ES8505592A1 - Vehicle anti-skid braking systems - Google Patents

Vehicle anti-skid braking systems

Info

Publication number
ES8505592A1
ES8505592A1 ES535591A ES535591A ES8505592A1 ES 8505592 A1 ES8505592 A1 ES 8505592A1 ES 535591 A ES535591 A ES 535591A ES 535591 A ES535591 A ES 535591A ES 8505592 A1 ES8505592 A1 ES 8505592A1
Authority
ES
Spain
Prior art keywords
chamber
modulator
piston
assembly
dump 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
ES535591A
Other languages
Spanish (es)
Other versions
ES535591A0 (en
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.)
ZF International UK Ltd
Original Assignee
Lucas Industries 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 Industries Ltd filed Critical Lucas Industries Ltd
Publication of ES8505592A1 publication Critical patent/ES8505592A1/en
Publication of ES535591A0 publication Critical patent/ES535591A0/en
Granted 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
    • 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
    • B60T8/4275—Pump-back systems

Landscapes

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

Abstract

A modulator piston assembly (6) is of generally dumb-bell shape, consisting of a first modulator piston (7) and a second modulator piston (9) having an integral stem (10) carrying an isolation valve member (14) engageable with a seat (16) carried by the first piston (7). First, second and third modulator chambers (23, 24 and 41) respectively are bounded by the modulator piston assembly, such that on movement of the modulator piston assembly from its normal position the volumes of first and third chambers (23, 41) increase, and that of second chamber (24) decreases. A master cylinder (28) is connected permanently to the second chamber (24), and a wheel brake (25) to the first chamber (23), and a normally closed solenoid controlled dump valve (35, 36) is interposed between the master cylinder inlet (31) and the third chamber (41). On a skid signal the dump valve (35, 36) opens, and fluid flows from the second chamber (24) to the third chamber (41), isolation valve (14, 16) closes, and the first chamber (23) is expanded to relieve the wheel brake pressure. A pump piston (51) is arranged in association with one-way seals (42, 43) to pump fluid from the third chamber (41) back to the inlet of the dump valve (35, 36), and on cancellation of the skid signal thereby returns fluid from the third chamber (24). The pump piston on the Fig. 2 construction is remote from the modulator assembly and is connected thereto by only a single hydraulic line (56).
ES535591A 1983-09-02 1984-08-31 ANTI-SKID BRAKE SYSTEM FOR VEHICLES Granted ES535591A0 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB08323577A GB2146080B (en) 1983-09-02 1983-09-02 Vehicle anti-skid braking systems

Publications (2)

Publication Number Publication Date
ES8505592A1 true ES8505592A1 (en) 1985-06-01
ES535591A0 ES535591A0 (en) 1985-06-01

Family

ID=10548241

Family Applications (1)

Application Number Title Priority Date Filing Date
ES535591A Granted ES535591A0 (en) 1983-09-02 1984-08-31 ANTI-SKID BRAKE SYSTEM FOR VEHICLES

Country Status (4)

Country Link
JP (1) JPS60151157A (en)
ES (1) ES535591A0 (en)
FR (1) FR2551409B1 (en)
GB (2) GB2184184B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8529777D0 (en) * 1985-12-03 1986-01-08 Lucas Ind Plc Vehicle anti-skid braking systems
DE3921683A1 (en) * 1989-07-01 1991-01-10 Bosch Gmbh Robert METHOD AND DEVICE FOR NON-INTERACTIVE ABS CONTROL
US5299859A (en) * 1991-11-15 1994-04-05 Allied-Signal Inc. Combination solenoid valve and shuttle valve
JP3805889B2 (en) * 1997-06-20 2006-08-09 株式会社カネカ Solar cell module and manufacturing method thereof

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1248787A (en) * 1968-12-13 1971-10-06 Mullard Ltd Improvements in or relating to anti-lock brake systems
US3610702A (en) * 1969-06-10 1971-10-05 Bendix Corp Adaptive braking system with hydraulically powered modulator
IT1122761B (en) * 1978-08-18 1986-04-23 Lucas Industries Ltd IMPROVEMENTS IN HYDRAULIC ANTI-SLIP BRAKING SYSTEMS FOR VEHICLES
DE3030621A1 (en) * 1979-08-14 1981-03-26 Lucas Industries Ltd., Birmingham, West Midlands HYDRAULIC BRAKE SYSTEM WITH ANTI-BLOCKING DEVICE FOR VEHICLES

Also Published As

Publication number Publication date
JPH0241462B2 (en) 1990-09-18
GB2146080A (en) 1985-04-11
GB8700977D0 (en) 1987-02-18
ES535591A0 (en) 1985-06-01
GB2146080B (en) 1988-01-20
JPS60151157A (en) 1985-08-09
FR2551409A1 (en) 1985-03-08
GB2184184A (en) 1987-06-17
FR2551409B1 (en) 1987-12-24
GB8323577D0 (en) 1983-10-05
GB2184184B (en) 1988-01-20

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Legal Events

Date Code Title Description
FD1A Patent lapsed

Effective date: 19970519