DE102007055192A1 - Electromagnetic injection valve for internal-combustion engine e.g. diesel engine, has rigid liner with through-hole that is coaxial to orifice of extremely thin orifice foil, where through-hole has diameter large than that of orifice - Google Patents
Electromagnetic injection valve for internal-combustion engine e.g. diesel engine, has rigid liner with through-hole that is coaxial to orifice of extremely thin orifice foil, where through-hole has diameter large than that of orifice Download PDFInfo
- Publication number
- DE102007055192A1 DE102007055192A1 DE200710055192 DE102007055192A DE102007055192A1 DE 102007055192 A1 DE102007055192 A1 DE 102007055192A1 DE 200710055192 DE200710055192 DE 200710055192 DE 102007055192 A DE102007055192 A DE 102007055192A DE 102007055192 A1 DE102007055192 A1 DE 102007055192A1
- Authority
- DE
- Germany
- Prior art keywords
- hole
- spray
- injection
- film
- orifice
- 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.)
- Withdrawn
Links
- 238000002347 injection Methods 0.000 title claims abstract description 66
- 239000007924 injection Substances 0.000 title claims abstract description 66
- 239000011888 foil Substances 0.000 title abstract description 21
- 238000002485 combustion reaction Methods 0.000 title description 4
- 238000004519 manufacturing process Methods 0.000 claims abstract description 7
- 239000000919 ceramic Substances 0.000 claims abstract description 4
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 3
- 239000010959 steel Substances 0.000 claims abstract description 3
- 239000007921 spray Substances 0.000 claims description 85
- 238000004080 punching Methods 0.000 claims description 13
- 239000002131 composite material Substances 0.000 claims description 10
- 239000012530 fluid Substances 0.000 claims description 9
- 239000002184 metal Substances 0.000 claims description 4
- 230000001154 acute effect Effects 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 2
- 238000003780 insertion Methods 0.000 claims 1
- 230000037431 insertion Effects 0.000 claims 1
- 230000002093 peripheral effect Effects 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 4
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 9
- 239000000446 fuel Substances 0.000 description 7
- 239000000243 solution Substances 0.000 description 6
- WTHDKMILWLGDKL-UHFFFAOYSA-N urea;hydrate Chemical compound O.NC(N)=O WTHDKMILWLGDKL-UHFFFAOYSA-N 0.000 description 5
- 238000000889 atomisation Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- 238000010009 beating Methods 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- BUHVIAUBTBOHAG-FOYDDCNASA-N (2r,3r,4s,5r)-2-[6-[[2-(3,5-dimethoxyphenyl)-2-(2-methylphenyl)ethyl]amino]purin-9-yl]-5-(hydroxymethyl)oxolane-3,4-diol Chemical compound COC1=CC(OC)=CC(C(CNC=2C=3N=CN(C=3N=CN=2)[C@H]2[C@@H]([C@H](O)[C@@H](CO)O2)O)C=2C(=CC=CC=2)C)=C1 BUHVIAUBTBOHAG-FOYDDCNASA-N 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- VZTDIZULWFCMLS-UHFFFAOYSA-N ammonium formate Chemical compound [NH4+].[O-]C=O VZTDIZULWFCMLS-UHFFFAOYSA-N 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 239000003550 marker Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
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
- F02M61/1853—Orifice plates
- F02M61/186—Multi-layered orifice plates
-
- 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
- F02M61/168—Assembling; Disassembling; Manufacturing; Adjusting
-
- 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
- F02M2200/80—Fuel injection apparatus manufacture, repair or assembly
- F02M2200/8069—Fuel injection apparatus manufacture, repair or assembly involving removal of material from the fuel apparatus, e.g. by punching, hydro-erosion or mechanical operation
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
Description
Stand der TechnikState of the art
Die Erfindung geht aus von einem Einspritzventil zum Zerstäuben von Fluid, nach dem Oberbegriff des Anspruchs 1.The The invention is based on an injection valve for atomizing of fluid, according to the preamble of claim 1.
