EP1135595A1 - Ventil zum steuern von flüssigkeiten - Google Patents
Ventil zum steuern von flüssigkeitenInfo
- Publication number
- EP1135595A1 EP1135595A1 EP00975772A EP00975772A EP1135595A1 EP 1135595 A1 EP1135595 A1 EP 1135595A1 EP 00975772 A EP00975772 A EP 00975772A EP 00975772 A EP00975772 A EP 00975772A EP 1135595 A1 EP1135595 A1 EP 1135595A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- valve
- piezoelectric unit
- valve member
- valve according
- tolerance compensation
- 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
Links
- 239000007788 liquid Substances 0.000 title claims description 7
- 239000000446 fuel Substances 0.000 claims description 18
- 238000002347 injection Methods 0.000 claims description 15
- 239000007924 injection Substances 0.000 claims description 15
- 238000007789 sealing Methods 0.000 claims description 10
- 238000002485 combustion reaction Methods 0.000 claims description 9
- 239000012530 fluid Substances 0.000 abstract 1
- 238000010276 construction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 229920002545 silicone oil Polymers 0.000 description 1
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
- F02M2200/703—Linkage between actuator and actuated element, e.g. between piezoelectric actuator and needle valve or pump plunger hydraulic
Definitions
- the invention is based on a valve for controlling liquids according to the preamble of claim 1.
- a valve which can be actuated via a piezoelectric actuator, is already known from EP 0 477 400 A1.
- This known valve has an arrangement for an adaptive, mechanical tolerance compensation acting in the stroke direction for a displacement transformer of the piezoelectric actuator, in which the deflection of the piezoelectric actuator is transmitted via a hydraulic chamber.
- the hydraulic chamber which works as a so-called hydraulic ratio, closes between two pistons delimiting it, of which one piston is designed with a smaller diameter and is connected to a valve element to be actuated and the other piston is designed with a larger diameter and with which Piezoelectric actuator is connected, a common compensation volume.
- the hydraulic chamber is clamped between the two pistons in such a way that the actuating piston of the valve member, which is held in its rest position by means of one or more springs relative to a predetermined position, makes a stroke increased by the ratio of the piston diameter when the larger piston is moved by the piezoelectric Actuator is moved by a certain distance.
- the valve member, the pistons and the piezoelectric actuator lie one behind the other on a common axis.
- Tolerances due to temperature gradients in the component or different thermal expansion coefficients of the materials used, as well as possible setting effects, can be compensated for via the compensation volume of the hydraulic chamber, without a change in the position of the valve element to be controlled occurring.
- the invention has for its object to provide a valve for controlling liquids with a piezoelectric unit, in which in particular a tolerance compensation element for compensating elongation tolerances of the piezoelectric unit and / or further valve components is realized with a small space requirement with a simple construction.
- the valve according to the invention for controlling liquids with the characterizing features of claim 1 has the advantage that it works with a high natural frequency, since a direct power transmission via the deflection element without a translation with which the natural frequency decreases quadratically is provided.
- valve with the inventive arrangement of the piezoelectric unit, deflection element and tolerance compensation element has a compact structure.
- the tolerance compensation element for elongation tolerances, in particular caused by temperature changes, is realized inexpensively according to the invention with simple mechanical means.
- valve according to the invention for controlling liquids is shown in the drawing. represents and is explained in more detail in the following description.
- the single figure of the drawing shows a schematic, partial representation of an embodiment of the invention in a fuel injection valve for internal combustion engines in longitudinal section.
- the embodiment shown in the figure shows a preferred use of the valve according to the invention in a fuel injection valve 1 for internal combustion engines of motor vehicles.
- fuel injection valve 1 is designed as a common rail injector for injecting diesel fuel.
- a valve member 2 is actuated via a piezoelectric unit 3 with a piezoelectric actuator 4, which is arranged in a piezo chamber 5 on a side of the valve member 2 facing away from the combustion chamber a valve body or valve housing 6 is formed.
