WO2012168042A1 - Brennkraftmaschine mit zumindest einer katalysatoreinheit - Google Patents
Brennkraftmaschine mit zumindest einer katalysatoreinheit Download PDFInfo
- Publication number
- WO2012168042A1 WO2012168042A1 PCT/EP2012/058978 EP2012058978W WO2012168042A1 WO 2012168042 A1 WO2012168042 A1 WO 2012168042A1 EP 2012058978 W EP2012058978 W EP 2012058978W WO 2012168042 A1 WO2012168042 A1 WO 2012168042A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- catalyst
- exhaust gas
- internal combustion
- combustion engine
- engine according
- Prior art date
Links
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
-
- 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
- F01N3/24—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 constructional aspects of converting apparatus
- F01N3/28—Construction of catalytic reactors
- F01N3/2882—Catalytic reactors combined or associated with other devices, e.g. exhaust silencers or other exhaust purification devices
-
- 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
- F01N2240/00—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being
- F01N2240/02—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being a heat exchanger
-
- 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
- F01N2450/00—Methods or apparatus for fitting, inserting or repairing different elements
- F01N2450/30—Removable or rechangeable blocks or cartridges, e.g. for filters
-
- 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
- F02M26/22—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with coolers in the recirculation passage
-
- 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
- F02M26/35—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with means for cleaning or treating the recirculated gases, e.g. catalysts, condensate traps, particle filters or heaters
Definitions
- an exhaust gas heat exchanger in particular an exhaust gas cooler for exhaust gas recirculation in motor vehicles with a single diesel oxidation catalyst, which is arranged in the inlet connection of the exhaust gas heat exchanger known.
- the catalyst is connected upstream of the exhaust gas cooler.
- the substrate of this diesel oxidation catalyst fills the entire cross-section of the inlet nozzle of the exhaust gas heat exchanger.
- no homogenous flow profile is created by the diffuser shape of the inlet nozzle, so that the edge regions of the diffuser can hardly be flowed through.
- the diesel oxidation catalyst causes a large flow resistance due to the design. Consequently, this concept is particularly relevant with regard to the installation of the diesel oxidation catalytic converter. lysators in the inlet connection of the exhaust gas heat exchanger in large numbers unfavorable and therefore poorly suited.
- DE 10 2005 014 385 A1 describes an exhaust gas cooler for exhaust gas recirculation in motor vehicles with heat-traversable by exhaust gas and flow around a heat transfer channels, which open into a distribution and / or collection chamber, and with a arranged in the distribution and / or collection chamber flow which has an exhaust gas inlet surface, an exhaust gas outlet surface and a plurality of flow channels extending from the exhaust gas inlet surface to the exhaust gas outlet surface.
- the flow guide is formed by a catalyst.
- an exhaust gas reaction device for an internal combustion engine which has an arrangement in the exhaust passage of several longitudinally extending, formed by mutually parallel, standing in mutual contact walls channels extending over the entire length of the reaction device and the walls thereof are thin in relation to the channel width.
- the length of the exhaust gas reaction device is between 30 mm and 100 mm, which indicates that it is a small engine, for example a vehicle engine.
- DE 195 23 532 AI shows a catalyst arrangement with two- or multi-stranded exhaust system for exhaust systems of motor vehicles, wherein the exhaust gas is performed at least in partial areas of the exhaust system in at least two separate systems.
- at least one catalytic converter is arranged with axially extending channels, wherein the catalytic converter is formed in the form of a single honeycomb body having at least one end face at least one dividing the cross-section of the housing partition which at least almost sealingly against the end face of the honeycomb body is introduced.
- oxidation catalysts require a certain volume, which depends on the size of the engine to efficiently convert the oxidation.
- This volume of the oxidation catalyst is usually achieved over a large length and over a small cross-section, since a larger cross-sectional area of the oxidation catalyst due to manufacturing, installation conditions and other Baubelrison whatsoever is not possible.
- the length either by a long catalyst body with a small cross-section or through several along the longitudinal axis of the catalyst system in series successively arranged catalysts, which are known from the catalyst technology achieved. This leads to a greater pressure loss between the inlet and outlet of the catalyst unit.
- the plurality of catalysts arranged in series behind the longitudinal axis are realized by structurally complex and elaborately designed solutions.
- the present invention seeks to provide an internal combustion engine with at least one catalyst unit for cleaning the resulting during operation of the internal combustion engine exhaust gases, wherein the pressure loss between the inlet and outlet of the catalyst unit is reduced and thus the influence on the Engine power is lower. Furthermore, the catalyst unit should be easy to install. In addition, an optimized flow through the catalyst unit should be given.
