DE10303569A1 - Exhaust reconducting system for internal combustion engine, has exhaust mixing unit having discharge openings through which exhaust gases are introduced into air flow, and which is arranged within and concentric with siphon - Google Patents
Exhaust reconducting system for internal combustion engine, has exhaust mixing unit having discharge openings through which exhaust gases are introduced into air flow, and which is arranged within and concentric with siphon Download PDFInfo
- Publication number
- DE10303569A1 DE10303569A1 DE10303569A DE10303569A DE10303569A1 DE 10303569 A1 DE10303569 A1 DE 10303569A1 DE 10303569 A DE10303569 A DE 10303569A DE 10303569 A DE10303569 A DE 10303569A DE 10303569 A1 DE10303569 A1 DE 10303569A1
- Authority
- DE
- Germany
- Prior art keywords
- exhaust gas
- exhaust
- abgaszumischeinheit
- gas recirculation
- intake pipe
- 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- Withdrawn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
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
- F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
- F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
- F02M26/17—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories in relation to the intake system
- F02M26/19—Means for improving the mixing of air and recirculated exhaust gases, e.g. venturis or multiple openings to the intake system
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust-Gas Circulating Devices (AREA)
Abstract
Description
Die Erfindung betrifft ein Abgasrückführsystem für eine Brennkraftmaschine eines Kraftfahrzeugs nach dem Oberbegriff des Anspruchs 1.The invention relates to an exhaust gas recirculation system for one Internal combustion engine of a motor vehicle according to the preamble of Claim 1.
Es ist in der Kraftfahrzeugtechnik allgemein bekannt, die bei der Verbrennung eines Luft-Kraftstoff-Gemisches in einem Brennraum einer Brennkraftmaschine entstehenden Abgase zumindest teilweise wieder der dem Brennraum über ein Ansaugrohr zugeführten Frischluft beizumengen, um die Abgasemission zu verringern und den Kraftstoffverbrauch zu reduzieren, da die Abgase auf diese Weise den Brennraum nochmals durchlaufen. Bei dem Einleiten der rückgeführten Abgase in den über das Ansaugrohr zugeführten Luftstrom treten bei den herkömmlichen Abgasrückführsystem insbesondere zwei Probleme auf, nämlich das Sicherstellen einer möglichst homogenen Mischung der Abgase und der Luft einerseits und das Erzielen eines möglichst geringen für die jeweilige Konstruktion benötigten Bauraums.It is in automotive engineering commonly known in the combustion of an air-fuel mixture in a combustion chamber of an internal combustion engine resulting exhaust gases at least partially the fresh air supplied to the combustion chamber via an intake pipe to reduce exhaust emissions and fuel consumption reduce, because the exhaust gases in this way the combustion chamber again run through. In the introduction of the recirculated exhaust gases in the over the Intake manifold supplied Airflow occur in the conventional Exhaust gas recirculation system In particular, two problems, namely ensuring a possible homogeneous mixture of exhaust gases and air on the one hand and achieving one possible low for needed the respective construction Installation space.
Aufgabe der vorliegenden Erfindung ist deshalb, ein Abgasrückführsystem der eingangs genannten Art bereitzustellen, das bei einer geringen Größe der Konstruktion zum Einleiten der Abgase in den Luftstrom im Ansaugrohr gleichzeitig eine möglichst optimale Vermischung der Abgase mit der Frischluft erzielt.Object of the present invention is therefore an exhaust gas recirculation system of the type mentioned above, with a small size of the construction for introducing the exhaust gases into the air flow in the intake manifold at the same time one possible achieved optimal mixing of the exhaust gases with the fresh air.
Diese Aufgabe wird durch ein Abgasrückführsystem für eine Brennkraftmaschine mit den Merkmalen des Anspruchs 1 gelöst.This task is accomplished by an exhaust gas recirculation system for one Internal combustion engine solved with the features of claim 1.