- the piston-shaped valve member 2 is arranged axially displaceably in a bore 7 of the valve body 6 designed as a longitudinal bore and has at its end on the combustion chamber side a valve head 8 forming a valve closing member.
- the valve member 2 is in the present case a 2/2 valve
- the valve head 8 cooperates with a first seat 9 and a second seat 10 formed on the valve body 6. In this case, when the valve head 8 is lifted off, a connection is made to a spring chamber 11 with a spring device 12 which exerts a restoring force on the valve head 8 which opens outwards.
- valve member works as a 2/3 valve with a central position.
- An outlet throttle 13 connects to the spring chamber 11 on the combustion chamber side, which leads to a valve control chamber 14, into which an injection line 15, which is only symbolically indicated in the figure, opens, which in turn leads away from a high-pressure storage chamber (common rail) 16 common to all fuel injection valves ,
- the high-pressure storage space 16 is filled in a known manner by a high-pressure fuel delivery pump with high-pressure fuel from a storage tank.
- the piezoelectric actuator 4 for actuating the valve member 2 is made up of several thin layers and has a piezo head 17 on its side facing the combustion chamber and a piezo foot with an electrical contact 19 on its side facing away from the combustion chamber.
- the piezo head 17 is connected to a deflection element 20, by means of which a deflection of the piezoelectric actuator 4 can be transmitted to the valve member 2, the piezoelectric unit 3 being in the direction of movement of the Valve member 2 is arranged with its piezo head 17 facing it within a longitudinal extension of the deflecting element 20.
- the deflecting element 20 represents a substantially closed deflecting sleeve that delimits an interior space 21.
- the piezoelectric actuator 4 is connected to the deflection sleeve 21 via a tolerance compensation element 22 to compensate for elongation tolerances of the piezoelectric unit 3 or other valve components such as e.g. of the valve member 2 or the valve body 6 connected.
- the tolerance compensating element 22 is arranged parallel to the piezoelectric unit 3, being connected on the one hand to the piezo head 17 and on the other hand to a support 23 on the deflection sleeve 20 m, an area adjacent to the piezo foot 18
- the tolerance compensation element 22 is formed with two compensation bolts 24 which extend parallel to the piezoelectric unit 3 and which are fastened to the piezo head 17 projecting over the diameter of the piezoelectric actuator 4.
- the tolerance compensation element is designed with a different number of compensation bolts or, for example, like a sleeve.
- the tolerance compensation element 22 has a tolera.nzbe- of the same type as the piezoelectric unit 3. urgent change in length behavior without causing a movement of the deflecting element 20 acting on the position of the valve member 2.
- the tolerance compensation element 20 has approximately a length and a coefficient of thermal expansion of the piezoelectric actuator 4.
- Interior 21 of the deflecting element 20 is filled with a heat-conducting medium 32, which has a high thermal conductivity.
- the deflecting element 20 serves as a container for the heat transfer medium 32.
- a heat-conducting paste made of silicone oil is selected as the heat-conducting medium, but other media, in particular made of synthetic oil, are also suitable for this.
- the piezoelectric unit 3 is sealed off from the bore 7 receiving the valve member 2 and the fuel contained therein, for which purpose a sealing element 25 is provided, which is designed here as a sealing plate which is mounted in the valve body 6, which is made in two parts at this point.
- the sealing plate 25 has through openings 27 each provided with a sealing device 26, which is an O-ring or a membrane, for contacting the deflecting element 20 with the valve member 2.
- a sealing device 26 which is an O-ring or a membrane
- the valve member 2 or its plate 29 is separated from the deflection element 20 by an air gap 30.
- This air gap 30 is dimensioned such that movements of the deflecting element of a few micrometers can be compensated for a possible temperature compensation.
- a spring device 31 is installed in a prestressed manner, which is provided as a prestressing element for the piezoelectric actuator 4 constructed from a plurality of layers in a “multilayer” design and prevents the layers thereof from detaching from one another when energized.
- the fuel injection valve 1 operates in the manner described below.
