IT991256B - FLOW CONTROL DEVICE FOR A HYDRAULIC SYSTEM WITH OPEN CENTRAL PART - Google Patents

FLOW CONTROL DEVICE FOR A HYDRAULIC SYSTEM WITH OPEN CENTRAL PART

Info

Publication number
IT991256B
IT991256B IT2653373A IT2653373A IT991256B IT 991256 B IT991256 B IT 991256B IT 2653373 A IT2653373 A IT 2653373A IT 2653373 A IT2653373 A IT 2653373A IT 991256 B IT991256 B IT 991256B
Authority
IT
Italy
Prior art keywords
control device
flow control
central part
hydraulic system
open central
Prior art date
Application number
IT2653373A
Other languages
Italian (it)
Original Assignee
Borg Warner
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 Borg Warner filed Critical Borg Warner
Application granted granted Critical
Publication of IT991256B publication Critical patent/IT991256B/en

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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/30—Directional control
    • F15B2211/31—Directional control characterised by the positions of the valve element
    • F15B2211/3105—Neutral or centre positions
    • F15B2211/3116—Neutral or centre positions the pump port being open in the centre position, e.g. so-called open centre
    • 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
    • F15B2211/50563—Pressure control characterised by the type of pressure control means the pressure control means controlling a differential pressure
    • F15B2211/50572—Pressure control characterised by the type of pressure control means the pressure control means controlling a differential pressure using a pressure compensating valve for controlling the pressure difference across a flow control valve
    • 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
    • F15B2211/515—Pressure control characterised by the connections of the pressure control means in the circuit
    • F15B2211/5156—Pressure control characterised by the connections of the pressure control means in the circuit being connected to a return line and a directional control valve
    • 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
    • F15B2211/52—Pressure control characterised by the type of actuation
    • F15B2211/528—Pressure control characterised by the type of actuation actuated by fluid pressure
    • 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
    • F15B2211/75—Control of speed of the output member

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Multiple-Way Valves (AREA)
  • Flow Control (AREA)
IT2653373A 1972-07-13 1973-07-12 FLOW CONTROL DEVICE FOR A HYDRAULIC SYSTEM WITH OPEN CENTRAL PART IT991256B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US27130272A 1972-07-13 1972-07-13

Publications (1)

Publication Number Publication Date
IT991256B true IT991256B (en) 1975-07-30

Family

ID=23035008

Family Applications (1)

Application Number Title Priority Date Filing Date
IT2653373A IT991256B (en) 1972-07-13 1973-07-12 FLOW CONTROL DEVICE FOR A HYDRAULIC SYSTEM WITH OPEN CENTRAL PART

Country Status (11)

Country Link
JP (1) JPS4957276A (en)
AU (1) AU470644B2 (en)
BE (1) BE802104A (en)
BR (1) BR7305256D0 (en)
CA (1) CA991956A (en)
DE (1) DE2335702A1 (en)
FR (1) FR2193159B1 (en)
GB (1) GB1388526A (en)
IT (1) IT991256B (en)
NL (1) NL7309652A (en)
SE (1) SE399305B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2404524C2 (en) * 1974-01-31 1982-04-01 Elektro-Mechanik Gmbh, 5963 Wenden Multi-way servo valve
JPS5272074A (en) * 1975-12-06 1977-06-16 Kawasaki Heavy Ind Ltd Multicontrol valve available pressure compensation
US4036245A (en) * 1975-12-29 1977-07-19 Sundstrand Corporation Pressure compensated hydraulic control valve
US4569367A (en) * 1985-01-14 1986-02-11 Commercial Shearing, Inc. Hydraulic valve inlet unloaders

Also Published As

Publication number Publication date
NL7309652A (en) 1974-01-15
FR2193159A1 (en) 1974-02-15
BE802104A (en) 1973-11-05
BR7305256D0 (en) 1974-08-15
JPS4957276A (en) 1974-06-04
GB1388526A (en) 1975-03-26
AU5774873A (en) 1975-01-09
CA991956A (en) 1976-06-29
DE2335702A1 (en) 1974-01-24
AU470644B2 (en) 1976-03-25
SE399305B (en) 1978-02-06
FR2193159B1 (en) 1976-04-30

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