Ein
bekanntes Einspritzventil für Kraftstoffeinspritzanlagen
(
Bei
einer bekannten Vorrichtung zur Abgasnachbehandlung (
Offenbarung der ErfindungDisclosure of the invention
Das erfindungsgemäße Einspritzventil mit den Merkmalen des Anspruchs 1 hat den Vorteil, dass durch die Konzeption der Spritzlochscheibe als Verbund aus einer extrem dünnen, das mindestens eine Spritzloch enthaltenden Folie und mindestens einer steifen Decklage, einerseits die Spritzlochlänge extrem klein ist, so dass das Verhältnis von Spritzlochlänge zum Spritzlochdurchmesser sehr klein gemacht werden kann, und andererseits durch die steife Decklage die Spritzlochscheibe ausreichend stabil ist. Das in der mindestens einen Decklage vorhandene, mit dem Spritzloch koaxiale Durchgangsloch sorgt dafür, dass auf der Ein- und/oder Ausströmseite des Spritzlochs keine strömungsbehindernden oder -beeinflussenden Verhältnisse vorliegen. Darüber hinaus kann die Spritzlochscheibe mit einfachen Fertigungsverfahren, z. B. Stanzen, hergestellt und dabei eine hohe Toleranzgenauigkeit des Spritzlochs sichergestellt werden.The Inventive injection valve with the features of claim 1 has the advantage that by the design of the spray perforated disk as a composite of an extremely thin, the at least one Spray hole containing film and at least one stiff cover layer, On the one hand the spray hole length is extremely small, so that the ratio of spray hole length to spray hole diameter can be made very small, and on the other hand by the stiff Cover layer, the spray disk is sufficiently stable. That in the at least one cover layer existing, with the injection hole coaxial Through hole ensures that on the input and / or Outflow side of the spray hole no flow obstructing or -influential conditions exist. About that In addition, the spray perforated disk can be produced with simple production methods, z. As stamping, manufactured while maintaining a high tolerance accuracy the injection hole can be ensured.
Bei einer Ausführung der Folie mit z. B. 0,04 mm Folienstärke und einer Spritzlocheinstanzung von 0,08 mm wird ein Spritzlochlängen/Spritzlochdurchmesser-Verhältnis von 0,5 erreicht, was zu einer Zerstäubungswolke des aus dem Spritzloch austretenden Fluids mit einer mittleren Tröpfchengröße (SMD = Sauter Mean Diameter) von < 50 μm führt.at an embodiment of the film with z. B. 0.04 mm film thickness and an injection hole punch of 0.08 mm becomes an injection hole length / injection hole diameter ratio of 0.5, resulting in an atomizing cloud of the spray hole escaping fluid having an average droplet size (SMD = Sauter Mean Diameter) of <50 μm leads.
Durch die in den weiteren Ansprüchen aufgeführten Maßnahmen sind vorteilhafte Weiterbildungen und Verbesserungen des im Anspruch 1 angegebenen Einspritzventils möglich.By the measures listed in the further claims are advantageous developments and improvements of the claim 1 specified injection valve possible.
Gemäß einer vorteilhaften Ausführungsform der Erfindung ist die Spritzlochfolie zwischen der steifen, vorzugsweise aus stanzbarem Blech hergestellten Decklage und dem Ventilsitzkörper geklemmt. Dies hat den Vorteil, dass die Gesamtstärke der Spritzlochscheibe bei ausreichender Stabilität sehr klein gemacht, z. B. in einer Gesamtstärke von weniger als 0,2 mm gehalten werden kann.According to one advantageous embodiment of the invention is the spray-hole film between the stiff, preferably made of stampable sheet metal Cover layer and the valve seat body clamped. This has the Advantage that the overall strength of the spray perforated disc at sufficient stability made very small, z. B. in one Total thickness of less than 0.2 mm can be maintained.