Das erfindungsgemäße Abgasrückführsystem für eine Brennkraftmaschine zeichnet sich durch eine vorzugsweise rohrförmige Abgaszumischeinheit aus, die an dem an dem Ansaugrohr vorgesehenen Ende der Abgasrückführungsleitung vorgesehen ist, im wesentlichen mittig in dem Ansaugrohr angeordnet ist und mehrere Ausströmöffnungen zum Einleiten von mehreren Abgas-Teilströmen in den Luftstrom in dem Ansaugrohr aufweist.The exhaust gas recirculation system according to the invention for an internal combustion engine records through a preferably tubular Abgaszumischeinheit, at the provided on the intake manifold end of the exhaust gas recirculation line is provided, arranged substantially centrally in the intake pipe is and several outlets for introducing a plurality of exhaust gas substreams in the Having air flow in the intake pipe.
Durch die Einleitung der Abgase in mehreren Teilströmen in den Luftstrom in dem Ansaugrohr von der Mitte des Ansaugrohres ergibt sich bei kurzer Baulänge der erfindungsgemäßen Konstruktion eine sehr gute Gleichverteilung der Abgase im Ansaugrohr und somit ein homogenes Luft-Abgas-Gemisch, das dem Brennraum der Brennkraftmaschine zugeführt wird.By introducing the exhaust gases in several streams in the air flow in the intake pipe from the center of the intake pipe results in a short length the construction according to the invention a very good uniform distribution of the exhaust gases in the intake manifold and thus a homogeneous air-exhaust mixture, the combustion chamber of the internal combustion engine supplied becomes.
In weiterer Ausgestaltung der Erfindung weist die Abgaszumischeinheit mehrere radiale, vorzugsweise gleichmäßig verteilt angeordnete Ausströmöffnungen zur Einleitung der Abgas-Teilströme von der Mitte des Ansaugrohres radial nach außen auf.In a further embodiment of the invention the Abgaszumischeinheit several radial, preferably evenly distributed arranged outflow openings for the introduction of the exhaust gas streams of the center of the intake pipe radially outward.
In weiterer Ausgestaltung der Erfindung kann die Abgaszumischeinheit zusätzlich zumindest eine axiale Ausströmöffnung an einem Ende der Abgaszumischeinheit aufweisen, durch welche Abgase entgegen der Luftströmungsrichtung in das Ansaugrohr einleitbar sind.In a further embodiment of the invention the Abgaszumischeinheit in addition at least one axial outflow opening Have one end of the Abgaszumischeinheit through which exhaust gases the air flow direction can be introduced into the intake pipe.
Bei einer hohen Druckdifferenz zwischen Abgasen und Frischluft können so die Abgase zusätzlich entgegen der Luftströmungsrichtung in das Ansaugrohr eingeleitet werden, was eine Verlängerung der Mischstrecke und somit ein homogeneres Luft-Abgas-Gemisch ergibt. Im Fall einer kleinen Druckdifferenz zwischen Abgasen und Frischluft ist eine Vormischung durch das Einströmen der Frischluft über die axiale Ausströmöffnung in die Abgaszumischeinheit möglich. So ist selbst bei wechselnden Druckdifferenzen zwischen Frischluft und Abgasen jederzeit eine gleichmäßige Vermischung der rückgeführten Abgase mit der Frischluft gewährleistet.At a high pressure difference between Exhaust gases and fresh air can so the exhaust gases in addition against the direction of air flow be introduced into the intake pipe, which is an extension of the Mixing section and thus a more homogeneous air-exhaust mixture results. In the case of one small pressure difference between exhaust gases and fresh air is one Premix by the inflow the fresh air over the axial outflow opening in the Abgaszumischeinheit possible. So even with changing pressure differences between fresh air and exhaust gases at any time a uniform mixing of recirculated exhaust gases guaranteed with the fresh air.
