EP1630403B1 - Dispositif à soupape à deux voies réglable pour moteur à combustion interne - Google Patents

Dispositif à soupape à deux voies réglable pour moteur à combustion interne Download PDF

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Publication number
EP1630403B1
EP1630403B1 EP05013906A EP05013906A EP1630403B1 EP 1630403 B1 EP1630403 B1 EP 1630403B1 EP 05013906 A EP05013906 A EP 05013906A EP 05013906 A EP05013906 A EP 05013906A EP 1630403 B1 EP1630403 B1 EP 1630403B1
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EP
European Patent Office
Prior art keywords
valve
openings
adjustable
inlet
angular range
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.)
Not-in-force
Application number
EP05013906A
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German (de)
English (en)
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EP1630403A1 (fr
Inventor
Peter Rütten
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Pierburg GmbH
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Pierburg GmbH
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Publication of EP1630403A1 publication Critical patent/EP1630403A1/fr
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Publication of EP1630403B1 publication Critical patent/EP1630403B1/fr
Not-in-force 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
    • F02M26/70—Flap valves; Rotary valves; Sliding valves; Resilient 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
    • F02M26/52—Systems for actuating EGR valves
    • F02M26/53—Systems for actuating EGR valves using electric actuators, e.g. solenoids
    • F02M26/54—Rotary actuators, e.g. step motors
    • 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 controllable two-way valve device for an internal combustion engine according to the preamble of the main claim.
  • Such two-way valve devices are known, for example, as combined exhaust gas recirculation and bypass valve devices in which two valve members are translationally actuated via a continuously variable actuator to reduce the pollutant emissions of an internal combustion engine by the exhaust gas is passed through the bypass channel in the warm-up phase and after Heating a catalyst, the exhaust gas is supplied via the exhaust gas cooler of the internal combustion engine.
  • DE 100 25 877 describes an exhaust gas recirculation system having a valve device which has an exhaust gas inlet and two exhaust gas outlets, one of the exhaust gas outlets leading to a cooler and the other exhaust gas outlet being fluidically connected to a bypass channel bypassing the cooler.
  • a valve seat is disposed between the exhaust gas inlet and the two exhaust gas outlets, which are each controlled by a plate-shaped valve member.
  • the valve members are arranged on a valve rod, which is translationally movable via an actuating unit, wherein the first valve member is mounted on a first valve rod and the second, closer to the actuator valve member disposed on a first valve rod surrounding the second tubular valve rod is fixed.
  • the actuator is designed so that in the actuator unit two springs are arranged, via which the two valve plates are biased pressed onto their valve seats.
  • the inner and the outer valve rod are each arranged displaceable relative to each other, so that the pneumatic or electromotive actuator is designed so that, depending on Movement direction only one of the valve rods and thus only one of the two valve members is lifted from the corresponding valve seat.
  • DE 198 12 702 A1 describes a valve arrangement for controlling a recirculated exhaust gas flow, wherein it is arranged behind a bypass passage and an exhaust gas cooler, so that this valve arrangement has two inlets and one outlet.
  • the two respectively corresponding with a valve seat, arranged on the valve stem valve members are pressed via two arranged in the channel coil springs in each case on the valve seat.
  • Both valve members each have a bore in the center through which at least partially extends the common valve rod.
  • two collars are formed, via which the valve members can be actuated individually in the opening direction against the spring force via the collar upon actuation of the valve rod, wherein the respective other valve member to slide on the valve stem, as it is pressed by the spring force on the valve seat becomes.
  • valve devices in different applications where these are usually controlled electromagnetically.
  • corresponding bores are arranged in the movable armature of the solenoid valves, which correspond to trained in the housing Einrytician outlets.
  • These valves are usually designed so that exactly two or three different positions of the armature can be controlled to connect the different paths to each other.
  • These are usually not continuously adjustable and are not suitable, for example, for regulated exhaust gas recirculation via a cooler or a bypass, since the movable armature in the current would be sensitive to dirt and sufficient flow cross sections are not guaranteed in such valves.
  • DE 101 01 412 A1 discloses an exhaust gas recirculation device in the form of a rotary slide valve for an internal combustion engine.
  • a disk-shaped switching element is rotatably rotated via an actuating unit.
  • the switching element has control openings which correspond to passage openings in a valve plate, these passage openings each having an end to the air intake duct system leading channels.
  • such a valve is not usable as a two-way valve device, since the outlet channels can not be opened or closed individually, but only together and simultaneously, so that each outlet channel an identical mass flow is provided.
  • a control device for the heating and cooling circuit of an internal combustion engine is known, which is designed as a two-way valve device in the form of a rotary slide valve.
  • the valve includes a control port, which corresponds to three outlet openings and an inlet opening, wherein in each case two fluid streams are controlled by rotation of the valve member dependent on each other.
  • the structure of such a device remains very expensive and is sensitive to dirt.
  • only a single valve member should be necessary if possible. This is to cost and weight advantages can be achieved.
  • a Applicability in the field of exhaust gas recirculation should be maintained, so that a high dirt resistance must be present.
  • the first control opening of the valve member which is designed substantially as a valve plate, extends in the circumferential direction over an angular range which is substantially equal to the angular range which is spanned by the center axes of the valve plate extending central axes of the two passage openings.
  • it is possible to change both mass flows thus the mass flow through the first inlet or outlet channel and the second inlet or outlet channel depending on each other, the total mass flow remains constant.