Gemäß einer bevorzugten Ausführungsform der Erfindung weist der Verbund eine zweite steife Decklage auf, die ein zum Spritzloch koaxiales Durchgangsloch mit gegenüber dem Spritzloch deutlich größerem Lochdurchmesser aufweist, wobei die Spritzlochfolie zwischen den beiden Decklagen mit zu den Durchgangslöchern koaxialem mindestens einen Spritzloch gehalten ist. Dies hat den Vorteil, dass die Spritzlochscheibe als komplette Baueinheit in die Ventilmontage eingeführt werden kann und Spritzlochfolie und Decklagen nicht erst während der Montage zueinander ausgerichtet werden müssen. Außerdem ergibt sich eine größere Steifigkeit der Spritzlochscheibe, so dass die Lochscheibe auch als sog. S-Schlagscheibe mit in Strömungsrichtung vorgeordnetem Strömungsspalt eingesetzt werden kann, bei der eine sehr gute Gleichverteilung auf mehrere Spritzlöcher gewährleistet ist. Durch die gegenüber dem Spritzloch deutlich durchmessergrößeren Durchgangslöcher in der der Spritzlochfolie stromaufwärts vorgesetzten zweiten Decklage wird sichergestellt, dass im Einlaufbereich des Fluids keine Drosselung stattfindet, sondern diese erst im Spritzloch selbst erfolgt.According to a preferred embodiment of the invention, the composite has a second rigid cover layer which has a through hole coaxial with the injection hole with respect to the injection hole significantly larger hole diameter, the spray film is held between the two cover layers coaxial with the through holes at least one injection hole. This has the advantage that the spray perforated disk can be introduced as a complete unit in the valve assembly and sprayed film and cover layers need not be aligned with each other during assembly. In addition, there is a greater rigidity of the spray perforated disk, so that the perforated disc can also be used as a so-called. S-beating disk with upstream in the flow direction flow gap, in which a very good uniform distribution is guaranteed to multiple spray holes. By opposite the injection hole significantly larger diameter through holes in the spray hole film stream Upwardly superior second cover layer ensures that no throttling takes place in the inlet region of the fluid, but this takes place only in the injection hole itself.
Gemäß einer vorteilhaften Ausführungsform der Erfindung kann die Spritzlochfolie zwischen den beiden Decklagen geklemmt oder aber auch gekammert sein, wozu im letzteren Fall die beiden Decklagen die Spritzlochfolie randseitig übergreifen und die umlaufenden Übergreifungsränder der beiden Decklagen aneinanderliegen und miteinander verbunden, z. B. verschweißt, sind.According to one advantageous embodiment of the invention, the spray-hole film clamped between the two cover layers or chambered be, in the latter case, the two cover layers, the spray film overlap at the edge and the circumferential overlap edges the two cover layers abut each other and connected to each other, for. B. welded, are.
Gemäß einem bevorzugten Verfahren wird die Spritzlochscheibe in der Weise hergestellt, dass das mindestens eine Spritzloch in der Spritzlochfolie und das mindestens eine Durchgangsloch in der mindestens einen Decklage mit demselben Stanzwerkzeug gestanzt wird, das mindestens einen abgestuften Stanzstempel mit zwei im Durchmesser an den Durchmessern von Spritzloch und Durchgangsloch angepassten Stempelabschnitten aufweist. Die Spritzlochfolie und die Decklage werden nacheinander gestanzt, wobei bei jedem Stanzvorgang vom Stanzwerkzeug eine Markierung in die Spritzlochfolie bzw. in die Decklage eingebracht wird. Spritzlochfolie und Decklagen werden mit deckungsgleichen Markierungen aufeinandergelegt und miteinander fest verbunden. Dieses Herstellungsverfahren hat den Vorteil, dass die Löcher in der Spritzlochfolie und in der mindestens einen Decklage exakt übereinanderliegen. Das Spritzloch in der Spritzlochfolie kann jede beliebige Form aufweisen und das Durchgangsloch in der Decklage wird vorzugsweise kreisrund gestanzt.According to one preferred method, the spray perforated disc is made in the manner that the at least one spray hole in the spray film and the at least one through hole in the at least one cover layer is punched with the same punch that at least one graduated punch with two in diameter at the diameters from injection hole and through hole adapted stamp sections having. The spray film and the cover layer are successively stamped, with each punching process from the punch a mark is introduced into the spray film or in the cover layer. Spray hole foil and Cover layers are stacked with congruent markings and firmly connected. This manufacturing process has the advantage that the holes in the spray-hole foil and exactly superimposed in the at least one cover layer. The injection hole in the spray-hole film can have any desired shape and the through hole in the cover sheet is preferably circular punched.
