EP1115971B1 - Brennstoffeinspritzventil - Google Patents
Brennstoffeinspritzventil Download PDFInfo
- Publication number
- EP1115971B1 EP1115971B1 EP99923386A EP99923386A EP1115971B1 EP 1115971 B1 EP1115971 B1 EP 1115971B1 EP 99923386 A EP99923386 A EP 99923386A EP 99923386 A EP99923386 A EP 99923386A EP 1115971 B1 EP1115971 B1 EP 1115971B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- actuator
- valve
- fuel injection
- valve needle
- injection valve
- 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 82
- 238000002347 injection Methods 0.000 title claims abstract description 22
- 239000007924 injection Substances 0.000 title claims abstract description 22
- 238000007789 sealing Methods 0.000 claims abstract description 12
- 238000002485 combustion reaction Methods 0.000 claims abstract description 11
- 230000005540 biological transmission Effects 0.000 claims abstract description 9
- 230000008878 coupling Effects 0.000 claims description 8
- 238000010168 coupling process Methods 0.000 claims description 8
- 238000005859 coupling reaction Methods 0.000 claims description 8
- 230000008901 benefit Effects 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 230000036316 preload Effects 0.000 description 1
- 230000003252 repetitive effect Effects 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
- 230000009466 transformation Effects 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
- 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
- F02M47/00—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure
- F02M47/04—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure using fluid, other than fuel, for injection-valve actuation
- F02M47/046—Fluid pressure acting on injection-valve in the period of injection to open it
-
- 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
- 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 fuel injector according to the preamble of claim 1.
- the valve has one of the actuator valve closing body which can be actuated by means of a valve needle, the one with a valve seat surface to a sealing seat cooperates on.
- the actuator is tubular and there is a between the actuator and the valve needle hydraulic transmission device intended.
- the fuel injector also has one as an actuator on the translation device acting translation piston, the actuator Encloses the booster piston.
- the fuel injector is as an inward opening fuel injector executed. How the Fuel injector is such that the Booster piston and the valve needle when the actuator is excited Always move in the same direction. If the actuator is excited, so the booster piston moves up, and in succession which lifts by the pressure drop in the hydraulic Translator chamber the valve needle in the same Direction of movement from the sealing seat.
- a disadvantage of this known design is one Fuel injector with piezoelectric actuator that because of a relatively large volume and a relative large cross-sectional area actuator particularly compact design can be realized. Furthermore is disadvantageous that for the translation device special hydraulic medium is used that itself due to leakage loss over time can evaporate. This can be how the Transmission device and the service life of the fuel injector affect.
- the fuel injector according to the invention with the Features of claim 1 has the advantage that due to the tubular actuator that the Valve needle or an actuating element for actuating the Valve needle encloses at least in sections, one particularly compact and inexpensive design is achieved.
- the internal volume of the tubular, piezoelectric or magnetostrictive actuator can be used to hold components serve that in the known piezo actuator in the axial Extension of the piezo actuator.
- the fuel injector according to the invention is particularly suitable for injecting petrol directly into the Combustion chamber of an internal combustion engine is suitable as there occurring fuel pressures in a range of about 100 are up to 200 bar and comparatively significantly lower are as with diesel injectors.
- the translation piston can preferably on the Side facing away from the sealing seat have a flange which the actuator is supported on and with which the actuator is preferably glued.
- the translation piston can be in the tubular actuator can be integrated, creating a compact design results.
- the actuator is preferably pretensioned by a first bias spring and the reset of the Valve closing body and the valve needle by means of one of them independent return spring.
- the Translation device a force redirection between the Translator piston and the valve needle.
- the Translation device advantageously comprises the translation device a housing body with an inner recess, in which of the booster pistons is displaceable.
- the Housing body is from the valve needle or one Coupling piece enclosed, being between the booster piston and the housing body an inner chamber and between the valve needle or the coupling piece and the Housing body are formed an outer chamber are communicating with each other. In this way is a particularly compact translation facility formed, which is particularly low in manufacturing costs can be made.
- Fuel injector Preferably takes place as a hydraulic medium for the Translation device in the fuel injector guided and by the fuel injector fuel to be used.
- Fuel injector no special hydraulic Medium, for example a hydraulic oil, that leak through leakage over time could. Rather, it becomes quasi-static through management columns Fuel as hydraulic medium automatically continuously refilled.
- the fuel injector is suitable especially for direct fuel injection, especially of gasoline, preferably in the combustion chamber mixture-compressing, spark-ignited internal combustion engine.