Außerdem ermöglicht die Ausbildung der Abgaszumischeinheit mit obigen radialen und axialen Ausströmöffnungen im Betriebszustand ohne Abgasrückführung eine Spülung der Abgaszumischeinheit mit Frischluft, sodass Verschmutzungen der Abgaszumischeinheit durch Ölrückstände und dergleichen regelmäßig und ohne großen Aufwand beseitigt werden können.In addition, the formation of the Abgaszumischeinheit allows with the above radial and axial outflow openings in the operating state without exhaust gas recirculation one flush the Abgaszumischeinheit with fresh air, so that pollution of the Abgaszumischeinheit by oil residues and like that regularly and without big ones Effort can be eliminated.
In weiterer Ausgestaltung der Erfindung weist die Abgaszumischeinheit einen pilzförmigen Strömungskörper auf, der an einem in Luftströmungsrichtung stromaufwärtigen Ende der Abgaszumischeinheit vorgesehen ist. Die axiale Ausströmöffnung der Abgaszumischeinheit ist in diesem Fall vorzugsweise als eine Bohrung in dem pilzförmigen Strömungskörper ausgebildet.In a further embodiment of the invention the Abgaszumischeinheit a mushroom-shaped flow body, which in an air flow direction upstream End of Abgaszumischeinheit is provided. The axial outflow opening of Abgaszumischeinheit is in this case preferably as a bore formed in the mushroom-shaped flow body.
In noch weiterer Ausgestaltung der Erfindung ist die Abgaszumischeinheit an ihrem Außenumfang mit zumindest einer Abrisskante zum Erzeugen einer Strömungsturbulenz versehen. Die durch die Abrisskanten verursachte turbulente Luftströmung bewirkt eine noch bessere Vermischung von Frischluft und Abgasen.In still another embodiment of Invention is the Abgaszumischeinheit on its outer periphery with at least one spoiler edge for generating a flow turbulence Provided. The caused by the demolition edges turbulent air flow causes an even better mixing of fresh air and exhaust gases.
Weitere Merkmale, Merkmalskombinationen und Vorteile ergeben sich aus der Beschreibung sowie den Zeichnungen. Ein konkretes Ausführungsbeispiel der Erfindung ist in den Zeichnungen vereinfacht dargestellt und in der nachfolgenden Beschreibung näher erläutert. Es zeigenFurther features, feature combinations and Benefits result from the description and the drawings. A concrete embodiment the invention is shown in simplified form in the drawings and explained in more detail in the following description. Show it
In
Das Ansaugrohr
Zur Verringerung der Abgasemissionen
und Reduzierung des Kraftstoffverbrauchs ist es außerdem üblich, zumindest
einen Teil der Abgase aus dem Abgasrohr über eine geeignete Abgasrückführungsleitung
(nicht dargestellt) zu dem Ansaugrohr zurückzuführen, sodass diese rückgeführten Abgase
Wie schematisch in
Die Abgaszumischeinheit
Wie in
Die gleichmäßige Vermischung von Frischluft
Bei einer hohen Druckdifferenz zwischen den
rückgeführten Abgasen
Ein weiterer Vorteil der erfindungsgemäßen Abgaszumischeinheit
In diesem Betriebszustand kann die
Abgaszumischeinheit
Claims (7)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10303569A DE10303569A1 (en) | 2003-01-30 | 2003-01-30 | Exhaust reconducting system for internal combustion engine, has exhaust mixing unit having discharge openings through which exhaust gases are introduced into air flow, and which is arranged within and concentric with siphon |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10303569A DE10303569A1 (en) | 2003-01-30 | 2003-01-30 | Exhaust reconducting system for internal combustion engine, has exhaust mixing unit having discharge openings through which exhaust gases are introduced into air flow, and which is arranged within and concentric with siphon |
Publications (1)
Publication Number | Publication Date |
---|---|
DE10303569A1 true DE10303569A1 (en) | 2004-08-12 |
Family
ID=32695033
