EP1593837A1 - Brennstoffeinspritzventil - Google Patents
Brennstoffeinspritzventil Download PDFInfo
- Publication number
- EP1593837A1 EP1593837A1 EP05101635A EP05101635A EP1593837A1 EP 1593837 A1 EP1593837 A1 EP 1593837A1 EP 05101635 A EP05101635 A EP 05101635A EP 05101635 A EP05101635 A EP 05101635A EP 1593837 A1 EP1593837 A1 EP 1593837A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- actuator
- fuel injection
- injection valve
- housing
- hydraulic coupler
- 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
- 239000000446 fuel Substances 0.000 title claims description 44
- 238000002347 injection Methods 0.000 title claims description 33
- 239000007924 injection Substances 0.000 title claims description 33
- 238000007789 sealing Methods 0.000 claims description 9
- 238000010292 electrical insulation Methods 0.000 claims description 8
- 238000002485 combustion reaction Methods 0.000 description 7
- 239000007788 liquid Substances 0.000 description 5
- 239000002184 metal Substances 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 230000001447 compensatory effect Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000000418 atomic force spectrum Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 229920002545 silicone oil Polymers 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 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
- F02M51/00—Fuel-injection apparatus characterised by being operated electrically
- F02M51/005—Arrangement of electrical wires and connections, e.g. wire harness, sockets, plugs; Arrangement of electronic control circuits in or on fuel injection apparatus
-
- 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 a fuel injection valve according to the preamble of the main claim. It has already been proposed a fuel injection valve in the German patent application 103 60 449 with a valve housing in which a piezoelectric actuator and a hydraulic coupler are arranged, wherein the piezoelectric actuator having a positive pole and a ground terminal and wherein the valve housing, an electrical connector with a positive terminal and a ground terminal is provided for contacting with a voltage source.
- the positive terminal of the piezoelectric actuator is connected to the positive terminal of the plug and the Massepol of the piezoelectric actuator to the ground terminal of the plug via a respective cable.
- the cables Since the hydraulic coupler is disposed between the valve housing and the actuator in a portion of the fuel injector facing the plug, the cables must be routed from the plug around the coupler to the actuator. Since the hydraulic coupler performs thermally induced compensatory movements, the cables can not be tight, but must be relieved of strain by providing an additional length. The cables must not touch any neighboring parts as otherwise they could be worn through the many compensating movements over time. The disadvantage is that the cables are mechanically heavily loaded by the compensatory movements, so that after a predetermined life of the fuel injection valve cable break occurs due to fatigue or tear the soldering or welding of the cable. This leads to failure of the fuel injection valve.
- the fuel injection valve according to the invention with the characterizing features the main claim has the advantage that in a simple way a Improvement is achieved in that the life of the fuel injection valve is increased by the ground pole of the actuator to the ground terminal of the connector and the plus pole of the actuator is electrically connected to the positive terminal wirelessly are. In this way, the cable rupture failure of the fuel injection valve prevented. By eliminating the two cables space is saved, so that the Fuel injection valve can be made smaller.
- the ground terminal of the actuator via the valve housing and / or an actuator housing is electrically connected to the ground terminal of the plug, as on this way an already existing in the fuel injection valve electrically conductive connection is being used.
- the ground contact of the actuator the electromagnetic Reduced noise emission of the actuator.
- the positive pole of the actuator via the hydraulic coupler is electrically connected to the positive terminal, since in this way the power supply to the actuator via an existing electrically conductive connection.
- the actuator is biased in an actuator sleeve between an actuator head and an actuator base to pressure and the ground of the actuator is electrically contacted with the actuator head, wherein the actuator head is electrically connected via the actuator sleeve with the actuator base.
- the actuator base is electrically connected via a valve needle, a shoulder of the valve needle and a return spring cooperating with the valve needle with the valve housing and / or the actuator housing.
- the positive terminal of the plug with a head part of the hydraulic coupler and the positive pole of the actuator with a foot part of the hydraulic Coupler is electrically connected, the head part and the foot part of the hydraulic Kopplers turn electrically connected to each other via an elastic sealing element are. In this way, the power supply via the hydraulic coupler allows.
