EP1926906A1 - Dispositif de commande d'un flux de gaz d'echappement - Google Patents

Dispositif de commande d'un flux de gaz d'echappement

Info

Publication number
EP1926906A1
EP1926906A1 EP06776518A EP06776518A EP1926906A1 EP 1926906 A1 EP1926906 A1 EP 1926906A1 EP 06776518 A EP06776518 A EP 06776518A EP 06776518 A EP06776518 A EP 06776518A EP 1926906 A1 EP1926906 A1 EP 1926906A1
Authority
EP
European Patent Office
Prior art keywords
housing
exhaust gas
exhaust
actuator
exhaust passage
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.)
Withdrawn
Application number
EP06776518A
Other languages
German (de)
English (en)
Inventor
Claus Beck
Karsten Emrich
Michael Halblaub
Dieter Werner
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.)
Mahle Behr GmbH and Co KG
Original Assignee
Behr GmbH and Co KG
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 Behr GmbH and Co KG filed Critical Behr GmbH and Co KG
Publication of EP1926906A1 publication Critical patent/EP1926906A1/fr
Withdrawn legal-status Critical Current

Links

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
    • F02M26/52—Systems for actuating EGR valves
    • F02M26/55—Systems for actuating EGR valves using vacuum actuators
    • F02M26/56—Systems for actuating EGR valves using vacuum actuators having pressure modulation valves
    • F02M26/57—Systems for actuating EGR valves using vacuum actuators having pressure modulation valves using electronic means, e.g. electromagnetic valves
    • 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
    • F02M26/25—Layout, e.g. schematics with coolers having bypasses
    • 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
    • F02M26/25—Layout, e.g. schematics with coolers having bypasses
    • F02M26/26—Layout, e.g. schematics with coolers having bypasses characterised by details of the bypass valve
    • 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
    • F02M26/51—EGR valves combined with other devices, e.g. with intake valves or compressors

Definitions

  • the present invention relates to a device for controlling an exhaust gas flow according to the preamble of claim 1.
  • exhaust gas recirculation systems are increasingly used to reduce pollutants.
  • These and other systems require devices for regulating and controlling exhaust gas flows which, owing to the special requirements such as installation space (in particular in the case of passenger cars), temperature, cost and reliability, require independent developments.
  • DE 102 03 003 A1 describes an exhaust gas heat exchanger with a housing which is rectangular in cross-section and which comprises a heat exchanger flow area and a bypass flow area.
  • a control flap which can be driven mechanically via a rotary shaft is provided on the heat exchanger, by means of which an inflowing exhaust gas flow can be conducted to either the heat exchanger area or the bypass area.
  • Schematically also a downstream of the heat exchanger and structurally separate control valve is described, by means of which the total amount of an exhaust gas flow recirculated to the engine is adjustable.
  • the first of the exhaust ducts is connected to an exhaust gas cooler and the second of the exhaust ducts with a bypass line for bypassing the exhaust gas cooler.
  • the bypass line is arranged in a common housing with the exhaust gas cooler.
  • the adjusting element can be driven via a rotatable shaft supported on the housing. Further preferably, the rotatable shaft is driven via an actuator supported on the housing, so that the drive unit or the actuator of the first control element forms a structural unit with the device according to the invention.
  • a valve seat of the second actuating element is provided on the housing.
  • the second control element particularly preferably has a valve disk which corresponds to the valve seat and which is connected to an actuator via a slide rod.
  • a comprehensive the slide rod and the valve seat assembly of the second actuating element releasably connected to the housing.
  • the cross section may also have a different shape.
  • exhaust gas cooler with integrated bypass channel for example, by the aforementioned DE 102 03 003 A1, which are connectable in the region of the first and the second exhaust passage to the housing.
  • Such a connection is made regularly by permanent welding, but can also be a detachable connection, optionally with the addition of a sealant and the manner of a screw-flange.
  • Such a detachable connection would in particular make the first actuating element accessible to maintenance in a simple manner.
  • a third exhaust passage is provided on the housing, which forms a supply or discharge of the entire exhaust gas flow of the first and second exhaust passage.
  • a device according to the invention can be used so that the adjusting elements are arranged downstream of a third exhaust duct or upstream.
  • the third exhaust gas duct preferably has a substantially circular cross section.
  • Nal in a connection region of the housing on a different direction than the first and second exhaust passage in particular, the directions of the first and second exhaust passage are the same and the direction of the third exhaust passage for this purpose is angled approximately 90 °.
  • the second actuating element subsequently the first actuating element and then the first and the second exhaust gas channel, is initially arranged in the housing starting from the third exhaust gas duct.
  • an actuator of the first control element and / or an actuator of the second control element is designed as a pressure cell.
  • a drive of a respective actuating element can be provided in a cost-effective manner.
  • an actuator of the first control element and / or an actuator of the second control element is designed as an electromechanical component.
  • an actuator of the first control element and / or an actuator of the second control element is designed as an electromechanical component.
  • Fig. 1 shows a perspective view of a total of the invention
  • Fig. 2 shows the device of Fig. 1 from a different perspective.
  • FIG. 3 shows a further spatial view of the device from FIG. 1, wherein an assembly with parts of a second control element is shown separated.
  • FIG. 4 is a plan view from the side of the device of FIG. 3.
  • the central element of the device according to the invention is a relatively complicated housing 1, which in the present case is produced as a one-piece component in a casting process.
  • the housing may also be composed of several individual parts, in particular by means of welding or by means of detachable connections.
  • the housing 1 has an opening 2 of substantially rectangular cross-section, which is aligned according to FIG. 1 obliquely left from the plane of the drawing.
  • This opening 2 forms the end of a first exhaust gas duct 3 and the end of a second exhaust gas duct 4.
  • the two exhaust gas ducts 3, 4 are separated from one another by a first adjusting element 5 designed as a flap.
  • An end baffle 5a of the control element 5 terminates in the region of the opening 2 and defines there the separation of the two exhaust channels 3, 4.
  • the movable flap 5 is fixed on a rotatable shaft 6, which passes through an outer wall of the housing 1 and in the region of this passage against the housing 1 is supported rotatably supported.
  • the movable flap 5 is located in end positions of their adjustment at each seat edge 5b. In each of these end positions, one of the exhaust ducts 3, 4 is completely closed and the other is completely open.
  • the rotary shaft 6 is provided with a return spring 7, wherein an eccentric pin 8 of the rotary shaft 6 is connected via a push rod 9 with an actuator 10 of the first adjusting element 5.
  • the actuator 10 is connected via a retaining plate 11 fixed to the housing 1.
  • the actuator 10 is designed as a vacuum box with a vacuum connection 10 a.
  • a rotation of the rotatable shaft 6 driven by the actuator 10 can cause such an adjustment of the control flap 5 that either the first exhaust duct 3 or the second exhaust duct 4 are completely or almost completely closed. But it is also the setting of an intermediate position possible, in which the Distribution of a total exhaust gas flow to the two exhaust channels 3, 4 takes place in a dependent on the position of the butterfly valve ratio.
  • An unillustrated exhaust gas cooler with a bypass line integrated therein has a substantially rectangular cross-section and is adapted to be connected to the rectangular opening 2 of the housing 1. In the present case, this connection is permanent and takes place by welding or brazing. This type of connection contributes to the generally high temperatures in the opening 2 account.
  • an exhaust gas cooler with integrated bypass line reference is made in particular to the already mentioned at the beginning of DE 102 03 003 A1.
  • a third exhaust passage 12 of the housing 1 terminates in an opening 12a of circular cross-section.
  • the housing 1 is connected via pipes, not shown, with a central exhaust pipe of an internal combustion engine of a car, wherein the connection is generally at a fixed branch.
  • the third exhaust duct After the circular connection opening 12a, the third exhaust duct has a curvature of 90 ° (see in particular Fig. 2) and then enters an expanded, substantially cylindrical portion 13 of the housing 1 a.
  • a valve seat 14 of a second actuating element 15 is provided on the housing 1.
  • it is a post-processed area, which is formed of the same material as the rest of the housing 1. However, it can also be a pressed-in valve seat made of a different material.
  • the cylindrical portion 13 has in its wall an opening 16, which is followed by the further Genzouseausformung, wherein behind the opening 16 is an expansion of the cross section of the third exhaust passage.
  • the adjustable division of the exhaust gas flow of the third exhaust gas passage to the first exhaust passage 3 and the second exhaust passage takes place by means of the adjusting flap. 5
  • a flange 17 is provided, with which an assembly of the second actuating element 15 is sealingly screwed.
  • This assembly of the second control element 15 includes a second actuator 18 and a standing with the actuator 18, translationally movable slide rod 19 with an end of the slide rod 19 fixed valve disc 20 and a mating flange 21.
  • the actuator 18 is also a vacuum box with a Pressure port 18 a designed.
  • An electrical connection 18b is used for the controlled control of the actuator 18, wherein in the actuator 18, a control valve, not shown, is provided for the negative pressure.
  • the slide rod 19 projects with the valve disk into the cylindrical portion 13 of the housing 1.
  • the slide rod 19 when fully extended from the actuator 18, the valve plate 20 sealingly press into the valve seat 14, so that no exhaust gas, the cylindrical portion 13 and the opening 16 can happen more.
  • a defined and metered release of an opening is possible, so that a total exhaust gas flow of the device according to the invention by the second actuator 15 is adjustable.
  • the valve 14, 19, 20 is pressurized in the presently preferred arrangement on a motor vehicle in the opening direction through the exhaust gas flow. But it can also be pressurized in the closing direction.
  • the opening 12a of the third exhaust duct 12 is oriented in a direction substantially perpendicular to the direction of the parallel exhaust ducts 3, 4.
  • a specific specification of a space in a car engine compartment is taken into account.
  • another specification of a construction space can be taken into account.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Exhaust Silencers (AREA)

Abstract

Dispositif de commande d'un flux de gaz d'échappement, en particulier d'un moteur à combustion interne de véhicule, qui comporte un carter (1) pouvant être traversé par les gaz d'échappement, et un premier élément de réglage (5) mobile reposant sur le carter (1). Le flux de gaz d'échappement peut être guidé sélectivement dans un premier conduit (3) pour gaz d'échappement et / ou dans un second conduit (4) pour gaz d'échappement par un déplacement du premier élément de réglage (5), un second élément de réglage (15) étant destiné à réguler une grandeur du flux de gaz d'échappement dans le carter (1).
EP06776518A 2005-09-08 2006-07-31 Dispositif de commande d'un flux de gaz d'echappement Withdrawn EP1926906A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005044088A DE102005044088A1 (de) 2005-09-08 2005-09-08 Vorrichtung zur Steuerung eines Abgasstroms
PCT/EP2006/007554 WO2007028464A1 (fr) 2005-09-08 2006-07-31 Dispositif de commande d'un flux de gaz d'echappement

Publications (1)

Publication Number Publication Date
EP1926906A1 true EP1926906A1 (fr) 2008-06-04

Family

ID=36954896

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06776518A Withdrawn EP1926906A1 (fr) 2005-09-08 2006-07-31 Dispositif de commande d'un flux de gaz d'echappement

Country Status (4)

Country Link
US (1) US20080216469A1 (fr)
EP (1) EP1926906A1 (fr)
DE (1) DE102005044088A1 (fr)
WO (1) WO2007028464A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100955213B1 (ko) 2009-08-25 2010-04-29 주식회사 유니크 이지알 밸브 일체형 바이패스 밸브
KR101016190B1 (ko) 2010-04-12 2011-02-24 주식회사 유니크 차량용 바이패스 밸브
DE102013112018B4 (de) * 2013-10-31 2018-12-20 Pierburg Gmbh Ventilsystem für Verbrennungskraftmaschinen

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0018406D0 (en) * 2000-07-28 2000-09-13 Serck Heat Transfer Limited EGR bypass tube cooler
WO2003060314A1 (fr) * 2002-01-16 2003-07-24 Mitsubishi Denki Kabushiki Kaisha Dispositif de recirculation des gaz d'echappement
DE10203003B4 (de) * 2002-01-26 2007-03-15 Behr Gmbh & Co. Kg Abgaswärmeübertrager
DE102004010117A1 (de) * 2003-02-27 2004-11-18 Denso Corp., Kariya Abgasrückführvorrichtung
US6971377B2 (en) * 2003-04-15 2005-12-06 Honeywell International, Inc. Exhaust gas recirculation cooler with bypass flow
DE10346250B4 (de) * 2003-10-06 2018-01-04 Bayerische Motoren Werke Aktiengesellschaft Abgaskühler mit einem Bypass
DE102004019554C5 (de) * 2004-04-22 2014-03-27 Pierburg Gmbh Abgasrückführsystem für eine Verbrennungskraftmaschine

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2007028464A1 *

Also Published As

Publication number Publication date
DE102005044088A1 (de) 2007-03-15
US20080216469A1 (en) 2008-09-11
WO2007028464A1 (fr) 2007-03-15

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