WO2013160125A1 - Mixing valve of an internal combustion engine - Google Patents

Mixing valve of an internal combustion engine Download PDF

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Publication number
WO2013160125A1
WO2013160125A1 PCT/EP2013/057668 EP2013057668W WO2013160125A1 WO 2013160125 A1 WO2013160125 A1 WO 2013160125A1 EP 2013057668 W EP2013057668 W EP 2013057668W WO 2013160125 A1 WO2013160125 A1 WO 2013160125A1
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WO
WIPO (PCT)
Prior art keywords
mixing valve
flaps
pulleys
belt
flap
Prior art date
Application number
PCT/EP2013/057668
Other languages
German (de)
French (fr)
Inventor
Lothar Schröder
Original Assignee
Continental Automotive 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 Continental Automotive Gmbh filed Critical Continental Automotive Gmbh
Publication of WO2013160125A1 publication Critical patent/WO2013160125A1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
    • F16K31/04—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor
    • F16K31/041—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor for rotating valves
    • F16K31/043—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor for rotating valves characterised by mechanical means between the motor and the valve, e.g. lost motion means reducing backlash, clutches, brakes or return means
    • 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
    • F02M26/17—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories in relation to the intake system
    • F02M26/21—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories in relation to the intake system with EGR valves located at or near the connection to the intake 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
    • F02M26/52—Systems for actuating EGR valves
    • F02M26/64—Systems for actuating EGR valves the EGR valve being operated together with an intake air throttle
    • 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
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
    • F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
    • F16K1/22—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
    • F16K1/223—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves with a plurality of valve members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
    • F16K11/10—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with two or more closure members not moving as a unit
    • F16K11/14—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with two or more closure members not moving as a unit operated by one actuating member, e.g. a handle
    • F16K11/16—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with two or more closure members not moving as a unit operated by one actuating member, e.g. a handle which only slides, or only turns, or only swings in one plane
    • F16K11/163—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with two or more closure members not moving as a unit operated by one actuating member, e.g. a handle which only slides, or only turns, or only swings in one plane only turns
    • F16K11/165—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with two or more closure members not moving as a unit operated by one actuating member, e.g. a handle which only slides, or only turns, or only swings in one plane only turns with the rotating spindles parallel to the closure 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
    • F02M26/52—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