- the drawing shows schematically a fuel injection valve according to the invention.
- the fuel injection valve is, for example, in the so-called direct injection used and serves to fuel, such as gasoline or diesel, in a combustion chamber to inject an internal combustion engine.
- the fuel injection valve has a valve housing 1 with an input channel 2 for the Fuel.
- the valve housing has, for example, a cup-shaped housing part 1.1 and a the cup-shaped housing part 1.1 closing housing cover 1.2.
- the input channel 2 is provided for example in the housing cover 1.2.
- valve housing 1 In the valve housing 1 is a schematically illustrated actuator 3, for example, a piezoelectric or magnetostrictive actuator, for the axial adjustment of a valve needle. 4 arranged.
- actuator 3 for example, a piezoelectric or magnetostrictive actuator, for the axial adjustment of a valve needle. 4 arranged.
- the valve needle 4 is provided in the valve housing 1 axially movable and has, for example a needle shaft 7 facing the actuator 3 and a side facing away from the actuator 3 Valve-closing body 8 on.
- the actuator 3 transmits its movement to the needle shaft 7 of the valve needle 4, whereby the cooperating with a valve seat 9 Valve-closing body 8 opens or closes the fuel injection valve.
- the fuel injector For example, is a so-called outward-opening valve, wherein the Valve needle 4 performs a stroke in the direction of a combustion chamber 10.
- Fuel injection valve is the valve closing body 8 over its entire circumference on the valve seat 9 with line or surface contact tight and forms a sealing seat 11th
- the piezoelectric actuator 3 consists of a plurality of piezoceramic layers, which perform an expansion in the axial direction by applying an electrical voltage. In this case, the so-called inverse piezoelectric effect is exploited, in the electrical Energy is converted into mechanical energy.
- the by applying the electrical Stress-induced stretching of the piezoceramic layers is applied to the Transfer valve needle 4, wherein the valve needle 4, for example, a stroke of 40 to 50 microns. After the valve opening, the actuator 3 is shortened by Switching off the electrical voltage and the valve needle 4 is by means of a return spring 14 moves back toward the valve seat 9 and closes the fuel injection valve.
- the piezoelectric actuator 3 is for protection against tensile and bending stresses, for example arranged in an actuator sleeve 12 between an actuator head 16 and an actuator base 17, wherein the actuator sleeve 12, for example, designed as a so-called Bourdon tube and made of a metal, for example steel.
- the actuator head 16 is at an end, the valve needle 4 end facing away from the actuator sleeve 12 arranged and with the actuator sleeve 12 cohesively and / or non-positively connected, for example by welding.
- the actuator foot 17 is at a frontal, arranged the valve needle 4 facing the end of the actuator sleeve 12 and also cohesively and / or non-positively connected to the actuator sleeve 12, for example by means of Welding.
- the actuator 3 is between the actuator head 16 and the actuator base 17 by means of the actuator sleeve 12 biased to pressure.
- the needle shaft 7 of the valve needle 4 has a shoulder 18, at which the return spring 14 abuts with one end to the needle shaft 7 of the valve needle 4 to the actuator base 17th the Aktorhülse 12 and the valve closing body 8 in the direction of the valve seat 9 to press.
- the hydraulic coupler 15 is for example between the housing cover 1.2 and arranged the actuator head 16 of the actuator sleeve 12.
- the hydraulic coupler 15 has, for example, a pot-shaped cylinder 21 and a in the pot-shaped cylinder 21 axially movable piston 22. Between the pot-shaped cylinder 21 and the piston 22, a so-called coupler gap 23 is provided.
- an elastic sealing element extends 24, which is formed for example as bellows and is made of metal, to to the piston 22.
- the elastic sealing element 24 includes a coupler volume 25, which is fluidly connected via a throttle element 28 with the coupler gap 23.
- the Coupler volume 25 and the coupler gap 23 are with a liquid, for example filled with fuel or a secondary medium such as silicone oil.
