EP2402585B1 - Dispositif de recirculation des gaz d'échappement pour un moteur à combustion interne - Google Patents
Dispositif de recirculation des gaz d'échappement pour un moteur à combustion interne Download PDFInfo
- Publication number
- EP2402585B1 EP2402585B1 EP11179888.0A EP11179888A EP2402585B1 EP 2402585 B1 EP2402585 B1 EP 2402585B1 EP 11179888 A EP11179888 A EP 11179888A EP 2402585 B1 EP2402585 B1 EP 2402585B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- exhaust gas
- channel
- outflow
- combustion engine
- shows
- 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.)
- Not-in-force
Links
- 238000002485 combustion reaction Methods 0.000 title claims description 13
- 230000003134 recirculating effect Effects 0.000 title 1
- 230000037431 insertion Effects 0.000 claims 2
- 238000003780 insertion Methods 0.000 claims 2
- 239000002826 coolant Substances 0.000 description 20
- 229910052751 metal Inorganic materials 0.000 description 10
- 239000002184 metal Substances 0.000 description 10
- 238000001816 cooling Methods 0.000 description 7
- 239000000463 material Substances 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000013021 overheating Methods 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 238000009827 uniform distribution Methods 0.000 description 2
- 244000089486 Phragmites australis subsp australis Species 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 230000000153 supplemental effect Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 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
- 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
- F02M26/18—Thermal insulation or heat protection
-
- 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
Definitions
- the invention relates to a device for exhaust gas recirculation for an internal combustion engine according to the preamble of claim 1.
- the recirculation of exhaust gas of an internal combustion engine for example, to reduce pollutants is common in commercial vehicles and passenger cars.
- increasing return rates are required, for example, to over 30%.
- the recirculated exhaust gas can have very high temperatures, depending on the recirculation rate and the operating state. It is known and customary to provide the inflow of the recirculated exhaust gas into the combustion air in a metal plenum region (intake manifold).
- the object of the invention is achieved for an aforementioned device by the characterizing features of claim 1.
- the exhaust pipe in a region of its mouth into the channel as at least one pipe section with a plurality of exhaust ports for the exhaust gas along the pipe section, a division of the exhaust gas stream into a plurality of partial streams over a large spatial area is achieved.
- excessive local heating for example, a wall of the channel, avoided and also improves the mixing of exhaust gas and air.
- the exhaust pipe branches in the region of their confluence in a plurality of pipe sections, whereby a particularly uniform distribution of the exhaust gas is achieved.
- the outflow openings are distributed according to number and / or size over a length of the pipe section such that a hydraulic outflow cross section per unit length of the pipe section increases in the flow direction of the exhaust gas.
- flow obstacles are arranged on at least some of the outflow openings, whereby a swirling achieved and / or a preferred outflow direction can be specified. In this way, a harmful heat input, for example, in the walls of the channel can be additionally avoided.
- the outflow openings at least predominantly in an outflow angle of between 45 ° and 135 °, in particular between 90 ° and 135 °, are aligned with a main flow direction of the air in the channel.
- the exhaust gas recirculation apparatus according to the first embodiment (FIG. Fig. 1 ) comprises a designed as a perforated aluminum plate mounting member 2, which is set over a side opening of a compressed combustion air leading channel 1.
- the determination of the channel can be made arbitrarily, such as by gluing, positive recording or screwing.
- the mounting member has a central opening 2a, in which an exhaust pipe 3 made of a temperature-resistant material, such as stainless steel, is introduced, so that the exhaust gas (dashed arrow) flows into the channel for mixing with the combustion air (solid arrows).
- the position of the inflow into the channel 1 is upstream of a charge air cooler.
- a flange 4 is provided, by means of which the mounting member 2 and the exhaust pipe 3 are sealingly connected together. For this purpose, there is a seal 5 between flange 4 and mounting member 2.
- the flange 4 is by means of screws (not shown), the corresponding bolt holes 4a, 2b pass through the flange and mounting member, releasably secured.
- a coolant channel 6 is provided on it, which rotates the opening 2a.
- the coolant channel 6 is located on the opposite side of the flange 4 and is formed as a round pipe.
- the coolant channel 6 consists in the present case of aluminum and is soldered flat on the plate 2. Its (not shown) connection to a coolant circuit can be done by simply attaching hoses on its ends 6a.
- the coolant circuit may be, for example, the cooling circuit of the internal combustion engine or else a separate or connected low-temperature cooling circuit.
- the coolant channel 6 is here formed by a patch on the mounting plate, the mounting member 2 through open sheet metal part 6b, so that the mounting member 2 forms a part of the wall of the coolant channel 6.
- the molded part 6b is connected in a planar manner to the mounting member 2, wherein, for example, one of the parts may be formed from a solder-plated metal sheet.
