GB1412038A - Automatic anti-lock control system with a pressure modulator - Google Patents

Automatic anti-lock control system with a pressure modulator

Info

Publication number
GB1412038A
GB1412038A GB1164973A GB1164973A GB1412038A GB 1412038 A GB1412038 A GB 1412038A GB 1164973 A GB1164973 A GB 1164973A GB 1164973 A GB1164973 A GB 1164973A GB 1412038 A GB1412038 A GB 1412038A
Authority
GB
United Kingdom
Prior art keywords
piston
valve
magnet
coil
energized
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
GB1164973A
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.)
Rockwell Collins Deutschland GmbH
Original Assignee
Teldix GmbH
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 Teldix GmbH filed Critical Teldix GmbH
Publication of GB1412038A publication Critical patent/GB1412038A/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
    • B60T8/4266—Debooster systems having an electro-mechanically actuated expansion unit, e.g. solenoid, electric motor, piezo stack

Landscapes

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

Abstract

1412038 Antilock braking systems TELDIX GmbH 9 March 1973 [11 March 1972] 11649/73 Heading F2F An antilock control system comprises a modulator 5 including a valve 6 connected between a master cylinder 2 and a wheel brake cylinder 3 and operated by a piston 10 movable between positions respectively allowing opening of valve 6 and closing valve 6 with subsequent increase of the volume of fluid located between the valve and the wheel cylinder, the piston being operated by an electromagnetic device including coil 13 to close the valve and by an electromagnetic device including coil 11 to open the valve, the piston being held in intermediate positions by a bar magnet 15 and soft iron plate 16. In operation, detection of wheel slip by a control unit 12 causes energization of coil 13 whereby the holding force of magnet 15 is overcome and piston 10 moves rightwardly to close the valve. When an acceleration signal occurs, or after a time lapse, unit 12 causes de-energization of coil 13 and magnet 15 becomes effective again to the piston 10 being held in the valve closed position so that the pressure is kept constant. At the end of the reacceleration phase coil 11 is energized and acts on a soft iron core 18 on the end of piston-rod 17 to move piston 10 leftwardly and open the valve. At the same time coil 11 is energized to neutralize the effect of the magnet 15. Coils 11, 13 are de-energized after piston 10 has returned to its initial position being retained in this position by magnet 15 and plate 16. In an alternative construction plate 16 and the poles of magnet 13, 15 are provided with teeth of the same pitch so that the piston may be held in a series of intermediate positions.
GB1164973A 1972-03-11 1973-03-09 Automatic anti-lock control system with a pressure modulator Expired GB1412038A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19722211921 DE2211921A1 (en) 1972-03-11 1972-03-11 ANTI-LOCK CONTROL SYSTEM WITH A PRESSURE MODULATOR

Publications (1)

Publication Number Publication Date
GB1412038A true GB1412038A (en) 1975-10-29

Family

ID=5838676

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1164973A Expired GB1412038A (en) 1972-03-11 1973-03-09 Automatic anti-lock control system with a pressure modulator

Country Status (2)

Country Link
DE (1) DE2211921A1 (en)
GB (1) GB1412038A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2559112B1 (en) * 1984-02-06 1986-12-26 Renault PISTON HYDRAULIC CIRCUIT FOR PREVENTING THE LOCK OF THE BRAKES OF A VEHICLE
FR2597632A1 (en) * 1985-11-13 1987-10-23 Lemaire Alain Device for making use of variation in rotational speed for the purposes especially of anti-locking and anti-skidding for car wheels
FR2701530B1 (en) * 1993-02-12 1995-03-24 Alliedsignal Europ Services Pressure offset valve and electric bypass.
JPH06270781A (en) * 1993-03-16 1994-09-27 Nissan Motor Co Ltd Pressure control actuator and brake control device using this actuator

Also Published As

Publication number Publication date
DE2211921A1 (en) 1973-09-20

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Legal Events

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