WO1996019657A1 - Dispositif de decontamination des gaz d'echappement de moteurs a combustion interne - Google Patents

Dispositif de decontamination des gaz d'echappement de moteurs a combustion interne Download PDF

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Publication number
WO1996019657A1
WO1996019657A1 PCT/EP1995/005011 EP9505011W WO9619657A1 WO 1996019657 A1 WO1996019657 A1 WO 1996019657A1 EP 9505011 W EP9505011 W EP 9505011W WO 9619657 A1 WO9619657 A1 WO 9619657A1
Authority
WO
WIPO (PCT)
Prior art keywords
exhaust gas
internal combustion
combustion engine
secondary air
exhaust
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
Application number
PCT/EP1995/005011
Other languages
German (de)
English (en)
Inventor
Geert-Ingolf RÖDER
Winfried Eifel
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.)
Audi AG
Original Assignee
Audi AG
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 Audi AG filed Critical Audi AG
Publication of WO1996019657A1 publication Critical patent/WO1996019657A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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
    • 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
    • F01N3/30—Arrangements for supply of additional air
    • F01N3/34—Arrangements for supply of additional air using air conduits or jet air pumps, e.g. near the engine exhaust port
    • 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
    • F01N3/18—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 methods of operation; Control
    • F01N3/22—Control of additional air supply only, e.g. using by-passes or variable air pump drives
    • 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
    • F02M26/12—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems characterised by means for attaching parts of an EGR system to each other or to engine parts
    • 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
    • F02M26/14—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories in relation to the exhaust system
    • F02M26/16—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories in relation to the exhaust system with EGR valves located at or near the connection to the exhaust system
    • 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
    • F02M26/36—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with means for adding fluids other than exhaust gas to the recirculation passage; with reformers
    • 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
    • F02M26/41—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories characterised by the arrangement of the recirculation passage in relation to the engine, e.g. to cylinder heads, liners, spark plugs or manifolds; characterised by the arrangement of the recirculation passage in relation to specially adapted combustion chambers
    • 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
    • F02M2026/001—Arrangements; Control features; Details
    • F02M2026/009—EGR combined with means to change air/fuel ratio, ignition timing, charge swirl in the cylinder
    • 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
    • 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
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

Definitions

  • the invention relates to a device for exhaust gas detoxification in an internal combustion engine with an exhaust gas recirculation system and with a secondary air supply according to the preamble of claim 1.
  • a line connected to the exhaust manifold of the internal combustion engine is provided, which feeds exhaust gas in defined quantities to the intake side of the internal combustion engine via an exhaust gas recirculation valve.
  • an exhaust gas recirculation valve In order to initiate afterburning in the exhaust system of the internal combustion engine during a cold start, it is also known to blow secondary air into the exhaust gas ducts near the combustion chambers of the internal combustion engine for a defined period of time. This afterburning can a. the light-off behavior of a downstream catalyst can be improved.
  • An internal combustion engine with such an exhaust gas recirculation system and a secondary air injection is shown, for example, by DE 26 26 773 AI.
  • the object of the invention is to propose a device for exhaust gas detoxification of the generic type, which has a reduced construction and assembly costs.
  • the common line section is to be arranged near the combustion chambers of the internal combustion engine in the exhaust gas channels, a longitudinal channel arranged in the cylinder head of the internal combustion engine or a hollow flange of the exhaust manifold forming a line guide being preferably proposed.
  • the longitudinal channel is relatively simple to manufacture and can cut the exhaust gas channels directly or correspond to them by means of short connecting channels.
  • the common line section can also be formed by the hollow flange or by lines laid separately in the exhaust manifold or outside the cylinder head. Furthermore, a lamellar flange can be used, as described for the secondary air supply via an exhaust manifold in the utility model DE-GM 89 14 153.
  • the exhaust gas recirculation valve and the valve for controlling the secondary air supply be assembled, if necessary, as a pre-assembly unit connected to the common line section or the longitudinal channel. This reduces both the effort for assembly and the laying of control lines.
  • FIG. 1 shows a plan view of an in-line reciprocating piston internal combustion engine with an intake manifold and an exhaust manifold and a device for exhaust gas detoxification with exhaust gas recirculation and secondary air supply;
  • FIG. 2 shows a view X of FIG. 1 on the end face of the cylinder head of the internal combustion engine with attached exhaust gas recirculation valve and secondary air valve;
  • FIG. 3 shows a longitudinal section through a partially shown hollow flange of an alternative exhaust manifold according to FIG. 1.
  • 1, 10 denotes a four-cylinder reciprocating internal combustion engine, to which an intake manifold 12 and an exhaust manifold 14 are flanged for the supply of combustion air.
  • intake and exhaust gas exchange valves 18, 20 are provided which control the gas exchange of the internal combustion engine via corresponding intake ports 22 and exhaust ports 24.
  • the fuel metering and the exhaust system with three-way catalytic converter connected to the exhaust manifold 14 are of conventional construction and are therefore not shown.
  • a longitudinal channel 26 is incorporated on the side of the exhaust ports 24, which on the one hand opens into the exhaust ports 24 via short connecting channels 28 and on the other hand ends at the end face 30 of the cylinder head 16.
  • a bracket 32 is screwed onto the end face 30 (see also FIG. 2), to which an exhaust gas recirculation valve 34 and a secondary air valve 36 are flanged. Bores 38, 40 are provided within the bracket 32, which the valves 34, 36 with the longitudinal connect channel 26.
  • the longitudinal duct 26 thus forms a common line section with the connecting ducts 28 both with the exhaust gas recirculation valve 34 and with the secondary air valve 36.
  • the two valves 34, 36 which can also be of conventional design, are connected to a control unit 42 via control lines.
  • the exhaust gas recirculation valve 34 is connected via a line 44 to the intake manifold 12 for returning exhaust gas
  • the secondary air valve 36 is connected via a hose line 46 to a secondary air pump 48, which flows from the clean air space of the air filter 50 of the internal combustion engine activated state draws air and supplies it to the secondary air valve 36 under pressure.
  • the exhaust gas recirculation is deactivated or the exhaust gas recirculation valve 34 is closed via the control unit 42, but the secondary air supply is activated. Accordingly, air is drawn in via the air pump 48 and blown into the exhaust gas ducts 24 under pressure via the opened secondary air valve 36 and via the common line section 26, 28 or the longitudinal duct 26 and the connecting ducts 28 near the combustion chambers of the internal combustion engine. In connection with the hot exhaust gases emerging from the combustion chambers of the internal combustion engine, an after-reaction occurs with the known effects.
  • the secondary air supply is deactivated and the control of the exhaust gas recirculation is activated.
  • the exhaust gas recirculation is now controlled in a known manner as a function of certain operating states of the internal combustion engine, such as speed n, load ⁇ and temperature T of the internal combustion engine, the exhaust gas now being removed again via the common line section 26, 28 and via the exhaust gas recirculation valve 34 and the Lei ⁇ device 44 is supplied to the intake manifold 12.
  • the quantity of the recirculated exhaust gas is controlled in a defined manner via the control unit 42.
  • the two valves 34, 36 can be screwed as a pre-assembly unit with the bracket 32 to the cylinder head of the internal combustion engine and then connected.
  • a combined exhaust gas recirculation secondary air valve could also be used.
  • the control (control unit 42) of the two valves 34, 36 must ensure that one or the other system operates alternately and not simultaneously.
  • the flange of the exhaust gas manifold 14 which adjoins the cylinder head 16 in a gas-tight manner can be designed as a hollow flange 52 (see FIG. 3), which is essentially composed of two sheet-metal boards 54/56 soldered to one another in a gas-tight manner form a cavity 58 between them as a common line section.
  • the individual exhaust pipes 60, 62 of the exhaust manifold 14 as well as support pipes 64 provided in the area of the fastening screws are also soldered to the sheet metal boards 54, 56.
  • connection pieces 66, 68 are provided on the sheet metal circuit board 54 for connecting a line 72 leading to a separate exhaust gas recirculation valve 70 and a line 76 leading to a secondary air valve 74.
  • the sheet metal plate 56 of the hollow flange 52 and possibly a seal, not shown, are provided with bores 78 which communicate with channels 80 incorporated from the connecting flange side, the channels 80 in the vicinity of the combustion chambers of the internal combustion engine (similar to the connecting channels 28) in open the exhaust ducts 24.
  • valves 70, 74 are connected to the control unit 42 and are controlled as described above.
  • the secondary air or the recirculated exhaust gas flow accordingly According to the arrows drawn through the cavity 58 and the channels 80 as a common line section.
  • the alternating exhaust gas recirculation or secondary air supply can also take place via a so-called lamella flange of an exhaust manifold, as described in detail in the utility model DE-89 14 153, which also goes back to the applicant.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Exhaust Gas After Treatment (AREA)

Abstract

Afin de simplifier la structure, le montage et la commande d'un dispositif de décontamination des gaz d'échappement d'un moteur à combustion interne équipé d'un système de remise en circulation des gaz d'échappement et d'un système secondaire d'amenée d'air, les deux systèmes sont raccordés à une section commune d'un conduit qui débouche du côté des gaz d'échappement et sont mis en marche alternativement.
PCT/EP1995/005011 1994-12-20 1995-12-18 Dispositif de decontamination des gaz d'echappement de moteurs a combustion interne Ceased WO1996019657A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEP4445490.2 1994-12-20
DE4445490A DE4445490A1 (de) 1994-12-20 1994-12-20 Vorrichtung zur Abgasentgiftung an einer Brennkraftmaschine

Publications (1)

Publication Number Publication Date
WO1996019657A1 true WO1996019657A1 (fr) 1996-06-27

Family

ID=6536403

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1995/005011 Ceased WO1996019657A1 (fr) 1994-12-20 1995-12-18 Dispositif de decontamination des gaz d'echappement de moteurs a combustion interne

Country Status (2)

Country Link
DE (1) DE4445490A1 (fr)
WO (1) WO1996019657A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2173400C2 (ru) * 1999-08-30 2001-09-10 Открытое акционерное общество "АВТОВАЗ" Двигатель внутреннего сгорания
DE10118490C2 (de) * 2000-04-17 2003-03-27 Mitsubishi Motors Corp Anordnung des Ansaugsystems für eine Brennkraftmaschine mit EGR-Einrichtung

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19757931A1 (de) * 1997-12-24 1999-07-01 Mannesmann Vdo Ag Vorrichtung zum Rückführen von Abgas und zum Vorheizen eines Abgasreinigers
DE19809861A1 (de) * 1998-03-07 1999-09-09 Mann & Hummel Filter Vorrichtung zur Rückführung von Abgasen bei einem Verbrennungsmotor
DE19836015C2 (de) 1998-08-10 2002-06-13 Behr Gmbh & Co Verfahren zum Aufweiten von Rohrenden von Rohren eines Wärmetauschers
GB9927087D0 (en) * 1999-11-17 2000-01-12 Rover Group Cylinder head for a multi-cylinder in-line combustion engine having secodary air supply system
DE19959138B4 (de) * 1999-12-08 2014-04-03 Volkswagen Ag Vorrichtung zur Abgasrückführung an einer Brennkraftmaschine
DE10232516A1 (de) * 2002-07-18 2004-01-29 Daimlerchrysler Ag Vorrichtung zur Verbesserung der Abgasemission
US7152393B2 (en) 2002-07-18 2006-12-26 Daimlerchrysler Ag. Arrangement for utilizing the throttle energy of an internal combustion engine
DE102009043087B4 (de) * 2009-09-25 2023-08-03 Volkswagen Ag Brennkraftmaschine mit Sekundärluftzuführung sowie ein Verfahren zum Betreiben dieser

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2655382A1 (fr) * 1989-12-04 1991-06-07 Peugeot Dispositif d'introduction de gaz additionnel, tel que de l'air, dans un moteur a combustion interne et moteur equipe d'un tel dispositif.
EP0565410A1 (fr) * 1992-04-09 1993-10-13 Automobiles Peugeot Dispositif à rampe intégrée pour le recyclage des gaz d'échappement d'un moteur à combustion interne
EP0574181A1 (fr) * 1992-06-12 1993-12-15 Ford Motor Company Limited Moteur à combustion interne avec circuit d'air secondaire et circuit de recirculation de gaz d'échappement
FR2696787A1 (fr) * 1992-10-09 1994-04-15 Renault Dispositif d'introduction de gaz additionnels pour moteur à combustion interne.

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5234142A (en) * 1975-09-11 1977-03-15 Nissan Motor Co Ltd Exhaust gas conscious torch ignition engine
DE3900559A1 (de) * 1989-01-11 1990-07-12 Pierburg Gmbh Verfahren zur abgasentgiftung bei gemischverdichtenden mehrzylinder-brennkraftmaschinen

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2655382A1 (fr) * 1989-12-04 1991-06-07 Peugeot Dispositif d'introduction de gaz additionnel, tel que de l'air, dans un moteur a combustion interne et moteur equipe d'un tel dispositif.
EP0565410A1 (fr) * 1992-04-09 1993-10-13 Automobiles Peugeot Dispositif à rampe intégrée pour le recyclage des gaz d'échappement d'un moteur à combustion interne
EP0574181A1 (fr) * 1992-06-12 1993-12-15 Ford Motor Company Limited Moteur à combustion interne avec circuit d'air secondaire et circuit de recirculation de gaz d'échappement
FR2696787A1 (fr) * 1992-10-09 1994-04-15 Renault Dispositif d'introduction de gaz additionnels pour moteur à combustion interne.

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2173400C2 (ru) * 1999-08-30 2001-09-10 Открытое акционерное общество "АВТОВАЗ" Двигатель внутреннего сгорания
DE10118490C2 (de) * 2000-04-17 2003-03-27 Mitsubishi Motors Corp Anordnung des Ansaugsystems für eine Brennkraftmaschine mit EGR-Einrichtung

Also Published As

Publication number Publication date
DE4445490A1 (de) 1996-06-27

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