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE10303569A Withdrawn DE10303569A1 (en) | 2003-01-30 | 2003-01-30 | Exhaust reconducting system for internal combustion engine, has exhaust mixing unit having discharge openings through which exhaust gases are introduced into air flow, and which is arranged within and concentric with siphon |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE10303569A1 (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007089565A1 (en) * | 2006-01-27 | 2007-08-09 | Borgwarner Inc. | Mixing unit for low pressure-egr condensate into the compressor |
FR2908473A1 (en) * | 2006-11-13 | 2008-05-16 | Peugeot Citroen Automobiles Sa | Exhaust gas recirculation system for e.g. oil engine, has nozzle arranged at exit of recirculation line to reintroduce recirculated exhaust gas flow in fresh gas flow circulating in supply line, and provided with exit having star section |
FR2908471A1 (en) * | 2006-11-13 | 2008-05-16 | Peugeot Citroen Automobiles Sa | Exhaust gas recycling system for motor vehicle, has tubular nozzle including outlet with star-shaped cross-section, and arranged in outlet of recycling line to introduce recycled exhaust gas flow in fresh gas flow in supply line |
FR2927957A1 (en) * | 2008-02-21 | 2009-08-28 | Mark Iv Systemes Moteurs Soc P | Inlet distributor for air inlet system of internal combustion engine of motor vehicle, has injection device for injecting counter-current exhaust gas in flow entering opening, and nozzle tip terminated at its free end by flat end portion |
FR2946396A3 (en) * | 2009-06-04 | 2010-12-10 | Renault Sas | Arrangement for mixing exhaust gas and fresh air in drive train of motor vehicle, has conduits connecting recirculation path to intake path to position outlet orifice of one of conduits upstream of and near outlet orifice of other conduit |
US8925529B2 (en) | 2010-07-23 | 2015-01-06 | Daf Trucks N.V. | Device for mixing exhaust gas with fresh air to be returned to a combustion engine |
DE102013215234A1 (en) * | 2013-08-02 | 2015-02-05 | Mahle International Gmbh | Intake module for an internal combustion engine |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3001413A1 (en) * | 1979-01-17 | 1980-08-07 | Nissan Motor | INLET DEVICE FOR EXHAUST GAS RECIRCULATION SYSTEM OF A COMBUSTION ENGINE |
US5207714A (en) * | 1991-01-25 | 1993-05-04 | Aisin Seiki Kabushiki Kaisha | Exhausted gas recycle device |
JP2000054915A (en) * | 1998-08-10 | 2000-02-22 | Isuzu Motors Ltd | Egr device |
-
2003
- 2003-01-30 DE DE10303569A patent/DE10303569A1/en not_active Withdrawn
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3001413A1 (en) * | 1979-01-17 | 1980-08-07 | Nissan Motor | INLET DEVICE FOR EXHAUST GAS RECIRCULATION SYSTEM OF A COMBUSTION ENGINE |
US5207714A (en) * | 1991-01-25 | 1993-05-04 | Aisin Seiki Kabushiki Kaisha | Exhausted gas recycle device |
JP2000054915A (en) * | 1998-08-10 | 2000-02-22 | Isuzu Motors Ltd | Egr device |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007089565A1 (en) * | 2006-01-27 | 2007-08-09 | Borgwarner Inc. | Mixing unit for low pressure-egr condensate into the compressor |
FR2908473A1 (en) * | 2006-11-13 | 2008-05-16 | Peugeot Citroen Automobiles Sa | Exhaust gas recirculation system for e.g. oil engine, has nozzle arranged at exit of recirculation line to reintroduce recirculated exhaust gas flow in fresh gas flow circulating in supply line, and provided with exit having star section |
FR2908471A1 (en) * | 2006-11-13 | 2008-05-16 | Peugeot Citroen Automobiles Sa | Exhaust gas recycling system for motor vehicle, has tubular nozzle including outlet with star-shaped cross-section, and arranged in outlet of recycling line to introduce recycled exhaust gas flow in fresh gas flow in supply line |
FR2927957A1 (en) * | 2008-02-21 | 2009-08-28 | Mark Iv Systemes Moteurs Soc P | Inlet distributor for air inlet system of internal combustion engine of motor vehicle, has injection device for injecting counter-current exhaust gas in flow entering opening, and nozzle tip terminated at its free end by flat end portion |