Definitions

  • the invention relates to a mixing valve of an internal combustion engine of a motor vehicle having a flap arranged in an intake passage and a flap arranged in an exhaust gas passage, the intake passage and the exhaust passage opening into a common collecting channel, and having a drive device for driving the flaps. with a coupling device for coupling the movements of the flaps.
  • Such mixing valves are often used in exhaust gas recirculation systems of internal combustion engines of modern motor vehicles and are known from practice.
  • the movements of the flaps are controlled such that one flap closes the exhaust passage while the other flap opens the intake passage simultaneously or retarded.
  • the exhaust passage and the intake passage are respectively at least partially opened, the flows of the gases in the collection passage are mixed.
  • the flow rate of gases through the channels is affected by the merging of the flows of the exhaust passage and the intake passage.
  • the distance between the flaps is decisive for the optimum flow rate. With the distance of the flaps but usually also increases the space for the drive device. However, the space for such mixing valves in motor vehicles is usually very limited.
  • the invention is based on the problem, a mixing valve of the type mentioned in such a way that with only one drive, the flaps are driven to save space and trouble-free even at a great distance.
  • the drive means comprises a belt drive with a belt, wherein the flaps are connected to pulleys and the pulleys hold the belt.
  • the flaps can be arranged at an intended distance from each other.
  • large dimensions of the drive device are avoided by the belt drive. Therefore, the mixing valve is designed to save space even at long distances of the flaps.
  • Such a belt drive is also very susceptible to interference with tolerances of the components. Thanks to the invention, the mutual influence of the currents can be kept particularly low by a correspondingly large spacing of the flaps.
  • Another advantage of the mixing valve according to the invention is that it is very quiet. This design avoids unnecessarily large gears for coupling the flaps.
  • Noise developments of the drive device can be kept particularly low according to another advantageous embodiment of the invention, when the drive device has a gear and when the belt drive is arranged in the last gear stage.
  • the coupling of the movements of the flaps can be made slip-free according to an advantageous embodiment of the invention, when the belt drive has a toothed belt. In contrast to V-belts, toothed belts produce a positive connection with pulleys, so that slip-free power transmission is ensured.
  • the slip-free design of the coupling ensures that the positions of the flaps are fixed relative to each other.
  • the mixing valve has, according to another advantageous development of the invention, particularly few to be mounted
  • the mixing valve constructed very compact.
  • the pulleys are mounted directly on the shafts. If the pulleys are arranged eccentrically on the shafts, angle-dependent opening and closing speeds can also be generated. You can continue
  • the pulleys are preferably made by injection molding, for example, light metal or plastic.
  • the gear of the drive device can be easily manufactured with the pulley by injection molding.
  • the pulleys could each have the same diameter. As a result, the flaps would move at the same speed when driven by the drive means.
  • different pressure conditions in the exhaust passage and the intake passage can be easily considered according to another advantageous embodiment of the invention, when the pulleys have different diameters. This design allows the flaps to move at different speeds.
  • a fast compared to the intake port opening and closing of the exhaust passage can be easily achieved according to another advantageous embodiment of the invention, if a larger pulley is arranged on the shaft of the intake valve arranged in the flap than on the shaft of the flap arranged in the exhaust duct.
  • the invention allows numerous embodiments. To further clarify its basic principle, one of them is in the Drawing shown and will be described below. This shows in:
  • Fig. 1 shows an internal combustion engine with an inventive
  • FIG. 1 shows schematically an internal combustion engine 1 with an intake pipe 2 and with an exhaust pipe 3.
  • the intake pipe 2 has an intake passage 4, is sucked through the air from the environment. From the exhaust pipe 3, an exhaust passage 5 via a mixing valve 6 into the intake passage 2.
  • the mixing valve 6 performs the intake passage 4 and the exhaust passage 5 to a collecting channel 7 together.
  • the collecting channel 7 leads directly to the internal combustion engine 1.
  • a drive device 8 with an electromotive actuator 9 allows adjustment of the mixing valve 6.
  • Figure 2 shows the mixing valve 6 of Figure 1 with the drive device 8 shown here for simplicity only schematically.
  • the mixing valve 6 has a arranged in the intake passage 4 pivotable flap 10 and disposed in the exhaust passage 5 pivotable flap 11.
  • the arranged in the intake passage 4 flap 10 is slightly larger than the arranged in the exhaust passage 5 flap 11.
  • the flaps 10, 11 are on the single electromotive actuator. 9 driven.
  • the pivoting direction of the flaps 10, 11 extends in the same direction, as illustrated in the drawing with arrows.
  • the drive device 8 has a gear 12 with gears 13, 13 'and a coupling device 14 for coupling the movements of the flaps 10, 11.
  • the coupling device 14 has a belt drive 15.
  • On the flaps 10, 11 retaining shafts 16, 17 are pulleys 18, 19 arranged to receive a belt 20 of the belt drive 15.
  • the pulleys 18, 19 transmit the movements of the belt 20 from one shaft 16 to the other Wave 17 and have different diameters.
  • the pulley 18 for the shaft 16 of the flap 10 in the intake passage 4 is made in one piece with the last driven gear 13 'of the drive device 8.
  • the belt drive 15 may be a toothed belt drive.
  • the electromotive actuator 9 is arranged on the side facing away from the exhaust passage 5 of the intake passage 4 and the collecting channel 7.
  • the electromotive actuator 9 for example

Abstract

A mixing valve (6) of an internal combustion engine (1) of a motor vehicle with a flap (10) which is arranged in an intake duct (4) and a flap (11) which is arranged in an exhaust-gas duct (5) has a belt drive (15) for coupling the flaps (10, 11). In order to transmit the movements, belt pulleys (18, 19) are arranged on shafts (16, 17) which hold the flaps (10, 11). One of the belt pulleys (18) is driven via a single electric-motor actuating drive (9).