  • the exhaust gas area with cooler or bypass duct it would thus be possible to drive at a constant mass flow different temperatures. At the same time a mass flow change is possible at the same temperature.
  • the second control opening of the at least one valve disk extends in the circumferential direction over an angular range which is substantially equal to the angular range which is spanned by a connection of the two facing away outer edges of the passage openings with the center of the valve plate.
  • a temperature control is dependent on the temperature changing mass flow possible, since at constant opening one of the two first and second inlet and outlet channels simultaneously the other remains controllable.
  • the valve disk has substantially equal, closed surfaces between the two control openings, so that the passage openings can be closed at the same time.
  • all the advantages described above are realized by means of a single valve member. Both a complete closure of the passages is possible as well as a mass flow change at a constant temperature. Furthermore, a mass flow control in response to a temperature control is possible and a temperature control at constant mass flow.
  • the passage openings extend in the circumferential direction over an angular range of 45 °
  • the first control surface of the valve disk extends in the circumferential direction over an angular range of 50 °
  • the second control opening of the valve disk over an angular range of 95 ° and the two closed surfaces of the valve disk extend in the circumferential direction in each case over an angular range of 107.5 °.
  • valve seats are formed at the passage openings, which are designed as scraping edges facing the valve disk, and surround the respective ends of the first and the second inlet or outlet channel.
  • scraping edges as valve seats have the advantage that, for example, when used in the field of exhaust gas recirculation, despite the temperatures and possibly existing soot particles, these contaminants are sheared off by the scraping edges and the relative rotation of valve disk and valve plate, so that the valve is insensitive to dirt.
  • the controllable two-way valve device is arranged in an exhaust gas recirculation line, wherein the first inlet or outlet channel is fluidly connected to an exhaust gas cooler, the second inlet or outlet channel is fluidly connected to a bypass channel bypassing the exhaust gas cooler and the third outlet or inlet channel is connected to an air intake duct system or an exhaust manifold. Accordingly, the arrangement of the valve device takes place in the exhaust stream either before or after the exhaust gas cooler and the bypass line. Due to the large number of options for regulating such a two-way valve is particularly suitable to be used in this area.
  • a two-way valve device which combines with only one valve member a variety of control functions in itself, is dirt-resistant and has a long service life with a small size.
  • Figure 1 shows a side view of an adjustable two-way valve device according to the invention in a sectional view.
  • Figure 2 shows schematically different positions of a valve disc of a two-way valve device according to the invention to a valve plate in plan view.
  • the two-way valve device 1 shown in Figure 1 is designed as a rotary valve and has a multi-part housing 2, in which three channels 3, 4, 5 are arranged.
  • the first channel 3 can be arranged, for example behind an exhaust gas cooler and thus serve as an inlet channel for the rotary valve 1.
  • the second channel 4 may be connected to a bypass channel surrounding the exhaust gas cooler and also serve as an inlet channel.
  • the channel 5 would in this case be connected to a leading to an air intake duct exhaust channel.
  • the third channel 5 as an inlet channel and this with an exhaust manifold to connect.
  • the two channels 3, 4 then serving as outlet channel would accordingly form the connections to an exhaust gas cooler and a bypass channel bypassing the exhaust gas cooler.
  • valve plate 6 which has to the channels 3, 4 corresponding passage openings 7, 8, which can be square, round, elliptical, etc. executed.
  • the passage openings 7, 8 are each surrounded by narrow webs, which serve as valve seats or scraping edges 9.
  • valve seats 9 corresponds to a valve member 10, which is designed as a valve plate.
  • This valve disk 10 is rotatably moved by a driver 11 which is rotatably connected to the valve disk 10 and also at least rotationally fixed to a rotational axis 12, upon rotation of the axis of rotation. The movement is transmitted via the axis of rotation 12, a coupling member 13, which establishes a connection between the axis of rotation 12 and a shaft 14 and the shaft 14, which is part of an actuating unit 15, which is preferably operated by an electric motor.
  • a spring 16 is arranged in the housing 2, via which an axial force is transmitted to the axis of rotation 12.
  • the valve member or the valve disk 10 has one or more control openings 17, 18, via which a fluidic connection of one or both of the inlet channels 3, 4 to the outlet channel 5 can be produced.
  • the mass flow can be changed by rotation of the valve disk 10 on the valve plate 6 according to the thereby opened cross-section.
  • FIG. 2 A preferred example of an embodiment of a valve plate 6 to a valve plate 10 is shown in Figure 2, wherein Figure 2 a shows a plan view of the valve plate 6 and Figure 2b shows a plan view of the valve disk 10.
  • Figure c to f are different examples Rotary positions of the valve member 10 to the valve plate 6 for ease of description of the functions shown.
  • the passage openings 7, 8 which are designed to be round in the present embodiment, each have a center M of the valve plate reaching center axes. An angle range ⁇ is formed by these center axes.
  • an angular range ⁇ is enclosed by the mutually remote outer edges of these passage openings 7, 8.
  • the passage openings 7, 8 are arranged to each other such that the closed angle range between the two passage openings is about 5 °, while extending through the center M of the valve plate 6 extensions of the outer edges of the two passage openings 7 and 8 each have an angle of 45 ° include. Accordingly, the angle range ⁇ is about 50 ° and the angular range ⁇ 95 °.
  • FIG b the corresponding corresponding control openings 17, 18 of the valve disk are shown.
  • the first control opening 17 in turn extends over the angular range ⁇ of 50 °
  • the second control opening 18 in turn extends over the angular range ⁇ of 95 °.
  • Between the control openings 17, 18 are each closed surfaces 19, 20 each extending over an angular range ⁇ of about 107.5 °.
  • control openings 17, 18 The interaction of the control openings 17, 18 with the passage openings 7, 8 is illustrated by the figures c to f.
  • FIG. D shows a position in which, for example, no exhaust gas recirculation is desired, and thus both passage openings 7, 8 are closed by one of the surfaces 19, 20.

