EP1045982B1 - Fuel injection nozzle for internal combustion engines with self-ignition - Google Patents
Fuel injection nozzle for internal combustion engines with self-ignition Download PDFInfo
- Publication number
- EP1045982B1 EP1045982B1 EP99947222A EP99947222A EP1045982B1 EP 1045982 B1 EP1045982 B1 EP 1045982B1 EP 99947222 A EP99947222 A EP 99947222A EP 99947222 A EP99947222 A EP 99947222A EP 1045982 B1 EP1045982 B1 EP 1045982B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- internal combustion
- fuel
- fuel injection
- valve seat
- spray hole
- 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 description 40
- 238000002485 combustion reaction Methods 0.000 title claims description 14
- 238000002347 injection Methods 0.000 title claims description 14
- 239000007924 injection Substances 0.000 title claims description 14
- 239000007921 spray Substances 0.000 claims description 23
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000009760 electrical discharge machining Methods 0.000 description 2
- 238000000889 atomisation Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000149 penetrating 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
- 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
- F02M61/18—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for
- F02M61/1806—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for characterised by the arrangement of discharge orifices, e.g. orientation or size
- F02M61/182—Discharge orifices being situated in different transversal planes with respect to valve member direction of movement
-
- 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
- F02M61/18—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for
-
- 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
- F02M61/18—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for
- F02M61/1806—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for characterised by the arrangement of discharge orifices, e.g. orientation or size
- F02M61/1833—Discharge orifices having changing cross sections, e.g. being divergent
Definitions
- the invention relates to a fuel injector for Self-igniting internal combustion engines of the genus Claim 1.
- Such fuel injectors are, for example from DE 43 03 813 C1 and from the book publication: Bosch automotive paperback 22nd edition, 1995, pages 526 ff.
- a fuel injection nozzle is known from document EP 809017 A1, the spray holes, which has a constricting area and have a widening area, these two Areas are connected by a cylindrical section. spiracles in this form, however, have the disadvantage that the implementation the fuel pressure at a speed not optimal he follows.
- a fuel injection valve is from document DE-OS 2557772 known to have injection ports through which Fuel is injected into the combustion chamber of the internal combustion engine becomes.
- the injection openings narrow from the inlet cross section to a narrowest cross section and then expand again in essentially conical up to the outlet cross section.
- the narrowest cross section is, however, arranged near the inlet opening, so that here too the disadvantage occurs that the fuel pressure is not optimal can be converted into a speed and thus an optimal one Atomization is not guaranteed.
- the object of the invention is to develop a fuel injection nozzle of the type described in the introduction in such a way that its efficiency in converting the fuel pressure into a speed of the fuel jet fed in and thereby the efficiency of the distribution of the fuel in the engine are increased.
- the fuel injection nozzle is also intended to reduce NO x and particle values.
- the spray hole cross section to the combustion chamber becomes particularly simple Way an optimal conversion of the pressure into a speed of the fuel jet and thus a high one Efficiency in the distribution of the fuel in the Internal combustion engine reached. While in the convergent Fuel injector area higher speeds will be generated in their divergent Part of creating a spray with small particles allows. This will be advantageous a shift in the range of maximum distribution away from the fuel injector due to higher Fuel jet speeds at fuel injector known from the prior art occurs through the divergent part of the Counteracted fuel injector. By an optimal Conversion of the pressure of the fuel jet into its speed also becomes the tendency to cavitation reduced.
- the smallest spray hole cross section extends in an advantageous manner in axially central area of the spray hole opening, so that the divergent and the convergent spray hole area have approximately the same axial extent.
- the Spray holes advantageously have one of the following Cross-sectional shapes on: a circular shape, one elliptical shape, a slit-like shape.
- a nozzle body 10 has a bore 12, the Reason in a crest 13 at the injection end conical valve seat surface 14 is formed.
- valve seat surface 14 from which the tip 13 penetrating spray holes 20 opening into the combustion chamber a correspondingly shaped closing cone acts 31 together at the tip of a valve needle 30.
