WO2003102404A1 - Ligne d'echappement de moteur a combustion interne comportant une regulation thermique des gaz d'echappement - Google Patents
Ligne d'echappement de moteur a combustion interne comportant une regulation thermique des gaz d'echappement Download PDFInfo
- Publication number
- WO2003102404A1 WO2003102404A1 PCT/FR2003/001656 FR0301656W WO03102404A1 WO 2003102404 A1 WO2003102404 A1 WO 2003102404A1 FR 0301656 W FR0301656 W FR 0301656W WO 03102404 A1 WO03102404 A1 WO 03102404A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- exhaust
- pipe
- gases
- exhaust gases
- fraction
- 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.)
- Ceased
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
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features
- F01N13/009—Exhaust or silencing apparatus characterised by constructional features having two or more separate purifying devices arranged in series
-
- 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
-
- 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
- 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
- F02M26/23—Layout, e.g. schematics
- F02M26/28—Layout, e.g. schematics with liquid-cooled heat exchangers
-
- 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
- F01N2570/00—Exhaust treating apparatus eliminating, absorbing or adsorbing specific elements or compounds
- F01N2570/14—Nitrogen oxides
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B37/00—Engines characterised by provision of pumps driven at least for part of the time by exhaust
-
- 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
- F02M26/42—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories having two or more EGR passages; EGR systems specially adapted for engines having two or more cylinders
- F02M26/44—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories having two or more EGR passages; EGR systems specially adapted for engines having two or more cylinders in which a main EGR passage is branched into multiple passages
-
- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
Definitions
- the invention relates to internal combustion engines, in particular for motor vehicles.
- It relates to an exhaust and gas recirculation line of an internal combustion engine, and more particularly to an exhaust line comprising an exhaust pipe, a catalytic converter and a catalysis element intended to trap oxides of nitrogen, mounted in series on the exhaust pipe.
- This exchanger is generally of the liquid-gas type and is connected to the engine cooling circuit.
- the present invention relates to an internal combustion engine exhaust line which overcomes this drawback thanks to the presence of thermal regulation of the exhaust gases.
- the exhaust line comprises a recycling pipe connected directly or indirectly to the exhaust pipe to recycle a fraction of the exhaust gases, as well as an exchanger heat to cool the recycled fraction of the exhaust gases, this cooling exchanger being interposed between the catalytic converter and the catalysis element. Thanks to this characteristic, the exchanger cools the recycled exhaust gases. This makes it possible, in a conventional manner, to lower the temperature of the combustion gases and, consequently, the level of emission of nitrogen oxides in these exhaust gases. But in addition, the presence of the exchanger also cools the non-recycled exhaust gases which pass through the catalysis element intended to trap the nitrogen oxides.
- the catalysis element can be used in a greater temperature range of the exhaust gases, or even whatever the temperature of the latter. It is therefore possible to run the engine in a lean mixture more often, or even whenever it is desirable to reduce fuel consumption.
- the cooling exchanger is mounted in series on the exhaust pipe.
- the exhaust line comprises a bypass comprising an exhaust gas deflection pipe which brings a fraction or all of the exhaust gases to the exchanger for cooling the recycled gases and a exhaust pipe return of the exhaust gases which brings the recycled fraction of the exhaust gases to the exhaust pipe.
- a control valve is interposed between the start connection of the exhaust gas deflection pipe and the arrival connection of the exhaust gas return pipe. This allows precise management of the flow rate of the recycled fraction of exhaust gases according to the needs of the engine.
- Figure 1 illustrates a first embodiment of the invention, in which the exhaust gas cooling exchanger is mounted directly on the exhaust pipe;
- Figure 2 illustrates a second embodiment of the invention, in which the exchanger for cooling the exhaust gases is offset relative to the exhaust pipe.
- the internal combustion engine 1 comprises an intake manifold 3 which is supplied with fresh air by a pipe 5 and an exhaust pipe 7 connected to an exhaust pipe 9 making it possible to convey the gases d exhaust to an exterior exhaust known as "silent" (not shown), which discharges the exhaust gases into the atmosphere.
- an intake manifold 3 which is supplied with fresh air by a pipe 5 and an exhaust pipe 7 connected to an exhaust pipe 9 making it possible to convey the gases d exhaust to an exterior exhaust known as "silent" (not shown), which discharges the exhaust gases into the atmosphere.
- a turbocharger 11 makes it possible to compress the air admitted into the engine in order to increase the specific power of the latter.
- the turbocharger 11 comprises a drive turbine actuated by the energy of the exhaust gases and, therefore, mounted on the exhaust pipe 9.
- a catalytic oxidation pot 13 is mounted in series on the exhaust pipe 9.
- a catalysis element 15 intended to trap nitrogen oxides is also mounted on the exhaust pipe 9 downstream of the catalytic converter 13 according to the direction of exhaust of the gases.
- a heat exchanger 17 is interposed between the catalytic converter 13 and the catalysis element 15.
- the exchanger 17 makes it possible to cool the exhaust gases which exit from the catalytic converter 13. It is a liquid-gas type exchanger, it is cooled by the water from the engine cooling system.
- a pipe 19 brings the water from the cooling circuit to the exchanger 17, as shown diagrammatically by the arrow 20. After exchange of heat with the exhaust gases, the water leaves the exchanger by a pipe 21 , as shown by the arrow 22.
- a recycling pipe 23 connected to the exchanger 17 makes it possible to take a fraction of the cooled exhaust gases in the exchanger 17 and to reintroduce them into the exhaust pipe 3 in order to mix them fresh gas from the pipeline 5.
- An impoverished mixture is thus produced which makes it possible, as explained above, to lower the combustion temperature of the engine and, consequently, the level of emission of nitrogen oxides.
- a valve 25 mounted on the recycling pipe makes it possible to adjust the fraction of exhaust gas recycled in the engine.
- FIG 2 another embodiment of an exhaust line of the invention. It differs from the first embodiment shown in Figure 1 by the fact that the exhaust gas cooling exchanger 17 is not mounted in series on the exhaust pipe 9, but offset relative to this pipe . In particular, in the example shown, this exchanger 17 is placed in the immediate vicinity of the engine, which makes it possible to considerably shorten the length of the recycling pipe 23.
- the exchanger 17 is cooled by the water from the engine cooling circuit which enters via the pipe 9, as shown by the arrow 20, and which exits through the pipe 21, as shown by the arrow 22.
- the cooling exchanger 17 is connected to the exhaust pipe 19 by a deflection pipe 27 which makes it possible to bring the recycled fraction of the exhaust gases to the inlet of the exchanger.
- a return line 29 makes it possible to return the cooled gases to the exhaust line 9.
- a control valve 31 is interposed between the start connection of the deflection pipe 27 and the arrival connection of the pipe 29.
- the control valve 31 makes it possible to adjust the recycled fraction of the exhaust gases. When closed, all of the gases flow through the deflection line and the return line. When in the fully open position, all of the exhaust gases are routed directly to the outside without being recycled to the engine.
- the regulation valve 31 also makes it possible to establish a back pressure at the exhaust which causes a rise in the exhaust temperature and therefore makes it possible to recover more heat.