Kurze Beschreibung der ZeichnungenBrief description of the drawings
Die Erfindung ist anhand von in den Zeichnungen dargestellten Ausführungsbeispielen in der nachfolgenden Beschreibung näher erläutert. Es zeigen:The The invention is based on embodiments shown in the drawings explained in more detail in the following description. Show it:
Das
in
Das
im Ausführungsbeispiel elektromagnetisch betätigte
Einspritzventil weist ein Ventilgehäuse
Zum
Feinzerstäuben der ausgespritzten Kraftstoffmenge ist dem
Ventilsitzkörper
Die
in
Die
Spritzlöcher
Die
in
Das
in
Bei
der Herstellung der Spritzlochscheibe
In
der schematisierten Darstellung der
ZITATE ENTHALTEN IN DER BESCHREIBUNGQUOTES INCLUDE IN THE DESCRIPTION
Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.
Zitierte PatentliteraturCited patent literature
- - DE 102005061424 A1 [0002] DE 102005061424 A1 [0002]
- - DE 102004004738 A1 [0003] - DE 102004004738 A1 [0003]
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE200710055192 DE102007055192A1 (en) | 2007-11-19 | 2007-11-19 | Electromagnetic injection valve for internal-combustion engine e.g. diesel engine, has rigid liner with through-hole that is coaxial to orifice of extremely thin orifice foil, where through-hole has diameter large than that of orifice |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE200710055192 DE102007055192A1 (en) | 2007-11-19 | 2007-11-19 | Electromagnetic injection valve for internal-combustion engine e.g. diesel engine, has rigid liner with through-hole that is coaxial to orifice of extremely thin orifice foil, where through-hole has diameter large than that of orifice |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE102007055192A1 true DE102007055192A1 (en) | 2009-05-20 |
Family
ID=40560815
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE200710055192 Withdrawn DE102007055192A1 (en) | 2007-11-19 | 2007-11-19 | Electromagnetic injection valve for internal-combustion engine e.g. diesel engine, has rigid liner with through-hole that is coaxial to orifice of extremely thin orifice foil, where through-hole has diameter large than that of orifice |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE102007055192A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013049867A1 (en) | 2011-10-05 | 2013-04-11 | Kurt Himmelfreundpointner | Method and device for influencing the smell which comes from shaft openings of underground sewers |
| CN110953044A (en) * | 2018-09-27 | 2020-04-03 | 昆山瑞泽汽车部件有限公司 | A porous urea nozzle and its atomization structure |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102004004738A1 (en) | 2004-01-30 | 2005-08-18 | Robert Bosch Gmbh | Method and device for the after-treatment of an exhaust gas of an internal combustion engine |
| DE102005061424A1 (en) | 2005-12-22 | 2007-07-05 | Robert Bosch Gmbh | Fuel injection valve for internal combustion engine, has movable actuating part with valve seat body including saw-tooth structure at outer periphery to provide firm connection with valve seat carrier |
-
2007
- 2007-11-19 DE DE200710055192 patent/DE102007055192A1/en not_active Withdrawn
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102004004738A1 (en) | 2004-01-30 | 2005-08-18 | Robert Bosch Gmbh | Method and device for the after-treatment of an exhaust gas of an internal combustion engine |
| DE102005061424A1 (en) | 2005-12-22 | 2007-07-05 | Robert Bosch Gmbh | Fuel injection valve for internal combustion engine, has movable actuating part with valve seat body including saw-tooth structure at outer periphery to provide firm connection with valve seat carrier |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013049867A1 (en) | 2011-10-05 | 2013-04-11 | Kurt Himmelfreundpointner | Method and device for influencing the smell which comes from shaft openings of underground sewers |
| CN110953044A (en) * | 2018-09-27 | 2020-04-03 | 昆山瑞泽汽车部件有限公司 | A porous urea nozzle and its atomization structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R005 | Application deemed withdrawn due to failure to request examination | ||
| R005 | Application deemed withdrawn due to failure to request examination |
Effective date: 20141120 |