EP0925440B1 - Kraftstoffeinspritzvorrichtung - Google Patents
Kraftstoffeinspritzvorrichtung Download PDFInfo
- Publication number
- EP0925440B1 EP0925440B1 EP98921342A EP98921342A EP0925440B1 EP 0925440 B1 EP0925440 B1 EP 0925440B1 EP 98921342 A EP98921342 A EP 98921342A EP 98921342 A EP98921342 A EP 98921342A EP 0925440 B1 EP0925440 B1 EP 0925440B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- valve
- fuel
- pressure
- passage
- fuel 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.)
- Expired - Lifetime
Links
- 239000000446 fuel Substances 0.000 title claims abstract description 63
- 238000002347 injection Methods 0.000 claims abstract description 52
- 239000007924 injection Substances 0.000 claims abstract description 52
- 238000002485 combustion reaction Methods 0.000 claims abstract description 9
- 230000005284 excitation Effects 0.000 claims description 3
- 230000001276 controlling effect Effects 0.000 claims 2
- 238000007789 sealing Methods 0.000 description 9
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000003292 diminished effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 230000001960 triggered effect Effects 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
- F02M63/0031—Valves characterized by the type of valves, e.g. special valve member details, valve seat details, valve housing details
- F02M63/0045—Three-way valves
-
- 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
-
- 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
- F02M45/00—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship
- F02M45/02—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship with each cyclic delivery being separated into two or more parts
- F02M45/04—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship with each cyclic delivery being separated into two or more parts with a small initial part, e.g. initial part for partial load and initial and main part for full load
- F02M45/08—Injectors peculiar thereto
-
- 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
- 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
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/20—Output circuits, e.g. for controlling currents in command coils
- F02D41/2096—Output circuits, e.g. for controlling currents in command coils for controlling piezoelectric injectors
Definitions
- the invention relates to a fuel injection device according to the preamble of claim 1.
- a 3-way valve is used with which Help the control room either only with the high pressure fuel source or only with a fuel return tank connected is.
- the actuation of the valve member this 3-way valve is made using an electromagnet.
- This known configuration is accordingly the control of the 3-way valve either the injection valve member in fully open or in completely closed Positioned.
- the fuel injection device with the characterizing features of claim 1 has the compared to the advantage that the valve body of the valve member can be brought into an intermediate position so that the Control room by appropriate control of the existing one Connection to the high-pressure fuel source on the one hand and on the other hand a lower pressure to the relief space or higher pressure than if the control room exclusively with one or the other of the pressure levels would be connected.
- the injection valve member can thus also take an intermediate position corresponding to a partial opening, which allows a diminished in this position Fuel injection rate of fuel into the combustion chamber too cause. It can be beneficial in this way with the help a pre-injection of a 3-way valve of the defined type can be realized that regularly only a very small injection quantity requires.
- FIG. 1 shows a schematic representation the fuel injection device
- Figure 2 shows a fuel injection valve the fuel injector in Section
- Figure 3 that controls the fuel injector Valve element
- Figure 4 shows a pressure curve, the control and the effect of the control operations of the 3-way valve clarified.
- the invention is based on a fuel injection device, which has a high-pressure fuel pump 5 which from a fuel reservoir 6, if necessary with the interposition a prefeed pump receives fuel and over a pressure line 7, brought to high pressure, a high-pressure fuel reservoir 8 feeds.
- a high-pressure fuel pump 5 which from a fuel reservoir 6, if necessary with the interposition a prefeed pump receives fuel and over a pressure line 7, brought to high pressure, a high-pressure fuel reservoir 8 feeds.
- These parts are as To denote high-pressure fuel sources.
- To control the Pressure in the high-pressure fuel reservoir 8 is a pressure control valve 11 containing relief line 12 is provided, from the high-pressure fuel reservoir back to the fuel tank 6 leads.
- the high-pressure fuel accumulator 8 supplies via fuel lines 15 each Fuel injection valve 14 with fuel injection pressure brought fuel.
- control unit 18 which corresponds to the operating parameters of the internal combustion engine the opening of the fuel injection valves 14 controls and so the fuel injection start and fuel injection duration certainly. From this control unit at the same time also controlled the pressure control valve, whereby as one of the parameters of the pressure in the high-pressure fuel reservoir is detected by means of a pressure sensor 9 and the control unit is fed.
- FIG. 2 shows parts of a fuel injection valve 14 in the Cut.
- This has a housing 19 by in a Longitudinal bore 20 is a needle-like injection valve member 21 is led.