- the pressure in the Liquid of the coupler volume 25 is, for example, by means of a spring element 26th increased by the spring element 26 a compressive force from the outside to the elastic sealing element 24 exerts or is provided within the elastic sealing element 24, for example in the piston 22, and a pressure force on the liquid of the coupler volume 25 exercises.
- the piston 22 has a cavity, which via the throttle element 28 with the coupler gap 23 and a flow opening with the circumference of Piston 22 is connected.
- the hydraulic coupler 15 With temporally fast movements acting on the hydraulic coupler 15, such as the extent of the actuator 3 when wired with an electrical Voltage, the hydraulic coupler 15 behaves as an extremely rigid component because in the short time almost no liquid from the coupler gap 23 through the throttle element 28 can flow into the coupler volume 25. So there the coupler gap 23 in this Situation remains constant, the stroke of the actuator 3 is completely transferred to the valve needle 4.
- the cylinder 21 of the hydraulic coupler 15 is for example the actuator 3 and the Piston 22 of the hydraulic coupler 15 facing the housing cover 1.1 or vice versa.
- the housing cover 1.1 facing part of the hydraulic coupler 15th forms a head portion 29 and the actuator 3 facing part of a foot portion 30 of the hydraulic Coupler 15.
- the hydraulic coupler 15, the actuator 3 with the actuator sleeve 12 and the valve needle 4th are arranged concentrically to a valve axis 27.
- the actuator sleeve 12 and the hydraulic coupler 15 are centered, for example, to each other and fixed, for example by means of an encapsulation 36, starting from the actuator head 16 extends to the foot part 30 of the hydraulic coupler 15.
- an actuator housing 31 is provided, which the actuator 3 and the hydraulic Hermetically encloses coupler 15 and seals against the fuel.
- the Actuator housing 31 is for example cylindrical and divides the interior of the valve housing 1 in a loaded with fuel and with the input channel. 2 flow-connected pressure chamber 32 and one the actuator 3 and the hydraulic Coupler 21 having actuator space 33.
- the actuator housing 31 is, for example, concentric arranged in the valve housing 1 and at the front ends on the valve housing. 1 supported.
- the actuator housing 31 is facing on the housing cover 1.2 End face cohesively and / or non-positively with the housing cover 1.2 connected, for example, welded.
- the needle shaft 7 of the valve needle 4 extends in Actuator 33 starting from the actuator base 17 in the direction away from the actuator 3 and extends through the actuator housing 31 through an opening 34 into the pressure chamber 32, wherein the opening 34 is sealed by means of an elastic seal 35, so that no fuel from the pressure chamber 32 into the actuator chamber 33 passes.
- the seal 35 is for example formed as an elastic corrugated, for example, made of metal is, and extends from the needle shaft 7, starting annularly to the actuator housing 31st
- the return spring 14 is located with its one end to the shoulder 18 of the valve needle. 4 and with the other end to the actuator housing 31 at.
- the actuator 3 has a positive pole 38 and a grounding pole 39, which is the negative electrical pole is on.
- At the Plug 40 is either a depending on the position of a high power switch 44 High voltage of the voltage source 43 or no voltage.
- the high power switch 44 is connected to a positive pole of the voltage source 43.
- the voltage source 43 is, for example, a transformer, for example, a 12V on-board voltage Vehicle raised to a high voltage.
- the positive pole 38 of the actuator 3 is, for example via the hydraulic coupler 15 with the positive terminal 41 electrically contacted. According to this circuit, the current led from the plug 40 via the hydraulic coupler 15 to the actuator 3.
- the grounding pole 39 of the actuator 3 is electrically contacted with the actuator head 16, wherein the actuator head 16 is connected via the actuator sleeve 12 with the actuator base 17.
- the actuator foot 17 in turn is above the needle shaft 7 of the valve needle 4, the shoulder 18th the valve needle 4 and the voltage applied to the shoulder 18 return spring 14 to the actuator housing 31 electrically connected.