Description

Beschreibung description
Mischventil einer Brennkraftmaschine Die Erfindung betrifft ein Mischventil einer Brennkraftmaschine eines Kraftfahrzeuges mit einer in einem Ansaugkanal angeordneten Klappe und einer in einem Abgaskanal angeordneten Klappe, wobei der Ansaugkanal und der Abgaskanal in einen gemeinsamen Sammelkanal münden, und mit einer Antriebsein- richtung zum Antrieb der Klappen, mit einer Koppeleinrichtung zur Koppelung der Bewegungen der Klappen. The invention relates to a mixing valve of an internal combustion engine of a motor vehicle having a flap arranged in an intake passage and a flap arranged in an exhaust gas passage, the intake passage and the exhaust passage opening into a common collecting channel, and having a drive device for driving the flaps. with a coupling device for coupling the movements of the flaps.
Solche Mischventile werden bei Abgasrückführungs Systemen von Brennkraftmaschinen heutiger Kraftfahrzeuge häufig eingesetzt und sind aus der Praxis bekannt. Die Bewegungen der Klappen sind derart gesteuert, dass die eine Klappe den Abgaskanal schließt, während die andere Klappe den Ansaugkanal gleichzeitig oder verzögert öffnet. Sind der Abgaskanal und der Ansaugkanal jeweils zumindest teilweise geöffnet, werden die Strömungen der Gase in dem Sammelkanal gemischt. Der Strömungsdurchsatz der Gase durch die Kanäle wird durch die Zusammenführung der Strömungen des Abgaskanals und des Ansaugkanals beeinflusst. In der Praxis hat sich gezeigt, dass der Abstand der Klappen für den optimalen Strömungsdurchsatz maßgeblich ist. Mit dem Abstand der Klappen steigt jedoch meist auch der Bauraum für die Antriebseinrichtung. Jedoch ist der Bauraum für solche Mischventile in Kraftfahrzeugen meist sehr begrenzt. Such mixing valves are often used in exhaust gas recirculation systems of internal combustion engines of modern motor vehicles and are known from practice. The movements of the flaps are controlled such that one flap closes the exhaust passage while the other flap opens the intake passage simultaneously or retarded. When the exhaust passage and the intake passage are respectively at least partially opened, the flows of the gases in the collection passage are mixed. The flow rate of gases through the channels is affected by the merging of the flows of the exhaust passage and the intake passage. In practice, it has been shown that the distance between the flaps is decisive for the optimum flow rate. With the distance of the flaps but usually also increases the space for the drive device. However, the space for such mixing valves in motor vehicles is usually very limited.
Man könnte daran denken, die Klappen über ein Gestänge anzutreiben. Solche Gestänge können jedoch haken. One could think of driving the flaps over a linkage. However, such poles can hook.
Der Erfindung liegt das Problem zugrunde, ein Mischventil der eingangs genannten Art so weiterzubilden, dass mit nur einem Antrieb die Klappen auch bei großer Entfernung platzsparend und störungsfrei antreibbar sind. Dieses Problem wird erfindungsgemäß dadurch gelöst, dass die Antriebseinrichtung einen Riementrieb mit einem Riemen aufweist, wobei die Klappen mit Riemenscheiben verbunden sind und die Riemenscheiben den Riemen halten. The invention is based on the problem, a mixing valve of the type mentioned in such a way that with only one drive, the flaps are driven to save space and trouble-free even at a great distance. This problem is inventively solved in that the drive means comprises a belt drive with a belt, wherein the flaps are connected to pulleys and the pulleys hold the belt.