- This injector member is at one end provided with a conical sealing surface 23, those protruding into the combustion chamber of the internal combustion engine Tip 24 of the valve housing interacts with a seat, from which lead out injection openings 25, which the interior of the fuel injector, here the injector member 21 surrounding, with under injection pressure Connects fuel-filled annular space 27 with the combustion chamber, so as to perform an injection when the injector member has lifted from its seat.
- the annulus 27 is connected to a pressure chamber 29 which is in constant Connected to a pressure line 30, which with the fuel line 15 of the respective fuel injection valve connected is.
- the so the high-pressure fuel storage 8 supplied fuel pressure also acts in the Pressure chamber 29 and there on a pressure shoulder 31, via which in known manner, the fuel injection valve member at suitable Conditions are lifted off its valve seat can. At the other end of the injection valve member, this is in guided a cylinder bore 33 and closes there its end face 34 a control room 36.
- the closed position the injection valve member is by the Pressure in the control room 36 and also by a compression spring that here symbolically only as arrow F acting in the closing direction is registered, controlled. While the in closing force acting spring F is unchangeable in its characteristics, with the help of the pressure in the control room 36, the opening or. Closing movement of the injection valve member triggered.
- control room 36 is connected via a channel 37 with a 3-way valve trained valve 40 connected.
- a channel 37 opens into a valve chamber 41 in which a closing body 42 of the valve member 43 of the valve 40 is adjustable is arranged.
- the valve member 43 has one with the locking body 42 firmly connected plunger 45.
- Am Closing body is a first sealing surface 46 on its one End face and a second sealing surface 47 on its other End face arranged. The second face goes in a connecting part 48 to the plunger 45, the one has a smaller diameter than the rest, in a guide hole 50 guided plungers 45.
- annular space 51 Between the guide bore and the connecting part 48 of the plunger 45 becomes an annular space 51 formed, into which an inflow channel 53 opens.
- the forms Annulus 51 a flow channel between the inlet channel and the valve chamber 41.
- a valve seat 54 At the mouth of the guide bore 50 in the valve chamber 41 is formed a valve seat 54, which as second valve seat together with the second sealing surface 47 acts.
- Coaxial with this and coaxial with the valve member 43 or the closing body 42 is at the opposite end of the Valve chamber 41 formed a first valve seat 55 with which the first sealing surface 46 acts together. From valve seat 55 leads from a drain channel 57 from the valve chamber 41. This is also shown in Figure 2 and leads to the Fuel reservoir 6 back or to a different design Relief chamber.
- the inflow channel 53 which can also be seen in Figure 2, is with connected to the fuel line 15 and can therefore fuel from the high-pressure fuel reservoir via the valve chamber 41 when the valve member 43 is lifted from the second valve seat 54 Feed control room 36.
- the first and second sealing surfaces 46 and 47 are present Trap conical.
- the actuation of the The valve member 43 does not take place via the tappet 45 drive 59, shown as a piezo arrangement, e.g. as sogn. Piezostack or as a magnetostrictive element is executed.
- These drives have the advantage that they Carry out travel distances analogous to the application of voltage and with high actuation force, albeit absolutely Generatable path is relatively small, so that with large travel ranges large piezo element packs can also be used have to.
- the further advantage of such drives is that that they act very quickly, so that fast switching operations are feasible, especially in the injection technology are of great advantage.
- the valve body 42 can now be adjusted by the drive 59 be that either with its first sealing surface 46 comes to rest on the first valve seat 55 and thus the Connection between control room 36 and drain channel 59 blocks.
- the high pressure of the control chamber 36 High-pressure fuel reservoir 5 supplied and the injection valve member 21 due to the resulting force from the its end face 34 acting pressure held in the closed position.
- the valve body 42 With its second sealing surface 47 in contact on the second valve seat 54 and thus closes the Inlet of high pressure fuel to the control room 36 and opens the drain channel 57 at the same time.
- the control chamber 36 is then relieved and the injection valve member 21 may be due to on his pressure shoulder 31 acting high fuel pressure get into the open position and thus a fuel injection cause. If the control room 36 again with high The injection valve member is filled with fuel pressure 21 again because of the predominant force in the closing direction brought into the closed position.
- the throttle 58 provided in the drain channel 57. It can still be in the inlet channel 53 also a throttle 60 are used, the Influence of pressure in the control room affected, both throttles 58 and 60 together on the state of the intermediate position of the Valve body between the two valve seats and the Pressure formation in the control room 36 are coordinated.
