EP0104524B1 - Dispositif de recyclage des gaz d'échappement dans un moteur à combustion interne - Google Patents
Dispositif de recyclage des gaz d'échappement dans un moteur à combustion interne Download PDFInfo
- Publication number
- EP0104524B1 EP0104524B1 EP83108949A EP83108949A EP0104524B1 EP 0104524 B1 EP0104524 B1 EP 0104524B1 EP 83108949 A EP83108949 A EP 83108949A EP 83108949 A EP83108949 A EP 83108949A EP 0104524 B1 EP0104524 B1 EP 0104524B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- exhaust gas
- line
- exhaust
- combustion engine
- recirculation
- 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.)
- Expired
Links
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
- F02M26/42—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
-
- 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
- F02M26/50—Arrangements or methods for preventing or reducing deposits, corrosion or wear caused by impurities
Definitions
- the invention relates to a device according to the preamble of the main claim.
- a bypass line leads from the exhaust side of the internal combustion engine to the intake side.
- a valve is provided in the bypass line, which is controlled according to predetermined criteria for setting the return rate.
- the exhaust gas recirculation line is usually quite short for structural reasons alone. In engines with a cross-flow cylinder head, however, this construction requires a relatively long line from the exhaust side to the intake side. If the recirculation rate is set relatively low, for example when driving at full load, the valve in the exhaust gas recirculation line is closed. Then the exhaust gas cools down in the return line and thus condensate is formed. If the recirculation rate is then increased again, the condensate accumulated in the recirculation line reaches the intake manifold of the engine and, together with the cooled exhaust gas fraction from the dead volume of the recirculation line, leads to an undefined transition behavior of the internal combustion engine.
- the device according to the invention with the characterizing features of the main claim has the advantage that a formation of condensate is avoided, so that the corrosion in the exhaust gas recirculation line is reduced and that, finally, the transition behavior of the internal combustion engine when changing the recirculation rate and thus the exhaust gas quality is improved.
- the underpressure required for purging the exhaust gas recirculation line is generated by the existing means in that the return line is guided to connect the front and rear silencers, a point which has a lower pressure than the exhaust gas side of the internal combustion engine.
- the purging is further improved in that a venturi tube is arranged in the pipe section between the front and rear silencer.
- the invention is illustrated in the drawing and is explained in more detail in the description below.
- the single figure shows a basic illustration of an embodiment of a device according to the invention.
- 10 denotes the cylinder head of an internal combustion engine, the intake side of which consists of an intake pipe 11 with a throttle valve 12 and an intake manifold 13. Accordingly, the exhaust side consists of an exhaust manifold 14, which leads to a front silencer 15, a pipe 16 and a rear silencer 17.
- the exhaust side of the cylinder head 10 is connected to the intake side via an exhaust gas recirculation line. This initially consists of a first line 18 which is directly connected to the exhaust gas outlet of the cylinder head 10 and merges into a second line 19. The second line 19 leads to an exhaust gas recirculation valve 20, from which a third line 21 extends to the intake manifold 13.
- the line routing shown is only meant by way of example and can also be designed differently in terms of construction, for example in that the exhaust gas recirculation valve 20 is arranged directly in the intake manifold 13.
- a flushing line 22 leads from the connection point of the first line 18 and the second line 19 to the connecting pipe 16 between the front and rear silencers 15, 17.
- the amount of exhaust gas brought up to the exhaust gas recirculation valve 20 is larger than that required for the actual recirculation by appropriate dimensioning of the lines 18, 19.
- the excess part of the exhaust gas now flows back through the purge line 22 into the exhaust.
- the purge line 22 always ensures an almost complete flow through the exhaust-side return line section.
- the purge line 22 it would also be possible to lead the purge line 22 directly into the open, since the required pressure conditions would then also exist, but this would cause noise problems, since the exhaust gas flowing out of the purge line 22 would not be soundproofed.
- the embodiment shown in the figure is particularly expedient, since the rear silencer 17 provides sufficient sound absorption. Since the purge line 22 also has a smaller cross section than the normal exhaust line, the damping effect of the rear silencer 17 is also sufficient.
- the pipe 16 can be provided with a Venturi tube 23 in a further embodiment of the invention, so that the vacuum required for the purge in the pipe 16 is ensured.
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)
Claims (3)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19823235397 DE3235397A1 (de) | 1982-09-24 | 1982-09-24 | Einrichtung zum rueckfuehren von abgas einer brennkraftmaschine |
DE3235397 | 1982-09-24 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0104524A1 EP0104524A1 (fr) | 1984-04-04 |
EP0104524B1 true EP0104524B1 (fr) | 1986-09-10 |
Family
ID=6174067
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP83108949A Expired EP0104524B1 (fr) | 1982-09-24 | 1983-09-10 | Dispositif de recyclage des gaz d'échappement dans un moteur à combustion interne |
Country Status (5)
Country | Link |
---|---|
US (1) | US4467774A (fr) |
EP (1) | EP0104524B1 (fr) |
JP (1) | JPS5979061A (fr) |
AU (1) | AU558920B2 (fr) |
DE (2) | DE3235397A1 (fr) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3025332B2 (ja) * | 1991-03-28 | 2000-03-27 | マツダ株式会社 | エンジンの排気ガス還流装置 |
US5241940A (en) * | 1993-01-07 | 1993-09-07 | Ford Motor Company | Automotive EGR system |
JP3852142B2 (ja) * | 1996-10-24 | 2006-11-29 | いすゞ自動車株式会社 | 排気還流装置 |
US6659090B2 (en) * | 2002-01-10 | 2003-12-09 | Detroit Diesel Corporation | System for purging exhaust gases from exhaust gas recirculation system |
JP4526395B2 (ja) * | 2004-02-25 | 2010-08-18 | 臼井国際産業株式会社 | 内燃機関の過給システム |
FR2885178A1 (fr) * | 2005-04-27 | 2006-11-03 | Renault Sas | Groupe motopropulseur comportant un circuit de nettoyage d'un circuit de recirculation des gaz d'echappement |
US7886531B2 (en) * | 2007-09-28 | 2011-02-15 | Caterpillar Inc | Exhaust system having outlet-located moisture entrainment device |
US20110214648A1 (en) * | 2011-03-03 | 2011-09-08 | New Vision Fuel Technology, Inc. | Passive re-induction apparatus, system, and method for recirculating exhaust gas in gasoline and diesel engines |
US8276571B2 (en) | 2011-03-03 | 2012-10-02 | New Vision Fuel Technology, Inc. | Passive re-induction apparatus, system, and method for recirculating exhaust gas in gasoline and diesel engines |
US8490606B2 (en) * | 2011-03-03 | 2013-07-23 | New Vision Fuel Technology, Inc. | Passive re-induction apparatus, system, and method for recirculating exhaust gas in gasoline and diesel engines |
JP2015178777A (ja) * | 2014-03-18 | 2015-10-08 | トヨタ自動車株式会社 | 内燃機関 |
EP3841289B1 (fr) * | 2018-08-23 | 2024-05-01 | Volvo Truck Corporation | Procédé de fonctionnement d'un système de moteur à combustion interne |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE551376C (de) * | 1932-05-30 | Charles Devaud | Vorrichtung zur Vorbehandlung von Betriebsstoffen fuer Verbrennungskraftmaschinen | |
US1635938A (en) * | 1920-10-16 | 1927-07-12 | John W Hudson | Cooling mechanism for internal-combustion engines |
CH225106A (fr) * | 1941-03-24 | 1942-12-31 | W Blanc | Installation d'alimentation d'un moteur à combustion interne. |
DE2137694A1 (de) * | 1971-07-28 | 1973-02-08 | Bosch Gmbh Robert | Magnetventil zur abgasrueckfuehrung bei brennkraftmaschinen |
US3799133A (en) * | 1972-06-22 | 1974-03-26 | Gen Motors Corp | Solenoid valve control for exhaust gas recirculation |
DE2909465A1 (de) * | 1979-03-10 | 1980-09-18 | Bosch Gmbh Robert | Einrichtung zur steuerung von abgasrueckfuehrmengen bei selbstzuendenden brennkraftmaschinen |
JPS5791364A (en) * | 1980-11-28 | 1982-06-07 | Suzuki Motor Co Ltd | Intake pipe heating apparatus for internal combustion engine |
JPS57135225A (en) * | 1981-02-16 | 1982-08-20 | Fuji Heavy Ind Ltd | Intake and exhaust construction for internal combustion engine |
US4399798A (en) * | 1982-01-13 | 1983-08-23 | General Motors Corporation | Exhaust gas recirculation control |
-
1982
- 1982-09-24 DE DE19823235397 patent/DE3235397A1/de not_active Withdrawn
-
1983
- 1983-09-10 DE DE8383108949T patent/DE3366098D1/de not_active Expired
- 1983-09-10 EP EP83108949A patent/EP0104524B1/fr not_active Expired
- 1983-09-14 US US06/532,136 patent/US4467774A/en not_active Expired - Fee Related
- 1983-09-19 JP JP58171413A patent/JPS5979061A/ja active Pending
- 1983-09-23 AU AU19395/83A patent/AU558920B2/en not_active Ceased
Also Published As
Publication number | Publication date |
---|---|
DE3366098D1 (en) | 1986-10-16 |
US4467774A (en) | 1984-08-28 |
EP0104524A1 (fr) | 1984-04-04 |
JPS5979061A (ja) | 1984-05-08 |
DE3235397A1 (de) | 1984-05-10 |
AU1939583A (en) | 1984-03-29 |
AU558920B2 (en) | 1987-02-12 |
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