DE102010030922A1 - Valve for flowing medium, particularly metering valve for metering freezing liquid, comprises valve chamber, which upstream valve opening, and supply channel, which guides medium to valve chamber - Google Patents
Valve for flowing medium, particularly metering valve for metering freezing liquid, comprises valve chamber, which upstream valve opening, and supply channel, which guides medium to valve chamber Download PDFInfo
- Publication number
- DE102010030922A1 DE102010030922A1 DE102010030922A DE102010030922A DE102010030922A1 DE 102010030922 A1 DE102010030922 A1 DE 102010030922A1 DE 102010030922 A DE102010030922 A DE 102010030922A DE 102010030922 A DE102010030922 A DE 102010030922A DE 102010030922 A1 DE102010030922 A1 DE 102010030922A1
- Authority
- DE
- Germany
- Prior art keywords
- valve
- valve seat
- pot
- seat carrier
- inlet channel
- 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.)
- Pending
Links
- 238000011144 upstream manufacturing Methods 0.000 title claims abstract description 4
- 239000007788 liquid Substances 0.000 title claims description 6
- 230000008014 freezing Effects 0.000 title claims description 4
- 238000007710 freezing Methods 0.000 title claims description 4
- 239000002184 metal Substances 0.000 claims abstract description 4
- 230000006835 compression Effects 0.000 claims description 10
- 238000007906 compression Methods 0.000 claims description 10
- 230000007704 transition Effects 0.000 claims description 3
- 238000007598 dipping method Methods 0.000 claims description 2
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 6
- 239000000446 fuel Substances 0.000 description 6
- 239000007789 gas Substances 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 239000007921 spray Substances 0.000 description 2
- WTHDKMILWLGDKL-UHFFFAOYSA-N urea;hydrate Chemical compound O.NC(N)=O WTHDKMILWLGDKL-UHFFFAOYSA-N 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
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000012533 medium component Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
- F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
- F01N3/2066—Selective catalytic reduction [SCR]
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2610/00—Adding substances to exhaust gases
- F01N2610/02—Adding substances to exhaust gases the substance being ammonia or urea
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2610/00—Adding substances to exhaust gases
- F01N2610/14—Arrangements for the supply of substances, e.g. conduits
- F01N2610/1426—Filtration means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2610/00—Adding substances to exhaust gases
- F01N2610/14—Arrangements for the supply of substances, e.g. conduits
- F01N2610/1453—Sprayers or atomisers; Arrangement thereof in the exhaust apparatus
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2610/00—Adding substances to exhaust gases
- F01N2610/14—Arrangements for the supply of substances, e.g. conduits
- F01N2610/1486—Means to prevent the substance from freezing
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Abstract
Description
Stand der TechnikState of the art
Die Erfindung geht aus von einem Ventil für ein strömendes Medium, insbesondere Dosierventil zum Zumessen einer gefrierfähigen Flüssigkeit, nach dem Oberbegriff des Anspruchs 1.The invention is based on a valve for a flowing medium, in particular a metering valve for metering a freezable liquid, according to the preamble of claim 1.
Ein bekanntes, als Brennstoffeinspritzventil bezeichnetes Ventil zum Zumessen von flüssigem Brenn- oder Kraftstoff in Kraftstoffanlangen für Kraftfahrzeuge (
Ein solches Ventil wird mitunter auch zur Abgasnachbehandlung in Kraftfahrzeugen als Dosierventil zum Einspritzen einer Harnstoff-Wasser-Lösung in das Abgas eingesetzt, um den im Abgas enthaltenen Stickoxidanteil zu reduzieren. Aufgrund des hohen Wasseranteils gefriert die im Betrieb des Kraftfahrzeugs unter Druck stehende Lösung schon bei geringen Temperaturen unter dem Nullpunkt. Dabei hat sich gezeigt, dass der beim Gefrieren der Lösung im Zulaufkanal auftretende axiale Eisdruck den vorzugsweise aus Kunststoff gefertigten Filter zum Reißen bringt.Such a valve is sometimes used for exhaust aftertreatment in motor vehicles as a metering valve for injecting a urea-water solution into the exhaust gas in order to reduce the amount of nitrogen oxide contained in the exhaust gas. Due to the high water content, the solution under pressure during operation of the motor vehicle freezes below zero even at low temperatures. It has been found that the axial ice pressure occurring during freezing of the solution in the inlet channel brings the preferably made of plastic filter to rupture.
