EP2653709A1 - Mixing valve of a combustion engine of a motor vehicle - Google Patents

Mixing valve of a combustion engine of a motor vehicle Download PDF

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Publication number
EP2653709A1
EP2653709A1 EP12464005.3A EP12464005A EP2653709A1 EP 2653709 A1 EP2653709 A1 EP 2653709A1 EP 12464005 A EP12464005 A EP 12464005A EP 2653709 A1 EP2653709 A1 EP 2653709A1
Authority
EP
European Patent Office
Prior art keywords
mixing valve
flaps
drive
valve according
shafts
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP12464005.3A
Other languages
German (de)
French (fr)
Inventor
Daniel Losif Maxim
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.)
Continental Automotive GmbH
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
Priority to EP12464005.3A priority Critical patent/EP2653709A1/en
Priority to US14/395,382 priority patent/US9869280B2/en
Priority to PCT/EP2013/057537 priority patent/WO2013156373A1/en
Priority to CN201380019981.8A priority patent/CN104246199B/en
Publication of EP2653709A1 publication Critical patent/EP2653709A1/en
Withdrawn legal-status Critical Current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
    • F02M26/51—EGR valves combined with other devices, e.g. with intake valves or compressors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
    • F02D9/08—Throttle valves specially adapted therefor; Arrangements of such valves in conduits
    • F02D9/10—Throttle valves specially adapted therefor; Arrangements of such valves in conduits having pivotally-mounted flaps
    • F02D9/1065—Mechanical control linkage between an actuator and the flap, e.g. including levers, gears, springs, clutches, limit stops of the like
    • 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
    • F02M26/53—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
    • F02M26/64—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
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
    • F02D9/02—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits concerning induction conduits
    • F02D2009/0201—Arrangements; Control features; Details thereof
    • F02D2009/0276—Throttle and EGR-valve operated together
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/0002—Controlling intake air
    • F02D2041/0017—Controlling intake air by simultaneous control of throttle and exhaust gas recirculation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/0025—Controlling engines characterised by use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
    • F02D41/0047—Controlling exhaust gas recirculation [EGR]
    • F02D41/0077—Control of the EGR valve or actuator, e.g. duty cycle, closed loop control of position
    • 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 valve disposed in an exhaust passage flap, with rotatable, the valves holding waves, the intake passage and the exhaust passage into a common collection channel, and with a drive means for driving 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 flap of the intake passage and the flap of the exhaust passage are controlled such that the flap of the exhaust passage opens from the first position linearly with a drive signal of the drive means.
  • the flap of the intake passage initially remains in the first position and is closed only above a designated drive signal.
  • the flap of the exhaust passage remains in the open position.
  • the invention is based on the problem to design a mixing valve of the type mentioned so that it has a very small space.
  • the flaps can be particularly close to each other order.
  • the position of the driver is determined how the flaps are controlled in response to the movement of the drive pinion. Since the drivers of the control discs and the drive pinion can be freely positioned, almost any movement can be generated with a single drive. As a result, the space of the mixing valve according to the invention is kept particularly low.
  • the control discs and the drive pinions are sandwiched over one another, which contributes to the compact construction of the mixing valve.
  • the pivotal movement of the flaps can be easily limited according to another advantageous embodiment of the invention, when a shaft bearing housing has stops for supporting the arranged on the control discs driver.
  • a movement of the flaps in both directions can be according to another advantageous embodiment of the invention easily avoided if at least one of the control discs is biased by a spring element in the basic position. In conjunction with the coupling of the drive pinion via the intermediate gear, it is sufficient if only one of the control discs is biased in the normal position.
  • the drive pinions are formed as part gears with a exclusively over 180 ° extending sprocket.
  • FIG. 1 schematically shows an internal combustion engine 1 with an intake passage 2 and with an exhaust pipe 3.
  • the intake passage 2 has an intake passage 4, is sucked through the air from the environment.
  • 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 electric servomotor 9 allows an adjustment of the mixing valve. 6
  • FIG. 2 shows a sectional view of the mixing valve 6 FIG. 1 ,
  • the intake passage 4 and in the exhaust passage 5 are each a flap 10, 11 mounted on pivotal shafts 12, 13.
  • the exhaust passage 5 is arranged at right angles to the intake passage 4.
  • the servomotor 9 of the drive device 8 is arranged in the corner region between the intake duct 4 and the exhaust duct 5.
  • the shafts 12, 13 and thus also the flaps 10, 11 are driven.
  • the Figure 3a and 3b show from two perspectives the mixing valve 6 in a plan view of the drive means 8.
  • the mixing valve 6 has an open housing 14 shown with a plane open towards the recess 15 for receiving the servomotor 9.
  • On the shafts 12, 13 are respectively control discs 16, 17th arranged rotationally fixed and drive pinion 18, 19 rotatably mounted.
  • the drive pinions 18, 19 are connected to a common pinion 21 in engagement.
  • the servomotor 9 drives an intermediate gear 20 connected to the pinion 21.
  • the drive pinions 18, 19 have on their the control discs 16, 17 facing sides in each case a driver 22, 23, with which they protrude into a range of movement of a arranged on the control discs 16, 17 driver 24, 25.
  • Spring elements 30, 31 bias the control discs 16, 17 in a basic position in which the intake passage 4 is opened and the exhaust passage 5 is closed.
  • FIG. 4 shows for clarity the individual components of the drive device in an exploded view.
  • the flaps 10, 11 are fastened to the shafts 12, 13 by means of screws 33, 33 '.
  • the shafts 12, 13 have bushings 34, 34 'for mounting in the housing 14.
  • a cover 37 closes in the mounted state, the housing 14.
  • the arranged on the shaft 12 of the flap 10 of the output channel 4 driver 24 is connected via a further spring element 36 with the drive pinion 18 is connected.
  • a second, mounted on this shaft 12 driver 38 acts with in FIG. 5 shown stops 26, 27 of the housing together.
  • a structural unit of intermediate gear 20 and pinion 21 is rotatably mounted on a bearing shaft 39 fixed in the housing 14.
  • FIG. 5 shows a plan view of the housing 14. It can be seen that the housing 14 stops 26-29 for support of the drivers 24, 25 of the control discs 16, 17 has.
  • the housing 14 has, in addition to the stops 28, 29 for supporting the driver 25 of the control disk 17 of the flap 11 of the exhaust passage 5, a recess 32 for supporting the spring element 31st

