EP2017456B1 - Système de recirculation de gaz d'échappement - Google Patents

Système de recirculation de gaz d'échappement Download PDF

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Publication number
EP2017456B1
EP2017456B1 EP08016269A EP08016269A EP2017456B1 EP 2017456 B1 EP2017456 B1 EP 2017456B1 EP 08016269 A EP08016269 A EP 08016269A EP 08016269 A EP08016269 A EP 08016269A EP 2017456 B1 EP2017456 B1 EP 2017456B1
Authority
EP
European Patent Office
Prior art keywords
valve
exhaust gas
bypass
gas recirculation
recirculation system
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 - Lifetime
Application number
EP08016269A
Other languages
German (de)
English (en)
Other versions
EP2017456A1 (fr
Inventor
Bernhard Klipfel
Alan-Keith Pelczyk
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.)
Cooper Standard Automotive Deutschland GmbH
Original Assignee
Cooper Standard Automotive Deutschland 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 Cooper Standard Automotive Deutschland GmbH filed Critical Cooper Standard Automotive Deutschland GmbH
Priority to DE50115663T priority Critical patent/DE50115663D1/de
Publication of EP2017456A1 publication Critical patent/EP2017456A1/fr
Application granted granted Critical
Publication of EP2017456B1 publication Critical patent/EP2017456B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F02M26/65—Constructional details of EGR valves
    • F02M26/71—Multi-way 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
    • 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
    • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/38—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with two or more EGR valves disposed in parallel
    • 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
    • F02M26/29—Constructional details of the coolers, e.g. pipes, plates, ribs, insulation or materials
    • F02M26/32—Liquid-cooled heat exchangers
    • 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
    • F02M26/53—Systems for actuating EGR valves using electric actuators, e.g. solenoids
    • 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
    • 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
    • F02M26/66—Lift valves, e.g. poppet valves
    • F02M26/67—Pintles; Spindles; Springs; Bearings; Sealings; Connections to actuators
    • 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
    • F02M26/66—Lift valves, e.g. poppet valves
    • F02M26/69—Lift valves, e.g. poppet valves having two or more valve-closing members
    • 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
    • F02M26/70—Flap valves; Rotary valves; Sliding valves; Resilient valves