- the compensating bolts 24 of the tolerance compensating element 22 lengthen in the same way as the piezoelectric actuator 4, so that the deflecting element 20 is not moved or experiences only a minimal deflection, which is smaller than the width of the air gap 30. In any case, this has no effect on the closed and open positions of the valve member 2 and the fuel valve 1 as a whole.
- the piezoelectric actuator 4 If an injection is to take place through the fuel injection valve 1, the piezoelectric actuator 4 is energized, as a result of which its axial expansion increases suddenly. With such a rapid actuation of the piezoelectric actuator 4, the deflection element 20 connected to the piezo head 17 is displaced equally strongly in the direction of the valve member 2, so that the deflection element 20 strikes the plate 29 of the valve member 2 and the valve member 2 lifts from its first seat 9 and brings it into an open position at its second seat 10. Fuel can thus enter the longitudinal bore 7 of the valve body 6 from the valve control chamber 14, the fuel that has entered being able to escape again through a leakage drain line 34. The opening of the valve member 2 in the force-balanced designed fuel injection valve 1 has the result that a valve control piston 33 is moved upward in the valve control chamber 14 and fuel is injected into the combustion chamber, which is not shown, through a now releasing injection nozzle.
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)
- Control Of Non-Electrical Variables (AREA)
Description
Claims
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19946841A DE19946841A1 (de) | 1999-09-30 | 1999-09-30 | Ventil zum Steuern von Flüssigkeiten |
| DE19946841 | 1999-09-30 | ||
| PCT/DE2000/003226 WO2001023745A1 (de) | 1999-09-30 | 2000-09-16 | Ventil zum steuern von flüssigkeiten |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1135595A1 true EP1135595A1 (de) | 2001-09-26 |
| EP1135595B1 EP1135595B1 (de) | 2004-12-15 |
Family
ID=7923822
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP00975772A Expired - Lifetime EP1135595B1 (de) | 1999-09-30 | 2000-09-16 | Ventil zum steuern von flüssigkeiten |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US6454239B1 (de) |
| EP (1) | EP1135595B1 (de) |
| JP (1) | JP2003510508A (de) |
| KR (1) | KR100806058B1 (de) |
| AT (1) | ATE285034T1 (de) |
| CZ (1) | CZ295448B6 (de) |
| DE (2) | DE19946841A1 (de) |
| WO (1) | WO2001023745A1 (de) |
Families Citing this family (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19939520C2 (de) * | 1999-08-20 | 2001-06-07 | Bosch Gmbh Robert | Einspritzsystem und Verfahren zum Betreiben eines Einspritzsystems |
| JP2003507679A (ja) * | 1999-08-20 | 2003-02-25 | ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング | 液体を制御するための弁 |
| DE10003863B4 (de) * | 2000-01-28 | 2004-11-18 | Robert Bosch Gmbh | Einspritzdüse |
| US20030062026A1 (en) * | 2000-09-07 | 2003-04-03 | Friedrich Boecking | Common rail system |
| DE10141136A1 (de) * | 2001-04-07 | 2002-10-10 | Continental Teves Ag & Co Ohg | Ventil.insbesondere für hydraulische Kraftfahrzeugbremsen |
| DE10122245A1 (de) * | 2001-05-08 | 2002-12-12 | Bosch Gmbh Robert | Leckagereduzierter druckgesteuerter Kraftstoffinjektor |
| DE10132249A1 (de) * | 2001-07-04 | 2003-01-23 | Bosch Gmbh Robert | Kraftstoffinjektor mit kraftausgeglichenem Steuerventil |
| DE10136186A1 (de) * | 2001-07-25 | 2003-02-06 | Bosch Gmbh Robert | Ventil zum Steuern von Flüssigkeiten |
| DE10147483B4 (de) * | 2001-09-26 | 2005-05-19 | Robert Bosch Gmbh | Ventil zum Steuern von Flüssigkeiten |
| DE10163731A1 (de) * | 2001-12-21 | 2003-07-10 | Biochip Technologies Gmbh | Piezoaktor |
| DE10213858A1 (de) * | 2002-03-27 | 2003-10-30 | Bosch Gmbh Robert | Brennstoffeinspritzventil |
| DE10233906A1 (de) | 2002-07-25 | 2004-02-19 | Siemens Ag | Einspritzmodul |
| DE10345203A1 (de) * | 2003-09-29 | 2005-05-04 | Bosch Gmbh Robert | Brennstoffeinspritzventil |
| EP1584815A1 (de) * | 2004-04-05 | 2005-10-12 | Tiby M. Martin | Einspritzventil für einen Hochdruckspeicher |
| DE602005005242T2 (de) | 2004-04-26 | 2009-04-02 | Isuzu Motors Ltd. | Längen-Ausgleichselement und dieses enthaltendes Kraftstoff-Einspritzventil |
| DE102004026171B4 (de) * | 2004-05-28 | 2010-05-20 | Continental Automotive Gmbh | Einspritzventil |
| DE102005025953A1 (de) * | 2005-06-06 | 2006-12-07 | Siemens Ag | Einspritzventil und Ausgleichselement für ein Einspritzventil |
| DE102006026381A1 (de) * | 2006-06-07 | 2007-12-13 | Robert Bosch Gmbh | Kraftstoffinjektor mit Druckübersetzer und niederdruckseitig angeordnetem Piezosteller |
| US7717132B2 (en) * | 2006-07-17 | 2010-05-18 | Ford Global Technologies, Llc | Hydraulic valve actuated by piezoelectric effect |
| US9142751B2 (en) * | 2012-10-10 | 2015-09-22 | Industrial Sonomechanics, Llc | Efficient cooling of piezoelectric transducers |
| CN102979941B (zh) * | 2012-12-13 | 2014-06-04 | 浙江师范大学 | 一种自带传感器的大流量压电叠堆阀 |
| CN104806403B (zh) * | 2015-04-30 | 2017-05-24 | 哈尔滨工程大学 | 多模式压电式常闭电控单体泵 |
| CN104806404B (zh) * | 2015-04-30 | 2017-12-12 | 哈尔滨工程大学 | 双作用压电式常闭电控单体泵 |
| FR3151068B1 (fr) * | 2023-07-13 | 2025-10-31 | Arianegroup Sas | vanne automatique ajustable |
Family Cites Families (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH399021A (de) * | 1964-02-19 | 1966-03-31 | Kistler Instrumente Ag | Beschleunigungs-Messgerät |
| GB1601306A (en) | 1978-05-08 | 1981-10-28 | Philips Electronic Associated | Fluidcontrol valve |
| DE3237258C1 (de) * | 1982-10-08 | 1983-12-22 | Daimler-Benz Ag, 7000 Stuttgart | Elektrisch vorgesteuerte Ventilanordnung |
| DE3533975A1 (de) * | 1985-09-24 | 1987-03-26 | Bosch Gmbh Robert | Zumessventil zur dosierung von fluessigkeiten oder gasen |
| JPH0637944B2 (ja) * | 1986-03-14 | 1994-05-18 | エヌオーケー株式会社 | 三方弁 |
| US5004945A (en) * | 1988-09-26 | 1991-04-02 | Nippondenso Co., Ltd. | Piezoelectric type actuator |
| DE3833093A1 (de) * | 1988-09-29 | 1990-04-12 | Siemens Ag | Fuer verbrennungskraftmaschine vorgesehene kraftstoff-einspritzduese mit steuerbarer charakteristik des kraftstoffstrahls |
| DE59010904D1 (de) * | 1990-09-25 | 2000-05-31 | Siemens Ag | Anordnung für einen in Hubrichtung wirkenden adaptiven, mechanischen Toleranzausgleich für den Wegtransformator eines piezoelektrischen Aktors |