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanically-Actuated Valves (AREA)
  • Electrically Driven Valve-Operating Means (AREA)
  • Lift Valve (AREA)
  • Multiple-Way Valves (AREA)
  • Exhaust-Gas Circulating Devices (AREA)
  • Valve Device For Special Equipments (AREA)

Abstract

The valve has two flaps arranged in a suction passage and an exhaust gas passage, respectively. Two shafts hold the flaps, respectively. The suction- and gas passages open into a common collecting duct (7). A drive device drives the flaps and comprises control disks (17) that are located on the shafts in a torque-proof manner, and drive pinions that are rotatably arranged on the shafts. The disks and the pinions comprise drivers (22-25) that correspond to each other. The pinions engage with a common pinion, and the disks are pre-tensioned in a normal position by a spring element (31). The spring element is designed as a spring clip.

Description

Die Erfindung betrifft ein Mischventil einer Brennkraftmaschine eines Kraftfahrzeuges mit einer in einem Ansaugkanal angeordneten Klappe und einer in einem Abgaskanal angeordneten Klappe, mit drehbaren, die Klappen haltenden Wellen, wobei der Ansaugkanal und der Abgaskanal in einen gemeinsamen Sammelkanal münden, und mit einer Antriebseinrichtung zum Antrieb 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 valve disposed in an exhaust passage flap, with rotatable, the valves holding waves, the intake passage and the exhaust passage into a common collection channel, and with a drive means for driving the flaps.

Solche Mischventile werden bei Abgasrückführungssystemen von Brennkraftmaschinen heutiger Kraftfahrzeuge häufig eingesetzt und sind aus der Praxis bekannt. Die Bewegungen der Klappe des Ansaugkanals und der Klappe des Abgaskanals sind derart gesteuert, dass die Klappe des Abgaskanals ausgehend von der ersten Stellung linear mit einem Ansteuersignal der Antriebseinrichtung öffnet. Die Klappe des Ansaugkanals verharrt jedoch zunächst in der ersten Stellung und wird erst oberhalb eines vorgesehenen Ansteuersignals geschlossen. Während der Schließbewegung der Klappe des Ansaugkanals verbleibt die Klappe des Abgaskanals in der geöffneten Stellung.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 flap of the intake passage and the flap of the exhaust passage are controlled such that the flap of the exhaust passage opens from the first position linearly with a drive signal of the drive means. However, the flap of the intake passage initially remains in the first position and is closed only above a designated drive signal. During the closing movement of the flap of the intake passage, the flap of the exhaust passage remains in the open position.