- the of a (not shown) closing spring loaded valve needle 30 has one in the input area of the Nozzle body 10 slidably guided guide section as well as a pressure shoulder in the Diameter stepped section, at its free Walls of the closing cone 31 are formed.
- the next section the nozzle needle 30 has a smaller thickness than the width of the surrounding bore 12 so that it is a Annular gap surrounds the height in a manner known per se the pressure shoulder to one with a feed hole connected chamber (not shown) expanded is.
- the spray hole 20 has one towards the combustion chamber of the internal combustion engine after the initial narrowing expanding cross-section.
- a convergent part 21 is followed by a divergent part 22.
- the spray hole 20 in this respect has the shape of a "Laval nozzle".
- a Laval nozzle in the convergent area 21 the fuel injector at higher speeds of the fuel jet to be injected, whereas in the divergent part of the nozzle the generation of a Sprays with small particles are created.
- An unwanted one Shift the range of the maximum distribution away from the nozzle due to the higher speed the fuel injection part is thus by means of the divergent Part 22 of the fuel injector counteracted.
- the resulting "gentler" implementation the pressure of the fuel injection jet into its Speed reduces the tendency to cavitate Fuel injector.
- Such a fuel injector can be very advantageously produced by spark erosion, the variation in the cross-sectional shape of the Spray hole 20 in a simple manner by varying the Parameters voltage, current and feed rate can be manufactured.
- the cost of production such a spray hole 20 can be smaller be than conical known from the prior art Spray holes where the inlet cross section is larger than the outlet cross section. Because the entry openings in known from the prior art In many cases, additional fuel injectors hydroerosively rounded, the cost of manufacturing one with spray holes 20 described above equipped fuel injector even reduced as the time to round the entry openings reduced or the process can be omitted.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
Description
Die Erfindung betrifft eine Kraftstoffeinspritzdüse für selbstzündende Brennkraftmaschinen nach der Gattung des Anspruchs 1.The invention relates to a fuel injector for Self-igniting internal combustion engines of the genus Claim 1.
Derartige Kraftstoffeinspritzdüsen sind beispielsweise aus der DE 43 03 813 C1 sowie aus der Buchveröffentlichung: Bosch Kraftfahrtechnisches Taschenbuch 22. Auflage, 1995, Seiten 526 ff bekannt.Such fuel injectors are, for example from DE 43 03 813 C1 and from the book publication: Bosch automotive paperback 22nd edition, 1995, pages 526 ff.
Bei derartigen Kraftstoffeinspritzdüsen sind die Spritzlöcher zylindrisch ausgebildet. Die Umsetzung des Kraftstoffdrucks in eine Geschwindigkeit des eingespritzten Kraftstoffstrahls geschieht dabei innerhalb eines kleinen Bereiches, wodurch hohe Wirkungsgradverluste entstehen. With such fuel injection nozzles Spray holes cylindrical. Implementation of the Fuel pressure injected at a speed The fuel jet happens inside of a small area, resulting in high efficiency losses arise.
Aus dem Dokument EP 809017 A1 ist eine Kraftstoffeinspritzdüse bekannt, die Spritzlöcher aufweist, die einen verengenden Bereich und einen sich wieder erweiternden Bereich aufweisen, wobei diese beiden Bereiche durch einen zylindrischen Abschnitt verbunden sind. Spritzlöcher in dieser Form weisen jedoch den Nachteil auf, dass die Umsetzung des Kraftstoffdrucks in eine Geschwindigkeit nicht optimal erfolgt.A fuel injection nozzle is known from document EP 809017 A1, the spray holes, which has a constricting area and have a widening area, these two Areas are connected by a cylindrical section. spiracles in this form, however, have the disadvantage that the implementation the fuel pressure at a speed not optimal he follows.
