EP1210517B1 - Ventil zum steuern von flüssigkeiten - Google Patents

Ventil zum steuern von flüssigkeiten Download PDF

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Publication number
EP1210517B1
EP1210517B1 EP00960336A EP00960336A EP1210517B1 EP 1210517 B1 EP1210517 B1 EP 1210517B1 EP 00960336 A EP00960336 A EP 00960336A EP 00960336 A EP00960336 A EP 00960336A EP 1210517 B1 EP1210517 B1 EP 1210517B1
Authority
EP
European Patent Office
Prior art keywords
valve
piezoelectric actuator
compensation element
piezoactuator
controlling fluids
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 - Lifetime
Application number
EP00960336A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1210517A1 (de
Inventor
Friedrich Boecking
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch 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
Priority claimed from DE10002720A external-priority patent/DE10002720A1/de
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP1210517A1 publication Critical patent/EP1210517A1/de
Application granted granted Critical
Publication of EP1210517B1 publication Critical patent/EP1210517B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
    • F02M63/0012—Valves
    • F02M63/0014—Valves characterised by the valve actuating means
    • F02M63/0015—Valves characterised by the valve actuating means electrical, e.g. using solenoid
    • F02M63/0026—Valves characterised by the valve actuating means electrical, e.g. using solenoid using piezoelectric or magnetostrictive actuators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M47/00—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure
    • F02M47/02—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure of accumulator-injector type, i.e. having fuel pressure of accumulator tending to open, and fuel pressure in other chamber tending to close, injection valves and having means for periodically releasing that closing pressure
    • F02M47/027—Electrically actuated valves draining the chamber to release the closing pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/70—Linkage between actuator and actuated element, e.g. between piezoelectric actuator and needle valve or pump plunger
    • F02M2200/701—Linkage between actuator and actuated element, e.g. between piezoelectric actuator and needle valve or pump plunger mechanical

Definitions

  • the invention relates to a valve for controlling Liquids according to the preamble of claim 1.
  • Such a valve is for example from the EP 0 477 400 A1.
  • the actuating piston of the Valve member in a smaller diameter part of a Stepped bore arranged displaceably, whereas an in Diameter larger piston that moves with a piezoelectric actuator is, in a larger diameter part of the Stepped bore is arranged.
  • Between the two pistons is a hydraulic space clamped such that when the larger piston is moved by the piezoelectric actuator, the Actuating piston of the valve member to one around the Gear ratio of the stepped bore diameter enlarged way is moved.
  • the valve member, the Actuating piston, the larger diameter piston and the Piezo actuator lie on a common axis behind each other.
  • the valve is the EP 0 477 400 A1 in the hydraulic chamber a defined leak intended.
  • slow changes of the valve structure as for example by temperature changes can be caused by the hydraulic fluid Leak escape and so the effects in the stroke direction compensate.
  • the viscosity of the hydraulic fluid is so Chosen that in case of rapid changes, as described by Piezoelectric actuator caused, the hydraulic fluid is not escapes through the leak and the deflection of the piezoelectric actuator is transmitted to the actuating piston.
  • This compensation is very expensive and expensive, since very low tolerances the production of the pistons are required to one defined leak in the form of an annular gap between pistons and create surrounding cylinder wall. Furthermore, must discharged hydraulic fluid back into the hydraulic Room are returned, including corresponding devices must be provided.
  • the valve according to the invention for controlling fluids having the characterizing features of claim 1
  • the compensation element is in Contrary to the state of the art in the power flow of Piezo actuator integrated to the valve member. Under a Ratio of thermal expansion coefficients of approximate or equal to 1 values between 1.0 and about 1.1 understood. Ideally, the ratio is 1.
  • valve according to the invention a clear reduced number of parts. This results in a simplified Assembly of the valve as well as a reduction of Einmeßvorêtn, since fewer parts must be calibrated. As a result, in particular the manufacturing and Installation costs for the valve can be significantly reduced.
  • piezoelectric actuator and Compensation element spatially adjacent and preferably in arranged in a common room. temperature changes then act on both parts in the same way, so that the change in length of piezoelectric actuator and Compensate compensating element.
  • the compensation element consists of Invar.
  • Transmission element and translator provided an air gap.
  • the air gap measures only a few microns. Ways piezoelectric actuator and Compensation element not exactly the same Thermal expansion coefficient, can in this way Residual error compensation can be achieved.
  • the transmission element comprises a Pull rod and the compensation element is part of the pull rod.
  • the transmission element is very simple produce and there are very little difficulty due to manufacturing tolerances.
  • a robust design of the valve is achieved when the Translator as mechanical translator, preferably as Lever is executed.
  • FIG. 1 shows a valve for controlling fluids according to FIG a first embodiment of the invention.
  • the valve comprises a housing 1, in which a piezoelectric actuator 2 is arranged is. At the free end of the piezoelectric actuator 2 closes Transmission element 3, which is parallel to the axis 4 of the Piezoactors 2 extending tie rod 5 contains. Of the Piezoelectric actuator is biased by a plate spring 6. In the Tie rod 8 is a compensation element 7 integrated, the off Invar® is made. The compensating element 7 is here by means of a threaded connection with the pull rod 5 connected. Other types of connection, for example by Gluing, however, can be used as well.
  • Compensating element 7 and piezoelectric actuator 2 are approximately equal long and spatially close together in one arranged in common room.
  • the pull rod 5 is in a leg 8 on which the support with the Support axle 9 for the lever 10 forms.
  • Figure 1 is aligned the support axis 9 not with the axis 4 of the piezoelectric actuator.
  • Valve according to the invention for controlling liquids Support axis 9 also with the axis 4 of the piezoelectric actuator. 2 aligned.
  • Lever 10 is mounted on the bearing 12, which divides the lever 10 into a shorter lever arm of length B and a longer lever arm of length A. By the ratio A / B, the gear ratio is determined.
  • the lever 10 is biased by acting in the opening direction of the valve member 13 on the longer lever spring 14 compression spring.
  • the longer lever arm with the length A acts on the piston 15 of the valve member 13. In the rest position, the piston 15 is pressed by the compression spring 16, which has a larger spring constant than the compression spring 14, against the valve seat 17.
  • valve of the invention is as simple switching exhaust or inlet valve shown. However, it is also a version as a double-switching valve possible. Such an embodiment is shown in FIG.
  • the Valve differs from that shown in Figure 1 Valve only in the valve member. In Figure 2 is therefore only this Section shown.
  • Piston 15 can be at an upper Seat 18 and get to a lower seat 19 to the plant.
  • the inlet to the valve via supply line 20, which in valve shown from below to the valve body while the drain line 21 opposite to the feed line 20 above the upper Valve seat is arranged.
  • Compensation element 7 is provided. It is for example off Invar® and has a similar Thermal expansion coefficients as the piezoelectric actuator 2. Bei same temperature change, it shows therefore comparable Changes in length. Since piezoelectric actuator 2 and compensation element 7 in spatial proximity in the same room are subject they both have the same temperature influences. This shows both Parts approximately the same length changes. low Differences in the thermal expansion coefficients, the one To generate residual errors are through the air gap 11 collected. This can be increased within certain limits or be reduced without the function of the valve influence.
  • the dimensioning of the air gap 11 is so chosen that both in the cold state as well as at higher Temperatures no tension or too large tolerances in the transmission of the stroke of the piezoelectric actuator 2 to the piston 15th occur.
  • the piezoelectric actuator 2 expands with increasing Temperature stronger than the compensation element 7, must in Condition at room temperature a slightly larger air gap 11 be provided, the smaller with increasing temperature becomes. If, on the other hand, the compensating element 7 stretches with it rising temperature stronger than the piezoelectric actuator 2, must in the state at room temperature, a very small air gap 11 be provided, which increases with increasing temperature becomes.
  • FIG. 3 shows a second embodiment a valve 50 according to the invention.
  • the valve 50 includes a housing in which a Piezoactuator 53 is arranged.
  • the hub of the piezoelectric actuator 53 is not directly on the piston 56th but, as in the first embodiment According to Figure 1, a transmission element 52 with the Piezo actuator 53 connected.
  • the transmission element 52 connected to a compensating element 51, wherein the Compensation element 51 is arranged parallel to the piezoelectric actuator 53 is.
  • the compensation element 51 engages in one Lever 54, which in turn connected to the piston 56 is.
  • FIG. 5 a third Embodiment of a valve 60 according to the invention shown.
  • This valve 60 according to FIG. 5 differs from the valve 50 according to Figure 3 in that the Compensation element 61 by a biasing element in the form of a Seal spring 62 is biased.
  • valve 60 according to Figure 4 in Difference to valve 50 according to Figure 3, a guide 65th provided, which is in the axis of the compensating element 61 together with piston 66 up to the control valve with first seat 67 and second seat 68 extends.
  • valve according to the invention simple or can be constructed double-switching. Also are the Solutions according to the invention in a 2/3-control valve applicable. Furthermore, the execution examples according to the figures 1 and 2 in common, that the respective Piezo actuator by a biasing spring with lower Stiffness and high preload force is biased.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Electrically Driven Valve-Operating Means (AREA)
  • Temperature-Responsive Valves (AREA)
EP00960336A 1999-08-20 2000-08-01 Ventil zum steuern von flüssigkeiten Expired - Lifetime EP1210517B1 (de)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE19939488 1999-08-20
DE19939488 1999-08-20
DE10002720 2000-01-22
DE10002720A DE10002720A1 (de) 1999-08-20 2000-01-22 Ventil zum Steuern von Flüssigkeiten
PCT/DE2000/002534 WO2001014731A1 (de) 1999-08-20 2000-08-01 Ventil zum steuern von flüssigkeiten

Publications (2)

Publication Number Publication Date
EP1210517A1 EP1210517A1 (de) 2002-06-05
EP1210517B1 true EP1210517B1 (de) 2005-04-06

Family

ID=26003977

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00960336A Expired - Lifetime EP1210517B1 (de) 1999-08-20 2000-08-01 Ventil zum steuern von flüssigkeiten

Country Status (6)

Country Link
US (1) US6776390B1 (cs)
EP (1) EP1210517B1 (cs)
JP (1) JP2003507679A (cs)
AT (1) ATE292754T1 (cs)
CZ (1) CZ2002569A3 (cs)
WO (1) WO2001014731A1 (cs)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19946841A1 (de) * 1999-09-30 2001-05-03 Bosch Gmbh Robert Ventil zum Steuern von Flüssigkeiten
DE20220800U1 (de) * 2002-10-24 2004-04-08 Vermes Technik Gmbh & Co. Kg Piezoelektrisches Aktorsystem
JP4499984B2 (ja) * 2002-11-08 2010-07-14 株式会社堀場エステック 高温対応バルブ
DE10304240A1 (de) * 2003-02-03 2004-10-28 Volkswagen Mechatronic Gmbh & Co. Kg Vorrichtung zum Übertragen einer Auslenkung eines Aktors
DE10308613A1 (de) * 2003-02-27 2004-09-16 Siemens Ag Ventil mit einem Hebel, Hebel und Verfahren zur Herstellung eines Hebels
JP4344164B2 (ja) * 2003-04-18 2009-10-14 株式会社サタケ 圧電式エアバルブおよび複合圧電式エアバルブ
ATE538504T1 (de) * 2003-11-20 2012-01-15 Viking Technologies Lc Integrale thermische kompensation für einen elektromechanischen aktuator
US7444209B2 (en) * 2006-10-26 2008-10-28 Honeywell International Inc. Miniature cooling device
JP4933936B2 (ja) 2007-03-30 2012-05-16 株式会社フジキン 圧電素子駆動式制御弁
JP5024322B2 (ja) * 2009-03-25 2012-09-12 株式会社デンソー 燃料噴射弁
DE202009007298U1 (de) * 2009-05-20 2009-09-17 Bürkert Werke GmbH & Co. KG Antriebseinrichtung mit einem Piezostapelaktor
DE102010051742A1 (de) 2010-11-19 2012-05-24 Christoph Miethke Hebelventil mit Piezo-Aktor-Antrieb
DE102011090196A1 (de) 2011-12-30 2013-07-04 Continental Automotive Gmbh Hebelvorrichtung und Einspritzventil
DE102011090200A1 (de) * 2011-12-30 2013-07-04 Continental Automotive Gmbh Hebelvorrichtung und Einspritzventil
DE102013220528B4 (de) * 2013-10-11 2015-05-07 Continental Automotive Gmbh Einspritzventil und Verfahren zum Betreiben eines Einspritzventils
DE102015212378B4 (de) * 2015-07-02 2021-08-05 Vitesco Technologies GmbH Verfahren und Vorrichtung zur Ansteuerung eines Piezoaktors eines Einspritzventils eines Kraftstoffeinspritzsystems einer Brennkraftmaschine
US11781669B1 (en) * 2022-05-12 2023-10-10 Tangtring Seating Technology Inc. Air valve
DE102023122622A1 (de) * 2023-08-23 2025-02-27 Syntegon Technology Gmbh Piezoaktor und Vorrichtung zur Dosierung eines pulverförmigen Produktes

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1601306A (en) * 1978-05-08 1981-10-28 Philips Electronic Associated Fluidcontrol valve
WO1981001567A1 (en) 1979-11-30 1981-06-11 Nat Res Dev Vinylidene fluoride polymers
US4550744A (en) * 1982-11-16 1985-11-05 Nippon Soken, Inc. Piezoelectric hydraulic control valve
DE19538791C2 (de) * 1995-10-18 1998-04-09 Daimler Benz Ag Piezosteuerventil für Kraftstoffeinspritzanlagen von Brennkraftmaschinen
DE19601749B4 (de) * 1996-01-19 2005-09-08 Hydraulik-Ring Antriebs- Und Steuerungstechnik Gmbh Pumpe, vorzugsweise für Fahrzeuge, insbesondere für Kraftfahrzeuge
DE59811027D1 (de) * 1997-04-04 2004-04-29 Siemens Ag Einspritzventil mit Mitteln zur Kompensation der thermischen Längenänderung eines Piezoaktors
DE19849203A1 (de) * 1998-10-26 2000-04-27 Bosch Gmbh Robert Brennstoffeinspritzventil
DE19909106C2 (de) * 1999-03-02 2001-08-23 Siemens Ag Temperaturkompensierte piezoelektrische Aktoreinheit
DE19946841A1 (de) * 1999-09-30 2001-05-03 Bosch Gmbh Robert Ventil zum Steuern von Flüssigkeiten

Also Published As

Publication number Publication date
WO2001014731A1 (de) 2001-03-01
JP2003507679A (ja) 2003-02-25
CZ2002569A3 (cs) 2003-06-18
US6776390B1 (en) 2004-08-17
EP1210517A1 (de) 2002-06-05
ATE292754T1 (de) 2005-04-15

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