- the fuel injector 1 has a housing that from a first housing body 2 and a second Housing body 3 is made.
- a valve closing body 4 is in the Embodiment in one piece with a valve needle 5 trained and acts with one on a valve seat support 6 trained valve seat 7 to a sealing seat together.
- the valve seat support 6 is between one Clamping nut 8 and the second housing body 3 clamped.
- the valve closing body 4 is by means of a return spring 9 biased against the valve seat surface 7.
- the one to be sprayed by the fuel injector 1 Fuel flows in via a fuel inlet connection 11 and via one provided in the second housing body 3 Fuel line 12 and a subsequent, in the valve seat support 6 provided further fuel line 13 into a recess 14 of the valve seat carrier 6. From the Recess 14 the fuel continues to flow upstream of the valve closing body 4 provided swirl grooves 15, which serve to better distribute the fuel to which through the valve closing body 4 and the valve seat surface 7 formed sealing seat.
- valve needle 5 and the Valve closing body 4 takes place via a piezoelectric Actuator 16, which is tubular.
- a piezoelectric actuator 16 can in the same A magnetostrictive actuator can also be used.
- the piezoelectric actuator 16 consists of a large number of stacked piezoelectric ceramic disks. These ceramic discs are each provided with electrodes and so by means of a connector 17 supplyable electrical voltage that can be applied the actuator 16 when actuated with the electrical voltage contracts.
- the connector 17 can as Plastic injection molded part on the first housing body 2 molded and via a connecting line 20 with the Actuator 16 can be connected.
- the actuator 16 is between the second housing body 2 and a flange 18, in Embodiment with the interposition of an intermediate washer 21 clamped and by means of a bias spring 22 biased.
- the bias of the bias spring 22 is in Embodiment adjustable by means of an adjusting screw 23.
- the actuator 16, the intermediate washer 21, the flange 18 and the bias spring 22 are within one Longitudinal bore 24 of the first housing body 2.
- the actuator 16 is preferably with the second housing body 3 and Intermediate washer 21 glued.
- the Translator piston 19 extends through an axial Longitudinal opening 26 of the tubular actuator 16 through and up to a translation device 27 extended.
- the translation device 27 consists of a hydraulic chamber 28 which is filled with a hydraulic medium, in the embodiment with the over the fuel inlet nozzle 11 and the fuel lines 12, 13 supplied Fuel that is filled.
- the translation piston 19 instructs its end projecting into the hydraulic chamber 28 an area A1, while the valve needle 5 at its in the hydraulic chamber 28 projecting end face a surface A2 has.
- the area A2 of the valve needle 5 is smaller than that Area A1 of the booster piston 19.
- the actuator 16 When the actuator 16 is actuated, it contracts and transmits this movement via the flange 18 to the Translator piston 19, the downward in Fig. 1 in the direction is moved to the valve closing body 4. That through in the hydraulic chamber 28 displaced volume of hydraulic medium causes a displacement of the Valve needle 5 also in Fig. 1 down towards the valve closing body 4. However, since the area A2 of the Valve needle 5 is smaller than the area A1 of the Booster piston 19, is on the valve needle 5th transferred stroke larger than that of the translator piston 19th exerted stroke. The valve closing body 4 lifts from the Valve seat surface 7 and releases the sealing seat, so that Fuel is sprayed.
- the use of the fuel is particularly advantageous at the same time as a hydraulic medium for the translation device 27. This ensures that by possible leakage of hydraulic medium is continuously refilled.
- the refill takes place quasi-statically via a Guide gap between the valve needle 5 and the second Housing body 3 from one in the recess 14 of the Valve seat support 16 formed fuel reservoir.
- the leadership gap between the Valve needle 5 and the second housing body 3 so low is dimensioned that the hydraulic medium or Fuel when the fuel injector is actuated and the resulting pressurization of the hydraulic chamber 28 not or only negligibly this leadership gap escapes.
- Fig. 2 shows a longitudinal section through a Embodiment of a fuel injector according to the invention 1, which is also preferably for direct Injecting fuel, especially gasoline, into the Combustion chamber of a mixture-compressing, spark-ignition internal combustion engine serves.
- 3 shows section III in Fig. 2.
- Fuel injector 1 by an outward opening Fuel injector 1 is in FIG. 2 shown fuel injector an inside opening fuel injector 1.
- the valve closing body 4 is therefore related to that on the valve seat support 6 provided valve seat 7 arranged on the inside and forms a sealing seat with the valve seat 7, which in the closed position of the fuel injector 1 closes a spray opening 40.