FR2946396A3 (en) * | 2009-06-04 | 2010-12-10 | Renault Sas | Arrangement for mixing exhaust gas and fresh air in drive train of motor vehicle, has conduits connecting recirculation path to intake path to position outlet orifice of one of conduits upstream of and near outlet orifice of other conduit |
US8925529B2 (en) | 2010-07-23 | 2015-01-06 | Daf Trucks N.V. | Device for mixing exhaust gas with fresh air to be returned to a combustion engine |
DE102013215234A1 (en) * | 2013-08-02 | 2015-02-05 | Mahle International Gmbh | Intake module for an internal combustion engine |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE102015115220B4 (en) | Mixer assembly to provide a compact mixer | |
DE102016214954A1 (en) | Gaseous fuel, EGR and air mixing device plus insert | |
DE60107731T2 (en) | Inlet manifold for an internal combustion engine | |
EP2456969B1 (en) | Internal combustion engine and fresh air system | |
WO2007093367A1 (en) | Compressor for an internal combustion engine | |
DE102007035556A1 (en) | Mixing apparatus for adding exhaust gas recirculation flow into charge air flow of internal-combustion engine, has connecting tube running transverse through passage channel and connecting inlet opening with one of chambers | |
WO2009086943A1 (en) | Burner and method for reducing self-induced flame oscillations | |
DE102004041272B4 (en) | Hybrid burner lance | |
DE2654696A1 (en) | FUEL INJECTOR FOR A GAS TURBINE ENGINE | |
DE10303569A1 (en) | Exhaust reconducting system for internal combustion engine, has exhaust mixing unit having discharge openings through which exhaust gases are introduced into air flow, and which is arranged within and concentric with siphon | |
DE102004025254A1 (en) | Exhaust gas recycling type diesel engine for motor vehicle has exhaust reconducting mechanism having discharge opening provided with turbulence production arrangement | |
DE102006037578A1 (en) | Mixer used in an exhaust gas recycling system comprises a tubular base body with an inner wall delimiting a charged air flow channel and an integrated exhaust gas flow channel | |
EP3473930B1 (en) | Nozzle for a combustion chamber of an engine | |
DE102006038204A1 (en) | Input funnel for exhaust treatment device for motor vehicle, has diffuser arranged within input funnel, which extends away from inflow opening into extended range of input funnel | |
WO2004031555A1 (en) | Suction device | |
EP0866268B1 (en) | Method of operating a vortex stabilised burner and burner applying the method | |
DE102016123826A1 (en) | Mixture forming device for a gas engine and gas engine | |
DE10042247C5 (en) | Mixing unit for gas flows on an internal combustion engine | |
DE2805091A1 (en) | Throttle for external ignition IC engine - has profiled section to produce supersonic velocities at low loads to improve combustion | |
DE102004003900A1 (en) | Combustion engine with piston cylinder has inlet channel with exhaust gas feedback and divider so that exhaust gas flows to cylinder wall and air or fuel mixture to center | |
DE19822336A1 (en) | Method and device for operating an atmospheric, in particular fully premixed gas burner | |
DE20023818U1 (en) | System, for re-injection of exhaust gas into internal combustion engine, has control valve protruding into inlet flow channel, with obstruction placed downstream to create dynamic pressure and to induce radial flow | |
DE2160675C3 (en) | Burner device for a gas turbine combustion chamber | |
EP3520888B1 (en) | Mixer | |
DE102006017148A1 (en) | Exhaust gas recirculation valve for use in internal-combustion engine, has housing arranged within region of intersection of exhaust gas recirculating line to air supply pipe, where valve is arranged around longitudinal axis |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
OM8 | Search report available as to paragraph 43 lit. 1 sentence 1 patent law | ||
8127 | New person/name/address of the applicant |
Owner name: DAIMLERCHRYSLER AG, 70327 STUTTGART, DE |
|
8127 | New person/name/address of the applicant |
Owner name: DAIMLER AG, 70327 STUTTGART, DE |
|
8141 | Disposal/no request for examination |