- the positive terminal 41 of the plug 30 is, for example, with the head portion 29 of the hydraulic Coupler 15 and the positive pole 38 of the actuator 3 with a foot part 30 of the hydraulic Coupler 15 electrically connected.
- the head part 29 and the foot part 30 of the hydraulic coupler 15 are over the elastic Seal member 24 electrically connected to each other.
- Insulations 46,47 are, for example, disc-shaped and made of ceramic or another electric made of insulating material.
- the positive pole 38 of the actuator 3 extends, for example, through a passage opening 50 in FIG Actuator head 16 and extends through the first electrical insulation 46 through a first opening 48 in order to achieve a contact with the foot part 30 of the hydraulic coupler 15.
- the positive connection 41 of the plug 40 extends through a connection channel 51 in FIG Housing cover 1.2 and extends through the second electrical insulation 47, for example through a second opening 49 to make contact with the head portion 29 of the hydraulic To reach Koppler 15.
- the second insulation 47 may also be designed as a piezoceramic to the force curve evaluate the actuator 3 and to use to control the injection.
- the fuel is in the valve housing 1, starting from the inlet channel 2 in the pressure chamber 32 led to the valve closing body 8 upstream of the sealing seat 11.
- the valve closing body 8 lifts from the sealing seat 11 from, thereby opening a connection to the combustion chamber 10 of the internal combustion engine is, so that fuel via a between the valve closing body 8 and the valve seat 9 formed annular output gap 52 flows into the combustion chamber 10.
- the bigger the stroke of the valve needle 4 in the opening direction the larger the output gap 52 and the more fuel is injected into the combustion chamber 10 per unit time.
Landscapes
- 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
Es ist schon ein Brennstoffeinspritzventil in der deutschen Patentanmeldung 103 60 449 vorgeschlagen worden mit einem Ventilgehäuse, in dem ein piezoelektrischer Aktor und ein hydraulischer Koppler angeordnet sind, wobei der piezoelektrische Aktor einen Pluspol und einen Massepol aufweist und wobei am Ventilgehäuse ein elektrischer Stecker mit einem Plusanschluss und einem Masseanschluss zur Kontaktierung mit einer Spannungsquelle vorgesehen ist. Der Pluspol des piezoelektrischen Aktors ist mit dem Plusanschluss des Steckers und der Massepol des piezoelektrischen Aktors mit dem Masseanschluss des Steckers über jeweils ein Kabel verbunden. Da der hydraulische Koppler zwischen dem Ventilgehäuse und dem Aktor in einem dem Stecker zugewandten Abschnitt des Brennstoffeinspritzventils angeordnet ist, müssen die Kabel vom Stecker ausgehend um den Koppler herum zum Aktor geführt werden. Da der hydraulische Koppler thermisch bedingte Ausgleichsbewegungen ausführt, können die Kabel nicht straff gespannt sein, sondern müssen durch Vorsehen einer zusätzlichen Länge zugentlastet sein. Dabei dürfen die Kabel keine benachbarten Teile berühren, da sie ansonsten durch die vielen Ausgleichbewegungen mit der Zeit durchgescheuert werden könnten. Nachteilig ist, dass die Kabel durch die Ausgleichsbewegungen mechanisch stark belastet sind, so dass nach einer vorbestimmten Lebensdauer des Brennstoffeinspritzventils ein Kabelbruch durch Materialermüdung auftritt oder die Löt- oder Schweißstellen der Kabel reißen. Dies führt zu einem Ausfall des Brennstoffeinspritzventils.
der Aktor in einer Aktorhülse zwischen einem Aktorkopf und einem Aktorfuß auf Druck vorgespannt ist und der Massepol des Aktors mit dem Aktorkopf elektrisch kontaktiert ist, wobei der Aktorkopf über die Aktorhülse mit dem Aktorfuß elektrisch verbunden ist. Der Aktorfuß ist über eine Ventilnadel, eine Schulter der Ventilnadel und eine mit der Ventilnadel zusammenwirkende Rückstellfeder mit dem Ventilgehäuse und/oder dem Aktorgehäuse elektrisch verbunden.
Claims (9)
- Brennstoffeinspritzventil mit einem Ventilgehäuse, in dem ein Aktor und ein hydraulischer Koppler angeordnet ist, wobei der Aktor einen Pluspol und einen Massepol aufweist und wobei am Ventilgehäuse ein elektrischer Stecker mit einem Plusanschluss und einem Masseanschluss zur Kontaktierung mit einer Spannungsquelle vorgesehen ist, dadurch gekennzeichnet, dass der Massepol (39) des Aktors (3) mit dem Masseanschluss (42) des Steckers (40) und der Pluspol (38) des Aktors (3) mit dem Plusanschluss (41) kabellos elektrisch verbunden sind.
- Brennstoffeinspritzventil nach Anspruch 1, dadurch gekennzeichnet, dass der Massepol (39) des Aktors (3) über das Ventilgehäuse (1) und/oder ein Aktorgehäuse (31) mit dem Masseanschluss (42) des Steckers (40) elektrisch verbunden ist.
- Brennstoffeinspritzventil nach Anspruch 1, dadurch gekennzeichnet, dass der Pluspol (38) des Aktors (3) über den hydraulischen Koppler (15) mit dem Plusanschluss (41) elektrisch verbunden ist.
- Brennstoffeinspritzventil nach Anspruch 1, dadurch gekennzeichnet, dass der Aktor (3) in einer Aktorhülse (12) zwischen einem Aktorkopf (16) und einem Aktorfuß (17) auf Druck vorgespannt ist und der Massepol (39) des Aktors (3) mit dem Aktorkopf (16) elektrisch kontaktiert ist, wobei der Aktorkopf (16) über die Aktorhülse (12) mit dem Aktorfuß (17) elektrisch verbunden ist.
- Brennstoffeinspritzventil nach Anspruch 4, dadurch gekennzeichnet, dass der Aktorfuß (17) über eine Ventilnadel (4) und eine mit der Ventilnadel (4) zusammenwirkende Rückstellfeder (14) mit dem Ventilgehäuse (1) und/oder dem Aktorgehäuse (31) elektrisch verbunden ist.
- Brennstoffeinspritzventil nach Anspruch 1, dadurch gekennzeichnet, dass der Plusanschluss (41) des Steckers (40) mit einem Kopfteil (29) des hydraulischen Kopplers (15) und der Pluspol (38) des Aktors (3) mit einem Fußteil (30) des hydraulischen Kopplers (15) elektrisch verbunden ist.
- Brennstoffeinspritzventil nach Anspruch 6, dadurch gekennzeichnet, dass das Kopfteil (29) und das Fußteil (30) des hydraulischen Kopplers (15) über ein elastisches Dichtelement (24) elektrisch leitend miteinander verbunden sind.
- Brennstoffeinspritzventil nach Anspruch 1, dadurch gekennzeichnet, dass zwischen dem hydraulischen Koppler (15) und dem Aktor (3) eine erste elektrische Isolierung (46) und zwischen dem hydraulischen Koppler (15) und dem Ventilgehäuse (1) eine zweite elektrische Isolierung (47) vorgesehen ist.
- Brennstoffeinspritzventil nach Anspruch 1, dadurch gekennzeichnet, dass der hydraulische Koppler (15) zwischen dem Ventilgehäuse (1) und dem Aktor (3) in einem dem Stecker (40) zugewandten Abschnitt des Brennstoffeinspritzventils angeordnet ist.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102004021920A DE102004021920A1 (de) | 2004-05-04 | 2004-05-04 | Brennstoffeinspritzventil |
| DE102004021920 | 2004-05-04 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1593837A1 true EP1593837A1 (de) | 2005-11-09 |
| EP1593837B1 EP1593837B1 (de) | 2007-09-19 |
Family
ID=34938872
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP05101635A Expired - Lifetime EP1593837B1 (de) | 2004-05-04 | 2005-03-03 | Brennstoffeinspritzventil |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US7267111B2 (de) |
| EP (1) | EP1593837B1 (de) |
| DE (2) | DE102004021920A1 (de) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2881577A1 (de) * | 2013-12-03 | 2015-06-10 | Robert Bosch Gmbh | Piezoaktor und dessen Verwendung |
| EP1726819B1 (de) * | 2005-05-25 | 2016-05-11 | Robert Bosch Gmbh | Kraftstoff-Einspritzvorrichtung, insbesondere für eine Brennkraftmaschine mit Kraftstoff-Direkteinspritzung |
Families Citing this family (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE50305852D1 (de) * | 2002-04-04 | 2007-01-11 | Siemens Ag | Einspritzventil |
| DE112004000356D2 (de) * | 2003-03-27 | 2006-02-23 | Siemens Ag | Direkt-Einspritzventil in einem Zylinderkopf |
| DE10357189A1 (de) * | 2003-12-08 | 2005-07-07 | Robert Bosch Gmbh | Brennstoffeinspritzventil |
| FR2918123A1 (fr) * | 2007-06-27 | 2009-01-02 | Renault Sas | Dispositif d'injection de fluide. |
| US8100346B2 (en) * | 2007-11-30 | 2012-01-24 | Caterpillar Inc. | Piezoelectric actuator with multi-function spring and device using same |
| US8074625B2 (en) | 2008-01-07 | 2011-12-13 | Mcalister Technologies, Llc | Fuel injector actuator assemblies and associated methods of use and manufacture |
| US7950596B2 (en) * | 2008-06-27 | 2011-05-31 | Caterpillar Inc. | Distributed stiffness biasing spring for actuator system and fuel injector using same |
| DE102009015738B4 (de) * | 2009-03-31 | 2016-02-11 | Siemens Aktiengesellschaft | Hydraulischer Hubübersetzer und Injektor zur Dossierung von Fluiden |
| DE102010040612A1 (de) * | 2010-09-13 | 2012-03-15 | Siemens Aktiengesellschaft | Hydraulischer Temperaturkompensator und hydraulischer Hubübertrager |
| DE102012204216A1 (de) * | 2012-03-16 | 2013-09-19 | Robert Bosch Gmbh | Baugruppe |
| US9091238B2 (en) * | 2012-11-12 | 2015-07-28 | Advanced Green Technologies, Llc | Systems and methods for providing motion amplification and compensation by fluid displacement |
| US9309846B2 (en) | 2012-11-12 | 2016-04-12 | Mcalister Technologies, Llc | Motion modifiers for fuel injection systems |
| DE102013012444A1 (de) * | 2013-07-29 | 2015-01-29 | Astrium Gmbh | Ventilanordnung zum Schalten und/oder Regeln eines Medienstroms eines Raumfahrttriebwerks und Raumfahrttriebwerk |
| DE102013219225A1 (de) * | 2013-09-25 | 2015-03-26 | Continental Automotive Gmbh | Piezo-Injektor zur Kraftstoff-Direkteinspritzung |
| JP6194097B2 (ja) * | 2014-02-24 | 2017-09-06 | 株式会社フジキン | 圧電式リニアアクチュエータ、圧電駆動バルブ、及び、流量制御装置 |
| DE102015207239A1 (de) * | 2015-04-21 | 2016-10-27 | Robert Bosch Gmbh | Gasventil |
| JP7045738B1 (ja) * | 2021-03-23 | 2022-04-01 | 株式会社リンテック | 常時閉型流量制御バルブ |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3598506A (en) * | 1969-04-23 | 1971-08-10 | Physics Int Co | Electrostrictive actuator |