- These chokes and / or the respective approach of the closing body 42 have one or the other of the valve seats 54 and 55 Influence on the resulting pressure of the control of the pilot injection quantity.
- the inlet channel opens 53 into the annular space 51.
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)
Abstract
Description
Claims (4)
- Kraftstoffeinspritzvorrichtung für Brennkraftmaschine mit einer Kraftstoffhochdruckquelle (5,8), an die ein Kraftstoffeinspritzventil (14) angeschlossen ist, das ein Einspritzventilglied (21) zur Steuerung einer Einspritzöffnung (25) und einen Steuerraum (36) aufweist, der von einer beweglichen Wand (34) begrenzt wird, die mit dem Kraftstoffeinspritzventilglied (21) wenigstens mittelbar verbunden ist, und mit einem Zuflußkanal (53), über den die Kraftstoffhochdruckquelle mit dem Steuerraum (36) verbindbar ist, und mit einem Abflußkanal (57) über den der Steuerraum (36) mit einem Entlastungsraum (6) verbindbar ist, wobei die genannten Verbindungen zum und von Steuerraum über ein Ventil (40) steuerbar sind, das ein Ventilglied (43) mit einem Schließkörper (42) aufweist, der koaxial zu zwei Ventilsitzen (54, 55) in einem Ventilraum (41) verschiebbar angeordnet ist, der über ein Kanal (37) ständig mit dem Steuerraum (36) verbunden ist und mit einem von einem elektrisch betätigtem Antrieb (59) bewegten Stößel (45) durch den der Schließkörper (42) zwischen den Ventilsitzen (54, 55) bewegt wird und in einer sich koaxial zu dem einen der Ventilsitze (54) anschließenden Führungsbohrung (50) geführt ist, wobei zwischen dem einen Ventilsitz (54), dem Stößel (45, 48) und der Führungsbohrung (50) im Gehäuse (19) des Ventils (40) ein Durchflußkanal (51) gebildet wird der mit dem Abfluß- oder dem Zuflußkanal verbunden ist und an dem anderen Ventilsitz (55) angrenzend der Zuflußoder der Abflußkanal koaxial weiterführt und in wenigstens einem der Kanäle eine den Durchfluß steuernde Drossel (58, 60) angeordnet ist, dadurch gekennzeichnet, daß als Antrieb (59) des Stößels (45) ein Piezoelement oder ein magnetostriktives Element vorgesehen ist, dessen Erregung so steuerbar ist, daß der Schließkörper (42) eine Stellung einnimmt, in der der eine oder der andere der Ventilsitze (54, 55) ganz geöffnete bzw. geschlossen ist oder eine Zwischenstellung einnimmt, in der steuerwirksam beide Ventilsitze (54, 55) geöffnet sind, und dabei der Steuerraum (36) eine Teilentlastung erfährt durch die das Einspritzventilglied (21) in eine Teilöffnungsposition bewegt wird.
- Kraftstoffeinspritzvorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß der Stößel (45) fest mit dem Schließkörper (42) verbunden ist.
- Kraftstoffeinspritzvorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß sowohl im Zuflußkanal (53) als auch im Abflußkanal (57) jeweils eine Drossel (60, 58) angeordnet ist.
- Kraftstoffeinspritzvorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß der Zuflußkanal (53) auf der Seite des Stößels (45) in den Ventilraum (41) einmündet.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19729844 | 1997-07-11 | ||
DE19729844A DE19729844A1 (de) | 1997-07-11 | 1997-07-11 | Kraftstoffeinspritzvorrichtung |
PCT/DE1998/000700 WO1999002849A1 (de) | 1997-07-11 | 1998-03-10 | Kraftstoffeinspritzvorrichtung |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0925440A1 EP0925440A1 (de) | 1999-06-30 |
EP0925440B1 true EP0925440B1 (de) | 2002-06-19 |
Family
ID=7835459
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98921342A Expired - Lifetime EP0925440B1 (de) | 1997-07-11 | 1998-03-10 | Kraftstoffeinspritzvorrichtung |
