FR2441076A1 - Circuit hydraulique comportant une pompe reliee a un appareil utilisateur - Google Patents

Circuit hydraulique comportant une pompe reliee a un appareil utilisateur

Info

Publication number
FR2441076A1
FR2441076A1 FR7927549A FR7927549A FR2441076A1 FR 2441076 A1 FR2441076 A1 FR 2441076A1 FR 7927549 A FR7927549 A FR 7927549A FR 7927549 A FR7927549 A FR 7927549A FR 2441076 A1 FR2441076 A1 FR 2441076A1
Authority
FR
France
Prior art keywords
hydraulic circuit
pressure drop
user apparatus
pump connected
flow
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.)
Granted
Application number
FR7927549A
Other languages
English (en)
Other versions
FR2441076B1 (fr
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.)
Deere and Co
Original Assignee
Deere and 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 Deere and Co filed Critical Deere and Co
Publication of FR2441076A1 publication Critical patent/FR2441076A1/fr
Application granted granted Critical
Publication of FR2441076B1 publication Critical patent/FR2441076B1/fr
Granted 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
    • F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
    • F15B21/04—Special measures taken in connection with the properties of the fluid
    • F15B21/045—Compensating for variations in viscosity or temperature
    • 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
    • Y10T137/2574—Bypass or relief controlled by main line fluid condition
    • Y10T137/2579—Flow rate responsive
    • 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
    • Y10T137/2574—Bypass or relief controlled by main line fluid condition
    • Y10T137/2605—Pressure responsive
    • Y10T137/2612—Common sensor for both bypass or relief valve and other branch valve
    • 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
    • Y10T137/2574—Bypass or relief controlled by main line fluid condition
    • Y10T137/2605—Pressure responsive
    • Y10T137/2612—Common sensor for both bypass or relief valve and other branch valve
    • Y10T137/2615—Bypass or relief valve opens as other branch valve closes
    • 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
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7837—Direct response valves [i.e., check valve type]
    • Y10T137/7869—Biased open

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Analytical Chemistry (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Temperature-Responsive Valves (AREA)
  • Details Of Reciprocating Pumps (AREA)
  • Valve Device For Special Equipments (AREA)
  • Safety Valves (AREA)
  • Multiple-Way Valves (AREA)
  • Reciprocating Pumps (AREA)
  • Control Of Positive-Displacement Pumps (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

CETTE INVENTION CONCERNE UN CIRCUIT HYDRAULIQUE COMPORTANT UNE POMPE 16 RELIEE PAR UN CONDUIT 22 A UN APPAREIL UTILISATEUR 24. UNE VALVE DE DERIVATION 30 EST RELIEE AU CONDUIT 22. ELLES EST FERMEE PAR UNE CHUTE DE PRESSION APPARAISSANT CHAQUE FOIS POUR DEUX VALEURS DE VISCOSITE DIFFERENTES, OU BIEN POUR UNE CHUTE DE PRESSION APPARAISSANT POUR UN PREMIER ET UN SECOND DEBITS, OU ENCORE POUR UNE CHUTE DE PRESSION APPARAISSANT EN FONCTION DU DEBIT POUR UNE VALEUR DE VISCOSITE PREDETERMINEE ET EN FONCTION DU DEBIT SANS INFLUENCE DE LA VISCOSITE. CET AGENCEMENT PERMET UNE MISE HORS CITCUIT DU SYSTEME HYDRAULIQUE AU MOMENT DE LA MISE EN ROUTE.
FR7927549A 1978-11-09 1979-11-08 Circuit hydraulique comportant une pompe reliee a un appareil utilisateur Granted FR2441076A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/959,239 US4249558A (en) 1978-11-09 1978-11-09 Bypass valve

Publications (2)

Publication Number Publication Date
FR2441076A1 true FR2441076A1 (fr) 1980-06-06
FR2441076B1 FR2441076B1 (fr) 1984-06-22

Family

ID=25501818

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7927549A Granted FR2441076A1 (fr) 1978-11-09 1979-11-08 Circuit hydraulique comportant une pompe reliee a un appareil utilisateur

Country Status (8)

Country Link
US (1) US4249558A (fr)
CA (1) CA1143628A (fr)
DE (1) DE2944672A1 (fr)
ES (1) ES485839A1 (fr)
FR (1) FR2441076A1 (fr)
GB (1) GB2036929B (fr)
IT (1) IT1164011B (fr)
MX (1) MX149167A (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4903505A (en) * 1989-01-30 1990-02-27 Hoshizaki Electric Co., Ltd. Automatic ice manufacturing apparatus
US5718255A (en) * 1997-01-09 1998-02-17 Generac Corporation Flow-responsive diverting valve
US6453668B1 (en) * 2000-07-12 2002-09-24 Deere & Company Transmission with cold start valve
US8096781B2 (en) * 2008-09-24 2012-01-17 Caterpillar Inc. Hydraulic pump system with reduced cold start parasitic loss
EP2589822B1 (fr) * 2010-06-30 2016-08-31 Volvo Construction Equipment AB Dispositif de commande pour une pompe hydraulique de machine de construction
IT201600069965U1 (it) * 2016-07-05 2018-01-05 Fluid O Tech Srl Pompa idraulica e rispettiva valvola multifunzione.

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3115156A (en) * 1960-06-29 1963-12-24 Dunlop Rubber Co Fluid pressure surge dampers particularly for braking systems
GB953737A (en) * 1961-02-22 1964-04-02 Cav Ltd Means for obtaining a pressure drop dependent on the viscosity of a liquid
GB1189227A (en) * 1967-07-07 1970-04-22 Schwarza Chemiefaser Valve for Regulating the Flow of Fluids
FR2022833A1 (fr) * 1968-11-08 1970-08-07 White Motor Corp
FR2156324A2 (fr) * 1969-12-18 1973-05-25 Massey Ferguson Sa
FR2202250A1 (fr) * 1972-10-10 1974-05-03 Massey Ferguson Services Nv

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3234961A (en) * 1963-08-08 1966-02-15 Walker Mfg Co Velocity sensitive check valve
US3889709A (en) * 1972-10-10 1975-06-17 Massey Ferguson Inc Hydraulic unloading valve

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3115156A (en) * 1960-06-29 1963-12-24 Dunlop Rubber Co Fluid pressure surge dampers particularly for braking systems
GB953737A (en) * 1961-02-22 1964-04-02 Cav Ltd Means for obtaining a pressure drop dependent on the viscosity of a liquid
GB1189227A (en) * 1967-07-07 1970-04-22 Schwarza Chemiefaser Valve for Regulating the Flow of Fluids
FR2022833A1 (fr) * 1968-11-08 1970-08-07 White Motor Corp
FR2156324A2 (fr) * 1969-12-18 1973-05-25 Massey Ferguson Sa
FR2202250A1 (fr) * 1972-10-10 1974-05-03 Massey Ferguson Services Nv

Also Published As

Publication number Publication date
GB2036929B (en) 1983-05-05
IT1164011B (it) 1987-04-08
MX149167A (es) 1983-09-13
FR2441076B1 (fr) 1984-06-22
GB2036929A (en) 1980-07-02
IT7950773A0 (it) 1979-11-07
ES485839A1 (es) 1980-07-01
DE2944672A1 (de) 1980-05-14
US4249558A (en) 1981-02-10
CA1143628A (fr) 1983-03-29

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Legal Events

Date Code Title Description
ST Notification of lapse