| JP2598434Y2 (ja) * | 1992-12-09 | 1999-08-09 | 株式会社ユニシアジェックス | 超磁歪式アクチュエータ |
| US5417142A (en) * | 1992-12-18 | 1995-05-23 | Caterpillar Inc. | Hydraulic amplifier |
| DE4306073C1 (de) * | 1993-02-26 | 1994-06-01 | Siemens Ag | Zumeßvorrichtung für Fluide |
| JPH06343273A (ja) * | 1993-05-31 | 1994-12-13 | Aisin Seiki Co Ltd | 圧電アクチュエータ |
| GB2304153B (en) * | 1995-06-02 | 1999-05-05 | Caterpillar Inc | Direct operated check injector |
| DE19531652A1 (de) * | 1995-08-29 | 1997-05-07 | Bosch Gmbh Robert | Kraftstoffeinspritzventil für Brennkraftmaschinen |
| DE19538791C2 (de) * | 1995-10-18 | 1998-04-09 | Daimler Benz Ag | Piezosteuerventil für Kraftstoffeinspritzanlagen von Brennkraftmaschinen |
| JPH109084A (ja) * | 1996-06-24 | 1998-01-13 | Nissan Motor Co Ltd | 圧電式燃料噴射弁 |
| JPH10205406A (ja) * | 1997-01-27 | 1998-08-04 | Denso Corp | 燃料噴射弁 |
| DE29708546U1 (de) * | 1997-05-14 | 1998-09-10 | FEV Motorentechnik GmbH & Co. KG, 52078 Aachen | Elektrischer Festkörperaktuator mit hydraulischer Übersetzung |
| DE19743669A1 (de) * | 1997-10-02 | 1999-04-08 | Bosch Gmbh Robert | Ventil zum Steuern von Flüssigkeiten |
| DE19807903C2 (de) | 1998-02-25 | 2001-11-29 | Siemens Ag | Vorrichtung und Verfahren zur Kraftübertragung |
| DE19826339A1 (de) * | 1998-06-12 | 1999-12-16 | Bosch Gmbh Robert | Ventil zum Steuern von Flüssigkeiten |
| DE19835494C2 (de) * | 1998-08-06 | 2000-06-21 | Bosch Gmbh Robert | Pumpe-Düse-Einheit |
| DE19849203A1 (de) * | 1998-10-26 | 2000-04-27 | Bosch Gmbh Robert | Brennstoffeinspritzventil |
| US6253736B1 (en) * | 1999-08-10 | 2001-07-03 | Cummins Engine Company, Inc. | Fuel injector nozzle assembly with feedback control |
| JP2003507679A (ja) * | 1999-08-20 | 2003-02-25 | ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング | 液体を制御するための弁 |
-
1999
- 1999-09-30 DE DE19946841A patent/DE19946841A1/de not_active Ceased
-
2000
- 2000-09-16 CZ CZ20011878A patent/CZ295448B6/cs not_active IP Right Cessation
- 2000-09-16 EP EP00975772A patent/EP1135595B1/de not_active Expired - Lifetime
- 2000-09-16 KR KR1020017006489A patent/KR100806058B1/ko not_active Expired - Fee Related
- 2000-09-16 AT AT00975772T patent/ATE285034T1/de not_active IP Right Cessation
- 2000-09-16 JP JP2001527103A patent/JP2003510508A/ja active Pending
- 2000-09-16 DE DE50008956T patent/DE50008956D1/de not_active Expired - Lifetime
- 2000-09-16 US US09/856,792 patent/US6454239B1/en not_active Expired - Fee Related
- 2000-09-16 WO PCT/DE2000/003226 patent/WO2001023745A1/de not_active Ceased
Non-Patent Citations (1)
| Title |
|---|
| See references of WO0123745A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| ATE285034T1 (de) | 2005-01-15 |
| EP1135595B1 (de) | 2004-12-15 |
| DE19946841A1 (de) | 2001-05-03 |
| US6454239B1 (en) | 2002-09-24 |
| DE50008956D1 (de) | 2005-01-20 |
| KR100806058B1 (ko) | 2008-02-21 |
| KR20010101058A (ko) | 2001-11-14 |
| CZ20011878A3 (cs) | 2002-03-13 |
| JP2003510508A (ja) | 2003-03-18 |
| WO2001023745A1 (de) | 2001-04-05 |
| CZ295448B6 (cs) | 2005-08-17 |
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