GB1156729A - Priority Flow Divider Valve for Closed Center Hydraulic System. - Google Patents

Priority Flow Divider Valve for Closed Center Hydraulic System.

Info

Publication number
GB1156729A
GB1156729A GB3472966A GB3472966A GB1156729A GB 1156729 A GB1156729 A GB 1156729A GB 3472966 A GB3472966 A GB 3472966A GB 3472966 A GB3472966 A GB 3472966A GB 1156729 A GB1156729 A GB 1156729A
Authority
GB
United Kingdom
Prior art keywords
spool
inlet passage
outlet
passage
priority
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
GB3472966A
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.)
Navistar Inc
Original Assignee
International Harverster Corp
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 International Harverster Corp filed Critical International Harverster Corp
Publication of GB1156729A publication Critical patent/GB1156729A/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
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
    • 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
    • F15B13/022—Flow-dividers; Priority valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
    • F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
    • F16K11/06—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements
    • F16K11/065—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members
    • F16K11/07—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members with cylindrical slides
    • F16K11/0716—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members with cylindrical slides with fluid passages through the valve member
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/205—Systems with pumps
    • F15B2211/2053—Type of pump
    • F15B2211/20546—Type of pump variable capacity
    • F15B2211/20553—Type of pump variable capacity with pilot circuit, e.g. for controlling a swash plate
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/25—Pressure control functions
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/40—Flow control
    • F15B2211/405—Flow control characterised by the type of flow control means or valve
    • F15B2211/40515—Flow control characterised by the type of flow control means or valve with variable throttles or orifices
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/40—Flow control
    • F15B2211/45—Control of bleed-off flow, e.g. control of bypass flow to the return line
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/40—Flow control
    • F15B2211/455—Control of flow in the feed line, i.e. meter-in control
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/50—Pressure control
    • F15B2211/505—Pressure control characterised by the type of pressure control means
    • F15B2211/50509—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means
    • F15B2211/50518—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means using pressure relief valves
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/705—Output members, e.g. hydraulic motors or cylinders or control therefor characterised by the type of output members or actuators
    • F15B2211/7051—Linear output members
    • F15B2211/7053—Double-acting output members
    • F15B2211/7054—Having equal piston areas
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/71—Multiple output members, e.g. multiple hydraulic motors or cylinders
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/78—Control of multiple output members
    • F15B2211/781—Control of multiple output members one or more output members having priority
    • 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
    • Y10T137/2496—Self-proportioning or correlating systems
    • Y10T137/2559—Self-controlled branched flow systems
    • Y10T137/265—Plural outflows
    • Y10T137/2663—Pressure responsive

Abstract

1,156,729. Power steering systems. INTERNATIONAL HARVESTER CO. 3 Aug., 1966 [6 Aug., 1965], No. 34729/66. Heading B7H. [Also in Divisions B8 and F2] A priority flow divider valve has a spool 30 slidable in a bore 28 to control flow of fluid pressure from two inlet passages 34, 36 to a priority outlet 37 connected to a steering valve 18 and two secondary outlet passages 40, 42 connected to an auxiliary circuit 24. The spool has an internal bore housing a spring 56 which biases the spool towards the end stop 50 and has at least one radial opening 62 in flats 76 formed on the end of a central land 68 to communicate fluid pressure in inlet passage 34 to the left-hand end chamber of the bore 28 at all positions of the spool. The inlet passage 34 has a restriction 44 and the inlet passage 36 communicate with the right-hand end chamber 54 of the bore 28 by means of passage 60. The spool is formed with three lands 66, 68, 70 spaced by grooves 72, 74 and is arranged in its right-hand rest position to connect inlet passage 34 with priority outlet 37 via the restriction between spool land 68 and land 92 and to connect inlet passage 36 via groove 74 to secondary outlet passage 42. Demand by the steering valve moves the spool into an intermediate position in which groove 72 communicates fluid pressure from inlet passage 34 to the priority outlet 37 due to the pressure drop in the outlet 37 being communicated to the left-hand end chamber of bore 28. The two secondary outlets 40, 42 are obstructed by lands 68, 70 and the priority outlet pressure is regulated by relief valve 46 connected to reservoir 12. When the supply pump exceeds the demands of the steering the pressure rise in chamber 54 moves the spool to the position shown to maintain restricted communication of the inlet passage 34 with the priority outlet 37 to supply its demands and in addition to connect inlet passage 36 with the secondary outlet passage 40 to allow the auxiliary circuit, e.g. a power lift circuit to be operated. When the steering valve 18 is closed the spool 30 moves back to its righthand rest position communicating pressure fluid from the inlet passage 36 to the auxiliary circuit by way of the secondary outlet passage 42.
GB3472966A 1965-08-06 1966-08-03 Priority Flow Divider Valve for Closed Center Hydraulic System. Expired GB1156729A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US47772565 US3334705A (en) 1965-08-06 1965-08-06 Priority valve for closed center system

Publications (1)

Publication Number Publication Date
GB1156729A true GB1156729A (en) 1969-07-02

Family

ID=23897101

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3472966A Expired GB1156729A (en) 1965-08-06 1966-08-03 Priority Flow Divider Valve for Closed Center Hydraulic System.

