EP0869278A1 - Einspritzventil mit Mitteln zur Kompensation der thermischen Längenänderung eines Piezoaktors - Google Patents
Einspritzventil mit Mitteln zur Kompensation der thermischen Längenänderung eines Piezoaktors Download PDFInfo
- Publication number
- EP0869278A1 EP0869278A1 EP98106153A EP98106153A EP0869278A1 EP 0869278 A1 EP0869278 A1 EP 0869278A1 EP 98106153 A EP98106153 A EP 98106153A EP 98106153 A EP98106153 A EP 98106153A EP 0869278 A1 EP0869278 A1 EP 0869278A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- actuator
- housing
- thermal expansion
- injection valve
- injection
- 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
- 238000002347 injection Methods 0.000 title claims abstract description 49
- 239000007924 injection Substances 0.000 title claims abstract description 49
- 239000000446 fuel Substances 0.000 claims abstract description 11
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 26
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 22
- 230000008859 change Effects 0.000 claims description 17
- 239000000463 material Substances 0.000 claims description 13
- 229910045601 alloy Inorganic materials 0.000 claims description 12
- 239000000956 alloy Substances 0.000 claims description 12
- 229910052742 iron Inorganic materials 0.000 claims description 11
- 229910052759 nickel Inorganic materials 0.000 claims description 11
- 239000000919 ceramic Substances 0.000 claims description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- 229910001374 Invar Inorganic materials 0.000 claims description 3
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 3
- 229910052799 carbon Inorganic materials 0.000 claims description 3
- 229910052749 magnesium Inorganic materials 0.000 claims description 3
- 239000011777 magnesium Substances 0.000 claims description 3
- 229910052710 silicon Inorganic materials 0.000 claims description 3
- 239000010703 silicon Substances 0.000 claims description 3
- 229910000640 Fe alloy Inorganic materials 0.000 claims description 2
- 229910000990 Ni alloy Inorganic materials 0.000 claims description 2
- 238000000034 method Methods 0.000 claims description 2
- 230000008569 process Effects 0.000 claims description 2
- 239000005341 toughened glass Substances 0.000 claims description 2
- 229910052751 metal Inorganic materials 0.000 claims 2
- 239000002184 metal Substances 0.000 claims 2
- 238000007789 sealing Methods 0.000 description 7
- 239000003795 chemical substances by application Substances 0.000 description 4
- 229910001566 austenite Inorganic materials 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- -1 copper-zinc-aluminum Chemical compound 0.000 description 2
- 238000013016 damping Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 229910001030 Iron–nickel alloy Inorganic materials 0.000 description 1
- HZEWFHLRYVTOIW-UHFFFAOYSA-N [Ti].[Ni] Chemical compound [Ti].[Ni] HZEWFHLRYVTOIW-UHFFFAOYSA-N 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910000734 martensite Inorganic materials 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229910001000 nickel titanium Inorganic materials 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 229910001285 shape-memory alloy Inorganic materials 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
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/04—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00 having valves, e.g. having a plurality of valves in series
- F02M61/08—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00 having valves, e.g. having a plurality of valves in series the valves opening in direction of fuel flow
-
- 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
- F02M51/00—Fuel-injection apparatus characterised by being operated electrically
- F02M51/06—Injectors peculiar thereto with means directly operating the valve needle
- F02M51/0603—Injectors peculiar thereto with means directly operating the valve needle using piezoelectric or magnetostrictive operating means
-
- 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
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
- F02M61/167—Means for compensating clearance or thermal expansion
Definitions
- the invention relates to an injection valve with a piezoelectric Actuator and an actuator housing according to the preamble of claims 1 and 3.
- An injection valve with a piezoelectric actuator is used to control an injection needle for injecting Fuel used in an internal combustion engine.
- DE 35 33 085 A1 describes an injection valve with a piezoelectric one Actuator known in which the piezoelectric actuator via a damping piston, a liquid cushion and is biased against the actuator housing. If the actuator changes length due to temperature fluctuations the volume of the compensation room is changed and thus the change in length in relation to the specified one Travel balanced.
- the object of the invention is a thermal change in length of an actuator without compensating for a damping chamber.
- a major advantage of the invention is based on the fact that the actuator housing with respect to the thermal expansion coefficient adapted to the actuator is, which is preferably designed as a piezoelectric actuator is. Furthermore, compensation is advantageous the thermal change in length of the actuator compared to the actuator housing achieved by providing shims that compensate for the change in length of the actuator.
- FIG 1 shows schematically an injection valve 1 with a Valve housing 19, in which a housing recess 7 is introduced is, which merges into a guide bore 20, in a Injection chamber 26 opens.
- the guide bore 20 is at one Fuel channel 6 connected, supplied via the fuel becomes.
- An actuator housing is in the housing recess 7 8 introduced, the two flanges 12 and screws 11th is firmly connected to the top of the valve housing 19.
- an adjustment plate 13 is introduced in each case.
- the adjustment plate 13 sets the insertion depth of the actuator housing 8 in the valve housing 19 fixed. This way the distance between the base plate 21 of the housing 8 and the bottom of the bore 22 of the housing recess 7 set.
- the actuator housing 8 is designed as a hollow cylinder on the underside of the base plate 21 is limited. Of the Base plate 21 is opposite a cover plate 9 on the Screwed on actuator housing 8 using fastening screws 10.
- the actuator housing 8 there are two one behind the other in the longitudinal direction arranged piezoelectric actuators 2, the upper piezoelectric actuator 2 abuts the cover plate 9.
- the piezoelectric actuators 2 are via control lines 17 connected to a control means 16.
- a simple one Only one piezoelectric actuator 2 is provided.
- the lower piezoelectric actuator 2 is operated by an actuator 3 held by a spring 14 against the lower piezoelectric Actuator 2 is cocked. That way they are piezoelectric actuators 2 biased against the cover plate 9.
- the actuator 3 goes from a holding plate in the the piezoelectric actuator 2 is mounted in a control rod 23 over, through an opening of the bottom plate 21 in the guide bore 20 is guided and on the injection needle 4 is present.
- the injection needle 4 is in the rest position of one Tension spring 25 biased against the control rod 23, wherein the injection needle 4 seals an associated sealing seat 18. As a result, the injection chamber 26 is off the fuel supply line 6 separated.
- the operation of the injection valve 1 is as follows explained in more detail: In the rest position, the piezo actuator 2 not controlled by the control means 16 and thus by the spring 14 biased against the cover plate 9.
- the injection needle 4 is also from the tension spring 25 to the sealing seat 18th and pressed against the control rod 23. There is no Injection since the fuel supply line 6 from the injection chamber 26 is separated.
- the control means 16 controls the piezoelectric ones for an injection Actuators 2 so that they expand and the actuator 3 in the direction of the injection needle 4th move against the spring force of the spring 14 and the tension spring 25.
- the injection needle 4 is lifted off the sealing seat 18 and the fuel supply line 6 with the injection chamber 26 connected. As a result, the nozzle openings 5 Delivered fuel.
- the injection process is ended by the control means 16 by the control of the piezoelectric actuator 2 canceled is so that the piezoelectric actuator 2 contracts and the actuator 3 from the spring 14 toward the cover plate 9 is pushed.
- the actuator housing 8 is adjusted by the adjustment plates 13 in such a way that in the rest position, the injection needle 4 on the assigned sealing seat 18 and the injection needle 4th when the piezoelectric actuator 2 is actuated by the associated one Sealing seat 18 is lifted off.
- the piezoelectric heats up Actuator 2, the piezoelectric actuator 2 pulls together because the thermal expansion coefficient of the piezoelectric Material has a negative coefficient of thermal expansion having.
- the actuator 3 from the spring 14 in the direction of the base plate 9 moved so that the nozzle needle 4 with high force on the Sealing seat 18 is pressed. This has the consequence that a bracing and thus a misalignment of the actuator 2 in relation on the injection needle 4, so that a safe opening and closing the nozzle opening 5 no longer guaranteed is.
- FIG. 2 shows schematically the parts of the injection valve, which are important for a thermal change in length.
- the actuator housing 8 with the cover plate schematically 9 and the connecting flange 12 shown.
- a piezoelectric actuator 2 is introduced, the the cover plate 9 rests.
- two are in a row arranged piezoelectric actuators 2 according to figure 1 provided.
- the actuator 3 is provided with the spring 14, which with the control rod 23 through an opening of the base plate 21 protrudes.
- the actuator housing 8 is made of a material that has essentially the same thermal expansion coefficient as the piezo actuator 2.
- an expansion coefficient for the actuator housing 8 that is less than is advantageous is.
- Ceramic, quartz glass or hard glasses, which essentially contain iron and nickel, are suitable as advantageous materials.
- a preferred iron and nickel alloy has essentially 36% nickel, 53% iron and small parts of carbon, silicon and magnesium.
- a corresponding iron-nickel alloy is sold by the company imphy under the product name INVAR and has 36% nickel, 0.03% carbon, 0.2% silicon and 0.3% magnesium and iron.
- the average coefficient of thermal expansion of INVAR is between 6 . 10 -7 1 / K for the temperature range between 0 ° C and 100 ° C and 75 . 10 -7 1 / K for the temperature range between 0 ° C and 400 ° C.
- hard glasses and ceramics which have an average coefficient of thermal expansion between 5 . 10 -6 and 10 .
- the corresponding ceramics have 36 as main components Parts of nickel and 44 parts of iron or 42 parts of nickel and 48 Parts iron or 46 parts nickel and 54 parts iron.
- the Toughened glasses and ceramics are used, for example, by vacuum melting under the names VACON 11, VACON 20, VACON 70 or VACODIL 36, VACODIL 42 and VACODIL 46.
- a further improvement in the compensation of the thermal linear expansion of the piezoelectric actuator 2 is achieved in that the actuator is made of a corresponding material.
- the actuator is made of a material that has a positive coefficient of expansion and expands as the temperature increases. For example, it is made of steel or a chrome alloy.
- the coefficient of thermal expansion of the actuator is, for example, between 12-16 ⁇ 10 -6 1 / K.
- LG . AG LP . AP
- LG denotes the effective length of the housing 8
- AG the thermal expansion coefficient of the housing 8
- LP the length of the piezo actuator 2
- AP the thermal expansion coefficient of the piezo actuator 2. It can be seen from FIG. 2 that the effective length of the housing LG extends from the lower edge of the cover plate 8 to the lower edge of the flange 12.
- FIG. 3 shows a further development of the invention, which consists in that between the piezoelectric actuator 2 and the Cover plate 9 arranged at least one shim 15 is.
- the shim 15 is made of a material that its thickness changes depending on the temperature.
- Appropriate Materials include memory alloys, made of nickel-titanium or copper-zinc-aluminum alloys consist.
- Draw memory alloys are characterized by the fact that they are in a temperature interval of approx. 10 K the volume and thus the thickness by an adjustable Change value.
- the shim 15 is preferably made of a material that has a coefficient of thermal expansion of 12-16 ⁇ 10 -6 1 / K. Corresponding materials are, for example, steel or chrome alloys. As a result, the lower thermal expansion coefficient of the actuator 2 is compensated for compared to the actuator housing 8.
- the arrangement according to Figure 3 works as follows: warmed the injection valve 1, the actuator housing expands 8 off and the piezoelectric actuator 2 contracts. This would result in the piezoelectric actuator 2 and the cover plate 9 a gap arise.
- shims 15 which are chosen accordingly Temperatures will increase the volume prevents a gap from forming. In this way are different coefficients of thermal expansion between the piezoelectric actuator 2 and the actuator housing 8 balanced.
- the shims 15 are in relation to the Alloy corresponding to the difference between the thermal Expansion coefficient of the piezoelectric actuator 2 and the coefficient of thermal expansion of the housing 8 is formed.
- Figure 4 shows the deformation V, i.e. the change in thickness, in Dependence on the temperature T of a copper-zinc-aluminum alloy, that when heating from one Austenite start temperature deformed and a larger volume until the austenite end temperature is reached. Becomes the same alloy based on the austenite end temperature cooled down, so begins at a martensite temperature a reduction in volume, which at a Martenside end temperature ends.
- a stack of several shims 15 provided at different temperatures change the volume. This will achieves that the stack decreases with increasing temperature Length of the piezoelectric actuator 2 by a corresponding one Compensates for increase in thickness. Through several Shims 15 will be uniform, over the temperature range distributed compensation of the change in length of the piezoelectric actuator 2 reached.
- the shims 15 are preferably provided with a corresponding one Adjustment of the thermal expansion coefficient of the housing 8, the actuator 3 according to the figures 1 and 2 combined.
- Figure 5 shows the thickness D of a stack consisting of five shims 15 exists, depending on the temperature T.
- the thickness D of the stack increases given five Temperatures T1, T2, T3, T4 and T5 each within one small temperature difference of 10 ° Kelvin by a specifiable Value too. This way an almost linear change reached the thickness of the stack and thus a corresponding one Shortened the piezoelectric actuator 2 compensated.
- the memory alloys have a high tensile strength and a high allowable stress so that the rigidity of the Connection between the piezoelectric actuator 2 and the Cover plate 9 is guaranteed.
- the advantage of memory alloys is that a large volume capacity per Unit of volume and a full job in a small temperature interval of approx. 10 ° K is reached.
- Memory alloys are, for example, in "actuators with shape memory alloys", by P. Schmidt-Mende.
- the invention is based on the example of a piezoelectric actuator described, but applies to all actuators, one for Actuator housing with different thermal expansion coefficients exhibit.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
Description
- Figur 1
- schematisch den Aufbau eines Einspritzventiles,
- Figur 2
- schematisch die für eine thermische Ausdehnung wirksamen Längen eines Einspritzventiles,
- Figur 3
- ein Einspritzventil mit Ausgleichsscheiben,
- Figur 4
- die Volumenänderung einer Ausgleichsscheibe in Abhängigkeit von der Temperatur und
- Figur 5
- die Dickenänderung eines Pakets aus mehreren Ausgleichsscheiben.
Claims (8)
- Einspritzventil mit einem steuerbaren Aktor (2),der in einem Aktorgehäuse (8) eingebracht ist, das fest mit einem Ventilgehäuse (19) verbunden ist,der in Wirkverbindung mit der Einspritznadel (4) steht und die Einspritznadel (4) zum Einspritzen von Kraftstoff steuert,
dadurch gekennzeichnet,daß das Material des Aktorgehäuses (8) einen thermischen Ausdehnungskoeffizient aufweist, der nahezu gleich dem thermischen Ausdehnungskoeffizienten des piezoelektrischen Aktors (2) ist. - Einspritzventil nach Anspruch 1, dadurch gekennzeichnet, daß der Aktor (2) über ein Stellglied (3) auf die Einspritznadel (4) einwirkt, daß eine Gesammtlänge, die sich aus der Länge (lp) des Aktors (2) und der Länge (ls) des Stellgliedes (3) ergibt, und die Länge (lG) des Aktorgehäuses (8) ein vorgegebenes Längenverhältnis zueinander aufweisen, daß der thermische Ausdehnungskoeffizient des Aktorgehäuses (8), der thermische Ausdehnungskoeffizient des Stellgliedes (3) und der thermische Ausdehnungskoeffizienten des Aktors (2) derart aufeinander abgestimmt sind, daß bei einer Temperaturänderung das vorgegebene Längenverhältnis nahezu konstant bleibt.
- Einspritzventil mit einem steuerbaren Aktor (2),der in einem Aktorgehäuse (8) eingebracht ist, das fest mit einem Ventilgehäuse (19) verbunden ist,der in Wirkverbindung mit der Einspritznadel (4) steht und die Einspritznadel (4) zum Einspritzen von Kraftstoff steuert,
dadurch gekennzeichnet,daß der Aktor (2) über ein Stellglied (3,23) auf die Einspritznadel (4) zur Steuerung eines Einspritzvorganges einwirkt, daß das Stellglied (3,23) über den piezoelektrischen Aktor (2) und über eine Ausgleichsscheibe (15) mit dem Aktorgehäuse (8) in Verbindung steht, und daß die Ausgleichsscheibe (15) einen thermischen Ausdehnungskoeffizienten aufweist, der eine thermische Längenänderung des piezoelektrischen Aktors (2) ausgleicht. - Einspritzventil nach Anspruch 3, dadurch gekennzeichnet, daß die Ausgleichsscheibe (15) mindestens teilweise aus einem Memory-Metall besteht, daß das Memory-Metall bei einem vorgegebenen Temperaturbereich das Volumen ändert.
- Einspritzventil nach Anspruch 1, dadurch gekennzeichnet, daß der Aktor als piezoelektrischer Aktor ausgebildet ist, und daß das Aktorgehäuse (8) aus einem Material besteht, dessen thermischer Ausdehnungskoeffizient kleiner als 2 * 10-6 1/Kelvin ist, vorzugsweise aus Quarzglas oder Invar aufgebaut ist.
- Einspritzventil nach Anspruch 4, dadurch gekennzeichnet, daß mehrere Ausgleichsscheiben (15) vorgesehen sind, die aus unterschiedlichen Legierungen bestehen, deren Temperaturbereiche, bei denen eine Volumenänderung auftritt, derart gewählt sind, daß eine thermische Längenänderung des Aktors (2) ausgeglichen wird, so daß die gesamte Länge, die sich aus der Länge des Aktors (2) und der Dicke der Ausgleichsscheiben (15) ergibt, im wesentlichen konstant bleibt.
- Einspritzventil nach Anspruch 1, dadurch gekennzeichnet, daß das Aktorgehäuse (8) mindestens teilweise aus Keramik, oder Hartglas besteht, das im wesentlichen Eisen und Nickel aufweist.
- Einspritzventil nach Anspruch 1, dadurch gekennzeichnet, daß das Aktorgehäuse (8) im wesentlichen aus einer Eisen- und Nickel-Legierung besteht, die im wesentlichen 36% Nickel, 53% Eisen und geringe Teile Kohlenstoff, Silizium und Magnesium aufweist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19713982 | 1997-04-04 | ||
DE19713982 | 1997-04-04 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0869278A1 true EP0869278A1 (de) | 1998-10-07 |
EP0869278B1 EP0869278B1 (de) | 2004-03-24 |
Family
ID=7825473
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98106153A Revoked EP0869278B1 (de) | 1997-04-04 | 1998-04-03 | Einspritzventil mit Mitteln zur Kompensation der thermischen Längenänderung eines Piezoaktors |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0869278B1 (de) |
DE (1) | DE59811027D1 (de) |
Cited By (41)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1999066194A1 (de) * | 1998-06-12 | 1999-12-23 | Robert Bosch Gmbh | Ventil zum steuern von flüssigkeiten |
WO2000025019A1 (de) * | 1998-10-26 | 2000-05-04 | Robert Bosch Gmbh | Brennstoffeinspritzventil |
FR2790618A1 (fr) * | 1999-03-02 | 2000-09-08 | Siemens Ag | Unite d'actionnement a compensation de temperature comportant un piezo-element |
WO2000079124A1 (de) * | 1999-06-19 | 2000-12-28 | Robert Bosch Gmbh | Brennstoffeinspritzventil |
DE19948359A1 (de) * | 1999-10-07 | 2001-01-11 | Siemens Ag | Aktoreinheit mit Keramikelement zur Temperaturkompensation |
WO2001014731A1 (de) * | 1999-08-20 | 2001-03-01 | Robert Bosch Gmbh | Ventil zum steuern von flüssigkeiten |
WO2001024288A2 (de) * | 1999-09-30 | 2001-04-05 | Robert Bosch Gmbh | Verstelleinrichtung zum ansteuern einer regel- und/oder absperrvorrichtung |
WO2001023748A1 (de) | 1999-09-30 | 2001-04-05 | Robert Bosch Gmbh | Brennstoffeinspritzventil |
WO2001029401A1 (de) | 1999-10-21 | 2001-04-26 | Robert Bosch Gmbh | Brennstoffeinspritzventil |
US6313568B1 (en) * | 1999-12-01 | 2001-11-06 | Cummins Inc. | Piezoelectric actuator and valve assembly with thermal expansion compensation |
WO2001029400A3 (en) * | 1999-10-15 | 2001-11-08 | Westport Res Inc | Directly actuated injection valve |
WO2001055578A3 (de) * | 2000-01-28 | 2002-02-14 | Bosch Gmbh Robert | Einspritzdüse |
DE10037743A1 (de) * | 2000-08-02 | 2002-02-21 | Siemens Ag | Piezo-Aktuator |
WO2002015291A1 (de) * | 2000-08-17 | 2002-02-21 | Siemens Aktiengesellschaft | Geräuschgedämpfte aktoreinheit |
WO2002031347A1 (en) * | 2000-10-11 | 2002-04-18 | Siemens Vdo Automotive Corporation | Compensator assembly having a flexible diaphragm and an internal filling tube for a fuel injector and method |
WO2003033904A1 (de) | 2001-10-10 | 2003-04-24 | Robert Bosch Gmbh | Brennstoffeinspritzventil |
DE10149915A1 (de) * | 2001-10-10 | 2003-04-24 | Bosch Gmbh Robert | Brennstoffeinspritzventil |
WO2003040545A1 (de) * | 2001-10-31 | 2003-05-15 | Robert Bosch Gmbh | Brennstoffeinspritzventil |
US6564777B2 (en) | 1999-10-15 | 2003-05-20 | Westport Research Inc. | Directly actuated injection valve with a composite needle |
US6575138B2 (en) | 1999-10-15 | 2003-06-10 | Westport Research Inc. | Directly actuated injection valve |
US6584958B2 (en) | 1999-10-15 | 2003-07-01 | Westport Research Inc. | Directly actuated injection valve with a ferromagnetic needle |
WO2003067071A1 (de) * | 2002-02-05 | 2003-08-14 | Robert Bosch Gmbh | Brennstoffeinspritzventil |
US6749127B2 (en) | 2002-02-11 | 2004-06-15 | Siemens Vdo Automotive Corporation | Method of filling fluid in a thermal compensator |
DE10308915A1 (de) * | 2003-02-28 | 2004-09-09 | Robert Bosch Gmbh | Brennstoffeinspritzventil |
EP1473460A1 (de) * | 1999-10-15 | 2004-11-03 | Westport Research Inc. | Direkt betätigtes Kraftstoffeinspritzventil |
EP1505295A1 (de) * | 1999-05-07 | 2005-02-09 | Siemens Aktiengesellschaft | Verfahren zum Positionieren des Stellantriebs in einem Kraftstoffinjektor und Vorrichtung zur Durchfuehrung des Verfahrens |
WO2005026532A1 (de) * | 2003-09-12 | 2005-03-24 | Siemens Aktiengesellschaft | Dosiervorrichtung |
EP1519037A1 (de) * | 2003-09-29 | 2005-03-30 | Robert Bosch Gmbh | Brennstoffeinspritzventil |
WO2005066486A1 (de) | 2004-01-12 | 2005-07-21 | Siemens Aktiengesellschaft | Piezoaktor mit mitteln zur kompensation der thermischen längenänderung und kraftstoff-einspritzventil mit piezoaktor |
US6991187B2 (en) | 2000-11-13 | 2006-01-31 | Siemens Automotive Corporation | Magneto-hydraulic compensator for a fuel injector |
DE102004034520A1 (de) * | 2004-07-16 | 2006-02-16 | Siemens Ag | Piezobetriebener Aktor |
DE102004030606A1 (de) * | 2004-06-24 | 2006-02-23 | Siemens Ag | Piezoelektrischer Stellantrieb für einen Kraftstoffinjektor einer Brennkraftmaschine sowie Verwendung hierfür |
WO2006021577A1 (de) * | 2004-08-25 | 2006-03-02 | Siemens Aktiengesellschaft | Verfahren und vorrichtung zur bewertung des temperaturverhaltens eines piezoelektrischen aktors in einem kraftstoffinjektor |
DE19928185B4 (de) * | 1999-06-19 | 2006-05-24 | Robert Bosch Gmbh | Piezoaktor |
WO2007023049A1 (de) * | 2005-08-26 | 2007-03-01 | Robert Bosch Gmbh | Kraftstoffinjektor mit direkter nadelsteuerung |
DE19928179B4 (de) * | 1999-06-19 | 2008-07-31 | Robert Bosch Gmbh | Piezoaktor |
DE102007033033A1 (de) * | 2007-07-16 | 2009-01-22 | Continental Automotive Gmbh | Aktoreinheit für ein Einspritzsystem einer Brennkraftmaschine |
DE102008060518A1 (de) * | 2008-12-04 | 2010-07-15 | Continental Automotive Gmbh | Einspritzventil |
WO2010136655A1 (en) * | 2009-05-28 | 2010-12-02 | Wärtsilä Finland Oy | Fuel injector valve |
DE102019120684A1 (de) * | 2019-07-31 | 2021-02-04 | Vega Grieshaber Kg | Antriebseinheit für einen Vibrationssensor und Vibrationssensor mit einer solchen Antriebseinheit |
EP3808653A1 (de) * | 2019-10-18 | 2021-04-21 | Claverham Limited | Lineare aktuatoren |
Families Citing this family (1)
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US20080303644A1 (en) * | 2007-06-07 | 2008-12-11 | Scott Technologies, Inc. | Sounder Assembly for a personal alert safety system |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4284263A (en) * | 1978-05-08 | 1981-08-18 | U.S. Philips Corporation | Temperature-compensated control valve |
GB2087660A (en) * | 1980-10-01 | 1982-05-26 | Daimler Benz Ag | Electrically activated control elements |
DE3533085A1 (de) | 1985-09-17 | 1987-03-26 | Bosch Gmbh Robert | Zumessventil zur dosierung von fluessigkeiten oder gasen |
DE19538791A1 (de) * | 1995-10-18 | 1997-04-24 | Daimler Benz Ag | Piezosteuerventil für Kraftstoffeinspritzanlagen von Brennkraftmaschinen |
-
1998
- 1998-04-03 DE DE59811027T patent/DE59811027D1/de not_active Revoked
- 1998-04-03 EP EP98106153A patent/EP0869278B1/de not_active Revoked
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4284263A (en) * | 1978-05-08 | 1981-08-18 | U.S. Philips Corporation | Temperature-compensated control valve |
GB2087660A (en) * | 1980-10-01 | 1982-05-26 | Daimler Benz Ag | Electrically activated control elements |
DE3533085A1 (de) | 1985-09-17 | 1987-03-26 | Bosch Gmbh Robert | Zumessventil zur dosierung von fluessigkeiten oder gasen |
DE19538791A1 (de) * | 1995-10-18 | 1997-04-24 | Daimler Benz Ag | Piezosteuerventil für Kraftstoffeinspritzanlagen von Brennkraftmaschinen |
Non-Patent Citations (1)
Title |
---|
RUMPHORST M: "EIN NEUES ELEKTRONISCHES HOCHDRUCK-EINSPRITZSYSTEM FUR DIESELMOTOREN A NEW ELECTRONIC HIGH PRESSURE INJECTION SYSTEM", MTZ MOTORTECHNISCHE ZEITSCHRIFT, vol. 56, no. 3, 1 March 1995 (1995-03-01), pages 142 - 148, XP000490673 * |
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