Durch diese Gestaltung können die Klappen auf einen vorgesehenen Abstand zueinander angeordnet sein. Große Dimensionen der Antriebseinrichtung werden durch den Riementrieb jedoch vermieden. Das Mischventil gestaltet sich daher auch bei großen Entfernungen der Klappen besonders platzsparend. Ein solcher Riementrieb ist zudem bei Toleranzen der Bauteile sehr stö- rungsunanfällig . Dank der Erfindung lässt sich die gegenseitige Beeinflussung der Strömungen durch eine entsprechend große Beabstandung der Klappen besonders gering halten. Ein weiterer Vorteil des erfindungsgemäßen Mischventils besteht darin, dass es sehr geräuscharm ist. Durch diese Gestaltung werden unnötig große Zahnräder zur Koppelung der Klappen vermieden. By this design, the flaps can be arranged at an intended distance from each other. However, large dimensions of the drive device are avoided by the belt drive. Therefore, the mixing valve is designed to save space even at long distances of the flaps. Such a belt drive is also very susceptible to interference with tolerances of the components. Thanks to the invention, the mutual influence of the currents can be kept particularly low by a correspondingly large spacing of the flaps. Another advantage of the mixing valve according to the invention is that it is very quiet. This design avoids unnecessarily large gears for coupling the flaps.
Geräuschentwicklungen der Antriebseinrichtung lassen sich gemäß einer anderen vorteilhaften Weiterbildung der Erfindung besonders gering halten, wenn die Antriebseinrichtung ein Getriebe hat und wenn der Riementrieb in der letzten Getriebestufe angeordnet ist. Die Koppelung der Bewegungen der Klappen lässt sich gemäß einer vorteilhaften Weiterbildung der Erfindung schlupffrei gestalten, wenn der Riementrieb einen Zahnriemen hat. Im Gegensatz zu Keilriemen erzeugen Zahnriemen eine formschlüssige Verbindung mit Riemenscheiben, so dass die schlupffreie Kraftübertragung gewährleistet ist. Durch die schlupffreie Gestaltung der Koppelungwird sichergestellt, dass die Positionen der Klappen relativ zueinander festgelegt sind. Noise developments of the drive device can be kept particularly low according to another advantageous embodiment of the invention, when the drive device has a gear and when the belt drive is arranged in the last gear stage. The coupling of the movements of the flaps can be made slip-free according to an advantageous embodiment of the invention, when the belt drive has a toothed belt. In contrast to V-belts, toothed belts produce a positive connection with pulleys, so that slip-free power transmission is ensured. The slip-free design of the coupling ensures that the positions of the flaps are fixed relative to each other.
Das Mischventil weist gemäß einer anderen vorteilhaften Wei- terbildung der Erfindung besonders wenige zu montierendeThe mixing valve has, according to another advantageous development of the invention, particularly few to be mounted
Bauteile auf, wenn Wellen, auf denen die Klappen befestigt sind, die Riemenscheiben des Riementriebs halten. Weiterhin ist hierdurch das Mischventil besonders kompakt aufgebaut. Vorzugsweise sind die Riemenscheiben unmittelbar auf den Wellen befestigt. Wenn die Riemenscheiben exzentrisch auf den Wellen angeordnet sind, lassen sich zudem winkelabhängige Öffnungs- und Schließgeschwindigkeiten erzeugen. Weiterhin lassen sichIf there are shafts on which the flaps are fastened, hold the pulleys of the belt drive. Furthermore is As a result, the mixing valve constructed very compact. Preferably, the pulleys are mounted directly on the shafts. If the pulleys are arranged eccentrically on the shafts, angle-dependent opening and closing speeds can also be generated. You can continue