Country Status (6)
Country | Link |
---|---|
US (1) | US6196193B1 (de) |
EP (1) | EP0925440B1 (de) |
JP (1) | JP4024314B2 (de) |
KR (1) | KR100561791B1 (de) |
DE (2) | DE19729844A1 (de) |
WO (1) | WO1999002849A1 (de) |
Families Citing this family (44)
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DE19939452C2 (de) * | 1999-08-20 | 2003-04-17 | Bosch Gmbh Robert | Vorrichtung zur Einspritzung von Kraftstoff |
DE19939451A1 (de) * | 1999-08-20 | 2000-11-02 | Bosch Gmbh Robert | Aggregat zur Einspritzung von Kraftstoff |
DE19939443A1 (de) * | 1999-08-20 | 2001-03-01 | Bosch Gmbh Robert | Vorrichtung zur Steuerung des Druckverlaufs einer Pumpeneinheit |
DE19939447A1 (de) * | 1999-08-20 | 2000-11-23 | Bosch Gmbh Robert | Einrichtung zur Einspritzung von Kraftstoff |
DE10038995A1 (de) * | 1999-10-16 | 2001-04-19 | Bosch Gmbh Robert | Verfahren und Vorrichtung zur Steuerung der Kraftstoffzumessung in einer Brennkraftmaschine |
JP2003512563A (ja) * | 1999-10-16 | 2003-04-02 | 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 | 内燃機関の燃料調量の制御のための方法及び装置 |
DE10002722A1 (de) * | 2000-01-22 | 2001-08-02 | Bosch Gmbh Robert | Ventil zum Steuern von Flüssigkeiten |
EP1138910B1 (de) | 2000-04-01 | 2005-03-23 | Robert Bosch GmbH | Steuerung der Polarization der piezoelektrischen Elemente vor jeder ersten Einspritzung zur Erreichung von optimalen Startbedingungen |
EP1139442B1 (de) | 2000-04-01 | 2008-07-30 | Robert Bosch GmbH | Vorrichtung und Verfahren zur Erkennung eines Kurzschlusses zur Batteriespannung während der Ansteuerung piezoelektrischer Elemente |
EP1139447A1 (de) | 2000-04-01 | 2001-10-04 | Robert Bosch GmbH | Verfahren und Vorrichtung zur Bestimmung einer frequenzkompensierten Kapazität eines piezoelektrischen Elements |
EP1138920B1 (de) * | 2000-04-01 | 2004-11-17 | Robert Bosch GmbH | Steuerverfahren und Vorrichtung zur Mehrstellungventilbetätigung in einem Kraftstoffeinspritzsystem |
EP1138919B1 (de) * | 2000-04-01 | 2005-04-06 | Robert Bosch GmbH | Brennstoffeinspritzanlage |
EP1138913A1 (de) | 2000-04-01 | 2001-10-04 | Robert Bosch GmbH | Methode und Apparat für die Aufladung eines piezoelektrischen Elements basierend auf gemessenen Ladungs- bzw. Entladungszeiten |
EP1138907B1 (de) | 2000-04-01 | 2006-10-04 | Robert Bosch GmbH | Kraftstoffeinspritzsystem |
EP1138912A1 (de) | 2000-04-01 | 2001-10-04 | Robert Bosch GmbH | Online Optimierung eines Einspritzsystems mit piezolektrischen Elementen |
DE60005786T2 (de) | 2000-04-01 | 2004-08-12 | Robert Bosch Gmbh | Optimierung von Einspritzsystemen, die piezoelektrische Elemente verwenden , durch Kompensation der Temperaturabhängigkeit |
EP1138903B1 (de) * | 2000-04-01 | 2004-05-26 | Robert Bosch GmbH | Zeit und Fall-kontrolliertes Aktivierungssystem für die Aufladung und die Entladung von piezoelektrischen Elementen |
DE60018385T2 (de) | 2000-04-01 | 2005-12-29 | Robert Bosch Gmbh | Bestimmung der Temperatur eines piezoelektrischen Elements unter Verwendung eines Energiebilanzmodells des piezoelektrischen Elements |
EP1138918B1 (de) | 2000-04-01 | 2005-11-09 | Robert Bosch GmbH | Verfahren und Vorrichtung zum Erzeugen von Steuerparametern in einem Steuersystem |
DE60023265T2 (de) | 2000-04-01 | 2006-05-24 | Robert Bosch Gmbh | Steuerung einer Einspritzanlage mit piezoelektrischen Elementen |
DE60007836T2 (de) | 2000-04-01 | 2004-12-16 | Robert Bosch Gmbh | Ausgleich der Spieltoleranzen in verschieden Losen wegen der Schwankungen der Schichtdicke oder der Zahl der Schichten in mehrschichtigen piezoelektrischen Elementen |