- the valve closing body 4 and the valve needle 5 formed in one piece therewith is biased by the return spring 9.
- the Return spring 9 is in the embodiment between the second housing body 3 and one on a thickening 41 the valve needle 5 clamped flange 10.
- tubular actuator 16 is also in the shown in Fig. 2 embodiment of the Translator piston 19 penetrated.
- a third housing body 42 is via a thread 43 with the first housing body 2 screwed and thus rigidly fixed. Between the third Housing body 42 and the booster piston 19 is one Inner chamber 44 formed, the holes 45 with a Outer chamber 46 is connected. The outer chamber 46 is between a third housing body 42, with the valve needle 5 by means of a weld seam 47 connected coupling piece 48 and the third housing body 3 formed.
- a refill space 49 serves for the translation device 27, the one over a longitudinal bore 50 and one over a transverse bore 51 connected to that in the fuel inlet connection 11 Recess 14 is connected and thus with fuel corresponding to that on the fuel inlet port 11 prevailing inlet pressure is filled.
- the refill of the Outer chamber 46 and the inner chamber 44 of the translation device 27 takes place via a guide gap between the Coupling piece 48 and the third housing body 42 also quasi-static.
- the invention is not based on the illustrated Embodiment limited and also with a variety other designs of fuel injection valves 1 can be realized.
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)
Description
- Fig. 1
- einen axialen Schnitt durch ein Beispiel eines Brennstoffeinspritzventils gemäß dem Stand der Technik;
- Fig. 2
- einen axialen Schnitt durch ein Ausführungsbeispiel eines erfindungsgemäßen Brennstoffeinspritzventil; und
- Fig. 3
- eine vergrößerte Darstellung des Ausschnitts III in Fig. 2.
Claims (5)
- Brennstoffeinspritzventil (1), insbesondere Einspritzventil für Brennstoffeinspritzanlagen von Brennkraftmaschinen, mit einem piezoelektrischen oder magnetostriktiven Aktor (16), und einem von dem Aktor (16) mittels einer Ventilnadel (5) betätigbaren Ventilschließkörper (4), der mit einer Ventlisitzflache (7) zu einem Dichtsitz zusammenwirkt, wobei der Aktor (16) rohrförmig ausgebildet ist, mit einer zwischen dem Aktor (16) und der Ventilnadel (5) vorgesehenen, ein hydraulisches Medium aufweisenden Übersetzungseinrichtung (27), und mit einem als Betätigungselement auf die Übersetzungseinrichtung (27) einwirkenden Übersetzerkolben (19), wobei der Aktor (16) den Übersetzerkolben (19) umschließt:, und wobei das Brennstoffeinspritzventil (1) als ein nach innen öffnendes Brennstoffeinspritzventil (1) ausgeführt ist,
dadurch gekennzeichnet, daß die Übersetzungseinrichtung (27) derart gestaltet ist, daß eine Kraftumlenkung zwischen dem Übersetzerkolben (19) und der Ventilnadel (5) bewirkt wird, wobei während der Betätigung des Aktors (16) die Bewegungsrichtungen des Übersetzerkolbens (19) und der Ventilnadel (5) entgegengesetzt sind. - Brennstoffeinspritzventil nach Anspruch 1,
dadurch gekennzeichnet, daß die Überserzungseinrichtung (27) einen Gehäusekörper (42) mit einer inneren Ausnehmung, in welcher der Übersetzerkolben (19) verschiebbar ist, aufweist, wobei der Gehäusekörper (42) von der ventilnadel (5) oder einem mit der Ventilnadel (5) verbundenen Kupplungsstück (48) umschlossen ist, und daß zwischen dem Übersetzerkolben (19) und dem Gehäusekörper (42) eine Innenkammer (44) und zwischen der Ventilnadel (5) oder dem Kupplungsstück (48) und dem Gehäusekörper (42) eine mit der Innenkammer (44) verbundene Außenkammer (46) gebildet sind. - Brennstoffeinspritzventil nach Anspruch 1 oder 2,