Definitions

  • the invention relates to an exhaust gas recirculation system according to the preamble of claim 1.
  • An exhaust gas recirculation system is known from DE 199 06 401 Applicant is aware of this and has a radiator through which the exhaust gas flows, a bypass which bypasses the radiator, and a valve which selectively closes the radiator inlet or the bypass. This can be controlled depending on the operating condition of the engine, whether the Exhaust gas flows through the radiator and is thus cooled, or whether the radiator, for example in the cold-running phase of the engine, is bypassed, so that the exhaust gas maintains its outlet temperature.
  • the DE 197 33 964 A1 discloses a valve assembly for controlling a recirculated exhaust gas flow wherein the two valve discs have a common actuating mechanism for opening and closing the radiator inlet and for opening and closing the bypass. The actuation to open the respective valve disk is carried out by supporting the other, closed valve.
  • the DE 296 11 034 U1 discloses an arrangement for dissipating the heat loss of an internal combustion engine, in which two lines are opened or closed by a common rotationally actuated valve element. However, one line can not be opened independently of the other.
  • the EP 0 489 263 A2 relates to an exhaust gas recirculation system with a radiator and a bypass, whose lines are each closed by a valve which is connected in the form of the suction line with a vacuum source.
  • the invention has for its object to provide an exhaust gas recirculation system, in which in more effective Way, and with a simple construction of the entire valve assembly, a control of the exhaust gas temperature can be achieved by an optional flow through the radiator or the bypass.
  • a radiator valve which is for opening and closing the radiator supply
  • a bypass valve which is for opening and closing the bypass
  • the two valves on a common drive in the form of a rotatable in two directions rotary drive.
  • a rotary drive has been found that it can ensure the necessary opening and closing of the two valves particularly reliable and durable.
  • the structure of the valve assembly can be kept simple by using a common rotary drive.
  • a common valve element for the radiator and the bypass valve which selectively opens the radiator inlet or the bypass, and closes the respective other inlet or both lines.
  • Such a common valve element can be moved particularly reliably by a rotary drive.
  • valves are provided such that each of the two valves can be opened independently of the closed state of the other valve.
  • the arrangement is such that, suitably, both lines can be closed, and further that one of the two lines can be opened while the other remains closed.
  • the mass flow through the radiator or the bypass is adjustable while the respective other element remains completely closed.
  • the radiator and the bypass valve are formed by a common valve element, which, as detailed below, can be designed such that one of the two valves is closed, while the other is opened, and its opening state is adjustable.
  • the rotary drive is an electric motor with a suitable gear, a drive with a rotary magnet, a torque motor, a stepping motor or a DC motor.
  • the two valves are biased in their respective closed position, so that no exhaust gas recirculation takes place without actuation of the drive, which may be desirable in certain situations.
  • the rotary drive has a rotary member or acts on this, which has a thread, and further an actuator is provided with a thread.
  • both rotary elements are provided which have a right- or a left-hand thread, wherein the actuating element of the one valve has a thread of one direction, and the actuating element of the other valve has a thread of the other direction.
  • both actuators are actuated during the rotation of the rotary drive, wherein only one of the two actuators is moved in a direction to open the valve.
  • the other actuator runs in a sense into the void.
  • a common rotary drive embodiment in which a plurality of rotary elements are present, each having a cam.
  • a plurality of rotary elements are present, each having a cam.
  • a rotary valve may be provided to extend along its circumference over the adjacent openings of the radiator passage and the bypass.
  • one of the two openings can be partially or arbitrarily adjusted by turning the rotary valve, while the other opening remains closed.
  • a disc may be provided with at least one recess which rotates about the disc axis.
  • the exhaust gas recirculation system has a section in which a radiator 10 and a bypass bypass 12 bypassing the radiator are provided.
  • the exhaust gas due to the air supply system of an internal combustion engine flows through either the radiator 10 or the bypass 12, depending on the position of the two valves 16 opening and closing the radiator inlet and 18 opening and closing the bypass
  • both flows are partially opened, so that the respective proportion of the exhaust gas can be controlled, which flows through the radiator 10 and the bypass 12.
  • the temperature of the exhaust gas can be adjusted depending on the running state of the engine.
  • the two valves 16, 18 each have a valve plate 20, 22, which cooperates with an associated valve seat for closing the respective inlet.
  • the two valve rods 24, 26 are further designed such that the valve rod 24 of the cooling valve 16 is guided in the valve rod 26 of the bypass valve 18.
  • the opening movement it should be noted that the cooler valve 16 is opened by moving upward, while the bypass valve 18 is opened by a downward movement.
  • valve 16 is opened by the valve plate 20 is raised when a negative pressure is applied to the associated vacuum chamber 38.
  • valve plate 22 of the bypass valve 18 moves downward, and the valve opens when a negative pressure is applied to the vacuum chamber 36.
  • valves 16, 18 as such including the valve rods 24, 26 similar to the embodiment of the Fig. 1 designed. However, they are not provided at their respective upper area with a membrane, but only with a respective plate-like element 42, via which the force generated when opening the valve in the respective compression spring 28, 30 force is transmitted to the valve rod 24, 26.
  • the actuation of the two valves takes place in this case via a rotary drive, which is provided in the case shown as a DC motor 44.
  • the rotation of the DC motor 44 is transmitted to a gear 46 which has a thread on its hub, so that rotation of the gear 46 is transmitted to a translationally guided actuator.
  • bypass valve 18 can be opened by rotation on the gear 46 is applied in a different direction, and the actuator 48 is pushed to the left accordingly.
  • a compression spring 28 provides for closing the radiator valve 16 and remaining in the closed position.
  • the actuating element 48 is displaced to the left by a suitable direction of rotation of the motor 44, and its end comes off from the left end of the valve rod 24 of the cooler valve 16 according to the figure.
  • a Compression spring 30 is provided to bias the valve in its closed position.
  • the optional opening and closing of the radiator valve 16 and the bypass valve 18 by a common rotary drive in the form of a DC motor 44 in the form of a DC motor 44.
  • the rotation of the DC motor 44 is converted via gears in a sliding movement of actuators 48 and 50.
  • one gear 46 has a right-hand thread 52
  • the other gear 54 has a left-hand thread 56.
  • the rotary motor 44 rotates, the corresponding thread of one gear causes movement of the respective actuator 48, 50 in a direction to open the radiator 16 or by-pass valve 18 against the force of the compression spring 28, 30.
  • the other actuator 50 moves each away from the associated valve, so that it runs into the void, and the non-open valve remains closed.
  • the motor is rotated in the other direction so that the actuator of the open valve moves away from it, the valve by the force of the compression spring in the closed position is returned, and the actuator is henceforth from the end of the valve stem out of contact.
  • the last considered actuator moves away from the valve, while the other actuator pushes the other valve against the force of the compression spring.
  • the motor 44 is rotated in such a way that the gear 46 rotates counterclockwise, the associated lever 62 is deflected to the left, and this deflection movement is transmitted through a perpendicular to the plane extending bar on the flap which on this rod is attached so that one of the two valves is opened.
  • an actuation of the last considered valve is effected in that the rotary drive is rotated in the other direction, so that the gear 46 in the clockwise direction rotates, and due to the corresponding configuration of the cam 58, no actuation of the lever 62 takes place, but the meshing with the gear 46 gear 54 is rotated counterclockwise, so that the actuating contour of the cam 60 deflects the lift 64, and the flap of the other valve is opened.
  • FIG. 7 an embodiment of the exhaust gas recirculation system according to the invention is shown, in which the radiator and the bypass valve have a common valve element, on the one hand, as in Fig. 7 can be seen, both inlets can close, so that no exhaust gas recirculation takes place.
  • the actuation of the valve element 48 is carried out according to the invention by a rotary drive, which acts on a perpendicular to the plane extending actuating rod. This rotary drive can be provided due to the relatively slight angular movement as a stepper or so-called torque motor.
  • valve element 68 it is conceivable to use a DC motor, and convert its rotational movement via a suitable gear in a smaller rotational movement to realize the required low deflection of the valve member 68. It should also be noted that the connection of the valve element 68 with the actuating rod 70 via a spring element 72 which presses the valve element 68 against the two valve seats. Furthermore, the valve element in the case shown is comparatively thin-walled, but it can also be made thicker, for example, from the solid.
  • the end face of the. Cooler at which both the opening of the radiator, and, adjacent thereto, the opening of the bypass is located in essential plan can be designed.
  • Covering the opening may be provided with a disc having at least one suitable recess which surrounds one (in accordance with FIG Fig. 7 ) is rotatable in the plane lying axis. By turning the disk, the recess is adjustably aligned with one of the openings so that either the radiator or the bypass is opened and the opening condition can be adjusted while the other opening remains fully closed.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust-Gas Circulating Devices (AREA)
  • Mechanically-Actuated Valves (AREA)

Claims (6)

  1. Système de recirculation de gaz d'échappement, avec un refroidisseur (10), une dérivation (12), une soupape de refroidisseur (16) pour ouvrir et fermer l'amenée au refroidisseur, et une soupape de dérivation (18), pour ouvrir et fermer la dérivation (12), où
    la soupape de refroidisseur (16) et la soupape de dérivation (18) présentent un entraînement commun, et chacune des deux soupapes (16, 18) est susceptible d'être ouverte, indépendamment de l'état de fermeture de l'autre soupape (16, 18),
    caractérisé en ce que
    l'entraînement est réalisé sous la forme d'un entraînement en rotation (44) susceptible de tourner dans deux sens, précisément sous la forme
    d'un moteur électrique avec une transmission appropriée, un entraînement avec un aimant rotatif, un moteur-couple, un moteur pas-à-pas ou un moteur à courant continu, et
    en ce que la soupape de refroidisseur (16) et la soupape de dérivation (18) présentent un élément de soupape (68) commun, obturant au choix l'amenée au refroidisseur ou la dérivation (12), ou les deux conduites.
  2. Système de recirculation de gaz d'échappement selon la revendication 1, caractérisé en ce que les deux soupapes (16, 18) sont précontraintes dans la position fermée.
  3. Système de recirculation de gaz d'échappement selon la revendication 1 ou 2, caractérisé en ce que l'entraînement en rotation (44) présente au moins un élément rotatif (56, 54), muni d'un filetage.
  4. Système de recirculation de gaz d'échappement selon la revendication 3, caractérisé en ce que deux éléments rotatifs (46, 54) sont prévus, présentant un filetage à pas à droite (52), ou un filetage à pas à gauche (56).
  5. Système de recirculation de gaz d'échappement selon la revendication 3, caractérisé en ce que deux éléments rotatifs (46, 54) sont prévus, présentant chacun une came (58, 60).
  6. Système de recirculation de gaz d'échappement selon l'une des revendications précédentes, caractérisé en ce que l'élément de soupape (68) commun est un registre rotatif ou un disque comportant au moins un évidement.
EP08016269A 2001-07-11 2001-07-11 Système de recirculation de gaz d'échappement Expired - Lifetime EP2017456B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE50115663T DE50115663D1 (de) 2001-07-11 2001-07-11 Abgasrückführungssystem

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP01116604A EP1275838A1 (fr) 2001-07-11 2001-07-11 Système de recirculation de gaz d'échappement

Related Parent Applications (2)

Application Number Title Priority Date Filing Date
EP01116604.8 Division 2001-07-11
EP01116604A Division EP1275838A1 (fr) 2001-07-11 2001-07-11 Système de recirculation de gaz d'échappement

Publications (2)

Publication Number Publication Date
EP2017456A1 EP2017456A1 (fr) 2009-01-21
EP2017456B1 true EP2017456B1 (fr) 2010-10-13

Family

ID=8177987

Family Applications (2)

Application Number Title Priority Date Filing Date
EP08016269A Expired - Lifetime EP2017456B1 (fr) 2001-07-11 2001-07-11 Système de recirculation de gaz d'échappement
EP01116604A Withdrawn EP1275838A1 (fr) 2001-07-11 2001-07-11 Système de recirculation de gaz d'échappement

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP01116604A Withdrawn EP1275838A1 (fr) 2001-07-11 2001-07-11 Système de recirculation de gaz d'échappement

Country Status (5)

Country Link
EP (2) EP2017456B1 (fr)
AT (1) ATE484670T1 (fr)
DE (1) DE50115663D1 (fr)
ES (1) ES2351537T3 (fr)
PT (1) PT2017456E (fr)

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WO2008087045A1 (fr) * 2007-01-19 2008-07-24 Behr Thermot-Tronik Gmbh Dispositif soupape pour caloporteur
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DE102007033925A1 (de) 2007-07-20 2009-01-22 Volkswagen Ag Abgasrückführeinrichtung
DE102007048301B4 (de) * 2007-10-08 2011-07-07 Benteler Automobiltechnik GmbH, 33102 Ventilanordnung eines Abgasrückführungssystems
EP2133546B1 (fr) * 2008-06-12 2011-08-17 Kia Motors Corporation Dispositif de recirculation des gaz d'échappement et véhicule
DE102009036284A1 (de) * 2009-08-06 2011-02-24 Pierburg Gmbh Ventilvorrichtung für eine Verbrennungskraftmaschine
EP2357350B1 (fr) * 2010-02-16 2012-10-31 Kamtec Inc. Vanne de recyclage des gaz d'échappement pour véhicule
US8281771B2 (en) 2010-02-16 2012-10-09 Kamtec Inc. Exhaust gas recirculation valve in vehicle
DE102016200510A1 (de) 2016-01-18 2017-07-20 Bayerische Motoren Werke Aktiengesellschaft Vorrichtung und Verfahren zur Abgasrückführung
DE102018212663B3 (de) * 2018-07-30 2019-11-28 Hanon Systems Kombiniertes AGR- und Abgaskühler-Ventil
EP3719295B8 (fr) * 2019-04-02 2021-12-29 Vitesco Technologies GmbH Soupape d'ouverture et de fermeture d'une conduite de gaz d'échappement et système d'acheminement des gaz d'échappement
CN113464324A (zh) * 2021-07-27 2021-10-01 无锡双翼汽车环保科技有限公司 一种多通道egr冷却器

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Also Published As

Publication number Publication date
EP2017456A1 (fr) 2009-01-21
PT2017456E (pt) 2010-12-02
ATE484670T1 (de) 2010-10-15
DE50115663D1 (de) 2010-11-25
EP1275838A1 (fr) 2003-01-15
ES2351537T3 (es) 2011-02-07

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