- Fig. 6 shows by way of example, which course the sheet metal part 6b can give the coolant channel 6.
- terminals 6a are also provided for the coolant circuit.
- coolant channel 6 and flange 4 are arranged from the same side of the mounting member 2.
- the flange 4 sits with its seal 5 directly on the sheet metal part 6b, so that a particularly good and actively cooled insulation between flange 4 and 2 mounting member is given.
- Fig. 7a is shown that the sheet metal part can also be composed of several sections 6b, 6c.
- the coolant channel is shaped so that it includes the fastening screws 2b for the flange. As a result, these thermal bridges are actively cooled.
- the device according to the invention is constructed in the same unit with an indirect or coolant-flow intercooler 7 with air-flowed and coolant-flow-through flat tubes 9, which are in the immediate vicinity of the Exhaust pipe is located.
- a bottom 8 of the intercooler 7 is enlarged or formed so that it comprises an opening 8a for the exhaust pipe 3.
- a collector cover 10 is formed accordingly.
- a cooling channel 6 in a deep-drawn sheet metal part, for example.
- a cooling duct 6 is not necessarily provided in this embodiment, since an active cooling of the exhaust pipe 3 is already given due to the punching through of the collector.
- a coolant channel 6 is formed with a connection 6a, wherein the connection 6a is at the same time a connection of the intercooler to the coolant circuit.
- Fig. 11 shows an example Fig. 9, Fig. 10 Similar embodiment of the invention, in which the exhaust pipe 3 opens directly into a charge air cooler 7.
- a flange 4 of the exhaust pipe 3 is seated on a collector box 10 sealingly, wherein the collector box 10 rotates a swept by the exhaust pipe 3 and not flowed around by the coolant recess 11.
- the header box 10 may be considered as a whole as a coolant passage for the exhaust pipe.
- the protruding into the intercooler 7 exhaust pipe 3 is formed as a pipe section 12 having a plurality of radially directed exhaust ports 13 for the exhaust gas.
- the exhaust gas is divided into a plurality of small partial flows, so that local overheating of components of the charge air cooler 7 is avoided.
- such a pipe section 12 can also lead, while maintaining these advantages, into a simple channel 1, see, for example, the first exemplary embodiment.
- the pipe section 12 is closed at the end, being received with its closed end in a seal 14 in an opening of the bottom 8 opposite the inlet-side bottom 8 '.
- the pipe section can also protrude freely into the intercooler 7.
- a branching of the exhaust gas line into a plurality of, in the present case three, tube sections 12 occurs, as a result of which an even more distributed outflow of the exhaust gas is achieved.
- the branching takes place inside the charge air cooler behind the recess 11 or the inlet-side bottom 8.
- This example relates to a further development of an exhaust pipe with 3 with pipe section 12 as in the example Fig. 11 ,
- the outflow openings 13 are formed over the course of the pipe section 12 with increasing spatial density (see upper cut edge of the pipe section 12) or with an increasing cross-sectional area at the same distance (see lower cut edge of the pipe section 12).
- this achieves the result that a hydraulic outflow cross section per unit length of the pipe section 12 increases in the flow direction, so that the pressure drop of the exhaust gas associated with the outflow is compensated. Overall, this results in a more uniform mass flow of the outflowing exhaust gas over the length of the pipe section 12.
- Flow obstacles 15 over at least some the discharge openings 13 are provided.
- the flow obstacles 15 are designed as pushed-on sheet-metal rings which, at the points of overlap with the outflow openings 13, comprise dimensioned and erected tabs.
- the tabs or flow obstacles 15 are shaped differently and / or placed.
- Fig. 15 shows for clarity four sections through the four in Fig. 14 shown metal rings together with respective section of a plan view of the tabs.
- Fig. 16 the flows of charge air (solid lines) and from a pipe section 12 inflowing exhaust gas (dashed lines) are shown, wherein the outflow openings are each arranged at different angles to the plane of symmetry or main flow direction of the charge air.
- a too compact exhaust plume is formed at too small angles (e.g., 0 °) as well as too large angles (e.g., 180 °). This means a poorer mixing and the risk of local overheating of components of the charge air duct or intercooler.
- an angle to the geometric flow direction of the charge air (in the figures in each case horizontally from right to left) is selected for the outflow 13, which is between 45 ° and 135 °, preferably between 90 ° and 135 °.
