DE102007028227B4 - Exhaust after-treatment device for an internal combustion engine - Google Patents
Exhaust after-treatment device for an internal combustion engine Download PDFInfo
- Publication number
- DE102007028227B4 DE102007028227B4 DE102007028227.5A DE102007028227A DE102007028227B4 DE 102007028227 B4 DE102007028227 B4 DE 102007028227B4 DE 102007028227 A DE102007028227 A DE 102007028227A DE 102007028227 B4 DE102007028227 B4 DE 102007028227B4
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- DE
- Germany
- Prior art keywords
- flow source
- fuel
- hollow element
- exhaust
- injector
- 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.)
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Classifications
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- 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
- F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
- F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
- F01N3/023—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles
- F01N3/025—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles using fuel burner or by adding fuel to exhaust
- F01N3/0253—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles using fuel burner or by adding fuel to exhaust adding fuel to exhaust gases
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- 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
- F01N2610/03—Adding substances to exhaust gases the substance being hydrocarbons, e.g. engine fuel
-
- 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
-
- 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
- F01N2610/1473—Overflow or return means for the substances, e.g. conduits or valves for the return path
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
Abgasnachbehandlungsvorrichtung für eine Brennkraftmaschine mit einem Abgastrakt, in den ein Injektor Kraftstoff einspritzt, und einer Kraftstoffzuleitung (21), die den Injektor mit einer Volumenstromquelle (1) verbindet, wobei zwischen dem Injektor und der Volumenstromquelle (1) eine Drossel (12) angeordnet ist, – wobei ein an der Volumenstromquelle (1) angeschraubtes Hohlelement (2) vorgesehen ist, das die Volumenstromquelle (1) mit der Kraftstoffleitung (21) verbindet, – wobei die Kraftstoffleitung (21) das Hohlelement umgreift, – wobei das Hohlelement (2) eine quer zur Kraftstoffleitung (21) und in Befestigungsrichtung des Hohlelements (2) angeordnete Aussparung (23) umfasst, und – wobei die Aussparung (23) über eine Bohrung (24) mit der Kraftstoffleitung (21) verbunden ist, dadurch gekennzeichnet, dass die Drossel (12) in der Volumenstromquelle (1) angeordnet ist und die Volumenstromquelle (1) mit der Aussparung (23) des Hohlelements (2) über einen Hohlraum (13) verbindet.Exhaust after-treatment device for an internal combustion engine with an exhaust tract, in which an injector injects fuel, and a fuel supply line (21) which connects the injector with a volumetric flow source (1), wherein between the injector and the volumetric flow source (1), a throttle (12) is arranged In which a hollow element (2) screwed to the volume flow source (1) is provided which connects the volume flow source (1) to the fuel line (21), - the fuel line (21) embracing the hollow element, - the hollow element (2) a recess (23) arranged transversely to the fuel line (21) and in the fastening direction of the hollow element (2), and - wherein the recess (23) is connected to the fuel line (21) via a bore (24), characterized in that Throttle (12) is arranged in the volume flow source (1) and the volume flow source (1) with the recess (23) of the hollow element (2) via a cavity (13) connect et.
Description
Die Erfindung betrifft eine Abgasnachbehandlungsvorrichtung für eine Brennkraftmaschine gemäß den Merkmalen des Oberbegriffs des Patentanspruchs 1.The invention relates to an exhaust aftertreatment device for an internal combustion engine according to the features of the preamble of patent claim 1.
Vom Gesetzgeber werden immer schärfere Abgasnormen der aus einer Brennkraftmaschine austretenden Verbrennungsgase gesetzt. Um diese Abgasnormen einhalten zu können, sind im Abgastrakt komplexe Abgasnachbehandlungsvorrichtungen angeordnet. Eine dieser Vorrichtungen ist ein Rußpartikelfilter, der die Emission von im Abgas sich befindlichen Rußpartikel verringert. Damit beim Betrieb der Brennkraftmaschine ein Verstopfen des Rußpartikelfilters, und somit eine Betriebsunfähigkeit der Brennkraftmaschine verhindert wird, werden die Filter in regelmäßigen Abständen durch Abbrennen des im Rußpartikelfilters vorhandenen Rußes regeneriert. Dabei wird Kraftstoff über einen im Abgastrakt angeordneten Injektor in den Abgastrakt eingespritzt.Legislators are setting ever stricter emission standards for the combustion gases leaving an internal combustion engine. In order to comply with these emission standards, complex exhaust aftertreatment devices are arranged in the exhaust system. One of these devices is a soot particle filter, which reduces the emission of soot particles in the exhaust gas. So that during operation of the internal combustion engine, clogging of the soot particle filter, and thus inoperability of the internal combustion engine is prevented, the filters are regenerated at regular intervals by burning off the soot present in the soot particle filter. In this case, fuel is injected into the exhaust tract via an injector arranged in the exhaust tract.
Der für diesen Injektor notwendige Kraftstoffvolumenstrom kann durch eine Volumenstromquelle wie z. B. von einem Niederdruckkreislauf einer Hochdruckpumpe und/oder einem Injektorrücklauf und/oder einem Einspritzsystemrücklauf bereitgestellt werden. Bei einem Einspritzvorgang mit Hilfe des Kraftstoffinjektors im Abgastrakt entsteht ein Druckabfall in z. B. dem Niederdruckkreislauf, der die Pumpenregelung beeinflusst. Infolge des Einspritzvorgangs können Druckpulsationen bei einem Betrieb der Hochdruckpumpe ausgehend von der Volumenstromquelle zu dem Kraftstoffinjektor auftreten. Alternativ kann es auch zu Druckpulsationen bei einem Einspritzvorgang ausgehend vom Kraftstoffinjektor zu der Volumenstromquelle kommen.The necessary for this injector fuel flow can by a volume flow source such. B. from a low pressure circuit of a high pressure pump and / or an injector return and / or an injection system return can be provided. In an injection process using the fuel injector in the exhaust system, a pressure drop in z. B. the low pressure circuit that affects the pump control. As a result of the injection process, pressure pulsations can occur during operation of the high-pressure pump, starting from the volumetric flow source to the fuel injector. Alternatively, pressure pulsations may also occur in an injection process starting from the fuel injector to the volumetric flow source.
Aus der
Aus der
Auch aus der
Aus der
Die der vorliegenden Erfindung zu Grunde liegende Aufgabe besteht nun darin, die auftretenden Druckpulsationen zu verringern.The object underlying the present invention is now to reduce the pressure pulsations occurring.
Diese Aufgabe wird erfindungsgemäß durch die Merkmale des Patentanspruchs 1 gelöst. Vorteilhafte Ausgestaltungen der Erfindung sind in den Unteransprüchen gekennzeichnet.This object is achieved by the features of claim 1. Advantageous embodiments of the invention are characterized in the subclaims.
Die mit der Erfindung erzielten Vorteile bestehen insbesondere darin, dass durch den Einbau einer Drossel, insbesondere einer Blende, in die Kraftstoffleitung zwischen dem Kraftstoffinjektor und einer Volumenstromquelle die Druckpulsation zwischen den beiden Bauteilen verringert wird. Bei der Volumenstromquelle handelt es sich um den Niederdruckkreislauf der Hochdruckpumpe, und/oder die Injektorücklaufleitung, und/oder die Einspritzsystemrücklaufleitung.The advantages achieved by the invention are in particular that the pressure pulsation between the two components is reduced by the installation of a throttle, in particular a diaphragm, in the fuel line between the fuel injector and a volumetric flow source. The volumetric flow source is the low-pressure circuit of the high-pressure pump, and / or the injector return line, and / or the injection system return line.
Ein vorteilhafter Aspekt der Erfindung ist es, dass die Drossel nicht als separates Bauteil zwischen den Kraftstoffinjektor und die Volumenstromquelle eingebaut werden muss, sondern auch in schon vorhandene Bauteile eingebaut werden kann. Dadurch entsteht kein zusätzlicher Montageaufwand, der mit höheren Fertigungskosten verbunden ist.An advantageous aspect of the invention is that the throttle does not have to be installed as a separate component between the fuel injector and the volumetric flow source, but can also be installed in already existing components. This results in no additional installation effort, which is associated with higher manufacturing costs.