| US4471256A (en) * | 1982-06-14 | 1984-09-11 | Nippon Soken, Inc. | Piezoelectric actuator, and valve apparatus having actuator |
| DE19519191A1 (de) * | 1995-05-24 | 1996-12-19 | Siemens Ag | Einspritzventil |
| US6172445B1 (en) * | 1996-12-07 | 2001-01-09 | Robert Bosch Gmbh | Piezoelectric actuator |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2721100A (en) * | 1951-11-13 | 1955-10-18 | Jr Albert G Bodine | High frequency injector valve |
| US3391680A (en) * | 1965-09-01 | 1968-07-09 | Physics Internat Company | Fuel injector-ignitor system for internal combustion engines |
| US3418980A (en) * | 1965-09-01 | 1968-12-31 | Physics Internat Company | Fuel injector-ignitor system for internal combustion engines |
| US3500799A (en) * | 1967-09-27 | 1970-03-17 | Physics Int Co | Electromechanical control system |
| US4649886A (en) * | 1982-11-10 | 1987-03-17 | Nippon Soken, Inc. | Fuel injection system for an internal combustion engine |
| DE3533085A1 (de) * | 1985-09-17 | 1987-03-26 | Bosch Gmbh Robert | Zumessventil zur dosierung von fluessigkeiten oder gasen |
| DE19901711A1 (de) * | 1999-01-18 | 2000-07-20 | Bosch Gmbh Robert | Brennstoffeinspritzventil und Verfahren zum Betreiben eines Brennstoffeinspritzventils |
| ATE446590T1 (de) * | 2000-04-01 | 2009-11-15 | Bosch Gmbh Robert | Verfahren und vorrichtung zur regelung von spannungen und spannungsgradienten zum antrieb eines piezoelektrischen elements |
| ITBO20010279A1 (it) * | 2001-05-08 | 2002-11-08 | Magneti Marelli Spa | Iniettore di carburante con attuatore piezoelettrico alloggiato in una camera isolata |
| ITBO20010280A1 (it) * | 2001-05-08 | 2002-11-08 | Magneti Marelli Spa | Iniettore di carburante con attuatore piezoelettrico |
| DE10149915A1 (de) * | 2001-10-10 | 2003-04-24 | Bosch Gmbh Robert | Brennstoffeinspritzventil |
| JP4032729B2 (ja) * | 2001-12-19 | 2008-01-16 | 松下電器産業株式会社 | 流体塗布方法 |
| DE50305852D1 (de) * | 2002-04-04 | 2007-01-11 | Siemens Ag | Einspritzventil |
| DE10360451B4 (de) | 2003-02-27 | 2014-01-09 | Robert Bosch Gmbh | Brennstoffeinspritzventil |
-
2004
- 2004-05-04 DE DE102004021920A patent/DE102004021920A1/de not_active Withdrawn
-
2005
- 2005-03-03 EP EP05101635A patent/EP1593837B1/de not_active Expired - Lifetime
- 2005-03-03 DE DE502005001511T patent/DE502005001511D1/de not_active Expired - Lifetime
- 2005-05-03 US US11/121,505 patent/US7267111B2/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3598506A (en) * | 1969-04-23 | 1971-08-10 | Physics Int Co | Electrostrictive actuator |
| US4471256A (en) * | 1982-06-14 | 1984-09-11 | Nippon Soken, Inc. | Piezoelectric actuator, and valve apparatus having actuator |
| DE19519191A1 (de) * | 1995-05-24 | 1996-12-19 | Siemens Ag | Einspritzventil |
| US6172445B1 (en) * | 1996-12-07 | 2001-01-09 | Robert Bosch Gmbh | Piezoelectric actuator |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1726819B1 (de) * | 2005-05-25 | 2016-05-11 | Robert Bosch Gmbh | Kraftstoff-Einspritzvorrichtung, insbesondere für eine Brennkraftmaschine mit Kraftstoff-Direkteinspritzung |
| EP2881577A1 (de) * | 2013-12-03 | 2015-06-10 | Robert Bosch Gmbh | Piezoaktor und dessen Verwendung |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1593837B1 (de) | 2007-09-19 |
| DE102004021920A1 (de) | 2005-12-01 |
| US20050247803A1 (en) | 2005-11-10 |
| US7267111B2 (en) | 2007-09-11 |
| DE502005001511D1 (de) | 2007-10-31 |
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