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GB1440958A - Electrohydraulic servo-distributor - Google Patents

Electrohydraulic servo-distributor

Info

Publication number
GB1440958A
GB1440958A GB5942773A GB5942773A GB1440958A GB 1440958 A GB1440958 A GB 1440958A GB 5942773 A GB5942773 A GB 5942773A GB 5942773 A GB5942773 A GB 5942773A GB 1440958 A GB1440958 A GB 1440958A
Authority
GB
United Kingdom
Prior art keywords
valve
pressure
dec
communicates
output
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
GB5942773A
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.)
Messier Hispano SA
Original Assignee
Messier Hispano SA
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 Messier Hispano SA filed Critical Messier Hispano SA
Publication of GB1440958A publication Critical patent/GB1440958A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
    • F15B13/042—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by fluid pressure
    • F15B13/043—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by fluid pressure with electrically-controlled pilot valves
    • F15B13/0438—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by fluid pressure with electrically-controlled pilot valves the pilot valves being of the nozzle-flapper type
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/2278—Pressure modulating relays or followers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/86493—Multi-way valve unit
    • Y10T137/86574—Supply and exhaust
    • Y10T137/86582—Pilot-actuated
    • Y10T137/8659—Variable orifice-type modulator
    • Y10T137/86598—Opposed orifices; interposed modulator

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Servomotors (AREA)
  • Magnetic Bearings And Hydrostatic Bearings (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)

Abstract

1440958 Fluid-pressure servomotor systems MESSIER-HISPANO 21 Dec 1973 [29 Dec 1972] 59427/73 Heading G3P An electro-hydraulic servo-distributer comprises a primary stage 1 having drive means formed by a magnetic circuit including two electromagnets 3, 31 co-operating with permanent magnets 6, 6' so that the fields act in the same direction across one airgap 11' and in opposite directions across a second air-gap 11 to provide a biasing torque on a movable assembly 10 carrying a baffle 19 co-operating with jets 20, 20'. The latter are supplied from the inlet 21 of a secondary stage 2 by way of a filter 23 and produce a pressure differential to operate a spring- centred valve 25. Torsion bars 15, 15' support the movable assembly. In a modification, the valve 25 has chambers (32, 32'), Fig. 4 (not shown) in communication with the pilot stage and one end (37) in communication with an exhaust port (38) while the other end (36) communicates with the output (34) of the valve. The output pressure at the port (34) is inversely proportional to the strength of the current in the coils (4, 4'). In a further modification, the end (37), Fig. 6 (not shown), of the valve 25 communicates with the supply aperture so that the output pressure is not sensitive to small variations in the return pressure.
GB5942773A 1972-12-29 1973-12-21 Electrohydraulic servo-distributor Expired GB1440958A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7247007A FR2212498B1 (en) 1972-12-29 1972-12-29

Publications (1)

Publication Number Publication Date
GB1440958A true GB1440958A (en) 1976-06-30

Family

ID=9109540

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5942773A Expired GB1440958A (en) 1972-12-29 1973-12-21 Electrohydraulic servo-distributor

Country Status (5)

Country Link
US (1) US3892260A (en)
DE (1) DE2364350C3 (en)
FR (1) FR2212498B1 (en)
GB (1) GB1440958A (en)
IT (1) IT1000593B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2123185A (en) * 1982-07-02 1984-01-25 Dowty Hydraulic Units Ltd Eleotro-hydraulic servo valves

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3109560A1 (en) * 1981-03-13 1982-09-30 Robert Bosch Gmbh, 7000 Stuttgart FUEL INJECTION SYSTEM
DE3122436A1 (en) * 1981-06-05 1983-01-05 Mannesmann Rexroth GmbH, 8770 Lohr Proportional valve
FR2521232B1 (en) * 1982-02-11 1986-02-21 Messier Hispano Sa ELECTRO-HYDRAULIC SERVO-DISTRIBUTOR
US4458839A (en) * 1982-03-03 1984-07-10 Masco Corporation Thermostatic valve assembly
DE3225179A1 (en) * 1982-07-06 1984-01-12 Robert Bosch Gmbh, 7000 Stuttgart PRESSURE CONTROL VALVE
AT386054B (en) * 1985-09-06 1988-06-27 Vni I Pk I Promy Gidroprivodov ELECTROHYDRAULIC AMPLIFIER TRANSFORMER
PL3536980T3 (en) * 2018-03-08 2023-04-17 Hamilton Sundstrand Corporation Valve body for a servovalve
PL3557103T3 (en) * 2018-04-19 2021-07-19 Hamilton Sundstrand Corporation Flapper servo valve nozzle housing
CN108716489B (en) * 2018-08-07 2020-04-10 上海航天控制技术研究所 Power stage structure of electro-hydraulic pressure servo valve

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2850685A (en) * 1953-08-07 1958-09-02 Gen Controls Co Electromagnetic operator and mount therefor
US2904055A (en) * 1957-02-13 1959-09-15 Textron Inc Hydraulic amplifier valve with feedback
FR1194539A (en) * 1958-03-26 1959-11-10 Rech S Etudes Very low leakage hydraulic servo-valve
FR1258366A (en) * 1960-03-02 1961-04-14 Rech Etudes Production Sarl primary stage with vane and torsion tube for two-stage hydraulic distributor
FR1390190A (en) * 1963-07-12 1965-02-26 Rech Etudes Prod Two-stage electro-hydraulic servo-valve with internal mechanical feedback
US3366132A (en) * 1965-10-24 1968-01-30 Charles R. Fore Electrically actuated hydraulic servovalve and torque motor
US3454026A (en) * 1968-06-26 1969-07-08 Bendix Corp Pressure feedback

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2123185A (en) * 1982-07-02 1984-01-25 Dowty Hydraulic Units Ltd Eleotro-hydraulic servo valves

Also Published As

Publication number Publication date
FR2212498B1 (en) 1976-01-30
US3892260A (en) 1975-07-01
DE2364350A1 (en) 1974-07-04
IT1000593B (en) 1976-04-10
DE2364350C3 (en) 1981-10-15
FR2212498A1 (en) 1974-07-26
DE2364350B2 (en) 1981-02-26

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee