EP1210517B1 - Ventil zum steuern von flüssigkeiten - Google Patents
Ventil zum steuern von flüssigkeiten Download PDFInfo
- 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
Links
- 239000007788 liquid Substances 0.000 title description 3
- 239000012530 fluid Substances 0.000 claims abstract description 15
- 230000005540 biological transmission Effects 0.000 claims description 14
- 229910001374 Invar Inorganic materials 0.000 claims description 4
- 230000001131 transforming effect Effects 0.000 claims 2
- 239000000919 ceramic Substances 0.000 claims 1
- 230000009347 mechanical transmission Effects 0.000 claims 1
- 239000000446 fuel Substances 0.000 abstract description 4
- 238000002347 injection Methods 0.000 abstract description 4
- 239000007924 injection Substances 0.000 abstract description 4
- 239000000463 material Substances 0.000 abstract description 4
- 238000002485 combustion reaction Methods 0.000 abstract 1
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000036316 preload Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Images
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)
Description
Der längere Hebelarm mit der Länge A wirkt auf den Kolben 15 des Ventilglieds 13. In der Ruhelage wird der Kolben 15 durch die Druckfeder 16, die eine größere Federkonstante besitzt als die Druckfeder 14, gegen den Ventilsitz 17 gepreßt.
Claims (8)
- Ventil zum Steuern von Flüssigkeiten, mit einem Piezoaktor (2), dessen Hub mittels eines Übertragungeelements (3) auf ein Ventilglied (13) übertragen wird, wobei im Abstand zum Piezoaktor (2) ein Ausgleichselement (7) vorgesehen ist, welches Temperaturschwankungen es Piezoaktors (2) ausgleicht, und wobei das Verhältnis des wärmeausdehnungskoeffizienten des Piezoaktors (2) und des Wärmeauedehaungskoeffizienten des Ausgleichselements (7) annähernd oder gleich eins ist, dadurch gekennzeichnet, dass das Ausgleichselement (7; 51) stangenförmig ausgebildet und parallel und beabstandet zum Piezoaktor (2; 53) angeordnet ist.
- Ventil zum Steuern von Flüssigkeiten nach Anspruch 1, dadurch gekennzeichnet, dass der Piezoaktor (2) und das Ausgleichselement (7) räumlich benachbart, vorzugsweise in einem gemeinsamen Raum angeordnet sind.
- Ventil zum Steuern von Flüssigkeiten nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die wirksame Länge des Ausgleichselements (7) der Länge des Piezoaktors (2) entspricht.
- Ventil zum Steuern von Flüssigkeiten nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass das Ausgleichselement (7) aus Invar® oder Keramik besteht.
- Ventil zum Steuern von Flüssigkeiten nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass zwischen dem Übertragungselement (3) und einem übersetzer (10) ein Luftspalt (11) vorgesehen ist.
- Ventil zum Steuern von Flüssigkeiten nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass das übertragungselement (3) eine Zugstange (5) umfaßt und das Ausgleichselement (7) Teil der Zugstange (5) ist.
- Ventil zum Steuern von Flüssigkeiten nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass das übertragungselement (3) den Hub auf einen Übersetzer (10) überträgt, wobei der Übersetzer als mechanischer Übersetzer, vorzugsweise als Hebel ausgeführt ist.
- Ventil zum Steuern von Flüssigkeiten nach Anspruch 7, dadurch gekennzeichnet, dass ein Auflager des Hebels (10) in der Achse (9) des Piezoaktors liegt.
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19939488 | 1999-08-20 | ||
DE19939488 | 1999-08-20 | ||
DE10002720A DE10002720A1 (de) | 1999-08-20 | 2000-01-22 | Ventil zum Steuern von Flüssigkeiten |
DE10002720 | 2000-01-22 | ||
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 (de) |
EP (1) | EP1210517B1 (de) |
JP (1) | JP2003507679A (de) |
AT (1) | ATE292754T1 (de) |
CZ (1) | CZ2002569A3 (de) |
WO (1) | WO2001014731A1 (de) |
Families Citing this family (18)
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 |
WO2005053045A2 (en) * | 2003-11-20 | 2005-06-09 | Viking Technologies, L.C. | Integral thermal compensation for an electro-mechanical actuator |
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1601306A (en) * | 1978-05-08 | 1981-10-28 | Philips Electronic Associated | Fluidcontrol valve |
US4390674A (en) | 1979-11-30 | 1983-06-28 | National Research Development Corporation | Uniaxially drawn 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 |
EP0869278B1 (de) * | 1997-04-04 | 2004-03-24 | Siemens Aktiengesellschaft | 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 |
-
2000
- 2000-08-01 US US10/049,945 patent/US6776390B1/en not_active Expired - Fee Related
- 2000-08-01 CZ CZ2002569A patent/CZ2002569A3/cs unknown
- 2000-08-01 WO PCT/DE2000/002534 patent/WO2001014731A1/de not_active Application Discontinuation
- 2000-08-01 EP EP00960336A patent/EP1210517B1/de not_active Expired - Lifetime
- 2000-08-01 JP JP2001518579A patent/JP2003507679A/ja active Pending
- 2000-08-01 AT AT00960336T patent/ATE292754T1/de not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
US6776390B1 (en) | 2004-08-17 |
WO2001014731A1 (de) | 2001-03-01 |
CZ2002569A3 (cs) | 2003-06-18 |
ATE292754T1 (de) | 2005-04-15 |
EP1210517A1 (de) | 2002-06-05 |
JP2003507679A (ja) | 2003-02-25 |
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