Riemenscheibe und Welle wie eine Klauenkupplung gestalten und mit einem Totgang versehen, so dass die Welle erst nach einer vorgesehenen Drehung der Riemenscheibe mitgenommen wird. Die Riemenscheiben werden vorzugsweise im Spritzgussverfahren, beispielsweise aus Leichtmetall oder Kunststoff, gefertigt. Shaping the pulley and shaft like a dog clutch and providing a backlash so that the shaft will not move until after the intended rotation of the pulley. The pulleys are preferably made by injection molding, for example, light metal or plastic.
Zur weiteren Verringerung der Anzahl der zu montierenden Bauteile trägt es bei, wenn eines der Riemenscheiben einstückig mit einem Zahnrad der Antriebseinrichtung gefertigt ist. Das Zahnrad der Antriebseinrichtung lässt sich einfach mit der Riemenscheibe im Spritzgussverfahren fertigen. To further reduce the number of components to be mounted, it contributes, if one of the pulleys is made in one piece with a gear of the drive means. The gear of the drive device can be easily manufactured with the pulley by injection molding.
Die Riemenscheiben könnten jeweils den gleichen Durchmesser aufweisen. Hierdurch würden sich die Klappen beim Antrieb durch die Antriebseinrichtung in der gleichen Geschwindigkeit bewegen. Unterschiedliche Druckverhältnisse in dem Abgaskanal und dem Ansaugkanal lassen sich jedoch gemäß einer anderen vorteilhaften Weiterbildung der Erfindung einfach berücksichtigen, wenn die Riemenscheiben unterschiedliche Durchmesser aufweisen. Durch diese Gestaltung lassen sich die Klappen in unterschiedlichen Geschwindigkeiten bewegen. The pulleys could each have the same diameter. As a result, the flaps would move at the same speed when driven by the drive means. However, different pressure conditions in the exhaust passage and the intake passage can be easily considered according to another advantageous embodiment of the invention, when the pulleys have different diameters. This design allows the flaps to move at different speeds.
Ein im Vergleich zum Ansaugkanal schnelles Öffnen und Schließen des Abgaskanals lässt sich gemäß einer anderen vorteilhaften Weiterbildung der Erfindung einfach erreichen, wenn auf der Welle der im Ansaugkanal angeordneten Klappe eine größere Riemenscheibe angeordnet ist als auf der Welle der im Abgaskanal angeordneten Klappe . Die Erfindung lässt zahlreiche Ausführungsformen zu. Zur weiteren Verdeutlichung ihres Grundprinzips ist eine davon in der Zeichnung dargestellt und wird nachfolgend beschrieben. Diese zeigt in: A fast compared to the intake port opening and closing of the exhaust passage can be easily achieved according to another advantageous embodiment of the invention, if a larger pulley is arranged on the shaft of the intake valve arranged in the flap than on the shaft of the flap arranged in the exhaust duct. The invention allows numerous embodiments. To further clarify its basic principle, one of them is in the Drawing shown and will be described below. This shows in:
Fig. 1 eine Brennkraftmaschine mit einem erfindungsgemäßen Fig. 1 shows an internal combustion engine with an inventive
Mischventil,  Mixing valve,
Fig. 2 schematisch das Mischventil aus Figur 1. 2 shows schematically the mixing valve of Figure 1.
Figur 1 zeigt schematisch eine Brennkraftmaschine 1 mit einer Ansaugleitung 2 und mit einer Abgasleitung 3. Die Ansaugleitung 2 hat einen Ansaugkanal 4, über den Luft aus der Umgebung angesaugt wird. Von der Abgasleitung 3 führt ein Abgaskanal 5 über ein Mischventil 6 in die Ansaugleitung 2. Das Mischventil 6 führt den Ansaugkanal 4 und den Abgaskanal 5 zu einem Sammelkanal 7 zusammen. Der Sammelkanal 7 führt unmittelbar zu der Brennkraftmaschine 1. Eine Antriebseinrichtung 8 mit einem elektromotorischen Stellantrieb 9 ermöglicht eine Verstellung des Mischventils 