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)
- Exhaust Silencers (AREA)
- Exhaust Gas After Treatment (AREA)
Claims (3)
- Dispositif de recyclage de gaz d'échappement pour un moteur à combustion interne, comprenant
une conduite de gaz d'échappement (3) servant au guidage de gaz d'échappement, et
un conduit (1) servant à l'alimentation d'air fourni au moteur à combustion interne,
où la conduite de gaz d'échappement (3) débouche dans le conduit (1),
caractérisé en ce que la conduite de gaz d'échappement (3), dans une zone de son débouché dans le conduit (1), est conçue comme au moins une partie tubulaire (12), où une pluralité d'ouvertures d'évacuation (13) prévues pour les gaz d'échappement est configurée le long de la partie tubulaire (12), où les ouvertures d'évacuation (13) sont réparties sur une longueur de la partie tubulaire (12), en fonction du nombre et / ou de la taille, de manière telle qu'une section d'évacuation hydraulique, par unité de longueur de la partie tubulaire (12), augmente dans la direction d'écoulement des gaz d'échappement, de sorte que la chute de pression des gaz d'échappement, liée à l'évacuation, est compensée, où la conduite de gaz d'échappement (3), dans la zone de son débouché, se ramifie en une pluralité de parties tubulaires (12). - Dispositif selon la revendication 1, caractérisé en ce que des obstacles à l'écoulement (15) sont disposés sur au moins certaines des ouvertures d'évacuation (13).
- Dispositif selon l'une des revendications 1 ou 2, caractérisé en ce que les ouvertures d'évacuation (13) sont orientées, au moins pour la plupart, suivant un angle d'évacuation compris entre 45° et 135°, en particulier entre 90° et 135°, par rapport à une direction principale d'écoulement de l'air dans le conduit (1).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP11179888.0A EP2402585B1 (fr) | 2009-02-12 | 2009-02-12 | Dispositif de recirculation des gaz d'échappement pour un moteur à combustion interne |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP11179888.0A EP2402585B1 (fr) | 2009-02-12 | 2009-02-12 | Dispositif de recirculation des gaz d'échappement pour un moteur à combustion interne |
EP09290103.2A EP2218897B1 (fr) | 2009-02-12 | 2009-02-12 | Dispositif de recirculation de gaz d'échappement pour un moteur à combustion interne |
Related Parent Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP09290103.2 Division | 2009-02-12 | ||
EP09290103.2A Division-Into EP2218897B1 (fr) | 2009-02-12 | 2009-02-12 | Dispositif de recirculation de gaz d'échappement pour un moteur à combustion interne |
EP09290103.2A Division EP2218897B1 (fr) | 2009-02-12 | 2009-02-12 | Dispositif de recirculation de gaz d'échappement pour un moteur à combustion interne |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2402585A1 EP2402585A1 (fr) | 2012-01-04 |
EP2402585B1 true EP2402585B1 (fr) | 2015-12-16 |
Family
ID=40848710
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP09290103.2A Not-in-force EP2218897B1 (fr) | 2009-02-12 | 2009-02-12 | Dispositif de recirculation de gaz d'échappement pour un moteur à combustion interne |
EP11179888.0A Not-in-force EP2402585B1 (fr) | 2009-02-12 | 2009-02-12 | Dispositif de recirculation des gaz d'échappement pour un moteur à combustion interne |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP09290103.2A Not-in-force EP2218897B1 (fr) | 2009-02-12 | 2009-02-12 | Dispositif de recirculation de gaz d'échappement pour un moteur à combustion interne |
Country Status (2)
Country | Link |
---|---|
US (1) | US8534267B2 (fr) |
EP (2) | EP2218897B1 (fr) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9080694B2 (en) * | 2011-06-22 | 2015-07-14 | The Boeing Company | Bulkhead fitting assembly |
US9222447B2 (en) * | 2012-07-26 | 2015-12-29 | Ford Global Technologies, Llc | Charge air cooler control system and method |
DE102014201935A1 (de) | 2014-02-04 | 2015-08-20 | Mahle International Gmbh | Anordnung zur Abgasrückführung |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6237336B1 (en) * | 1999-11-09 | 2001-05-29 | Caterpillar Inc. | Exhaust gas recirculation system in an internal combustion engine and method of using same |
Family Cites Families (25)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4134377A (en) * | 1977-09-29 | 1979-01-16 | Borg-Warner Corporation | Exhaust gas recirculation control valve and heat exchanger |
DE3531109A1 (de) | 1985-03-18 | 1987-03-12 | Rosenthal Ag | Sanitaeres absperr- oder mischventil sowie verfahren und vorrichtung zu seiner herstellung |
DE3511094A1 (de) * | 1985-03-27 | 1986-10-09 | Doduco KG Dr. Eugen Dürrwächter, 7530 Pforzheim | Vorrichtung zum zufuehren eines zusatzgasstroms in den ansaugkanal eines ottomotors |
DE3916466C2 (de) * | 1989-05-20 | 1996-03-14 | Audi Ag | Vorrichtung zur Abgasrückführung |
JP3430815B2 (ja) * | 1996-09-18 | 2003-07-28 | 日産自動車株式会社 | 内燃機関の排気還流装置 |
US5970960A (en) * | 1996-09-18 | 1999-10-26 | Nissan Motor Co., Ltd. | Exhaust gas recirculation system of internal combustion engine |
JP3528517B2 (ja) * | 1997-05-30 | 2004-05-17 | 日産自動車株式会社 | エンジンの排気ガス還流装置 |
FR2792968B1 (fr) * | 1999-04-29 | 2001-06-29 | Westaflex Automobile | Echangeur thermique en plastique et acier destine a etre dispose dans un circuit d'admission d'air d'un moteur, notamment dans un repartiteur comportant deux chambres et element du circuit d'admission d'air d'un moteur |
DE19933030A1 (de) * | 1999-07-15 | 2001-01-18 | Mann & Hummel Filter | Fluideinleitung für ein heißes Fluid in einer Hohlraumstruktur |
US6293265B1 (en) * | 1999-10-04 | 2001-09-25 | Siemens Canada Limited | Exhaust gas recirculation system |
US6311677B1 (en) * | 2000-03-30 | 2001-11-06 | Siemens Canada Limited | Engine mounting of an exhaust gas recirculation valve |
EP1152141B1 (fr) * | 2000-05-05 | 2005-02-09 | Siemens Aktiengesellschaft | Procédé et dispositif de recirculation de gaz d'échappement dans le courant d'air d'admission |
SE522310C2 (sv) * | 2001-03-02 | 2004-02-03 | Volvo Lastvagnar Ab | Anordning och förfarande för tillförsel av återcirkulerade avgaser |
FR2840363B1 (fr) * | 2002-06-04 | 2006-01-06 | Valeo Thermique Moteur Sa | Module d'echange de chaleur conforme pour envelopper un moteur de vehicule automobile |
FR2856747B1 (fr) | 2003-06-25 | 2005-09-23 | Valeo Thermique Moteur Sa | Module de refroidissement de l'air de suralimentation et des gaz d'echappement recircules d'un moteur a combustion interne de vehicule automobile. |
FR2856746B1 (fr) * | 2003-06-25 | 2007-10-26 | Valeo Thermique Moteur Sa | Module de refroidissement de l'air de suralimentation et des gaz recircules d'un moteur a combustion interne de vehicule automobile |
FR2864582B1 (fr) * | 2003-12-24 | 2006-03-17 | Valeo Thermique Moteur Sa | Module d'echange de chaleur pour la regulation de la temperature des gaz admis dans un moteur thermique de vehicule automobile |
DE102004019554C5 (de) * | 2004-04-22 | 2014-03-27 | Pierburg Gmbh | Abgasrückführsystem für eine Verbrennungskraftmaschine |
US7036493B1 (en) * | 2004-10-08 | 2006-05-02 | General Motors Corporation | Intake manifold for an internal combustion engine |
FR2879262B1 (fr) * | 2004-12-13 | 2007-04-06 | Renault Sas | Repartiteur d'air en matiere plastique pour moteur a combustion interne a recirculation de gaz d'echappement. |
JP4609243B2 (ja) * | 2005-08-30 | 2011-01-12 | 株式会社デンソー | 排気ガス再循環装置 |
US7210469B1 (en) * | 2005-10-24 | 2007-05-01 | International Engine Intellectual Property Company, Llc | Oxidation catalyst coating in a heat exchanger |
US7793498B2 (en) * | 2006-07-27 | 2010-09-14 | International Truck Intellectual Property Company, Llc | Integrated charge air cooler and exhaust gas recirculation mixer |
DE102006048485A1 (de) | 2006-10-11 | 2008-04-17 | Behr Gmbh & Co. Kg | Vorrichtung zur Ladeluftkühlung für einen Verbrennungsmotor, System mit einer Vorrichtung zur Ladeluftkühlung |
US7891345B2 (en) * | 2008-08-18 | 2011-02-22 | Caterpillar Inc. | EGR system having multiple discharge locations |
-
2009
- 2009-02-12 EP EP09290103.2A patent/EP2218897B1/fr not_active Not-in-force
- 2009-02-12 EP EP11179888.0A patent/EP2402585B1/fr not_active Not-in-force
-
2010
- 2010-02-11 US US12/704,374 patent/US8534267B2/en not_active Expired - Fee Related
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6237336B1 (en) * | 1999-11-09 | 2001-05-29 | Caterpillar Inc. | Exhaust gas recirculation system in an internal combustion engine and method of using same |
Also Published As
Publication number | Publication date |
---|---|
US20100199650A1 (en) | 2010-08-12 |
EP2218897B1 (fr) | 2014-07-09 |
EP2218897A1 (fr) | 2010-08-18 |
EP2402585A1 (fr) | 2012-01-04 |
US8534267B2 (en) | 2013-09-17 |
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