Landscapes

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

Claims (7)

  1. Dispositif à soupape à deux voies réglable pour un moteur à combustion interne comprenant un corps, dans lequel sont disposés un premier et un deuxième conduit d'admission ou d'échappement (3, 4), un troisième conduit d'échappement ou d'admission (5) et au moins un organe de soupape (10), le au moins un organe de soupape (10) pouvant être déplacé au moins indirectement en rotation par l'intermédiaire d'une unité de réglage (15) de telle sorte qu'une liaison fluidique peut être créée sélectivement entre le premier ou le second conduit d'admission ou d'échappement (3, 4) et le troisième conduit d'échappement ou d'admission (5), le dispositif à soupape à deux voies réglable (1) étant alors réalisé sous forme de soupape à tiroir rotatif, caractérisé en ce que le dispositif à soupape (1) présente un disque de soupape (6), sur lequel sont réalisées au moins une première ouverture de passage (7) du premier conduit d'admission ou d'échappement (3) et une seconde ouverture de passage (8) du deuxième conduit d'admission ou d'échappement (4), les ouvertures de passage (7, 8) correspondant à au moins deux orifices de commande (17, 18), réalisés sur l'organe de soupape (10), les au moins deux orifices de commande (17) étant disposés par rapport aux deux ouvertures de passage (7, 8) de telle sorte que, pour des débits-masses de fluide au travers des ouvertures de passage (7, 8), sélectivement
    - l'autre ouverture de passage respective (8; 7) est réglable en position d'ouverture totale de la première ou de la seconde ouverture de passage (7 ; 8),
    - l'autre ouverture de passage respective (8 ; 7) est réglable en position de fermeture totale de la première ou de la seconde ouverture de passage (7, 8) ou
    - les ouvertures de passage (7, 8) sont réglables en fonction l'une de l'autre.
  2. Dispositif de soupape à deux voies réglable pour un moteur à combustion interne suivant la revendication 1, caractérisé en ce que le premier orifice de commande (17) de l'organe de soupape (10), qui est réalisé essentiellement sous forme de tête de soupape, s'étend dans la direction périphérique sur une plage angulaire α, qui est essentiellement égale à la plage angulaire α, définie par les axes médians, passant au travers d'un centre M du disque de soupape (6), des deux ouvertures de passage (7, 8).
  3. Dispositif à soupape à deux voies réglable pour un moteur à combustion interne suivant la revendication 2, caractérisé en ce que le second orifice de commande (18) de la tête de soupape (10) s'étend dans la direction périphérique sur une plage angulaire β, qui est essentiellement égale à la plage angulaire β définie par une jonction des deux bords extérieurs, distants l'un de l'autre, des ouvertures de passage (7, 8) avec le centre M du disque de soupape (6).
  4. Dispositif à soupape à deux voies réglable pour un moteur à combustion interne suivant la revendication 3, caractérisé en ce que la tête de soupape (10) présente entre les deux orifices de commande (17, 18) des surfaces fermées (19, 20) de dimensions essentiellement égales, de sorte que les ouvertures de passage (7, 8) peuvent être fermées simultanément.
  5. Dispositif à soupape à deux voies réglable pour un moteur à combustion interne suivant la revendication 4, caractérisé en ce que les ouvertures de passage (7, 8) du disque de soupape (6) s'étendent dans la direction périphérique sur une plage angulaire de 45°, la plage angulaire α entre les axes médians des ouvertures de passage (7, 8) passant par le centre M du disque de soupape (6) est de 50° dans la direction périphérique, le premier orifice de commande (17) de la tête de soupape (10) s'étend dans la direction périphérique sur une plage angulaire de 50°, le second orifice de commande (18) de la tête de soupape (10) s'étend dans la direction périphérique sur une plage angulaire β de 95°, et les deux surfaces fermées (19, 20) de la tête de soupape (10) s'étendent chacune dans la direction périphérique sur une plage angulaire γ de 107,5°.
  6. Dispositif à soupape à deux voies réglable pour un moteur à combustion interne suivant l'une des revendications précédentes, caractérisé en ce que des sièges de soupape (9) sont réalisés sur les ouvertures de passage (7, 8), lesquels sièges sont réalisés sous forme de bords de raclage orientés en direction de la tête de soupape (10), et entourent des extrémités respectives du premier et du deuxième conduit d'admission ou d'échappement (3, 4).
  7. Dispositif à soupape à deux voies réglable pour un moteur à combustion interne suivant l'une des revendications précédentes, caractérisé en ce que le dispositif à soupape à deux voies réglable (1) est disposé dans une conduite de recyclage des gaz d'échappement, le premier conduit d'admission ou d'échappement (3) étant en liaison fluidique avec un refroidisseur de gaz d'échappement, le deuxième conduit d'admission ou d'échappement (4) étant en liaison fluidique avec un conduit de bipasse qui entoure le refroidisseur de gaz d'échappement, et le troisième conduit d'échappement ou d'admission (5) étant raccordé à un système de conduit d'admission d'air ou à un collecteur de gaz d'échappement.
EP05013906A 2004-08-19 2005-06-28 Dispositif à soupape à deux voies réglable pour moteur à combustion interne Not-in-force EP1630403B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102004040221A DE102004040221B4 (de) 2004-08-19 2004-08-19 Regelbare Zwei-Wege-Ventilvorrichtung für eine Verbrennungskraftmaschine