6. Figur 2 zeigt das Mischventil 6 aus Figur 1 mit der hier zur Vereinfachung nur schematisch dargestellten Antriebseinrichtung 8. Das Mischventil 6 hat eine in dem Ansaugkanal 4 angeordnete schwenkbare Klappe 10 und eine in dem Abgaskanal 5 angeordnete schwenkbare Klappe 11. Die im Ansaugkanal 4 angeordnete Klappe 10 ist geringfügig größer als die im Abgaskanal 5 angeordnete Klappe 11. Die Klappen 10, 11 werden über den einzigen elektromotorischen Stellantrieb 9 angetrieben. Die Schwenkrichtung der Klappen 10, 11 verläuft gleichsinnig, wie es in der Zeichnung mit Pfeilen verdeutlicht ist. 1 shows schematically an internal combustion engine 1 with an intake pipe 2 and with an exhaust pipe 3. The intake pipe 2 has an intake passage 4, is sucked through the air from the environment. From the exhaust pipe 3, an exhaust passage 5 via a mixing valve 6 into the intake passage 2. The mixing valve 6 performs the intake passage 4 and the exhaust passage 5 to a collecting channel 7 together. The collecting channel 7 leads directly to the internal combustion engine 1. A drive device 8 with an electromotive actuator 9 allows adjustment of the mixing valve 6. Figure 2 shows the mixing valve 6 of Figure 1 with the drive device 8 shown here for simplicity only schematically. The mixing valve 6 has a arranged in the intake passage 4 pivotable flap 10 and disposed in the exhaust passage 5 pivotable flap 11. The arranged in the intake passage 4 flap 10 is slightly larger than the arranged in the exhaust passage 5 flap 11. The flaps 10, 11 are on the single electromotive actuator. 9 driven. The pivoting direction of the flaps 10, 11 extends in the same direction, as illustrated in the drawing with arrows.
Die Antriebseinrichtung 8 hat ein Getriebe 12 mit Zahnrädern 13, 13' und eine Koppeleinrichtung 14 zur Koppelung der Bewegungen der Klappen 10, 11. Die Koppeleinrichtung 14 hat einen Riementrieb 15. Auf die Klappen 10, 11 haltenden Wellen 16, 17 sind Riemenscheiben 18, 19 zur Aufnahme eines Riemens 20 des Riementriebs 15 angeordnet. Die Riemenscheiben 18, 19 übertragen die Bewegungen des Riemens 20 von der einen Welle 16 auf die andere Welle 17 und haben unterschiedliche Durchmesser. Die Riemenscheibe 18 für die Welle 16 der Klappe 10 im Ansaugkanal 4 ist einstückig mit dem letzten angetriebenen Zahnrad 13' der Antriebseinrichtung 8 gefertigt. Bei dem Riementrieb 15 kann es sich um einen Zahnriementrieb handeln. Der elektromotorische Stellantrieb 9 ist auf der dem Abgaskanal 5 abgewandten Seite des Ansaugkanals 4 und des Sammelkanals 7 angeordnet. The drive device 8 has a gear 12 with gears 13, 13 'and a coupling device 14 for coupling the movements of the flaps 10, 11. The coupling device 14 has a belt drive 15. On the flaps 10, 11 retaining shafts 16, 17 are pulleys 18, 19 arranged to receive a belt 20 of the belt drive 15. The pulleys 18, 19 transmit the movements of the belt 20 from one shaft 16 to the other Wave 17 and have different diameters. The pulley 18 for the shaft 16 of the flap 10 in the intake passage 4 is made in one piece with the last driven gear 13 'of the drive device 8. The belt drive 15 may be a toothed belt drive. The electromotive actuator 9 is arranged on the side facing away from the exhaust passage 5 of the intake passage 4 and the collecting channel 7.
In einer alternativen, nicht dargestellten Ausführungsform kann der elektromotorische Stellantrieb 9 beispielsweise ausIn an alternative, not shown embodiment, the electromotive actuator 9, for example
Platzgründen auch im Eckbereich zwischen Abgaskanal 5 und Ansaugkanal 4 oder Sammelkanal 7 angeordnet sein. Space reasons also be arranged in the corner between the exhaust duct 5 and intake 4 or collecting duct 7.

