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WO2006099965A1 - Dispositif d'aspiration d'air pour un moteur a combustion interne comprenant un dispositif a clapet de derivation - Google Patents

Dispositif d'aspiration d'air pour un moteur a combustion interne comprenant un dispositif a clapet de derivation Download PDF

Info

Publication number
WO2006099965A1
WO2006099965A1 PCT/EP2006/002304 EP2006002304W WO2006099965A1 WO 2006099965 A1 WO2006099965 A1 WO 2006099965A1 EP 2006002304 W EP2006002304 W EP 2006002304W WO 2006099965 A1 WO2006099965 A1 WO 2006099965A1
Authority
WO
WIPO (PCT)
Prior art keywords
exhaust gas
channel
bypass
cooling
gas recirculation
Prior art date
Application number
PCT/EP2006/002304
Other languages
German (de)
English (en)
Inventor
Gerhard Gruber
Stephan Läpple
Original Assignee
Daimlerchrysler 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 Daimlerchrysler Ag filed Critical Daimlerchrysler Ag
Publication of WO2006099965A1 publication Critical patent/WO2006099965A1/fr

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
    • F02M26/65—Constructional details of EGR valves
    • F02M26/72—Housings
    • F02M26/73—Housings with means for heating or cooling the EGR 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
    • F02M26/13—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
    • F02M26/65—Constructional details of EGR valves
    • F02M26/71—Multi-way valves

Definitions

  • Air intake device for an internal combustion engine with deployable bypass valve device is
  • the invention relates to an air intake device for an internal combustion engine comprising an exhaust gas recirculation channel with a through hole, in which a bypass valve device can be used which comprises at least one bypass flap rotatably mounted on a shaft driven by an actuator and a mounting flange cantilevered over the shaft, the bypass flap between a first position, in which an upstream part of the exhaust gas recirculation passage with a to a
  • Such an air intake device is known from DE 103 41 393 B3, in which the bypass flap is fixed like a flag on the shaft and the shaft is arranged directly on a partition wall between the cooling channel and the bypass channel, wherein the bypass flap both in the first position and in the second position, the exhaust gas flow under deflection in the cooling channel or in the bypass channel passes.
  • the deflection of the exhaust gas flow causes undesirable flow losses in the exhaust gas flow.
  • the invention is the object of an air intake device of the type mentioned in such a way that the above-mentioned disadvantages are avoided.
  • bypass flap in the first or in the second position assumes a position in which it directs the exhaust gas flow from the upstream part of the exhaust gas recirculation channel without directional deflection in the cooling channel or in the bypass channel, flow losses due to a deflection of the flow direction can be avoided. As a result, there is a higher exhaust pressure in the exhaust gas recirculation channel, which has a positive effect on the pollutant emissions.
  • the bypass valve takes in the first position, a position a in which it directs the exhaust gas flow ⁇ without Ümre ⁇ kuncf irr the "Kühlkanar.
  • This carries the bypass valve in an advantageous manner not to increase due to the presence of the exhaust gas cooling device in the cooling channel anyway greater resistance to flow, so that the pressure of the recirculated exhaust gas through the cooling channel is greater, which ultimately results in a reduction of the exhaust gas pollution.
  • the said measure also contributes to the fact that the pressure losses in the cooling channel and those in the bypass channel are approximately the same size, which means that the exhaust gas recirculation rates are approximately the same in cooling mode and in bypass mode.
  • the deflection-free position of the bypass flap can for example be realized in that the bypass flap is flat and symmetrical to the shaft and that a central axis of the shaft is in a wall of the upstream part of the exhaust gas recirculation channel and a wall of the cooling channel containing surface and the central axes and the cross sections the upstream part of the exhaust gas recirculation passage and the cooling passage are aligned with each other.
  • bypass damper Since the bypass damper is symmetrical with respect to the shaft, it is torque-free when it flows, resulting in low actuating forces.
  • the end edges of the preferably rectangular bypass flap may be formed as sealing surfaces. Such a simple contour can be manufactured with high accuracy at relatively low cost as a common part for different types.
  • the bypass channel opens substantially transversely into a branch of the exhaust gas recirculation channel.
  • This part-circular surfaces form wall surfaces of a cylinder from whose central axis is collinear with the central axis of the shaft and with the through hole to which the bypass valve unit at the exhaust gas recirculation passage. is included.
  • the bypass passage is arranged substantially coplanar with the exhaust gas recirculation passage and the cooling passage.
  • the bypass channel can be arranged at least in the region of the branch transverse to a plane containing the exhaust gas recirculation channel and the cooling channel.
  • bypass flap unit For cooling the bypass flap unit, particularly preferably walls of the exhaust gas recirculation channel and / or the coolant channel and / or the bypass channel at least in the region of the junction on cooling chambers, which are flowed through by coolant. Then, the entire bypass valve unit can be changed without the coolant circuit would have to be opened.
  • FIG. 1 is a cross-sectional view of a bypass flap device held in an exhaust gas recirculation passage according to a first embodiment of the invention
  • Fig. 2 is a cross-sectional view taken along the line II- " TI " of Fig. 1 " ;
  • FIG. 3 shows a cross-sectional view of a bypass flap device held in an exhaust gas recirculation channel according to a further embodiment of the invention
  • FIG. 4 shows a cross-sectional view along the line IV-IV of Fig.l. Identical and same-acting components and assemblies of different embodiments are denoted below by the same reference numerals.
  • the air intake device for an internal combustion engine includes an exhaust gas recirculation passage 2 with a through-bore 4 into which a bypass flap device 6 is inserted. It comprises a bypass flap 10 which is rotatably mounted on a shaft 8 which can not be shown for reasons of scale, and a mounting flange 12 which cantiles the shaft 8. More specifically, the shaft 8 projects through a central through-bore 14 of the flange 12 and is there by axial and radial bearings stored.
  • the through hole 4 radially superior mounting flange 12 is detachably connected to a wall 16 of the exhaust gas recirculation passage 2, for example by screwing.
  • the bypass flap device 6 can be pulled out of the through-hole 4 as a whole or inserted into it.
  • the shaft 8 can be driven by the adjusting device, such as a vacuum box.
  • the bypass flap 10 is arranged symmetrically with respect to the shaft 8 and formed flat in a rectangular shape. Furthermore, all four edges 20a, 20b, 20c, 20d of the bypass flap 10 are designed as sealing surfaces with respect to the exhaust gas recirculation channel 2.
  • the through hole 4 for the bypass valve device 6 is arranged at a branch 22 of the exhaust gas recirculation channel 2, at which it is in a cooling channel 24 and branches a bypass channel 26.
  • the cooling channel 24 includes a per se known, not shown cooling device for cooling the exhaust gas flowing through it, the bypass channel 26 serves to guide exhaust around the cooling device around.
  • the branch 22 has wall sections 28 with a part-circular cross section, which form radial, preferably prominent or protruding sealing surfaces 30a, 30b relative to the shaft 8 relative to the associated sealing surfaces 20a, 20b of the bypass flap.
  • These surfaces 30a, 30b form wall surfaces of a cylinder whose central axis is collinear with the central axis of the shaft 8 and also the through-bore 4, on which the bypass flap device 6 is received on the exhaust gas recirculation channel 2.
  • upper and lower sealing surfaces 30c, 30d are also provided in planes perpendicular to the shaft 8 on the inner surfaces of the exhaust gas recirculation channel 2 in the region of the branch 22, which cooperate with the corresponding sealing surfaces 20c, 20d of the bypass flap 10.
  • the sealing surface 30c is formed on the mounting flange 12.
  • all the intermediate position of the bypass valve 10 are possible, ie that the exhaust gas guided in the exhaust gas recirculation channel 2 is partially conducted into the cooling channel 24 and into the bypass channel 26.
  • the bypass flap 10 in the first position 31, the bypass flap 10 assumes a position in which it directs the exhaust gas flow without deflection into the cooling channel 24.
  • the deflection-free position of the bypass flap 10 can be realized, for example, in that a central axis of the shaft 8 is in a wall 34 of the upstream part 32 of the exhaust gas recirculation passage 2 and a wall 36 of the cooling channel 24 containing surface and the center axes and the cross sections of the upstream part 32nd the exhaust gas recirculation channel 2 and the cooling channel 24 are aligned with each other and run steadily.
  • the exhaust gas recirculation passage 2 the bypass passage 26 and the cooling passage 24 are arranged substantially coplanar.
  • bypass channel can be arranged at least in the region of the branch 22 transversely to a plane which contains the exhaust gas recirculation channel 2 and the cooling channel 24.
  • This embodiment is shown in Fig.3 and Fig.4. In both cases, the execution of the bypass valve device 6 is identical.
  • a direct cooling of the bypass valve device 6 may be provided.
  • the bypass flap 10 is pivoted into the first position 31, when the exhaust gas in the exhaust gas recirculation passage 2 is to be passed into the cooling channel 24 and cooled there, for example, in already warm-running internal combustion engine.
  • the bypass channel 26 with exhaust gas supplying position 33 the bypass valve 10 is however brought when no cooling of the exhaust gas should take place, which is the case, for example, shortly after a cold start of the internal combustion engine.
  • the bypass door 10 may take any position to partially guide exhaust gas into the bypass passage 26 as well as into the cooling passage 24.

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)

Abstract

L'invention concerne un dispositif d'aspiration d'air (1) pour un moteur à combustion interne contenant un canal de recyclage des gaz d'échappement (2) comprenant un orifice de passage (4), dans lequel un dispositif (6) à clapet de dérivation peut être inséré, ce dernier comprenant au moins un clapet de dérivation (10) fixé, de manière rotative, à un arbre (8) pouvant être entraîné par un dispositif de régulation ainsi qu'une collerette (12) de fixation supportant l'arbre de façon mobile, le clapet de dérivation (10) pouvant passer d'une première position (31), dans laquelle une partie (32) en amont de l'écoulement du canal (2) de recyclage de gaz d'échappement est reliée à un canal de refroidissement (24) conduisant à un dispositif de refroidissement des gaz d'échappement, et une seconde position (33), dans laquelle la partie (32) en amont de l'écoulement du canal (2) de recyclage des gaz d'échappement est reliée à un canal de dérivation (26) entourant ledit dispositif de refroidissement des gaz d'échappement. L'invention est caractérisée en ce que le clapet (10) prenne la première position (31) ou la seconde position (33), dans laquelle l'écoulement des gaz d'échappement de la partie (32) en amont de l'écoulement du canal (2) de recyclage de gaz d'échappement est dirigé, sans changement de direction, dans le canal de refroidissement (24) ou dans le canal de dérivation (26).
PCT/EP2006/002304 2005-03-19 2006-03-14 Dispositif d'aspiration d'air pour un moteur a combustion interne comprenant un dispositif a clapet de derivation WO2006099965A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005012842A DE102005012842A1 (de) 2005-03-19 2005-03-19 Luftansaugvorrichtung für eine Brennkraftmaschine mit einsetzbarer Bypassklappeneinrichtung
DE102005012842.4 2005-03-19

Publications (1)

Publication Number Publication Date
WO2006099965A1 true WO2006099965A1 (fr) 2006-09-28

Family

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Family Applications (1)

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PCT/EP2006/002304 WO2006099965A1 (fr) 2005-03-19 2006-03-14 Dispositif d'aspiration d'air pour un moteur a combustion interne comprenant un dispositif a clapet de derivation

Country Status (2)

Country Link
DE (1) DE102005012842A1 (fr)
WO (1) WO2006099965A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2071171A1 (fr) * 2007-12-10 2009-06-17 smk systeme metall kunststoff gmbh & co. Dispositif à clapets pour un système de recirculation des gaz d'échappement

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008006049A1 (de) 2008-01-25 2009-07-30 Audi Ag Volumenstromsteller für ein Medium
DE102008048912B4 (de) 2008-09-26 2021-11-04 Faurecia Emissions Control Technologies, Germany Gmbh Abgasanlage und Abgasventil zur Steuerung eines Volumenstroms von Abgas sowie ein Verfahren zur Steuerung eines Volumenstroms
US7581533B1 (en) * 2008-10-09 2009-09-01 Gm Global Technology Operations, Inc. Three mode cooler for exhaust gas recirculation
DE102011117362A1 (de) 2011-10-29 2013-05-02 Volkswagen Ag Wärmetauscher
CN104675579A (zh) * 2013-12-03 2015-06-03 汪文辉 由排气控制的阀门自旋转系统
GB2549121B (en) * 2016-04-06 2019-06-12 Jaguar Land Rover Ltd Valve arrangement for an energy recovery unit
DE102019105932A1 (de) * 2019-03-08 2020-09-10 Pierburg Gmbh Klappenvorrichtung für eine Verbrennungskraftmaschine

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4147141A (en) * 1977-07-22 1979-04-03 Toyota Jidosha Kogyo Kabushiki Kaisha Exhaust gas recirculation system in an internal combustion engine
US20050039729A1 (en) * 2002-01-26 2005-02-24 Behr Gmbh & Co Kg Exhaust gas heat exchanger
EP1510739A1 (fr) * 2003-08-28 2005-03-02 Gustav Wahler GmbH u. Co.KG Soupape d'échappement
EP1555421A2 (fr) * 2004-01-19 2005-07-20 Mahle Tennex Corporation Dispositif de recirculation de gaz d'échappement d'un moteur à combustion interne

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2776015B1 (fr) * 1998-03-11 2000-08-11 Ecia Equip Composants Ind Auto Organe d'echappement a echangeur de chaleur
DE19906401C1 (de) * 1999-02-16 2000-08-31 Ranco Inc Of Delaware Wilmingt Abgasrückführsystem
AU2264301A (en) * 1999-12-14 2001-06-25 Cooperstandard Automotive Fluid Systems Integrated egr valve and cooler

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4147141A (en) * 1977-07-22 1979-04-03 Toyota Jidosha Kogyo Kabushiki Kaisha Exhaust gas recirculation system in an internal combustion engine
US20050039729A1 (en) * 2002-01-26 2005-02-24 Behr Gmbh & Co Kg Exhaust gas heat exchanger
EP1510739A1 (fr) * 2003-08-28 2005-03-02 Gustav Wahler GmbH u. Co.KG Soupape d'échappement
EP1555421A2 (fr) * 2004-01-19 2005-07-20 Mahle Tennex Corporation Dispositif de recirculation de gaz d'échappement d'un moteur à combustion interne

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2071171A1 (fr) * 2007-12-10 2009-06-17 smk systeme metall kunststoff gmbh & co. Dispositif à clapets pour un système de recirculation des gaz d'échappement

Also Published As

Publication number Publication date
DE102005012842A1 (de) 2006-09-21

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