dadurch gekennzeichnet, daß der Übersetzerkolben (19) an einem dem Dichtsitz abgewandten Ende einen Flansch (19) aufweist, an welchem sich der Aktor (16) abstützt. - Brennstoffeinspritzventil nach Anspruch 3,
dadurch gekennzeichnet, daß eine Vorspannung des Aktors (16) mittels einer auf den Flansch (19) des Übersetzerkolbens (19) einwirkenden Vorspannfeder (22) und eine Rückstellung des Ventilschließkörpers (4) mittels einer auf die Ventilnadel (5) einwirkenden Rückstellfeder (9) erfolgt. - Brennstoffeinspritzventil nach einem der Ansprüche 1 bis 4,
dadurch gekennzeichnet, daß das hydraulische Medium der Übersetzungseinrichtung (27) in dem Brennstoffeinspritzventil (1) geführter Brennstoff ist.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19843535 | 1998-09-23 | ||
DE19843535A DE19843535A1 (de) | 1998-09-23 | 1998-09-23 | Brennstoffeinspritzventil |
PCT/DE1999/000864 WO2000017509A1 (de) | 1998-09-23 | 1999-03-24 | Brennstoffeinspritzventil |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1115971A1 EP1115971A1 (de) | 2001-07-18 |
EP1115971B1 true EP1115971B1 (de) | 2004-08-11 |
Family
ID=7881906
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99923386A Expired - Lifetime EP1115971B1 (de) | 1998-09-23 | 1999-03-24 | Brennstoffeinspritzventil |
Country Status (6)
Country | Link |
---|---|
US (1) | US6561436B1 (de) |
EP (1) | EP1115971B1 (de) |
JP (1) | JP4309589B2 (de) |
AT (1) | ATE273448T1 (de) |
DE (2) | DE19843535A1 (de) |
WO (1) | WO2000017509A1 (de) |
Families Citing this family (23)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4079578B2 (ja) * | 2000-06-22 | 2008-04-23 | 株式会社日本自動車部品総合研究所 | 燃料噴射装置 |
DE10039218A1 (de) * | 2000-08-11 | 2002-02-28 | Bosch Gmbh Robert | Piezoelektrische Aktuatoranordnung, inbesondere zur Betätigung eines Ventils in einem Kraftfahrzeug |
JP2002119075A (ja) * | 2000-10-03 | 2002-04-19 | Matsushita Electric Ind Co Ltd | アクチュエータ装置 |
DE10137210B4 (de) * | 2001-07-30 | 2011-04-07 | Robert Bosch Gmbh | Brennstoffeinspritzventil |
WO2003065468A2 (de) * | 2002-02-01 | 2003-08-07 | Siemens Aktiengesellschaft | Verfahren zum vorbehandeln einer piezoelektrischen keramik und verfahren zum justieren eines einspritzventils |
US7118783B2 (en) * | 2002-06-26 | 2006-10-10 | Micron Technology, Inc. | Methods and apparatus for vapor processing of micro-device workpieces |
DE10310790A1 (de) * | 2003-03-12 | 2004-09-23 | Robert Bosch Gmbh | Brennstoffeinspritzventil |
DE102004005452B4 (de) * | 2004-02-04 | 2014-01-09 | Robert Bosch Gmbh | Düsenhalterkombination mit direktgesteuertem Einspritzventilglied |
DE602004030419D1 (de) * | 2004-02-27 | 2011-01-20 | Continental Automotive Italy S P A | Flüssigkeitsinjektor |
EP1574705B1 (de) * | 2004-02-27 | 2006-12-27 | Siemens VDO Automotive S.p.A. | Flüssigkeitseinspritzventil |
DE102004027824A1 (de) * | 2004-06-08 | 2006-01-05 | Robert Bosch Gmbh | Kraftstoffinjektor mit variabler Aktorübersetzung |
DE102004028522A1 (de) * | 2004-06-11 | 2005-12-29 | Robert Bosch Gmbh | Kraftstoffinjektor mit variabler Aktorhubübersetzung |
DE102004028885A1 (de) * | 2004-06-15 | 2006-01-05 | Robert Bosch Gmbh | Kraftstoffeinspritzventil |
DE102004044461A1 (de) * | 2004-09-15 | 2006-03-30 | Robert Bosch Gmbh | Einspritzdüse |
DE102005012929A1 (de) * | 2005-03-21 | 2006-09-28 | Robert Bosch Gmbh | Kraftstoffinjektor mit direkter Steuerung des Einspritzventilglieds und variabler Übersetzung |
JP4412241B2 (ja) * | 2005-06-15 | 2010-02-10 | 株式会社デンソー | 燃料噴射弁 |
