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GB2021220A - Brake Pressure Control Unit - Google Patents

Brake Pressure Control Unit

Info

Publication number
GB2021220A
GB2021220A GB7915871A GB7915871A GB2021220A GB 2021220 A GB2021220 A GB 2021220A GB 7915871 A GB7915871 A GB 7915871A GB 7915871 A GB7915871 A GB 7915871A GB 2021220 A GB2021220 A GB 2021220A
Authority
GB
United Kingdom
Prior art keywords
valve
brake
circuit
control unit
brake pressure
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.)
Granted
Application number
GB7915871A
Other versions
GB2021220B (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.)
Continental Teves AG and Co OHG
Original Assignee
Alfred Teves 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 Alfred Teves GmbH filed Critical Alfred Teves GmbH
Publication of GB2021220A publication Critical patent/GB2021220A/en
Application granted granted Critical
Publication of GB2021220B publication Critical patent/GB2021220B/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
    • B60T8/26—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

Landscapes

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

Abstract

A brake pressure control unit suitable for use with diagonally-split dual-circuit motor vehicle brake systems. One brake circuit (HzI, RzI) includes a first valve (35, 36), while the other circuit (HzII, RzII) includes a second valve (21, 23). The second valve (21, 23) is controlled in dependence upon the difference in pressure prevailing between the inlet (4) and the outlet (28) sides of the first valve (35, 36) which includes a stepped pressure reducing piston 29 and is preferably controlled by a vehicle deceleration responsive ball 36 and a spring 37 which may urge the stepped piston towards or away from its inlet end. In normal operation identical pressures exist in both circuits, and in the event of failure of one brake circuit the brake pressure of the other brake circuit is either not reduced; or reduced to a lesser extent, in comparison with normal operation (Fig. 2) by having a larger outlet end than inlet end to the second valve piston 5. <IMAGE>
GB7915871A 1978-05-10 1979-05-08 Brake pressure control unit Expired GB2021220B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19782820300 DE2820300A1 (en) 1978-05-10 1978-05-10 BRAKE PRESSURE CONTROL UNIT FOR A HYDRAULIC VEHICLE BRAKE SYSTEM

Publications (2)

Publication Number Publication Date
GB2021220A true GB2021220A (en) 1979-11-28
GB2021220B GB2021220B (en) 1982-09-02

Family

ID=6038975

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7915871A Expired GB2021220B (en) 1978-05-10 1979-05-08 Brake pressure control unit

Country Status (4)

Country Link
DE (1) DE2820300A1 (en)
FR (1) FR2425355B1 (en)
GB (1) GB2021220B (en)
IT (1) IT1165048B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2144502A (en) * 1983-07-01 1985-03-06 Sumitomo Electric Industries Control valve arrangement for diagonally-split dual-circuit brake system
GB2183008A (en) * 1985-11-13 1987-05-28 Automotive Products Plc Inertia valve

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1316076A (en) * 1971-03-19 1973-05-09 Girling Ltd Brake control unit
DE2201181C2 (en) * 1972-01-12 1974-02-14 Westinghouse Bremsen- U. Apparatebau Gmbh, 3000 Hannover Load-dependent brake force regulator for a dual-circuit brake system for vehicles that can be actuated by pressure medium
JPS5221661B2 (en) * 1972-08-12 1977-06-11
JPS5828139B2 (en) * 1976-07-12 1983-06-14 トヨタ自動車株式会社 Deceleration sensing type brake hydraulic control device
DE2753935C2 (en) * 1977-12-03 1986-05-28 Alfred Teves Gmbh, 6000 Frankfurt Brake pressure control unit for a hydraulic vehicle brake system
US4220375A (en) * 1978-04-04 1980-09-02 Itt Industries, Inc. Braking pressure control unit

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2144502A (en) * 1983-07-01 1985-03-06 Sumitomo Electric Industries Control valve arrangement for diagonally-split dual-circuit brake system
GB2183008A (en) * 1985-11-13 1987-05-28 Automotive Products Plc Inertia valve
GB2183008B (en) * 1985-11-13 1989-10-11 Automotive Products Plc Inertia valves

Also Published As

Publication number Publication date
DE2820300A1 (en) 1979-11-15
GB2021220B (en) 1982-09-02
FR2425355A1 (en) 1979-12-07
IT1165048B (en) 1987-04-22
DE2820300C2 (en) 1989-02-23
IT7922353A0 (en) 1979-05-04
FR2425355B1 (en) 1987-10-09

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Legal Events

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