- turbocharger 11 which increases the amount air admitted into the engine / the invention also applies to an exhaust line for an engine without such a turbocharger.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Exhaust Gas After Treatment (AREA)
- Exhaust-Gas Circulating Devices (AREA)
Abstract
Description
Claims
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2003255624A AU2003255624A1 (en) | 2002-06-04 | 2003-06-02 | Exhaust system for an internal combustion engine comprising a thermal regulation of the exhaust gases |
| JP2004509265A JP2005528554A (ja) | 2002-06-04 | 2003-06-02 | 排気の熱制御装置を含む内燃エンジンの排気ライン |
| DE10392766.2T DE10392766B4 (de) | 2002-06-04 | 2003-06-02 | Abgasleitung für einen Brennkraftmotor mit einer thermischen Regelung der Abgase |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0206856 | 2002-06-04 | ||
| FR0206856A FR2840355B1 (fr) | 2002-06-04 | 2002-06-04 | Ligne d'echappement de moteur a combustion interne comportant une regulation thermique des gaz d'echappement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2003102404A1 true WO2003102404A1 (fr) | 2003-12-11 |
Family
ID=29558956
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/FR2003/001656 Ceased WO2003102404A1 (fr) | 2002-06-04 | 2003-06-02 | Ligne d'echappement de moteur a combustion interne comportant une regulation thermique des gaz d'echappement |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JP2005528554A (fr) |
| AU (1) | AU2003255624A1 (fr) |
| DE (1) | DE10392766B4 (fr) |
| FR (1) | FR2840355B1 (fr) |
| WO (1) | WO2003102404A1 (fr) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007024022A (ja) * | 2005-07-15 | 2007-02-01 | Sango Co Ltd | 排気浄化装置 |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102005040612A1 (de) * | 2005-08-27 | 2007-03-01 | Behr Gmbh & Co. Kg | Abgaswärmeübertrager |
| EP2302190B1 (fr) | 2009-09-25 | 2013-12-25 | Behr GmbH & Co. KG | Système de refoulement des gaz d'échappement |
| JP6041690B2 (ja) * | 2013-01-31 | 2016-12-14 | ダイハツ工業株式会社 | Egr装置付き内燃機関 |
| US10024275B2 (en) * | 2016-01-12 | 2018-07-17 | Ford Global Technologies Llc | Condensate management system for an exhaust gas cooler and heat recovery device |
| JP2018003719A (ja) * | 2016-07-04 | 2018-01-11 | 株式会社Soken | 冷却システム及び冷却システムの制御装置 |
| CN116576689A (zh) * | 2023-05-07 | 2023-08-11 | 江苏冰澳机械制造有限公司 | 一种热风回收凝蒜素挥发油板翅空冷器 |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999009307A1 (fr) * | 1997-08-13 | 1999-02-25 | Johnson Matthey Public Limited Company | Procede ameliore servant a limiter les emissions d'echappement |
| WO2000077353A2 (fr) * | 1999-06-15 | 2000-12-21 | Johnson Matthey Public Limited Company | Systeme antipollution ameliore |
| DE10052953A1 (de) * | 1999-10-28 | 2001-07-19 | Avl List Gmbh | Fremdgezündete Brennkraftmaschine |
| EP1195510A2 (fr) * | 2000-10-04 | 2002-04-10 | Toyota Jidosha Kabushiki Kaisha | Moteur à allumage par compression |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2770582B1 (fr) * | 1997-10-31 | 2000-01-28 | Valeo Thermique Moteur Sa | Ligne d'echappement et de recirculation des gaz pour moteur de vehicule automobile |
| AT2217U3 (de) * | 1997-11-20 | 1999-01-25 | Avl List Gmbh | Brennkraftmaschine mit einem einlasssystem und einem auslasssystem |
-
2002
- 2002-06-04 FR FR0206856A patent/FR2840355B1/fr not_active Expired - Lifetime
-
2003
- 2003-06-02 AU AU2003255624A patent/AU2003255624A1/en not_active Abandoned
- 2003-06-02 WO PCT/FR2003/001656 patent/WO2003102404A1/fr not_active Ceased
- 2003-06-02 DE DE10392766.2T patent/DE10392766B4/de not_active Expired - Fee Related
- 2003-06-02 JP JP2004509265A patent/JP2005528554A/ja active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999009307A1 (fr) * | 1997-08-13 | 1999-02-25 | Johnson Matthey Public Limited Company | Procede ameliore servant a limiter les emissions d'echappement |
| WO2000077353A2 (fr) * | 1999-06-15 | 2000-12-21 | Johnson Matthey Public Limited Company | Systeme antipollution ameliore |
| DE10052953A1 (de) * | 1999-10-28 | 2001-07-19 | Avl List Gmbh | Fremdgezündete Brennkraftmaschine |
| EP1195510A2 (fr) * | 2000-10-04 | 2002-04-10 | Toyota Jidosha Kabushiki Kaisha | Moteur à allumage par compression |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007024022A (ja) * | 2005-07-15 | 2007-02-01 | Sango Co Ltd | 排気浄化装置 |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2005528554A (ja) | 2005-09-22 |
| AU2003255624A1 (en) | 2003-12-19 |
| FR2840355B1 (fr) | 2006-02-17 |
| DE10392766B4 (de) | 2014-01-09 |
| FR2840355A1 (fr) | 2003-12-05 |
| DE10392766T5 (de) | 2005-06-16 |
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