ES8400950A1 - Deceleration-sensing modulator valve assembly for vehicle braking systems - Google Patents

Deceleration-sensing modulator valve assembly for vehicle braking systems

Info

Publication number
ES8400950A1
ES8400950A1 ES517810A ES517810A ES8400950A1 ES 8400950 A1 ES8400950 A1 ES 8400950A1 ES 517810 A ES517810 A ES 517810A ES 517810 A ES517810 A ES 517810A ES 8400950 A1 ES8400950 A1 ES 8400950A1
Authority
ES
Spain
Prior art keywords
deceleration
ball
pressure
towards
piston
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
ES517810A
Other languages
Spanish (es)
Other versions
ES517810A0 (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 ES8400950A1 publication Critical patent/ES8400950A1/en
Publication of ES517810A0 publication Critical patent/ES517810A0/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
    • B60T8/26—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force characterised by producing differential braking between front and rear wheels
    • B60T8/28—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force characterised by producing differential braking between front and rear wheels responsive to deceleration
    • B60T8/285—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force characterised by producing differential braking between front and rear wheels responsive to deceleration using horizontal moving mass
    • 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
    • B60T11/00—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant
    • B60T11/10—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant transmitting by fluid means, e.g. hydraulic
    • B60T11/28—Valves specially adapted therefor
    • B60T11/34—Pressure reducing or limiting valves
    • 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
    • B60T8/18—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 vehicle weight or load, e.g. load distribution
    • B60T8/1812—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 vehicle weight or load, e.g. load distribution characterised by the means for pressure reduction
    • B60T8/1831—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 vehicle weight or load, e.g. load distribution characterised by the means for pressure reduction pressure reducing or limiting valves
    • 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
    • B60T8/26—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force characterised by producing differential braking between front and rear wheels

Landscapes

  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Hydraulic Control Valves For Brake Systems (AREA)

Abstract

In one construction, Figure 1, a deceleration sensing ball (17) is housed in a cage (18) which is resiliently biassed towards a step (19) in the housing (1) and towards a shoulder (23) on a control piston (9) by a spring (20). A valve seat (15) is provided on the control piston at one end of a piston passage (16) that normally connects the inlet port (7) connected to a master cylinder with outlet port (8) connected to the rear wheel brakes. A pressure effective area (A1) of the control piston normally subject to inlet pressure is slightly less than an oppositely acting pressure effective area (A2) subject at all times to outlet pressure. When the ball (17) engages with the valve seat (15) due to excessive deceleration a further rise in inlet pressure urges the piston towards the outlet, and the ball is unseated from the seat (15) by a lip (22) on the cage, to produce a step in the output characteristic. An arrangement (Figure 4) for use with a dual circuit system, one circuit supplying the front wheels and the other circuit supplying the rear wheels through the modulator valve assembly.
ES517810A 1981-12-02 1982-11-30 MODULATOR VALVE ASSEMBLY WITH DECELERATION DETECTION FOR VEHICLE BRAKE SYSTEM. Granted ES517810A0 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB08136310A GB2111620B (en) 1981-12-02 1981-12-02 Deceleration-sensing modulator valve assembly for vehicle braking systems

Publications (2)

Publication Number Publication Date
ES8400950A1 true ES8400950A1 (en) 1983-11-16
ES517810A0 ES517810A0 (en) 1983-11-16

Family

ID=10526318

Family Applications (1)

Application Number Title Priority Date Filing Date
ES517810A Granted ES517810A0 (en) 1981-12-02 1982-11-30 MODULATOR VALVE ASSEMBLY WITH DECELERATION DETECTION FOR VEHICLE BRAKE SYSTEM.

Country Status (6)

Country Link
JP (1) JPS58110351A (en)
DE (1) DE3244481A1 (en)
ES (1) ES517810A0 (en)
FR (1) FR2517270B1 (en)
GB (1) GB2111620B (en)
IN (1) IN156198B (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3235032A1 (en) * 1982-09-22 1984-03-22 Alfred Teves Gmbh, 6000 Frankfurt BRAKE DELAY-RELATED BRAKE PRESSURE REDUCER
DE3328956A1 (en) * 1983-08-11 1985-02-21 Robert Bosch Gmbh, 7000 Stuttgart Dual circuit brake system influenceable as a function of the load
DE3514557A1 (en) * 1985-04-23 1986-10-23 Alfred Teves Gmbh, 6000 Frankfurt Brake pressure control unit
GB9001566D0 (en) * 1990-01-23 1990-03-21 Gen Motors France Disc brake
GB9001565D0 (en) * 1990-01-23 1990-03-21 Gen Motors France Disc brake

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2319479A1 (en) * 1975-08-01 1977-02-25 Creusot Loire PLASTIC DEGASING DEVICE
JPS5719331Y2 (en) * 1977-02-21 1982-04-22
JPS5753724Y2 (en) * 1977-04-15 1982-11-20
DE2814414A1 (en) * 1978-04-04 1979-10-18 Teves Gmbh Alfred BRAKE FORCE CONTROLLER FOR DUAL-CIRCUIT BRAKE SYSTEM
DE3021952C2 (en) * 1980-06-12 1986-10-30 Alfred Teves Gmbh, 6000 Frankfurt Deceleration-dependent brake pressure control device for a hydraulic vehicle brake system

Also Published As

Publication number Publication date
GB2111620B (en) 1986-02-12
GB2111620A (en) 1983-07-06
JPS58110351A (en) 1983-06-30
FR2517270B1 (en) 1985-11-08
ES517810A0 (en) 1983-11-16
FR2517270A1 (en) 1983-06-03
IN156198B (en) 1985-06-01
DE3244481A1 (en) 1983-06-16

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