DE60022619T2 (de) | 2000-04-01 | 2006-03-16 | Robert Bosch Gmbh | Verfahren und Vorrichtung zum Laden eines piezoelektrischen Elements |
DE60041807D1 (de) | 2000-04-01 | 2009-04-30 | Bosch Gmbh Robert | Verfahren und Vorrichtung zur Regulierung von Systemparametern |
DE60019260T2 (de) | 2000-04-01 | 2006-02-09 | Robert Bosch Gmbh | Verfahren und Vorrichtung zur zeitgesteuerter Spannungsmessung über einer Vorrichtung in einem Ladungskreis eines piezoelektrischen Element |
DE10016476A1 (de) * | 2000-04-01 | 2001-12-06 | Bosch Gmbh Robert | Verfahren zur Diagnose der Spannungsansteuerung für einen piezoelektrischen Aktor eines Einspritzventils |
EP1139445A1 (de) | 2000-04-01 | 2001-10-04 | Robert Bosch GmbH | Methode und Vorrichtung für die Diagnose einer Störung in einem System, das ein piezoelektrisches Element verwendet |
DE60023446T2 (de) | 2000-04-01 | 2006-05-18 | Robert Bosch Gmbh | Verfahren und Vorrichtung zur Bestimmung der Ladungsquantität während des Auf- und Entladens von piezoelektrischen Elementen |
DE60018549T2 (de) | 2000-04-01 | 2006-04-20 | Robert Bosch Gmbh | Brennstoffeinspritzanlage |
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 |
DE60003782D1 (de) | 2000-04-01 | 2003-08-14 | Bosch Gmbh Robert | Methode und Apparat für die Aufladung eines piezoelektrischen Elements |
EP1139449A1 (de) | 2000-04-01 | 2001-10-04 | ROBERT BOSCH GmbH | Brennstoffeinspritzanlage |
DE60011993T2 (de) | 2000-04-01 | 2004-12-09 | Robert Bosch Gmbh | Apparat und Methode für das Ermitteln einer Verringerung der Kapazität während des Antriebes von piezoelektrischen Elementen |
DE10032022B4 (de) * | 2000-07-01 | 2009-12-24 | Robert Bosch Gmbh | Verfahren zur Bestimmung der Ansteuerspannung für ein Einspritzentil mit einem piezoelektrischen Aktor |
JP3829604B2 (ja) * | 2000-08-30 | 2006-10-04 | トヨタ自動車株式会社 | 燃料噴射装置 |
DE10101797A1 (de) * | 2001-01-17 | 2002-07-18 | Bosch Gmbh Robert | Einspritzventil |
DE10131640A1 (de) * | 2001-06-29 | 2003-01-16 | Bosch Gmbh Robert | Kraftstoffinjektor mit Einspritzverlaufsformung durch schaltbare Drosselelemente |
DE10146739A1 (de) * | 2001-09-22 | 2003-04-10 | Bosch Gmbh Robert | Kraftstoffeinspritzeinrichtung für eine Brennkraftmaschine |
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JP4325589B2 (ja) * | 2004-07-06 | 2009-09-02 | 株式会社デンソー | コモンレール用インジェクタ |
JP4855946B2 (ja) | 2006-06-08 | 2012-01-18 | 株式会社デンソー | 燃料噴射弁 |
JP2008002306A (ja) * | 2006-06-21 | 2008-01-10 | Denso Corp | 燃料噴射弁 |
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US9897033B2 (en) | 2014-05-15 | 2018-02-20 | Cummins Inc. | High pressure, high speed regulating switch valve |
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-
1997
- 1997-07-11 DE DE19729844A patent/DE19729844A1/de not_active Withdrawn
-
1998
- 1998-03-10 US US09/254,632 patent/US6196193B1/en not_active Expired - Lifetime
- 1998-03-10 JP JP50795499A patent/JP4024314B2/ja not_active Expired - Fee Related
- 1998-03-10 KR KR1019997002010A patent/KR100561791B1/ko not_active IP Right Cessation
- 1998-03-10 WO PCT/DE1998/000700 patent/WO1999002849A1/de active IP Right Grant
- 1998-03-10 DE DE59804498T patent/DE59804498D1/de not_active Expired - Lifetime
- 1998-03-10 EP EP98921342A patent/EP0925440B1/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JP4024314B2 (ja) | 2007-12-19 |
KR100561791B1 (ko) | 2006-03-21 |
DE19729844A1 (de) | 1999-01-14 |
DE59804498D1 (de) | 2002-07-25 |
US6196193B1 (en) | 2001-03-06 |
JP2001500218A (ja) | 2001-01-09 |
EP0925440A1 (de) | 1999-06-30 |
KR20000068531A (ko) | 2000-11-25 |
WO1999002849A1 (de) | 1999-01-21 |
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