Darüber hinaus ist aus dem Dokument DE-OS 2557772 ein Kraftstoffeinspritzventil bekannt, dass Einspritzöffnungen aufweist, durch die Kraftstoff in den Brennraum der Brennkraftmaschine eingespritzt wird. Die Einspritzöffnungen verengen sich vom Eintrittsquerschnitt bis zu einem engsten Querschnitt und erweitern sich dann wieder im wesentlichen konisch bis zum Austrittsquerschnitt. Der engste Querschnitt ist jedoch nahe der Eintrittsöffnung angeordnet, so dass auch hier der Nachteil auftritt, dass der Kraftstoffdruck nicht optimal in eine Geschwindigkeit umgesetzt werden kann und so eine optimale Zerstäubung nicht gewährleistet ist. In addition, a fuel injection valve is from document DE-OS 2557772 known to have injection ports through which Fuel is injected into the combustion chamber of the internal combustion engine becomes. The injection openings narrow from the inlet cross section to a narrowest cross section and then expand again in essentially conical up to the outlet cross section. The narrowest cross section is, however, arranged near the inlet opening, so that here too the disadvantage occurs that the fuel pressure is not optimal can be converted into a speed and thus an optimal one Atomization is not guaranteed.
Aufgabe der Erfindung ist es, eine Kraftstoffeinspritzdüse der eingangs beschriebenen Art derart weiterzubilden, daß ihr Wirkungsgrad bei der Umsetzung des Kraftstoffdrucks in eine Geschwindigkeit des eingespeisten Kraftstoffstrahls und dadurch der Wirkungsgrad der Verteilung des Kraftstoffs im Motor erhöht werden. Durch die Kraftstoffeinspritzdüse sollen auch NOx und Partikelwerte reduziert werden.The object of the invention is to develop a fuel injection nozzle of the type described in the introduction in such a way that its efficiency in converting the fuel pressure into a speed of the fuel jet fed in and thereby the efficiency of the distribution of the fuel in the engine are increased. The fuel injection nozzle is also intended to reduce NO x and particle values.
Diese Aufgabe wird bei einer Kraftstoffeinspritzdüse für selbstzündenderennkraftmaschinen der gattungsgemäßen Art mit den Merkmalen des Anspruchs 1 gelöst.This task is done with a fuel injector for auto-ignition internal combustion engines of the generic type Kind with the features of claim 1 solved.
Dadurch, daß sich der Spritzlochquerschnitt zum Brennraum der Brennkraftmaschine nach einer anfänglichen Verengung wieder erweitert, wird auf besonders einfache Weise eine optimale Umsetzung des Drucks in eine Geschwindigkeit des Kraftstoffstrahls und damit ein hoher Wirkungsgrad bei der Verteilung des Kraftstoffs in der Brennkraftmaschine erreicht. Während nämlich im konvergenten Bereich der Kraftstoffeinspritzdüse höhere Geschwindigkeiten erzeugt werden, wird in ihrem divergenten Teil die Erzeugung eines Sprays mit kleinen Partikeln ermöglicht. Hierdurch wird auf vorteilhafte Weise einer Verschiebung des Bereichs der maximalen Verteilung weg von der Kraftstoffeinspritzdüse aufgrund höherer Geschwindigkeiten des Kraftstoffstrahls, die bei aus dem Stand der Technik bekannten Kraftstoffeinspritzdüse auftritt, durch den divergenten Teil der Kraftstoffeinspritzdüse entgegengewirkt. Durch eine optimale Umsetzung des Drucks des Kraftstoffstrahls in seine Geschwindigkeit wird hierdurch auch die Kavitationsneigung vermindert. Der kleinste Spritzlochquerschnitt erstreckt sich dabei in vorteilhafter Weise im axial mittigen Bereich der Spritzlochöffnung, so daß der divergente und der konvergente Spritzlochbereich etwa die gleiche axiale Erstreckung aufweisen.Because the spray hole cross section to the combustion chamber the internal combustion engine after an initial Narrowing again, becomes particularly simple Way an optimal conversion of the pressure into a speed of the fuel jet and thus a high one Efficiency in the distribution of the fuel in the Internal combustion engine reached. While in the convergent Fuel injector area higher speeds will be generated in their divergent Part of creating a spray with small particles allows. This will be advantageous a shift in the range of maximum distribution away from the fuel injector due to higher Fuel jet speeds at fuel injector known from the prior art occurs through the divergent part of the Counteracted fuel injector. By an optimal Conversion of the pressure of the fuel jet into its speed also becomes the tendency to cavitation reduced. The smallest spray hole cross section extends in an advantageous manner in axially central area of the spray hole opening, so that the divergent and the convergent spray hole area have approximately the same axial extent.