Offenbarung der ErfindungDisclosure of the invention
Das erfindungsgemäße Ventil mit den Merkmalen des Anspruchs 1 hat den Vorteil, dass durch die begrenzt axiale Verschiebbarkeit des Filters im Zulaufkanal der Filter dem axialen Eisdruck ausweichen kann und somit kein nennenswerter Druck auf den weniger stabilen Siebteil des Filters wirkt. Damit ist das Ventil auch im Siebbereich ausreichend gegen Eisdruck resistent und somit gefriertauglich.The valve according to the invention with the features of claim 1 has the advantage that due to the limited axial displaceability of the filter in the inlet channel of the filter can avoid the axial ice pressure and thus no significant pressure acts on the less stable screen portion of the filter. Thus, the valve is sufficiently resistant to ice pressure in the sieve area and thus freeze-ready.
Durch die in den weiteren Ansprüchen aufgeführten Maßnahmen sind vorteilhafte Weiterbildungen und Verbesserungen des im Anspruchs 1 angegebenen Ventils möglich.The measures listed in the further claims advantageous refinements and improvements of the claim 1 valve are possible.
Gemäß einer vorteilhaften Ausführungsform der Erfindung stützt sich der Filter an einem im Zulaufkanal angeordneten ersten Anschlag und stützt sich ein elastisch verformbares Element, vorzugsweise eine Druckfeder zwischen dem Filter und einem im Zulaufkanal angeordneten zweiten Anschlag ab. Mittels des elastisch verformbaren Elements bzw. der Druckfeder wird in konstruktiv einfacher Weise erreicht, dass der Filter einerseits im Betrieb des Ventils axial festliegt und andererseits beim Gefrieren des Mediums im Zulaufkanal dem entstehenden axialen Eisdruck durch axiales Verschieben unter Zusammendrücken des Elements bzw. der Druckfeder auszuweichen vermag, so dass die Siebregion des Filters nicht vom axialen Eisdruck belastet ist.According to an advantageous embodiment of the invention, the filter is supported on a first stop arranged in the inlet channel and is supported by an elastically deformable element, preferably a compression spring between the filter and a second stop arranged in the inlet channel. By means of the elastically deformable element or the pressure spring is achieved in a structurally simple manner that the filter axially on the one hand during operation of the valve and on the other hand evade the freezing of the medium in the inlet channel the resulting axial ice pressure by axial displacement under compression of the element or the compression spring able, so that the sieve region of the filter is not burdened by the axial ice pressure.
Gemäß einer vorteilhaften Ausführungsform der Erfindung ist der Filter als Siebtopf mit geschlossenem Topfboden und einem am Siebtopf umlaufenden, radial abstehenden Kragen ausgebildet, an dem die Druckfeder angreift. Mittels des stabil ausführbaren Kragens werden die einander entgegengerichteten Kräfte von auf den Topfboden wirkendem Eisdruck und auf den Kragen wirkender Druckfeder aufgenommen und die relativ empfindliche Siebregion bleibt unbelastet.According to an advantageous embodiment of the invention, the filter is designed as a sieve pot with a closed bottom of the pot and a circumferential on the sieve cup, radially projecting collar on which engages the compression spring. By means of the stable executable collar the opposing forces are absorbed by acting on the pot bottom ice pressure and acting on the collar compression spring and the relatively sensitive screen region remains unloaded.
Gemäß einer vorteilhaften Ausführungsform der Erfindung ist der Siebtopf einstückig aus Kunststoff mit zwei Topfboden und Kragen miteinander verbindenden Längsstegen hergestellt, und ein mit einem Stirnende im Topfboden festgelegter Siebzylinder ist durch die Längsstege hindurchgeführt. Alternativ ist der Siebtopf aus Metall tiefgezogen, und in den Topfmantel des Siebtopfes sind mittels Laser Sieblöcher gebohrt. Mit beiden Ausführungen des Siebtopfs wird mittels dessen axialer Verschiebbarkeit im Zulaufkanal eine Eisdruckfestigkeit des Ventils im Siebbereich erzielt.According to an advantageous embodiment of the invention, the sieve pot is made in one piece from plastic with two pot bottom and collar connecting longitudinal webs, and a fixed with a front end in the bottom of the pot sieve cylinder is passed through the longitudinal webs. Alternatively, the Siebtopf made of metal is deep-drawn, and in the pot jacket of Siebtopfes laser sieves are drilled by laser. With both versions of the sieve well an axial compressibility of the valve in the sieve area is achieved by means of its axial displaceability in the inlet channel.