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EP1630403A1 EP1630403A1 (fr) 2006-03-01
EP1630403B1 true EP1630403B1 (fr) 2007-01-10

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US (1) US7213587B2 (fr)
EP (1) EP1630403B1 (fr)
DE (2) DE102004040221B4 (fr)
ES (1) ES2280065T3 (fr)

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EP1801407B1 (fr) * 2004-09-28 2012-03-28 T.RAD Co., Ltd. Refroidisseur egr
US7669645B2 (en) 2004-09-28 2010-03-02 T. Rad Co., Ltd. Heat exchanger
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FR2908156A3 (fr) * 2006-11-03 2008-05-09 Renault Sas Methode de diagnostic appliquee a un groupe motopropulseur
CA2774108C (fr) * 2009-09-14 2017-06-06 Nestec S.A. Emballage a opercule en aluminium, et organes de penetration
WO2011058504A1 (fr) * 2009-11-10 2011-05-19 University Of Kwazulu-Natal Dispositif de commande d'écoulement
RU2445473C2 (ru) * 2010-03-25 2012-03-20 Публичное акционерное общество "Волчанский агрегатный завод" (ПАО "ВАЗ") Распределитель
US9657464B2 (en) * 2010-05-25 2017-05-23 Kerry Dunki-Jacobs Flow control system
GB2528954B (en) * 2014-08-07 2017-05-24 Clyde Process Ltd Adjustable multi-hole orifice plate in a pneumatic conveying apparatus
DE102015004035A1 (de) 2015-03-27 2016-09-29 Daimler Ag Drehschieberventil für eine Abgasrückführeinrichtung
JP5997810B1 (ja) * 2015-06-30 2016-09-28 本田技研工業株式会社 エンジンの吸気構造
DE102018204903B4 (de) * 2018-03-29 2020-10-08 Vitesco Technologies GmbH Vorrichtung zur Nachbehandlung von Abgasen
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Also Published As

Publication number Publication date
DE502005000303D1 (de) 2007-02-22
US7213587B2 (en) 2007-05-08
DE102004040221B4 (de) 2009-01-08
ES2280065T3 (es) 2007-09-01
US20060037594A1 (en) 2006-02-23
EP1630403A1 (fr) 2006-03-01
DE102004040221A1 (de) 2006-03-09

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