Darüber hinaus ist eine solche Kraftstoffeinspritzdüse beispielsweise durch Funkenerosion besonders kostengünstig herzustellen.In addition, such a fuel injector for example, by spark erosion, particularly inexpensive manufacture.
Was die Ausbildung der Spritzlöcher betrifft, so sind die unterschiedlichsten Ausführungsformen denkbar. Die Spritzlöcher weisen vorteilhafterweise eine der folgenden Querschnittsformen auf: eine kreisrunde Form, eine elliptische Form, eine schlitzartige Form.As for the formation of the spray holes, so are the most different embodiments possible. The Spray holes advantageously have one of the following Cross-sectional shapes on: a circular shape, one elliptical shape, a slit-like shape.
Weitere Vorteile und vorteilhafte Ausgestaltungen des Gegenstands der Erfindung sind der Zeichnung, der Beschreibung und den Ansprüchen entnehmbar.Further advantages and advantageous configurations of the The subject of the invention are the drawing, the description and removable from the claims.
In der Zeichnung zeigen:
- Fig. 1
- eine Längsschnittdarstellung des unteren Bereichs eines erfindungsgemäßen Kraftstoffeinspritzventils und
- Fig. 2
- eine in Fig. 1 mit II bezeichnete Detailvergrößerung der in Fig. 1 dargestellten Kraftstoffeinspritzdüse.
- Fig. 1
- a longitudinal sectional view of the lower region of a fuel injection valve according to the invention and
- Fig. 2
- an enlarged in Fig. 1 designated II detail of the fuel injector shown in Fig. 1.
Ein Düsenkörper 10 weist eine Bohrung 12 auf, deren
Grund in einer Kuppe 13 am einspritzsseitigen Ende als
konische Ventilsitzfläche 14 ausgebildet ist.A
Mit dieser Ventilsitzfläche 14, von der die Kuppe 13
durchsetzende und im Brennraum mündende Spritzlöcher 20
ausgehen, wirkt ein entsprechend geformter Schließkegel
31 an der Spitze einer Ventilnadel 30 zusammen. Die von
einer (nicht dargestellten) Schließfeder belastete Ventilnadel
30 hat einen im eingangsseitigen Bereich des
Düsenkörpers 10 verschiebbar geführten Führungsabschnitt
sowie einen daran über eine Druckschulter im
Durchmesser abgesetzten Folgeabschnitt, an dessen freie
Wände der Schließkegel 31 angeformt ist. Der Folgeabschnitt
der Düsennadel 30 hat eine geringere Dicke als
die Weite der umgebenden Bohrung 12, so daß ihn ein
Ringspalt umgibt, der auf an sich bekannte Weise in Höhe
der Druckschulter zu einer mit einer Zuführbohrung
verbundenen (nicht dargestellten) Kammer erweitert
ist.With this
Wie aus Fig. 1 und insbesondere aus Fig. 2 hervorgeht,
weist das Spritzloch 20 einen zum Brennraum der Brennkraftmaschine
sich nach anfänglicher Verengung wieder
erweiternden Querschnitt auf. Einem konvergenten Teil
21 folgt ein divergenter Teil 22. Das Spritzloch 20
weist insofern die Form einer "Laval-Düse" auf. Wie bei
einer Laval-Düse werden in dem konvergenten Bereich 21
der Kraftstoffeinspritzdüse höhere Geschwindigkeiten
des einzuspritzenden Kraftstoffstrahls erzeugt, wohingegen
im divergenten Teil der Düse die Erzeugung eines
Sprays mit kleinen Partikeln entsteht. Eine unerwünschte
Verschiebung des Bereichs der maximalen Verteilung
weg von der Düse aufgrund der höheren Geschwindigkeit
des Kraftstoffeinspritzteils wird somit mittels des divergenten
Teils 22 der Kraftstoffeinspritzdüse entgegengewirkt.
