EP0104524A1 - 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 PDF

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Publication number
EP0104524A1
EP0104524A1 EP83108949A EP83108949A EP0104524A1 EP 0104524 A1 EP0104524 A1 EP 0104524A1 EP 83108949 A EP83108949 A EP 83108949A EP 83108949 A EP83108949 A EP 83108949A EP 0104524 A1 EP0104524 A1 EP 0104524A1
Authority
EP
European Patent Office
Prior art keywords
line
exhaust gas
exhaust
combustion engine
internal combustion
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.)
Granted
Application number
EP83108949A
Other languages
German (de)
English (en)
Other versions
EP0104524B1 (fr
Inventor
Wolfram Becker
Hermann Dr. Klein
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP0104524A1 publication Critical patent/EP0104524A1/fr
Application granted granted Critical
Publication of EP0104524B1 publication Critical patent/EP0104524B1/fr
Expired legal-status Critical Current

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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 generally quite short for structural reasons alone. However, in the case of engines with a crossflow cylinder head, this type is one relatively long piping from the exhaust side to the intake side required. 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 with the available means in that the return line is connected to the connection of the front and rear silencers, a point which has a lower pressure than the exhaust side of the internal combustion engine.
  • the flushing 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 a line. This initially consists of a first line 18 which is connected directly 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.
  • 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 pipe 16 there is a pressure relative to the pressure at the point where the first line 18 opens into the exhaust manifold 14 lower pressure.
  • 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 pipe 16 can be provided with a venturi pipe 23 in a further embodiment of the invention, so that the vacuum required in the pipe 16 for the purge 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)
EP83108949A 1982-09-24 1983-09-10 Dispositif de recyclage des gaz d'échappement dans un moteur à combustion interne Expired EP0104524B1 (fr)

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 true EP0104524A1 (fr) 1984-04-04
EP0104524B1 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)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015141756A1 (fr) * 2014-03-18 2015-09-24 Toyota Jidosha Kabushiki Kaisha Moteur à combustion interne

Families Citing this family (11)

* Cited by examiner, † Cited by third party
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
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
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
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
WO2020038576A1 (fr) * 2018-08-23 2020-02-27 Volvo Truck Corporation Procédé de fonctionnement d'un système de moteur à combustion interne

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE551376C (de) * 1932-05-30 Charles Devaud Vorrichtung zur Vorbehandlung von Betriebsstoffen fuer Verbrennungskraftmaschinen
CH225106A (fr) * 1941-03-24 1942-12-31 W Blanc Installation d'alimentation d'un moteur à combustion interne.
GB2043778A (en) * 1979-03-10 1980-10-08 Bosch Gmbh Robert Regulating of exhaust gas recirculation in internal combustion engines

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1635938A (en) * 1920-10-16 1927-07-12 John W Hudson Cooling mechanism for internal-combustion engines
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
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

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE551376C (de) * 1932-05-30 Charles Devaud Vorrichtung zur Vorbehandlung von Betriebsstoffen fuer Verbrennungskraftmaschinen
CH225106A (fr) * 1941-03-24 1942-12-31 W Blanc Installation d'alimentation d'un moteur à combustion interne.
GB2043778A (en) * 1979-03-10 1980-10-08 Bosch Gmbh Robert Regulating of exhaust gas recirculation in internal combustion engines

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015141756A1 (fr) * 2014-03-18 2015-09-24 Toyota Jidosha Kabushiki Kaisha Moteur à combustion interne

Also Published As

Publication number Publication date
AU1939583A (en) 1984-03-29
JPS5979061A (ja) 1984-05-08
DE3366098D1 (en) 1986-10-16
EP0104524B1 (fr) 1986-09-10
AU558920B2 (en) 1987-02-12
US4467774A (en) 1984-08-28
DE3235397A1 (de) 1984-05-10

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