting brake pressure into a pressure signal, a circuit 16 for changing the pressure signal into a voltage representative of torque exerted by the braking system at the brake pressure, circuits 24, 26 for converting the velocity voltage into a voltage representative of the product of angular deceleration and moment of inertia of the wheel, a comparator 28 for comparing the said product voltage and the brake torque voltage to obtain a voltage representative of torque exerted by the road surface on the wheel, a differentiating circuit 30 to determine the maximum value of said road surface torque and control means responsive to the output thereof for operating the inlet and outlet valves 36, 50 of a brake pressure modulator to maintain the said surface torque at a maximum by varying the braking pressure. When the road torque Q R passes through its maximum value, a zero output is realized from circuit 30 and a comparator 32 gives an output signal which sets a flip:flop 34 which energizes the normally open valve 36 to prevent increase of pressure to the brake cylinder and simultaneously a pressure memory 38 will be energized to memorize the pressure signal sent by transducer 12 when the maximum road torque was obtained. A second pressure memory 40 is energized to receive the output of memory 38 and has an output one half cycle behind memory 38. A predetermined percentage of the first memory output is memorized by memory 40 so that the pressure in the wheel cylinder can be decayed through solenoid valve 50 slightly before maximum road torque has been obtained.
GB3113071A 1970-09-16 1971-07-02 Anti-skid braking system for automotive vehicles Expired GB1314294A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US7273070A 1970-09-16 1970-09-16

Publications (1)

Publication Number Publication Date
GB1314294A true GB1314294A (en) 1973-04-18

Family

ID=22109416

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3113071A Expired GB1314294A (en) 1970-09-16 1971-07-02 Anti-skid braking system for automotive vehicles

Country Status (5)

Country Link
AU (1) AU3159471A (en)
CA (1) CA966208A (en)
DE (1) DE2136825A1 (en)
FR (1) FR2106546B1 (en)
GB (1) GB1314294A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002006102A1 (en) * 2000-07-18 2002-01-24 Siemens Aktiengesellschaft Method and braking system for the regulation of the braking process in a motor vehicle

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4336592A (en) * 1980-06-23 1982-06-22 Goodyear Aerospace Corporation Antiskid control system for brakes which exhibit large changes in lining friction coefficient
DE3119144C2 (en) * 1981-05-14 1985-01-17 FAG Kugelfischer Georg Schäfer KGaA, 8720 Schweinfurt Anti-lock hydraulic vehicle braking system
DE3330482A1 (en) * 1983-08-24 1985-03-07 Alfred Teves Gmbh, 6000 Frankfurt METHOD AND DEVICE FOR REGULATING THE BRAKING EFFECT OF A BRAKE-SLIP-CONTROLLED BRAKE SYSTEM
DE3500745A1 (en) * 1985-01-11 1986-07-17 Alfred Teves Gmbh, 6000 Frankfurt METHOD AND CIRCUIT ARRANGEMENT FOR ADJUSTING THE SLIP CONTROL TO THE CURRENT FRICTION VALUE
DE3600647A1 (en) * 1986-01-11 1987-07-16 Teves Gmbh Alfred Arrangement for controlling a brake system with wheel-slip control
US4822113A (en) * 1987-08-13 1989-04-18 The Boeing Company Braking torque control system
DE3909588A1 (en) * 1989-03-23 1990-09-27 Bosch Gmbh Robert METHOD FOR DETERMINING THE BRAKE TORQUE OF A VEHICLE

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1407168A (en) * 1964-06-16 1965-07-30 Hispano Suiza Sa Improvements to servo-controlled braking devices for vehicles called upon to taxi, in particular for aerodynes
US3494671A (en) * 1968-03-13 1970-02-10 Bendix Corp Automotive anti-skid control system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002006102A1 (en) * 2000-07-18 2002-01-24 Siemens Aktiengesellschaft Method and braking system for the regulation of the braking process in a motor vehicle
US6783194B2 (en) 2000-07-18 2004-08-31 Pacifica Group Technologies Pty. Ltd. Method and brake system for controlling the braking process in a motor vehicle

Also Published As

Publication number Publication date
FR2106546B1 (en) 1974-09-27
CA966208A (en) 1975-04-15
DE2136825A1 (en) 1972-03-23
AU3159471A (en) 1973-01-25
FR2106546A1 (en) 1972-05-05

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees