WO2010085991A3 - Soupape de régulation de pression proportionnelle - Google Patents

Soupape de régulation de pression proportionnelle Download PDF

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Publication number
WO2010085991A3
WO2010085991A3 PCT/EP2009/007882 EP2009007882W WO2010085991A3 WO 2010085991 A3 WO2010085991 A3 WO 2010085991A3 EP 2009007882 W EP2009007882 W EP 2009007882W WO 2010085991 A3 WO2010085991 A3 WO 2010085991A3
Authority
WO
WIPO (PCT)
Prior art keywords
connection
pressure control
valve
proportional pressure
control valve
Prior art date
Application number
PCT/EP2009/007882
Other languages
German (de)
English (en)
Other versions
WO2010085991A2 (fr
Inventor
Markus Bill
Peter Bruck
Gerd Schneider
Original Assignee
Hydac Fluidtechnik Gmbh
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 Hydac Fluidtechnik Gmbh filed Critical Hydac Fluidtechnik Gmbh
Priority to KR1020117019832A priority Critical patent/KR101662586B1/ko
Priority to CN200980155552.7A priority patent/CN102301300B/zh
Priority to US13/138,281 priority patent/US8662109B2/en
Priority to JP2011546602A priority patent/JP5524980B2/ja
Priority to EP20090749014 priority patent/EP2382520B1/fr
Publication of WO2010085991A2 publication Critical patent/WO2010085991A2/fr
Publication of WO2010085991A3 publication Critical patent/WO2010085991A3/fr

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16DCOUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D48/00External control of clutches
    • F16D48/02Control by fluid pressure
    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05DSYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D16/00Control of fluid pressure
    • G05D16/20Control of fluid pressure characterised by the use of electric means
    • G05D16/2093Control of fluid pressure characterised by the use of electric means with combination of electric and non-electric auxiliary power
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B13/00Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F15B13/04Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
    • F15B13/0401Valve members; Fluid interconnections therefor
    • F15B13/0402Valve members; Fluid interconnections therefor for linearly sliding valves, e.g. spool valves
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B13/00Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F15B13/04Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
    • F15B13/042Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by fluid pressure
    • F15B13/043Fluid 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
    • F15B13/0433Fluid 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 pressure control valves
    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05DSYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D16/00Control of fluid pressure
    • G05D16/20Control of fluid pressure characterised by the use of electric means
    • G05D16/2006Control of fluid pressure characterised by the use of electric means with direct action of electric energy on controlling means
    • G05D16/2013Control of fluid pressure characterised by the use of electric means with direct action of electric energy on controlling means using throttling means as controlling means
    • G05D16/2024Control of fluid pressure characterised by the use of electric means with direct action of electric energy on controlling means using throttling means as controlling means the throttling means being a multiple-way valve
    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05DSYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D16/00Control of fluid pressure
    • G05D16/20Control of fluid pressure characterised by the use of electric means
    • G05D16/2093Control of fluid pressure characterised by the use of electric means with combination of electric and non-electric auxiliary power
    • G05D16/2097Control of fluid pressure characterised by the use of electric means with combination of electric and non-electric auxiliary power using pistons within the main valve
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16DCOUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D48/00External control of clutches
    • F16D48/02Control by fluid pressure
    • F16D2048/0209Control by fluid pressure characterised by fluid valves having control pistons, e.g. spools
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16DCOUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2500/00External control of clutches by electric or electronic means
    • F16D2500/50Problem to be solved by the control system
    • F16D2500/501Relating the actuator
    • F16D2500/5014Filling the actuator cylinder with fluid
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16DCOUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2500/00External control of clutches by electric or electronic means
    • F16D2500/70Details about the implementation of the control system
    • F16D2500/704Output parameters from the control unit; Target parameters to be controlled
    • F16D2500/70402Actuator parameters
    • F16D2500/70418Current
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00Fluid handling
    • Y10T137/8593Systems
    • Y10T137/86493Multi-way valve unit
    • Y10T137/86574Supply and exhaust
    • Y10T137/86582Pilot-actuated
    • Y10T137/86614Electric
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00Fluid handling
    • Y10T137/8593Systems
    • Y10T137/86493Multi-way valve unit
    • Y10T137/86574Supply and exhaust
    • Y10T137/8667Reciprocating valve
    • Y10T137/86694Piston valve
    • Y10T137/86702With internal flow passage

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Fluid Mechanics (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Fluid-Driven Valves (AREA)
  • Magnetically Actuated Valves (AREA)
  • Safety Valves (AREA)
  • Control Of Fluid Pressure (AREA)

Abstract

L'invention concerne une soupape de régulation de pression proportionnelle comportant un carter de soupape (10) comprenant au moins trois raccords de guidage de fluide, en particulier sous forme de raccord de pompe (P), de raccord d'utilisation (A) et de raccord de réservoir (T). Un piston de régulation (18) est mobile longitudinalement dans le carter de soupape (10), afin de raccorder de manière sélective le raccord de pompe (P) au raccord d'utilisation (A), et ledit raccord d'utilisation (A) au raccord de réservoir (T). Un système de communication fluidique est prévu entre le raccord de pompe (P) et une chambre de pilotage (20) d'une soupape de pilotage (22). La soupape de pilotage (20) peut être commandée par un système magnétique (28), en particulier un système magnétique proportionnel. L'invention est caractérisée en ce que le système de communication fluidique menant à la chambre de pilotage (20) présente un trou (27) s'étendant dans la direction axiale, dans la paroi du carter de soupape (10), le trou partant d'un orifice radial (9) du carter (10) et formant le raccord de pompe.
PCT/EP2009/007882 2009-01-28 2009-11-04 Soupape de régulation de pression proportionnelle WO2010085991A2 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
KR1020117019832A KR101662586B1 (ko) 2009-01-28 2009-11-04 비례 압력 제어 밸브
CN200980155552.7A CN102301300B (zh) 2009-01-28 2009-11-04 比例压力调节阀
US13/138,281 US8662109B2 (en) 2009-01-28 2009-11-04 Proportional pressure control valve
JP2011546602A JP5524980B2 (ja) 2009-01-28 2009-11-04 比例圧力制御弁
EP20090749014 EP2382520B1 (fr) 2009-01-28 2009-11-04 Soupape de régulation de pression proportionnelle et son utilisation pour connection hydraulique

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200910006445 DE102009006445B3 (de) 2009-01-28 2009-01-28 Proportional-Druckregelventil
DE102009006445.1 2009-01-28

Publications (2)

Publication Number Publication Date
WO2010085991A2 WO2010085991A2 (fr) 2010-08-05
WO2010085991A3 true WO2010085991A3 (fr) 2011-06-16

Family

ID=42243794

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2009/007882 WO2010085991A2 (fr) 2009-01-28 2009-11-04 Soupape de régulation de pression proportionnelle

Country Status (7)

Country Link
US (1) US8662109B2 (fr)
EP (1) EP2382520B1 (fr)
JP (1) JP5524980B2 (fr)
KR (1) KR101662586B1 (fr)
CN (1) CN102301300B (fr)
DE (1) DE102009006445B3 (fr)
WO (1) WO2010085991A2 (fr)

Families Citing this family (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102537475A (zh) * 2010-12-10 2012-07-04 贵州红林机械有限公司 一种改进后的常开式比例压力电磁阀
DE102011084059B4 (de) * 2011-10-05 2016-12-08 Schwäbische Hüttenwerke Automotive GmbH Steuerventil mit integriertem Filter und Nockenwellen-Phasensteller mit dem Steuerventil
DE102012002189B3 (de) * 2012-02-07 2013-05-16 Hydac Fluidtechnik Gmbh Ventil
DE102012006681A1 (de) * 2012-03-30 2013-10-02 Hydac Fluidtechnik Gmbh Ventil, insbesondere vorgesteuertes Proportional-Druckregelventil
KR101231890B1 (ko) * 2012-08-10 2013-02-08 서호덕 극 미소 누설 측정이 가능한 이동식 실린더 시험장치
US9322416B2 (en) * 2013-03-11 2016-04-26 Hydraforce, Inc. Multi-functional proportional control valve for hydraulic suspension system for vehicle
EP2989342B1 (fr) * 2013-04-22 2021-06-02 Dana Belgium N.V. Système et procédé pour la mise à jour de paramètres de remplissage dans des embrayages humides par apprentissage croisé
DE102013008840A1 (de) 2013-05-24 2014-11-27 Hydac Fluidtechnik Gmbh Proportional-Druckregelventil
DE102013014558A1 (de) * 2013-08-31 2015-03-05 Hydac Fluidtechnik Gmbh Ventil nebst seiner Verwendung für eine Kupplung
JP6372998B2 (ja) * 2013-12-05 2018-08-15 株式会社フジキン 圧力式流量制御装置
CN104806787A (zh) * 2014-01-27 2015-07-29 卡特彼勒公司 阀组件以及包括该阀组件的液压系统和作业机器
DE102014219634A1 (de) * 2014-09-29 2016-03-31 Robert Bosch Gmbh Druckreduzierventil mit gesonderten Radialbohrungen für unterschiedliche Fluidströmungspfade
DE102014015704A1 (de) * 2014-10-22 2016-04-28 Hydac Fluidtechnik Gmbh Vorgesteuertes Wegeventil
WO2016113519A1 (fr) * 2015-01-15 2016-07-21 Axon Energy Products Uk Ltd Soupape montée sur embase
DE102015101032A1 (de) * 2015-01-26 2016-07-28 Amazonen-Werke H. Dreyer Gmbh & Co. Kg Landwirtschaftliche Maschine und Regelungsverfahren
DE102015003554A1 (de) 2015-03-19 2016-09-22 Hydac Fluidtechnik Gmbh Ventil
KR101703825B1 (ko) 2015-07-20 2017-02-07 울산대학교 산학협력단 전자 비례 감압 밸브
WO2017010694A1 (fr) * 2015-07-16 2017-01-19 울산대학교 산학협력단 Vanne de réduction de pression proportionnelle électronique
KR101703824B1 (ko) 2015-07-16 2017-02-07 울산대학교 산학협력단 전자 비례 감압 밸브
US10268215B2 (en) * 2016-01-12 2019-04-23 Tescom Corporation Fluid regulators and associated actuators
DE102016101632A1 (de) * 2016-01-29 2017-08-03 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Fluidisches Kupplungsbetätigungssystem
DE102017203286A1 (de) * 2017-03-01 2018-09-06 Robert Bosch Gmbh Druckregelventil mit Druckübersetzungsstift
DE102018202722A1 (de) * 2018-02-22 2019-08-22 Continental Automotive Gmbh Ventil für ein Airbagsystem für ein Kraftfahrzeug und Airbagsystem für ein Kraftfahrzeug
FR3084922B1 (fr) * 2018-08-10 2020-11-20 Bontaz Centre R & D Electrovanne on/off offrant 2 niveaux de regulation mecanique de la pression
RU2692589C1 (ru) * 2019-01-09 2019-06-25 ООО "Павловский завод гидроаппаратуры" Пропорциональный картриджный клапан с пилотным электроуправлением
DE102019101133A1 (de) * 2019-01-17 2020-07-23 Gkn Automotive Limited Ventilanordnung mit zumindest einem wegeventil sowie kupplungseinrichtung mit einer solchen ventilanordnung
DE102019202256A1 (de) * 2019-02-19 2020-08-20 Volkswagen Aktiengesellschaft Ventileinheit zur hydraulischen Aktuierung einer Kupplung
US20210261401A1 (en) * 2020-02-24 2021-08-26 Healixir Health, LLC Automated oil diffuser
DE102022100558A1 (de) 2022-01-11 2023-07-13 Rapa Automotive Gmbh & Co. Kg Pilotstufe mit kugel-kegelsitz

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6286535B1 (en) * 1991-08-19 2001-09-11 Parker-Hannifin Corporation Proportional pressure control valve
DE10025772A1 (de) * 2000-05-26 2001-11-29 Herion Systemtechnik Gmbh Proportional-Druckbegrenzungsventil mit Notfunktion
DE10325178A1 (de) * 2003-06-04 2005-01-05 Hydac Fluidtechnik Gmbh Proportional-Druckregelventil
WO2007065566A1 (fr) * 2005-12-09 2007-06-14 Thomas Magnete Gmbh Systeme modulaire de soupape qui comprend une soupape a actionnement electromagnetique

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3038802A1 (de) * 1980-10-14 1982-05-27 Herion-Werke Kg, 7012 Fellbach Impulsventil
DE3150252A1 (de) * 1981-12-18 1983-06-30 Vereinigte Flugtechnische Werke Gmbh, 2800 Bremen Schaltventil fuer hydraulische stellglieder
DE3306588A1 (de) * 1983-02-25 1984-08-30 H. Kuhnke Gmbh Kg, 2427 Malente Elektrisch-fluidisch betaetigbares geraet, insbesondere ventil
US4570904A (en) * 1984-07-11 1986-02-18 Sealed Power Corporation Solenoid valve
US4576200A (en) * 1985-03-26 1986-03-18 Applied Power Inc. Hydraulic pressure reducing control valve
JPH067364Y2 (ja) * 1986-07-04 1994-02-23 日産自動車株式会社 圧力制御弁
US5042832A (en) * 1988-01-29 1991-08-27 Nissan Motor Company, Limited Proportioning valve assembly and actively controlled suspension system utilizing the same
JPH0615287Y2 (ja) * 1988-01-29 1994-04-20 日産自動車株式会社 能動型サスペンション用圧力制御弁
US5236015A (en) * 1989-12-13 1993-08-17 Hydrolux S.A.R.L. Position-controlled proportional directional valve
DE19856563A1 (de) * 1998-12-08 2000-06-15 Mannesmann Rexroth Ag Wegeventil
JP2001208234A (ja) * 2000-01-26 2001-08-03 Denso Corp 電磁弁
DE10032517A1 (de) * 2000-07-05 2002-01-24 Bosch Gmbh Robert Injektor mit Steuerteilführung
CN1472461A (zh) * 2003-06-24 2004-02-04 浙江大学 电液比例三通减压阀
JP4275135B2 (ja) * 2003-08-27 2009-06-10 株式会社コガネイ 方向制御弁
CN1295441C (zh) * 2004-11-05 2007-01-17 宁波华液机器制造有限公司 一种比例压差控制阀
CN100570185C (zh) * 2007-12-30 2009-12-16 瑞立集团有限公司 阀芯运动连续可调的电磁阀

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6286535B1 (en) * 1991-08-19 2001-09-11 Parker-Hannifin Corporation Proportional pressure control valve
DE10025772A1 (de) * 2000-05-26 2001-11-29 Herion Systemtechnik Gmbh Proportional-Druckbegrenzungsventil mit Notfunktion
DE10325178A1 (de) * 2003-06-04 2005-01-05 Hydac Fluidtechnik Gmbh Proportional-Druckregelventil
WO2007065566A1 (fr) * 2005-12-09 2007-06-14 Thomas Magnete Gmbh Systeme modulaire de soupape qui comprend une soupape a actionnement electromagnetique

Also Published As

Publication number Publication date
US20110297856A1 (en) 2011-12-08
JP2012516481A (ja) 2012-07-19
KR20110124254A (ko) 2011-11-16
EP2382520B1 (fr) 2014-02-26
WO2010085991A2 (fr) 2010-08-05
EP2382520A2 (fr) 2011-11-02
JP5524980B2 (ja) 2014-06-18
DE102009006445B3 (de) 2010-07-15
CN102301300B (zh) 2014-10-22
US8662109B2 (en) 2014-03-04
KR101662586B1 (ko) 2016-10-05
CN102301300A (zh) 2011-12-28

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