GB1346187A - Hydraulic servo unit for use in two-circuit braking equipment in vehicles - Google Patents

Hydraulic servo unit for use in two-circuit braking equipment in vehicles

Info

Publication number
GB1346187A
GB1346187A GB1017171A GB1017171A GB1346187A GB 1346187 A GB1346187 A GB 1346187A GB 1017171 A GB1017171 A GB 1017171A GB 1017171 A GB1017171 A GB 1017171A GB 1346187 A GB1346187 A GB 1346187A
Authority
GB
United Kingdom
Prior art keywords
pressure
chamber
plunger
connection
fails
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
GB1017171A
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.)
LANGEN V LANGEN CO
Original Assignee
LANGEN V LANGEN CO
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 LANGEN V LANGEN CO filed Critical LANGEN V LANGEN CO
Publication of GB1346187A publication Critical patent/GB1346187A/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
    • B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
    • B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
    • B60T13/12—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being liquid
    • B60T13/14—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being liquid using accumulators or reservoirs fed by pumps
    • B60T13/142—Systems with master cylinder
    • B60T13/145—Master cylinder integrated or hydraulically coupled with booster
    • B60T13/146—Part of the system directly actuated by booster pressure

Landscapes

  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Braking Systems And Boosters (AREA)
  • Braking Arrangements (AREA)

Abstract

1346187 Servo operated master cylinders V LANGEN [trading as LANGEN & CO] 20 April 1971 [20 April 1970] 10171/71 Heading F2F In an hydraulic servo unit for a dual braking system, leftward movement of a plunger part 17 causes a control edge 38 of a second plunger part 18 connected with lost-motion by means of a rod 20 to part 17, to cover a duct 30 communicating with a reservoir 2 and allowing pressure in a chamber 37 to build up, further movement of plunger 18 resulting in a control edge 39 thereof opening communication between a connection P, leading to an hydraulic pressure source and pressure chamber 37. Pressure in chamber 37 acts on a servo piston 22 causing fluid in a chamber 34 to be transmitted via a connection A and pipe 7 to brake cylinders 8a, 8b and pressure is also transmitted to brake cylinders 11a-11d by way of connection B. If the brake circuit connected to A fails servo piston 22 strikes a stop at the end of a short idle stroke, pressure in chamber 37 being generated by small shifts of plunger 17, 18 and giving a "feel" reaction at the brake pedal. If the circuit connected to B fails a direct mechanical connection between plunger 17, 18 and servo piston 22 is established causing pressurization of the brake cylinders 8a, 8b by way of connection A. The pressure source comprises a pump 1 drawing hydraulic fluid from reservoir 2 and passing it via, check valve 3 to an accumulator 4. If either pump 1 or accumulator 4 fails a check valve 5 prevents sudden pressure loss in chamber 37.
GB1017171A 1970-04-20 1971-04-20 Hydraulic servo unit for use in two-circuit braking equipment in vehicles Expired GB1346187A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19702018805 DE2018805A1 (en) 1970-04-20 1970-04-20 Hydraulic power amplifier for use in two-circuit brake systems !! of vehicles

Publications (1)

Publication Number Publication Date
GB1346187A true GB1346187A (en) 1974-02-06

Family

ID=5768511

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1017171A Expired GB1346187A (en) 1970-04-20 1971-04-20 Hydraulic servo unit for use in two-circuit braking equipment in vehicles

Country Status (3)

Country Link
DE (1) DE2018805A1 (en)
FR (1) FR2086204B3 (en)
GB (1) GB1346187A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3029120A1 (en) * 1979-08-02 1981-02-19 Nissan Motor HYDRAULIC SERVO AMPLIFIER
US4467700A (en) * 1979-01-17 1984-08-28 Nissan Motor Company, Limited Hydraulic boost mechanism
CN113442886A (en) * 2020-03-26 2021-09-28 比亚迪股份有限公司 Brake master cylinder, hydraulic brake system and vehicle

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3817037A (en) * 1971-12-24 1974-06-18 Itt Master cylinder for two-circuit brake systems
DE2602050C3 (en) * 1976-01-21 1983-11-03 Volkswagenwerk Ag, 3180 Wolfsburg Hydraulic booster valve, in particular for a hydraulic brake system of a motor vehicle
DE2734471C2 (en) * 1977-07-30 1986-09-18 Alfred Teves Gmbh, 6000 Frankfurt Hydraulic brake booster
GB2033512B (en) * 1978-10-12 1983-01-06 Lucas Industries Ltd Brake masters cylinder-relay valve combinations
DE2939602A1 (en) * 1979-09-29 1981-04-16 Robert Bosch Gmbh, 7000 Stuttgart HYDRAULIC MULTI-CIRCUIT BRAKING SYSTEM
DE3006610A1 (en) * 1980-02-22 1981-08-27 Zahnradfabrik Friedrichshafen Ag, 7990 Friedrichshafen HYDRAULIC BRAKE POWER AMPLIFIER

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4467700A (en) * 1979-01-17 1984-08-28 Nissan Motor Company, Limited Hydraulic boost mechanism
DE3029120A1 (en) * 1979-08-02 1981-02-19 Nissan Motor HYDRAULIC SERVO AMPLIFIER
CN113442886A (en) * 2020-03-26 2021-09-28 比亚迪股份有限公司 Brake master cylinder, hydraulic brake system and vehicle

Also Published As

Publication number Publication date
DE2018805A1 (en) 1971-11-11
FR2086204B3 (en) 1974-02-15
FR2086204A3 (en) 1971-12-31

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Legal Events

Date Code Title Description
PS Patent sealed
PLE Entries relating assignments, transmissions, licences in the register of patents
PCNP Patent ceased through non-payment of renewal fee