Claims

Patentansprüche claims
Mischventil (6) einer Brennkraftmaschine (1) eines Kraftfahrzeuges mit einer in einem Ansaugkanal (4) angeordneten Klappe (10) und einer in einem Abgaskanal (5) angeordneten Klappe (11), wobei der Ansaugkanal (4) und der Abgaskanal (5) in einen gemeinsamen Sammelkanal (7) münden, und mit einer Antriebseinrichtung (8) zum Antrieb der Klappen (10, 11), mit einer Koppeleinrichtung (14) zur Koppelung der Bewegungen der Klappen (10, 11), d a d u r c h g e k e n n z e i c h n e t , dass die Antriebseinrichtung (8) einen Riementrieb (15) mit einem Riemen (20) aufweist, wobei die Klappen (10, 11) mit Riemenscheiben (18, 19) verbunden sind und die Riemenscheiben (18, 19) den Riemen (20) halten. Mixing valve (6) of an internal combustion engine (1) of a motor vehicle with a flap (10) arranged in an intake duct (4) and a flap (11) arranged in an exhaust duct (5), wherein the intake duct (4) and the exhaust duct (5) in a common collecting channel (7) open, and with a drive device (8) for driving the flaps (10, 11), with a coupling device (14) for coupling the movements of the flaps (10, 11), characterized in that the drive means ( 8) has a belt drive (15) with a belt (20), the flaps (10, 11) being connected to pulleys (18, 19) and the pulleys (18, 19) holding the belt (20).
2. Mischventil nach Anspruch 1, d a du r c h g e k e n n z e i c h n e t , dass die Antriebseinrichtung (8) ein Getriebe (12) hat und dass der Riementrieb (15) in der letzten Getriebestufe angeordnet ist. The mixing valve according to claim 1, wherein a drive device (8) has a transmission (12) and that the belt drive (15) is arranged in the last gear stage.
Mischventil nach Anspruch 1 oder 2, d a du r c h g e k e n n z e i c h n e t , dass der Riementrieb (15) einen Zahnriemen hat . A mixing valve according to claim 1 or 2, wherein a belt drive (15) has a toothed belt.
Mischventil nach einem der Ansprüche 1 bis 3, d a d u r c h g e k e n n z e i c h n e t , dass Wellen (16, 17) , auf denen die Klappen (10, 11) befestigt sind, die Riemenscheiben (18, 19) des Riementriebs (15) halten. Mixing valve according to one of claims 1 to 3, characterized in that shafts (16, 17) on which the flaps (10, 11) are mounted, the pulleys (18, 19) of the belt drive (15) hold.
Mischventil nach einem der Ansprüche 1 bis 4, d a d u r c h g e k e n n z e i c h n e t , dass eines der Riemenscheiben (18, 19) einstückig mit einem Zahnrad (13y) der Antriebseinrichtung (8) gefertigt ist. Mischventil nach einem der Ansprüche 1 bis 5, d a d u r c h g e k e n n z e i c h n e t , dass die Riemenscheiben (18, 19) unterschiedliche Durchmesser aufweisen. Mixing valve according to one of claims 1 to 4, characterized in that one of the pulleys (18, 19) is made in one piece with a gear (13 y ) of the drive means (8). Mixing valve according to one of claims 1 to 5, characterized in that the pulleys (18, 19) have different diameters.
Mischventil nach einem der Ansprüche 1 bis 6, d a d u r c h g e k e n n z e i c h n e t , dass auf der Welle (16) der im Ansaugkanal (4) angeordneten Klappe (10) eine größere Riemenscheibe (18) angeordnet ist, als auf der Welle (17) der im Abgaskanal (5) angeordneten Klappe (11) . Mixing valve according to one of claims 1 to 6, characterized in that on the shaft (16) in the intake passage (4) arranged flap (10) a larger pulley (18) is arranged, as on the shaft (17) in the exhaust passage (5 ) arranged flap (11).
PCT/EP2013/057668 2012-04-27 2013-04-12 Mixing valve of an internal combustion engine WO2013160125A1 (en)

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DE102012207122A DE102012207122A1 (en) 2012-04-27 2012-04-27 Mixing valve of an internal combustion engine
DE102012207122.9 2012-04-27

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050028796A1 (en) * 2003-08-07 2005-02-10 Mack Trucks, Inc. Cooler bypass valve system and method
WO2006076938A1 (en) * 2005-01-18 2006-07-27 Bayerische Motoren Werke Aktiengesellschaft Vehicle comprising an exhaust gas recirculation system
FR2926114A1 (en) * 2008-01-03 2009-07-10 Valeo Sys Controle Moteur Sas EGR LOOP OF AN INTERNAL COMBUSTION ENGINE OF A MOTOR VEHICLE

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
LU90480B1 (en) * 1999-11-29 2001-05-30 Delphi Tech Inc Exhaust gas re-circulation device for an internal combustion engine
JP4935866B2 (en) * 2009-07-31 2012-05-23 株式会社デンソー Low pressure EGR device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050028796A1 (en) * 2003-08-07 2005-02-10 Mack Trucks, Inc. Cooler bypass valve system and method
WO2006076938A1 (en) * 2005-01-18 2006-07-27 Bayerische Motoren Werke Aktiengesellschaft Vehicle comprising an exhaust gas recirculation system
FR2926114A1 (en) * 2008-01-03 2009-07-10 Valeo Sys Controle Moteur Sas EGR LOOP OF AN INTERNAL COMBUSTION ENGINE OF A MOTOR VEHICLE

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