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 invention is explained in more detail in the following description with reference to exemplary embodiments illustrated in the drawings. Show it:
Das in
Das Ventil weist eine Ventilöffnung
Der in
In dem in
Wie aus
Der Zulaufkanal
Der im Zulaufkanal
ZITATE ENTHALTEN IN DER BESCHREIBUNG QUOTES 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 of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.
Zitierte PatentliteraturCited patent literature
- DE 102005061424 A1 [0002] DE 102005061424 A1 [0002]
Claims (10)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102010030922A DE102010030922A1 (en) | 2010-07-05 | 2010-07-05 | Valve for flowing medium, particularly metering valve for metering freezing liquid, comprises valve chamber, which upstream valve opening, and supply channel, which guides medium to valve chamber |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102010030922A DE102010030922A1 (en) | 2010-07-05 | 2010-07-05 | Valve for flowing medium, particularly metering valve for metering freezing liquid, comprises valve chamber, which upstream valve opening, and supply channel, which guides medium to valve chamber |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102010030922A1 true DE102010030922A1 (en) | 2012-01-05 |
Family
ID=45346886
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102010030922A Pending DE102010030922A1 (en) | 2010-07-05 | 2010-07-05 | Valve for flowing medium, particularly metering valve for metering freezing liquid, comprises valve chamber, which upstream valve opening, and supply channel, which guides medium to valve chamber |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE102010030922A1 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102011119772A1 (en) * | 2011-11-30 | 2013-06-06 | Emitec Gesellschaft Für Emissionstechnologie Mbh | Device for providing reducing agent |
WO2019011033A1 (en) * | 2017-07-11 | 2019-01-17 | 天纳克(苏州)排放系统有限公司 | Injector |
GB2568269A (en) * | 2017-11-09 | 2019-05-15 | Delphi Tech Ip Ltd | SCR doser |
IT201900018572A1 (en) * | 2019-10-11 | 2021-04-11 | Magneti Marelli Spa | LIQUID FEED UNIT ON BOARD VEHICLE AND LIQUID FEED ASSEMBLY ON BOARD VEHICLE |
WO2022069108A1 (en) * | 2020-09-29 | 2022-04-07 | Robert Bosch Gmbh | Injection valve for a water injection system of an internal combustion engine and water injection system having such an injection valve |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
-
2010
- 2010-07-05 DE DE102010030922A patent/DE102010030922A1/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102011119772A1 (en) * | 2011-11-30 | 2013-06-06 | Emitec Gesellschaft Für Emissionstechnologie Mbh | Device for providing reducing agent |
US9080485B2 (en) | 2011-11-30 | 2015-07-14 | Emitec Gesellschaft Fuer Emissionstechnologie Mbh | Device for providing reducing agent and motor vehicle having the device |
WO2019011033A1 (en) * | 2017-07-11 | 2019-01-17 | 天纳克(苏州)排放系统有限公司 | Injector |
GB2568269A (en) * | 2017-11-09 | 2019-05-15 | Delphi Tech Ip Ltd | SCR doser |
EP3483405A1 (en) * | 2017-11-09 | 2019-05-15 | Delphi Technologies IP Limited | Scr doser |
GB2568269B (en) * | 2017-11-09 | 2020-02-19 | Delphi Tech Ip Ltd | SCR doser |
IT201900018572A1 (en) * | 2019-10-11 | 2021-04-11 | Magneti Marelli Spa | LIQUID FEED UNIT ON BOARD VEHICLE AND LIQUID FEED ASSEMBLY ON BOARD VEHICLE |
WO2022069108A1 (en) * | 2020-09-29 | 2022-04-07 | Robert Bosch Gmbh | Injection valve for a water injection system of an internal combustion engine and water injection system having such an injection valve |
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R012 | Request for examination validly filed | ||
R016 | Response to examination communication | ||
R084 | Declaration of willingness to licence |