Die hierdurch entstehende "sanftere" Umsetzung
des Drucks des Kraftstoffeinspritzstrahls in seine
Geschwindigkeit reduziert die Kavitationsneigung der
Kraftstoffeinspritzdüse.As can be seen from FIG. 1 and in particular from FIG. 2,
the
Eine derartige Kraftstoffeinspritzdüse kann auf sehr
vorteilhafte Weise durch Funkenerosion hergestellt werden,
wobei die Variation der Querschnittsform des
Spritzlochs 20 auf einfache Weise durch Variation der
Parameter Spannung, Stromstärke und Vorschubgeschwindigkeit
hergestellt werden kann. Die Kosten zur Erzeugung
eines derartigen Spritzlochs 20 können geringer
sein als bei aus dem Stand der Technik bekannten konischen
Spritzlöchern, bei denen der Eintrittsquerschnitt
größer ist als der Austrittsquerschnitt. Da die Eintrittsöffnungen
bei aus dem Stand der Technik bekannten
Kraftstoffeinspritzdüsen in vielen Fällen zusätzlich
hydroerosiv gerundet werden, können die Kosten zur Herstellung
einer mit oben beschriebenen Spritzlöchern 20
ausgestatteten Kraftstoffeinspritzdüse sogar reduziert
werden, da die Zeit zum Runden der Eintrittsöffnungen
reduziert bzw. der Vorgang weggelassen werden kann.Such a fuel injector can be very
advantageously produced by spark erosion,
the variation in the cross-sectional shape of the
Claims (2)
- Fuel injection nozzle for compression-ignition internal combustion engines having a nozzle body (10), in which a conical valve seat face (14) is formed at the injection-side end of a hole (12), and spray holes (20) in the form of Laval nozzles lead from the valve seat face (14), and having a valve needle (30), which opens counter to the direction of flow of the fuel against a closing force, is guided displaceably in the entry region of the bore (12) remote from the injection-side end and on its side facing the valve seat face (14) has a closure cone (31), which interacts with the valve seat face (14), with the spray hole cross section widening out again towards the combustion chamber of the internal combustion engine after having initially narrowed, characterized in that the spray hole region with the smallest cross section in the spray hole (20) is arranged in the centre of the extent of the axial spray hole.
- Fuel injection nozzle according to Claim 1, characterized in that the cross-sectional shape of the spray holes (20) takes one of the following forms: a circular shape, an elliptical shape, a slot-like shape.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19847460 | 1998-10-15 | ||
| DE19847460A DE19847460A1 (en) | 1998-10-15 | 1998-10-15 | Fuel injection valve nozzle with orifice at first converges then diverges to combustion chamber as circular elliptical or slot orifice section. |
| PCT/DE1999/002204 WO2000023707A1 (en) | 1998-10-15 | 1999-07-16 | Fuel injection nozzle for internal combustion engines with self-ignition |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1045982A1 EP1045982A1 (en) | 2000-10-25 |
| EP1045982B1 true EP1045982B1 (en) | 2004-03-24 |
Family
ID=7884510
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP99947222A Expired - Lifetime EP1045982B1 (en) | 1998-10-15 | 1999-07-16 | Fuel injection nozzle for internal combustion engines with self-ignition |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP1045982B1 (en) |
| JP (1) | JP2002527678A (en) |
