JPS56146449A - Brake tandem master cylinder - Google Patents

Brake tandem master cylinder

Info

Publication number
JPS56146449A
JPS56146449A JP4890580A JP4890580A JPS56146449A JP S56146449 A JPS56146449 A JP S56146449A JP 4890580 A JP4890580 A JP 4890580A JP 4890580 A JP4890580 A JP 4890580A JP S56146449 A JPS56146449 A JP S56146449A
Authority
JP
Japan
Prior art keywords
pressure
fluid
chamber
supply chamber
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.)
Pending
Application number
JP4890580A
Other languages
Japanese (ja)
Inventor
Hitoshi Kubota
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 JP4890580A priority Critical patent/JPS56146449A/en
Priority to DE19813114059 priority patent/DE3114059A1/en
Priority to FR8107389A priority patent/FR2480215B1/en
Priority to GB8111621A priority patent/GB2074678B/en
Publication of JPS56146449A publication Critical patent/JPS56146449A/en
Pending 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
    • B60T8/262—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 using valves with stepped characteristics
    • B60T8/265—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 using valves with stepped characteristics for hydraulic brake systems
    • 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
    • B60T11/16—Master control, e.g. master cylinders
    • B60T11/20—Tandem, side-by-side, or other multiple master cylinder units

Landscapes

  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Transmission Of Braking Force In Braking Systems (AREA)

Abstract

PURPOSE: To make a fluid pressure controlling parts unnecessary, by providing a differential pressure valve opening above the predetermined pressure in a supply chamber and a check valve to prevent the fluid from flowing from a supply chamber to a reservoir, between the supply chamber locatd in the middle of a small diameter part and the large diameter part of a step piston and the reservoir.
CONSTITUTION: A primary piston 3 and a secondary piston 4 are moved by operation of a brake. The capacity of a supply chamber 16 decreases as the secondary piston 4 is pushed to the left side, a part of actuating fluid in the supply chamber 16 pushed by the piston 4 is fed into a pressure chamber 20 through the ports 24 and 25 under the differential pressure valve closing, and the fluid is supplied with the front wheel brake circuit together with the fluid in the chamber 20, bringing the brake into action. When the pressure in the pressure chamber 20 rises, the fluid in the chamber 16 does not flow into it any more, therefore, the pressure in the supply chamber 16 rises. When the pressure in the supply chamber 16 reaches above the predetermined value, the differential pressure valve 37 opens to relieve a part of the fluid to the reservoir 2, so that the inside pressure of the chamber 16 is maintained in the range of the predetermined pressure. As the result, the rise of the fluid pressure for the rear wheel brake is kept low as compared with the rise of that for the front wheel brake in relation to the areas of the cross sections A1 and A2 of the ports 1a and 1b of the large and small diameters.
COPYRIGHT: (C)1981,JPO&Japio
JP4890580A 1980-04-14 1980-04-14 Brake tandem master cylinder Pending JPS56146449A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP4890580A JPS56146449A (en) 1980-04-14 1980-04-14 Brake tandem master cylinder
DE19813114059 DE3114059A1 (en) 1980-04-14 1981-04-07 "TANDEM MAIN CYLINDER FOR THE BRAKE SYSTEM OF A MOTOR VEHICLE"
FR8107389A FR2480215B1 (en) 1980-04-14 1981-04-13 TANDEM MASTER CYLINDER OF A BRAKING SYSTEM FOR A MOTOR VEHICLE
GB8111621A GB2074678B (en) 1980-04-14 1981-04-14 Anti-lock brake system for an automotive vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4890580A JPS56146449A (en) 1980-04-14 1980-04-14 Brake tandem master cylinder

Publications (1)

Publication Number Publication Date
JPS56146449A true JPS56146449A (en) 1981-11-13

Family

ID=12816274

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4890580A Pending JPS56146449A (en) 1980-04-14 1980-04-14 Brake tandem master cylinder

Country Status (4)

Country Link
JP (1) JPS56146449A (en)
DE (1) DE3114059A1 (en)
FR (1) FR2480215B1 (en)
GB (1) GB2074678B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4694652A (en) * 1986-04-16 1987-09-22 General Motors Corporation Master cylinder with reservoir mounting arrangement

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1949569U (en) * 1962-09-26 1966-11-10 Teves Kg Alfred DOUBLE CIRCULAR MASTER CYLINDER.
US4133178A (en) * 1977-04-18 1979-01-09 General Motors Corporation Quick take-up master cylinder

Also Published As

Publication number Publication date
GB2074678A (en) 1981-11-04
FR2480215A1 (en) 1981-10-16
DE3114059A1 (en) 1982-02-25
FR2480215B1 (en) 1986-05-09
GB2074678B (en) 1984-05-23

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