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GB1469037A - Fluid pressure controlling device for brake system of wheeled vehilce - Google Patents

Fluid pressure controlling device for brake system of wheeled vehilce

Info

Publication number
GB1469037A
GB1469037A GB413975A GB413975A GB1469037A GB 1469037 A GB1469037 A GB 1469037A GB 413975 A GB413975 A GB 413975A GB 413975 A GB413975 A GB 413975A GB 1469037 A GB1469037 A GB 1469037A
Authority
GB
United Kingdom
Prior art keywords
inlet port
pressure
piston
plunger
fluid 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.)
Expired
Application number
GB413975A
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.)
Nissan Motor Co Ltd
Original Assignee
Nissan Motor Co 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 Nissan Motor Co Ltd filed Critical Nissan Motor Co Ltd
Priority to GB413975A priority Critical patent/GB1469037A/en
Priority to AU77790/75A priority patent/AU483371B2/en
Priority to NL7501374A priority patent/NL7501374A/en
Publication of GB1469037A publication Critical patent/GB1469037A/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
    • 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
    • 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
    • B60T8/282—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 ball and ramp

Landscapes

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

Abstract

1469037 Fluid pressure brakes NISSAN MOTOR CO Ltd 30 Jan 1975 4139/75 Heading F2F A fluid pressure controlling device, for a vehicle hydraulic braking system capable of developing independent and variable first and second fluid pressures for the front and rear brakes of the vehicle, comprises a housing 32 with a stepped bore 34, a differential plunger 36 axially movable in the bore, a first inlet port 24 supplying the first fluid pressure to a first end face of the plunger, a second inlet port 26 fluidly separate from the first for supplying the second fluid pressure to a middle portion of the plunger, an outlet port 30 communicable with the second inlet port through the bore, a piston 56 axially movable in the bore opposite a second end face of the plunger, the piston and second end face being fluidly isolated from the first and second inlet ports; a first compression spring 58 between the second end face and the piston, a third inlet port 28 for supplying one of the fluid pressures to a face of the piston more remote from the plunger, a decelerationresponsive member 66 in the bore between the piston and the third inlet port; a valve seat member 78 to break the fluid communication between the third inlet port and the piston when the member 66 is seated on the seat member 78, the arrangement being such that the second fluid pressure is transmitted to the outlet port without modulation when the pressure magnitude is below a critical value but modulated to a third pressure when the said value is exceeded, the rate of increase of the third pressure being lower than the rate of increase of said second pressure; the areas of the plunger end faces being so related that the critical value is raised when the first pressure is not supplied to the first inlet port and the member 66 being seated on the valve seat when the device is subjected to a deceleration larger than a predetermined value to prevent the load on spring 58 from increasing, the said load being so regulated that the critical value is raised as the gross weight of the vehicle increases.
GB413975A 1975-01-30 1975-01-30 Fluid pressure controlling device for brake system of wheeled vehilce Expired GB1469037A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB413975A GB1469037A (en) 1975-01-30 1975-01-30 Fluid pressure controlling device for brake system of wheeled vehilce
AU77790/75A AU483371B2 (en) 1975-01-30 1975-01-31 Pressure controlling device
NL7501374A NL7501374A (en) 1975-01-30 1975-02-05 FLUID PRESSURE CONTROL DEVICE FOR A HYDRAULIC BRAKE SYSTEM.

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB413975A GB1469037A (en) 1975-01-30 1975-01-30 Fluid pressure controlling device for brake system of wheeled vehilce
AU77790/75A AU483371B2 (en) 1975-01-30 1975-01-31 Pressure controlling device
NL7501374A NL7501374A (en) 1975-01-30 1975-02-05 FLUID PRESSURE CONTROL DEVICE FOR A HYDRAULIC BRAKE SYSTEM.

Publications (1)

Publication Number Publication Date
GB1469037A true GB1469037A (en) 1977-03-30

Family

ID=27156267

Family Applications (1)

Application Number Title Priority Date Filing Date
GB413975A Expired GB1469037A (en) 1975-01-30 1975-01-30 Fluid pressure controlling device for brake system of wheeled vehilce

Country Status (3)

Country Link
AU (1) AU483371B2 (en)
GB (1) GB1469037A (en)
NL (1) NL7501374A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2406550A1 (en) * 1977-10-20 1979-05-18 Tokico Ltd PRESSURE CONTROL VALVE FOR HYDRAULIC BRAKE
FR2424158A1 (en) * 1978-04-28 1979-11-23 Nissan Motor HYDRAULIC PRESSURE CONTROL VALVE FOR AUTOMOTIVE VEHICLE BRAKING SYSTEM
FR2425356A1 (en) * 1978-05-12 1979-12-07 Nissan Motor HYDRAULIC PRESSURE CONTROL VALVE FOR DUAL CIRCUIT BRAKE SYSTEM
EP0224329A1 (en) * 1985-11-13 1987-06-03 Automotive Products Public Limited Company Inertia valves

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2406550A1 (en) * 1977-10-20 1979-05-18 Tokico Ltd PRESSURE CONTROL VALVE FOR HYDRAULIC BRAKE
FR2424158A1 (en) * 1978-04-28 1979-11-23 Nissan Motor HYDRAULIC PRESSURE CONTROL VALVE FOR AUTOMOTIVE VEHICLE BRAKING SYSTEM
FR2425356A1 (en) * 1978-05-12 1979-12-07 Nissan Motor HYDRAULIC PRESSURE CONTROL VALVE FOR DUAL CIRCUIT BRAKE SYSTEM
EP0224329A1 (en) * 1985-11-13 1987-06-03 Automotive Products Public Limited Company Inertia valves

Also Published As

Publication number Publication date
NL7501374A (en) 1976-08-09
AU7779075A (en) 1976-08-05
AU483371B2 (en) 1976-08-05

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Legal Events

Date Code Title Description
PS Patent sealed
746 Register noted 'licences of right' (sect. 46/1977)
PCNP Patent ceased through non-payment of renewal fee