| KR (1) | KR100627745B1 (en) |
| BR (1) | BR9917602A (en) |
| DE (2) | DE19847460A1 (en) |
| WO (1) | WO2000023707A1 (en) |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10105674A1 (en) * | 2001-02-08 | 2002-08-29 | Siemens Ag | Fuel injection nozzle for an internal combustion engine |
| JP3879909B2 (en) * | 2001-03-29 | 2007-02-14 | 株式会社デンソー | Fuel injection device |
| DE10124745A1 (en) * | 2001-05-21 | 2003-03-27 | Bosch Gmbh Robert | Fuel injector |
| DE10360773A1 (en) * | 2003-12-23 | 2005-07-28 | Robert Bosch Gmbh | Fuel injector |
| DE102004049280A1 (en) * | 2004-10-09 | 2006-04-13 | Robert Bosch Gmbh | Fuel injector |
| KR100742202B1 (en) * | 2005-10-13 | 2007-07-24 | 진명이십일 (주) | Injection nozzle structure of injector |
| DE102006013962A1 (en) * | 2006-03-27 | 2007-10-04 | Robert Bosch Gmbh | Injection nozzle with injection channels and method for introducing channels |
| GB0712403D0 (en) | 2007-06-26 | 2007-08-01 | Delphi Tech Inc | A Spray Hole Profile |
| DE102008051365B4 (en) | 2008-10-15 | 2010-07-01 | L'orange Gmbh | Fuel injection valve for internal combustion engines |
| JP5299293B2 (en) * | 2010-01-19 | 2013-09-25 | 株式会社デンソー | Fuel injection valve and manufacturing method thereof |
| AT511880B1 (en) * | 2011-09-06 | 2013-12-15 | Bosch Gmbh Robert | WEAR-OPTIMIZED MANUFACTURE OF TAPPY SPRAY HOLES |
| EP2884090B1 (en) | 2013-12-11 | 2018-02-21 | Continental Automotive GmbH | Nozzle body and fuel injection valve |
| JP6247167B2 (en) * | 2014-06-24 | 2017-12-13 | トヨタ自動車株式会社 | Processing method of fuel injection valve |
| JP2017106418A (en) * | 2015-12-11 | 2017-06-15 | 株式会社デンソー | Fuel injection valve and its manufacturing method |
| CN110805513B (en) * | 2018-08-05 | 2021-06-01 | 大连理工大学 | Nozzle with torsional elliptical spray holes |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE631135C (en) * | 1934-08-19 | 1936-06-12 | Wanderer Werke Vorm Winklhofer | Process for the production of nozzle inserts assembled from several parts |
| DE2557772A1 (en) * | 1975-12-20 | 1977-06-23 | Kloeckner Humboldt Deutz Ag | FUEL INJECTION VALVE |
| JPH05231273A (en) * | 1992-02-19 | 1993-09-07 | Hino Motors Ltd | Fuel injection nozzle and manufacture thereof |
| EP0809017A1 (en) * | 1996-05-22 | 1997-11-26 | Steyr-Daimler-Puch Aktiengesellschaft | Two-stage fuel injection nozzel for internal combustion engine |
-
1998
- 1998-10-15 DE DE19847460A patent/DE19847460A1/en not_active Withdrawn
-
1999
- 1999-07-16 EP EP99947222A patent/EP1045982B1/en not_active Expired - Lifetime
- 1999-07-16 WO PCT/DE1999/002204 patent/WO2000023707A1/en active IP Right Grant
- 1999-07-16 DE DE59908951T patent/DE59908951D1/en not_active Expired - Lifetime
- 1999-07-16 KR KR1020007006475A patent/KR100627745B1/en not_active Expired - Fee Related
- 1999-07-16 JP JP2000577405A patent/JP2002527678A/en active Pending
- 1999-07-16 BR BR9917602-5A patent/BR9917602A/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| BR9917602A (en) | 2002-10-01 |
| DE19847460A1 (en) | 2000-04-20 |
| WO2000023707A1 (en) | 2000-04-27 |
| DE59908951D1 (en) | 2004-04-29 |
| KR100627745B1 (en) | 2006-09-26 |
| KR20010033112A (en) | 2001-04-25 |
| JP2002527678A (en) | 2002-08-27 |
| EP1045982A1 (en) | 2000-10-25 |
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