Country Status (3)

Country Link
US (1) US3334705A (en)
DE (1) DE1550342B2 (en)
GB (1) GB1156729A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2125519A (en) * 1982-08-19 1984-03-07 Cistermiser Ltd Fluid flow control valve
CN107725515A (en) * 2016-08-10 2018-02-23 博世力士乐（常州）有限公司 Hydraulic valve
CN110809684A (en) * 2017-07-07 2020-02-18 斯堪尼亚商用车有限公司 Oil distributor for lubrication and cooling system in powertrain

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1298801B (en) * 1966-03-25 1969-07-03 Zahnradfabrik Friedrichshafen Hydraulic three-way flow regulator
DE1655899A1 (en) * 1966-05-11 1970-05-14 Zahnradfabrik Friedrichshafen Pressure medium control device
US3433240A (en) * 1967-04-18 1969-03-18 Case Co J I Hydraulic pressure relief valve unit
GB1394217A (en) * 1971-07-10 1975-05-14 Girling Ltd Control valve assemblies for use in hydraulic braking systems for vehicles
US3817266A (en) * 1972-03-20 1974-06-18 Trw Inc Hydraulic system with flow control means to control pressure distribution between a primary and a secondary hydraulic circuit
US3979907A (en) * 1973-09-10 1976-09-14 Parker-Hannifin Corporation Priority control valve
US3955473A (en) * 1973-10-05 1976-05-11 Trw Inc. Power steering gear with proportional flow divider
US4002220A (en) * 1975-07-11 1977-01-11 Towmotor Corporation Priority steer system--hydraulic
DE2544163C2 (en) * 1975-10-03 1982-12-02 Alfred Teves Gmbh, 6000 Frankfurt Pressure-dependent switching valve for distributing a pressure medium to two consumers
US4180089A (en) * 1977-09-30 1979-12-25 Ingersoll-Rand Company Thrust piston biasing means
US4129987A (en) * 1977-10-17 1978-12-19 Gresen Manufacturing Company Hydraulic control system
US4214446A (en) * 1979-01-22 1980-07-29 International Harvester Company Pressure-flow compensated hydraulic priority system providing signals controlling priority valve
US4552168A (en) * 1984-05-15 1985-11-12 J. I. Case Company Stabilizer for priority flow divider valve
DE4026848C2 (en) * 1990-08-24 1996-09-05 Rexroth Mannesmann Gmbh Hydraulic control device
GB2277066B (en) * 1993-03-24 1996-02-28 Ultra Hydraulics Ltd Hydraulic flow control valve assemblies
US5896737A (en) * 1997-06-16 1999-04-27 United Technologies Corporation Combined pressure regulating and fuel flow system
US6675570B2 (en) 2000-06-15 2004-01-13 Argo-Tech Corporation Low-cost general aviation fuel control system
US7036625B2 (en) * 2002-11-08 2006-05-02 Nmhg Oregon, Inc. Integrated hydraulic control system
EP2673178B1 (en) 2011-02-09 2018-10-17 Allison Transmission, Inc. Scavenge pump oil level control system and method
KR20140003588A (en) 2011-02-17 2014-01-09 알리손 트랜스미션, 인크. Hydraulic system and method for hybrid vehicle
KR20140006941A (en) * 2011-03-11 2014-01-16 알리손 트랜스미션, 인크. Clogged filter detection system and method
AU2012273001B2 (en) 2011-06-22 2015-04-23 Allison Transmission, Inc. Low level oil detection system and method
US9605411B2 (en) * 2014-09-26 2017-03-28 Caterpillar Inc. Brake charge valve with set minimum fixed hydro-mechanical pressure by-pass function

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US818711A (en) * 1905-09-20 1906-04-24 William N Rumely Steam-engine governor.
US3123089A (en) * 1959-07-17 1964-03-03 Flow divider and control valve

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2125519A (en) * 1982-08-19 1984-03-07 Cistermiser Ltd Fluid flow control valve
CN107725515A (en) * 2016-08-10 2018-02-23 博世力士乐（常州）有限公司 Hydraulic valve
CN110809684A (en) * 2017-07-07 2020-02-18 斯堪尼亚商用车有限公司 Oil distributor for lubrication and cooling system in powertrain
CN110809684B (en) * 2017-07-07 2021-08-03 斯堪尼亚商用车有限公司 Oil distributor for lubrication and cooling system in powertrain

Also Published As

Publication number Publication date
DE1550342B2 (en) 1971-02-18
DE1550342A1 (en) 1970-07-23
US3334705A (en) 1967-08-08

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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