ATE511014T1 (de) * | 2006-03-20 | 2011-06-15 | Delphi Tech Holding Sarl | Dämpfungsanordnung für ein einspritzventil |
US7717132B2 (en) * | 2006-07-17 | 2010-05-18 | Ford Global Technologies, Llc | Hydraulic valve actuated by piezoelectric effect |
JP4529971B2 (ja) * | 2006-12-21 | 2010-08-25 | 株式会社デンソー | 燃料噴射弁 |
ATE464470T1 (de) * | 2007-04-30 | 2010-04-15 | Magneti Marelli Spa | KRAFTSTOFFEINSPRITZVENTIL MIT SICH NACH AUßEN ÖFFNENDEM VENTIL |
US8459577B2 (en) * | 2008-07-08 | 2013-06-11 | Caterpillar Inc. | Decoupled valve assembly and fuel injector using same |
US8464750B1 (en) | 2010-06-30 | 2013-06-18 | The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Magnetostrictive pressure regulating system |
KR101386671B1 (ko) * | 2012-11-29 | 2014-04-21 | 인지컨트롤스 주식회사 | 피에조밸브 및 이를 위한 제조방법 |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3995813A (en) * | 1974-09-13 | 1976-12-07 | Bart Hans U | Piezoelectric fuel injector valve |
US4022166A (en) * | 1975-04-03 | 1977-05-10 | Teledyne Industries, Inc. | Piezoelectric fuel injector valve |
DE2931874C2 (de) * | 1979-08-06 | 1983-08-04 | Audi Nsu Auto Union Ag, 7107 Neckarsulm | Elektrisch betätigbares Ventil |
DE3936619A1 (de) * | 1989-11-03 | 1991-05-08 | Man Nutzfahrzeuge Ag | Verfahren zum einspritzen eines brennstoffes in einen brennraum einer luftverdichtenden, selbstzuendenden brennkraftmaschine, sowie vorrichtungen zur durchfuehrung dieses verfahrens |
DE4306072C2 (de) * | 1993-02-26 | 1994-12-08 | Siemens Ag | Vorrichtung zum Öffnen und Verschließen einer in einem Gehäuse vorhandenen Durchtrittsöffnung |
DE4306073C1 (de) | 1993-02-26 | 1994-06-01 | Siemens Ag | Zumeßvorrichtung für Fluide |
US5482213A (en) * | 1993-05-31 | 1996-01-09 | Aisin Seiki Kabushiki Kaisha | Fuel injection valve operated by expansion and contraction of piezoelectric element |
DE4332124A1 (de) * | 1993-09-22 | 1995-03-23 | Bosch Gmbh Robert | Kraftstoffeinspritzdüse für Brennkraftmaschinen |
DE4422552C1 (de) * | 1994-06-28 | 1995-11-30 | Daimler Benz Ag | Verfahren zum Einspritzen von Kraftstoff in den Brennraum einer Brennkraftmaschine |
DE19500706C2 (de) | 1995-01-12 | 2003-09-25 | Bosch Gmbh Robert | Zumeßventil zur Dosierung von Flüssigkeiten oder Gasen |
JPH09324723A (ja) | 1996-06-03 | 1997-12-16 | Hitachi Ltd | 燃料噴射弁 |
JPH109084A (ja) * | 1996-06-24 | 1998-01-13 | Nissan Motor Co Ltd | 圧電式燃料噴射弁 |
DE19702066C2 (de) | 1997-01-22 | 1998-10-29 | Daimler Benz Ag | Piezoelektrischer Injektor für Kraftstoffeinspritzanlagen von Brennkraftmaschinen |
DE19835494C2 (de) * | 1998-08-06 | 2000-06-21 | Bosch Gmbh Robert | Pumpe-Düse-Einheit |
-
1998
- 1998-09-23 DE DE19843535A patent/DE19843535A1/de not_active Withdrawn
-
1999
- 1999-03-24 US US09/787,967 patent/US6561436B1/en not_active Expired - Fee Related
- 1999-03-24 JP JP2000571132A patent/JP4309589B2/ja not_active Expired - Fee Related
- 1999-03-24 DE DE59910221T patent/DE59910221D1/de not_active Expired - Lifetime
- 1999-03-24 EP EP99923386A patent/EP1115971B1/de not_active Expired - Lifetime
- 1999-03-24 AT AT99923386T patent/ATE273448T1/de not_active IP Right Cessation
- 1999-03-24 WO PCT/DE1999/000864 patent/WO2000017509A1/de active IP Right Grant
Also Published As
Publication number | Publication date |
---|---|
WO2000017509A1 (de) | 2000-03-30 |
DE19843535A1 (de) | 2000-03-30 |
EP1115971A1 (de) | 2001-07-18 |
ATE273448T1 (de) | 2004-08-15 |
JP2002525486A (ja) | 2002-08-13 |
US6561436B1 (en) | 2003-05-13 |
DE59910221D1 (de) | 2004-09-16 |
JP4309589B2 (ja) | 2009-08-05 |
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