- the internal combustion engine according to the invention has considerable advantages over the prior art.
- the inventive design of the catalyst unit of the internal combustion engine with two or more parallel-flow catalyst body, which are arranged densest packed over the cross section a lower pressure drop between the catalyst inlet and the catalyst outlet and a smaller impact on the engine performance achieved.
- At least one catalyst unit is at least one, preferably all catalyst body, in particular as an oxidation catalyst, preferably as selseloxidationskatalysator formed.
- the catalyst bodies are arranged substantially free of forces in the exhaust gas flow path. Since the catalyst bodies are arranged substantially free of forces in the catalyst unit, no great demands are placed on the attachment of the catalyst body. Another advantage of this arrangement is that no thermal stress induction occurs due to the force-free arrangement. Under force-free here is a stress-free installation of the catalyst body, for example by positive locking - without welding or screw connection - to understand. The catalyst body can be inserted without tension, for example, in the exhaust gas flow path.
- At least one group preferably all catalyst bodies, starts from a single plane.
- the length of the catalyst unit is shortened. This leads to a lower pressure loss and a smaller impact on engine performance.
- the catalyst bodies are arranged in the exhaust gas flow path in a catalyst housing substantially free of force.
- a catalyst housing has the advantage that the catalyst unit is thereby easy to apply as a finished module.
- the plane of the longitudinal axes of the catalyst body forms an angle with the longitudinal axis of the exhaust gas heat exchanger. This allows a more compact and space-saving design.
- the plane of the longitudinal axes of the catalyst body forms an angle with the longitudinal axis of the exhaust gas recirculation line. The advantage of this embodiment is that a compact design is ensured.
- the catalyst unit can be arranged at least predominantly in the exhaust gas recirculation line or at least predominantly be arranged in the exhaust gas heat exchanger.
- Figure 1 is a schematic view of an exhaust aftertreatment device with a catalyst unit disposed in a catalyst housing.
- FIG. 2a is a schematic representation of the exhaust aftertreatment device in a section along the line Ila-IIa in FIG. 2;
- Fig. 4 is a schematic representation of a circular cross-sectional shape of
- 9a is a schematic representation of a cross section of the catalyst unit with a shape of a star
- FIG. 10 shows a schematic view of an exhaust gas aftertreatment device with a catalyst unit arranged in the exhaust gas recirculation line
- FIG. 11 shows a schematic view of an exhaust gas aftertreatment device with a catalyst unit arranged in the exhaust gas heat exchanger inlet connection
- FIG. 12 is a schematic view of an exhaust aftertreatment device with a catalyst unit, wherein the angle between the longitudinal axis of the catalyst body and the longitudinal axis of the exhaust gas heat exchanger is 0 °;
- the Fig. 1 schematically illustrates an exemplary embodiment of the exhaust aftertreatment device 10 according to the invention of an internal combustion engine, not shown, which is designed as a large diesel engine.
- the exhaust aftertreatment device 10 includes an exhaust gas recirculation line 6 and a catalyst unit 1 disposed upstream of an exhaust heat exchanger 4 with an exhaust heat exchanger inlet port 3. The direction of flow is indicated by the arrow EGR.
- the catalyst unit 1 is arranged in front of the exhaust gas heat exchanger 4 expediently.
- the catalyst bodies 2a, 2b, 2c are designed as diesel oxidation catalysts. Their end faces 9 are each arranged in a common plane 8 according to Figures 3 and 4. As shown in FIG. 2a, the catalyst bodies 2a, 2b, 2c touch tangentially and are sealed gas-tight in the catalyst unit 1. They have a short length L, which allows a low pressure loss in the individual catalyst bodies 2a, 2b and 2c.
- the catalyst unit 1 is welded in a deflection region of the exhaust gas flow path, which is designed as a 180 ° deflection.
- the exhaust gas recirculation line 6 and the exhaust gas heat exchanger 4 are expediently connected to one another via a flange 7 such that the exhaust gas recirculation line 6 is connected to the catalyst receiving section 3 b of the exhaust gas heat exchanger inlet connection 3.
- the diffuser portion 3a of the exhaust heat exchanger inlet nozzle 3 is connected to the exhaust gas heat exchanger 4 by means of another flange.
- FIG. 12 a schematically illustrated exhaust gas aftertreatment device 10 according to the invention of an internal combustion engine, not shown, which is designed as a large diesel engine is shown.
- the internal combustion engine has a catalytic converter unit 1, which contains three catalytic converter bodies 2 a, 2 b, 2 c, and an exhaust gas recirculation line. 6 and an exhaust gas heat exchanger 4, wherein the exhaust gas heat exchanger 4 is formed as an exhaust gas cooler.
- the catalyst unit 1 is disposed upstream of the exhaust gas recirculation line 6 in an exhaust gas flow path, in particular, in the exhaust heat exchanger inlet port 3 in its catalyst accommodating portion 3b.
- the exhaust gas recirculation line 6 and the exhaust gas heat exchanger inlet connection 3 are expediently connected to one another via a flange 7 such that the exhaust gas recirculation line 6 is connected to the catalyst receiving section 3b of the exhaust gas heat exchanger inlet connection 3.
- the diffuser portion 3 a of the exhaust heat exchanger inlet nozzle 3 is connected to the exhaust gas heat exchanger 4.
- the angle ⁇ between at least one longitudinal axis 11 of the catalyst body 2a, 2b and 2c and the longitudinal axis 12 of the exhaust gas heat exchanger 1 is about 0 °.
- the direction of flow is indicated by the arrow EGR.
- the catalyst bodies 2 a, 2 b, 2 c are designed as Dieseloxidationskatalysa- tors and over the cross-section densest packed forces arranged. Their end faces 9 are each in a common plane 8, as shown in FIGS. 3 and FIG. 4, arranged.
- the catalyst bodies 2a, 2b, 2c touch tangentially and are gas-tight welded in the catalyst unit 1.
- FIG. 13a schematically shows an exhaust gas aftertreatment device 10 according to the invention of an internal combustion engine, not shown, which is configured as a large diesel engine.
- the internal combustion engine has a catalytic converter unit 1 for cleaning the exhaust gases produced during operation of an internal combustion engine, which contains three catalytic converter bodies 2a, 2b, 2c, and an exhaust gas recirculation line 6 and an exhaust gas heat exchanger 4.
- the catalytic converter unit 1 is upstream of the exhaust gas heat exchanger 4, which is designed as an exhaust gas cooler is arranged in an exhaust gas flow path, in particular an exhaust gas recirculation line 6, wherein the three parallel flowed through the catalyst body 2 a, 2 b, 2 c over the cross-section densest packed forces are arranged.
- the catalyst unit 1 is partially disposed in the exhaust gas recirculation line 6 and partly in the exhaust gas heat exchanger inlet port 3 in its catalyst receiving section 3b.
- the direction of flow is indicated by the arrow EGR.
- the catalyst unit 1 is welded in a deflection region of the exhaust gas flow path.
- the exhaust gas recirculation line 6 and the exhaust gas heat exchanger 4 are expediently connected to one another via a flange 7 such that the exhaust gas recirculation line 6 is connected to the catalyst receiving section 3b of the exhaust gas heat exchanger inlet connection 3.
- the angle ⁇ between at least one longitudinal axis 11 of the catalyst bodies 2a, 2b and 2c, which are designed as diesel oxidation catalysts, and the longitudinal axis 12 of the exhaust gas heat exchanger 4 is less than about 90 °, in particular less than about 60 °.
- the size of the angle ⁇ is selected depending on the installation conditions.
- FIG. 1 In another exemplary embodiment of the exhaust gas aftertreatment device 10 according to the invention of an internal combustion engine, not shown, which is designed as a large diesel engine, is shown in FIG.
- the angle ⁇ between at least one longitudinal axis 11 of the catalyst body 2a, 2b and 2c, which are designed as diesel oxidation catalysts, and the longitudinal axis 12 of the exhaust gas heat exchanger 4 is greater than about 90 °, preferably 90 ° ⁇ a ⁇ 180 °, in particular greater than about 120 °.
- the invention is not limited to the embodiments described above, but rather transferable to other internal combustion engines. It is also possible to combine corresponding measures of the various embodiments with each other.
- the invention is generally applicable to internal combustion engines.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Gas After Treatment (AREA)
- Exhaust-Gas Circulating Devices (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US14/124,254 US20140216018A1 (en) | 2011-06-06 | 2012-05-15 | Internal combustion engine having at least one catalyst unit |
CN201280035532.8A CN103764963A (zh) | 2011-06-06 | 2012-05-15 | 具有至少一个催化转化单元的内燃机 |
DE112012002366.8T DE112012002366A5 (de) | 2011-06-06 | 2012-05-15 | Brennkraftmaschine mit zumindest einer Katalysatoreinheit |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ATA835/2011A AT511548A1 (de) | 2011-06-06 | 2011-06-06 | Brennkraftmaschine mit zumindest einer katalysatoreinheit |
ATA835/2011 | 2011-06-06 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2012168042A1 true WO2012168042A1 (de) | 2012-12-13 |
Family
ID=46062293
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2012/058978 WO2012168042A1 (de) | 2011-06-06 | 2012-05-15 | Brennkraftmaschine mit zumindest einer katalysatoreinheit |
Country Status (5)
Country | Link |
---|---|
US (1) | US20140216018A1 (de) |
CN (1) | CN103764963A (de) |
AT (1) | AT511548A1 (de) |
DE (1) | DE112012002366A5 (de) |
WO (1) | WO2012168042A1 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6263799B2 (ja) * | 2014-09-30 | 2018-01-24 | 本田技研工業株式会社 | 車両用内燃機関における排気系構造 |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2635725A1 (de) | 1975-08-18 | 1977-03-03 | Honda Motor Co Ltd | Abgasreaktionsvorrichtung fuer eine brennkraftmaschine |
JPH0693850A (ja) * | 1992-09-11 | 1994-04-05 | Hitachi Ltd | 収納容器 |
DE19523532A1 (de) | 1995-06-28 | 1997-01-02 | Emitec Emissionstechnologie | Katalysatoranordnung mit zwei- oder mehrsträngiger Abgasführung |
JP2003065162A (ja) * | 2001-08-22 | 2003-03-05 | Toyota Motor Corp | Egrシステム |
WO2005028848A1 (de) | 2003-09-18 | 2005-03-31 | Behr Gmbh & Co. Kg | Abgaswärmeübertrager, insbesondere abgaskühler für abgasrückführung in kraftfahrzeugen |
DE102005014385A1 (de) | 2005-03-24 | 2006-09-28 | Emitec Gesellschaft Für Emissionstechnologie Mbh | Abgaswärmeübertrager, insbesondere Abgaskühler für Abgasrückführung in Kraftfahrzeugen |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS52115921A (en) * | 1976-03-26 | 1977-09-28 | Nissan Motor Co Ltd | Fuel quality improving device for quality improved gas engine |
JPH01125512A (ja) * | 1987-11-09 | 1989-05-18 | Shin Caterpillar Mitsubishi Ltd | ディーゼルエンジンの排出微粒子処理装置 |
JPH0814033A (ja) * | 1994-06-24 | 1996-01-16 | Caterpillar Inc | 内燃エンジン用モジュール触媒コンバータとマフラー |
DE19955013B4 (de) * | 1999-11-16 | 2008-04-03 | Volkswagen Ag | Abgasanlage einer Verbrennungskraftmaschine |
DE60107765T2 (de) * | 2000-06-29 | 2005-05-12 | Toyota Jidosha K.K., Toyota | Vorrichtung zur Reinigung des Abgases einer Brennkraftmaschine |
DE10356000B4 (de) * | 2003-11-27 | 2006-01-12 | J. Eberspächer GmbH & Co. KG | Schalldämpfer mit integriertem Katalysator |
-
2011
- 2011-06-06 AT ATA835/2011A patent/AT511548A1/de not_active Application Discontinuation
-
2012
- 2012-05-15 WO PCT/EP2012/058978 patent/WO2012168042A1/de active Application Filing
- 2012-05-15 US US14/124,254 patent/US20140216018A1/en not_active Abandoned
- 2012-05-15 CN CN201280035532.8A patent/CN103764963A/zh active Pending
- 2012-05-15 DE DE112012002366.8T patent/DE112012002366A5/de not_active Withdrawn
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2635725A1 (de) | 1975-08-18 | 1977-03-03 | Honda Motor Co Ltd | Abgasreaktionsvorrichtung fuer eine brennkraftmaschine |
JPH0693850A (ja) * | 1992-09-11 | 1994-04-05 | Hitachi Ltd | 収納容器 |
DE19523532A1 (de) | 1995-06-28 | 1997-01-02 | Emitec Emissionstechnologie | Katalysatoranordnung mit zwei- oder mehrsträngiger Abgasführung |
JP2003065162A (ja) * | 2001-08-22 | 2003-03-05 | Toyota Motor Corp | Egrシステム |
WO2005028848A1 (de) | 2003-09-18 | 2005-03-31 | Behr Gmbh & Co. Kg | Abgaswärmeübertrager, insbesondere abgaskühler für abgasrückführung in kraftfahrzeugen |
DE102005014385A1 (de) | 2005-03-24 | 2006-09-28 | Emitec Gesellschaft Für Emissionstechnologie Mbh | Abgaswärmeübertrager, insbesondere Abgaskühler für Abgasrückführung in Kraftfahrzeugen |
Also Published As
Publication number | Publication date |
---|---|
DE112012002366A5 (de) | 2014-05-08 |
AT511548A1 (de) | 2012-12-15 |
US20140216018A1 (en) | 2014-08-07 |
CN103764963A (zh) | 2014-04-30 |
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