Einzelheiten der Erfindung werden anhand der Zeichnungen näher erläutert. Dabei zeigt:Details of the invention will be explained in more detail with reference to the drawings. Showing:
Die Drossel
Claims (2)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102007028227.5A DE102007028227B4 (en) | 2007-06-20 | 2007-06-20 | Exhaust after-treatment device for an internal combustion engine |
| PCT/EP2008/057883 WO2008155413A1 (en) | 2007-06-20 | 2008-06-20 | Exhaust gas treatment device for an internal combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102007028227.5A DE102007028227B4 (en) | 2007-06-20 | 2007-06-20 | Exhaust after-treatment device for an internal combustion engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE102007028227A1 DE102007028227A1 (en) | 2008-12-24 |
| DE102007028227B4 true DE102007028227B4 (en) | 2015-10-15 |
Family
ID=39830360
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE102007028227.5A Active DE102007028227B4 (en) | 2007-06-20 | 2007-06-20 | Exhaust after-treatment device for an internal combustion engine |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE102007028227B4 (en) |
| WO (1) | WO2008155413A1 (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5806310A (en) * | 1995-04-10 | 1998-09-15 | Nippon Soken, Inc. | Exhaust purification apparatus |
| GB2357047A (en) * | 1999-12-11 | 2001-06-13 | Ford Global Tech Inc | Exhaust gas purification system |
| WO2002043840A1 (en) * | 2000-11-30 | 2002-06-06 | Robert Bosch Gmbh | Device and method for subsequently treating exhaust gases |
| DE102004062208A1 (en) * | 2004-12-23 | 2006-07-13 | Arvinmeritor Emissions Technologies Gmbh | vehicle exhaust gas cleaning system regeneration involves driving dosing element depending on line pressure to feed oxidisable liquid to heating chamber, evaporating liquid with heating element, feeding vapor into gas before cleaning system |
| EP1752632A1 (en) * | 2005-08-09 | 2007-02-14 | Friedrich Boysen GmbH & Co. KG | Exhaust gas purification device and corresponding method |
-
2007
- 2007-06-20 DE DE102007028227.5A patent/DE102007028227B4/en active Active
-
2008
- 2008-06-20 WO PCT/EP2008/057883 patent/WO2008155413A1/en not_active Ceased
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5806310A (en) * | 1995-04-10 | 1998-09-15 | Nippon Soken, Inc. | Exhaust purification apparatus |
| GB2357047A (en) * | 1999-12-11 | 2001-06-13 | Ford Global Tech Inc | Exhaust gas purification system |
| WO2002043840A1 (en) * | 2000-11-30 | 2002-06-06 | Robert Bosch Gmbh | Device and method for subsequently treating exhaust gases |
| DE102004062208A1 (en) * | 2004-12-23 | 2006-07-13 | Arvinmeritor Emissions Technologies Gmbh | vehicle exhaust gas cleaning system regeneration involves driving dosing element depending on line pressure to feed oxidisable liquid to heating chamber, evaporating liquid with heating element, feeding vapor into gas before cleaning system |
| EP1752632A1 (en) * | 2005-08-09 | 2007-02-14 | Friedrich Boysen GmbH & Co. KG | Exhaust gas purification device and corresponding method |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102007028227A1 (en) | 2008-12-24 |
| WO2008155413A1 (en) | 2008-12-24 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| OP8 | Request for examination as to paragraph 44 patent law | ||
| R016 | Response to examination communication | ||
| R081 | Change of applicant/patentee |
Owner name: CONTINENTAL AUTOMOTIVE GMBH, DE Free format text: FORMER OWNER: CONTINENTAL AUTOMOTIVE GMBH, SIEMENS VDO MECHANICAL COMPONEN, , DE Owner name: CONTINENTAL MECHANICAL COMPONENTS GERMANY GMBH, DE Free format text: FORMER OWNER: CONTINENTAL AUTOMOTIVE GMBH, SIEMENS VDO MECHANICAL COMPONEN, , DE Owner name: CONTINENTAL MECHANICAL COMPONENTS GERMANY GMBH, DE Free format text: FORMER OWNERS: CONTINENTAL AUTOMOTIVE GMBH, 30165 HANNOVER, DE; SIEMENS VDO MECHANICAL COMPONENTS GMBH, 93426 RODING, DE Owner name: CONTINENTAL AUTOMOTIVE GMBH, DE Free format text: FORMER OWNERS: CONTINENTAL AUTOMOTIVE GMBH, 30165 HANNOVER, DE; SIEMENS VDO MECHANICAL COMPONENTS GMBH, 93426 RODING, DE |
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| R018 | Grant decision by examination section/examining division | ||
| R020 | Patent grant now final | ||
| R084 | Declaration of willingness to licence | ||
| R081 | Change of applicant/patentee |
Owner name: VITESCO TECHNOLOGIES GMBH, DE Free format text: FORMER OWNERS: CONTINENTAL AUTOMOTIVE GMBH, 30165 HANNOVER, DE; CONTINENTAL MECHANICAL COMPONENTS GERMANY GMBH, 93426 RODING, DE |
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| R081 | Change of applicant/patentee |
Owner name: SCHAEFFLER TECHNOLOGIES AG & CO. KG, DE Free format text: FORMER OWNER: VITESCO TECHNOLOGIES GMBH, 30165 HANNOVER, DE Owner name: VITESCO TECHNOLOGIES GMBH, DE Free format text: FORMER OWNER: VITESCO TECHNOLOGIES GMBH, 30165 HANNOVER, DE |
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| R081 | Change of applicant/patentee |
Owner name: SCHAEFFLER TECHNOLOGIES AG & CO. KG, DE Free format text: FORMER OWNER: VITESCO TECHNOLOGIES GMBH, 93055 REGENSBURG, DE |