Bei heutigen Kraftfahrzeugen besteht jedoch das Bedürfnis, dass das Mischventil besonders wenig Bauraum beansprucht.In today's motor vehicles, however, there is a need that the mixing valve takes up very little space.

Der Erfindung liegt das Problem zugrunde, ein Mischventil der eingangs genannten Art so zu gestalten, dass es einen besonders kleinen Bauraum aufweist.The invention is based on the problem to design a mixing valve of the type mentioned so that it has a very small space.

Dieses Problem wird erfindungsgemäß dadurch gelöst, dass die Antriebseinrichtung auf den Wellen der Klappen drehfest angeordnete Steuerscheiben und auf den Wellen der Klappen drehbar gelagerte und angetriebene Antriebsritzel aufweist, und dass die Steuerscheiben und die Antriebsritzel miteinander korrespondierende Mitnehmer aufweisen.This problem is inventively solved in that the drive means on the shafts of the flaps rotatably mounted control discs and on the shafts of the flaps rotatably mounted and driven drive pinion, and that the control discs and the drive pinion having mutually corresponding driver.

Durch diese Gestaltung lassen sich die Klappen besonders eng nahe beieinander anordnen. Durch die Position der Mitnehmer wird festgelegt, wie die Klappen in Abhängigkeit von der Bewegung der Antriebsritzel angesteuert werden. Da sich die Mitnehmer der Steuerscheiben und der Antriebsritzel frei positionieren lassen, können mit einem einzigen Antrieb nahezu beliebige Bewegungsabläufe erzeugt werden. Hierdurch wird der Bauraum des erfindungsgemäßen Mischventils besonders gering gehalten. Vorzugsweise sind die Steuerscheiben und die Antriebsritzel sandwichartig übereinander angeordnet, was zu dem kompakten Aufbau des Mischventils beiträgt.By this design, the flaps can be particularly close to each other order. By the position of the driver is determined how the flaps are controlled in response to the movement of the drive pinion. Since the drivers of the control discs and the drive pinion can be freely positioned, almost any movement can be generated with a single drive. As a result, the space of the mixing valve according to the invention is kept particularly low. Preferably, the control discs and the drive pinions are sandwiched over one another, which contributes to the compact construction of the mixing valve.

Die Schwenkbewegung der Klappen lässt sich gemäß einer anderen vorteilhaften Weiterbildung der Erfindung einfach begrenzen, wenn ein die Wellen lagerndes Gehäuse Anschläge zur Abstützung der auf den Steuerscheiben angeordneten Mitnehmer hat.The pivotal movement of the flaps can be easily limited according to another advantageous embodiment of the invention, when a shaft bearing housing has stops for supporting the arranged on the control discs driver.

Der bauliche Aufwand zum Antrieb der Antriebsritzel lässt sich gemäß einer anderen vorteilhaften Weiterbildung der Erfindung besonders gering halten, wenn die beiden Antriebsritzel mit einem gemeinsamen Zwischenzahnrad in Eingriff stehen. Durch diese Gestaltung sind die beiden Antriebsritzel miteinander gekoppelt. Daher genügt zum Antrieb der Klappen des erfindungsgemäßen Mischventils ein einziger Stellmotor.The structural complexity for driving the drive pinion can be kept particularly low according to another advantageous embodiment of the invention, when the two drive pinion are in engagement with a common intermediate gear. By this design, the two drive pinions are coupled together. Therefore, a single servomotor is sufficient to drive the valves of the mixing valve according to the invention.

Eine Bewegung der Klappen in beide Richtungen lässt sich gemäß einer anderen vorteilhaften Weiterbildung der Erfindung einfach vermeiden, wenn zumindest eine der Steuerscheiben von einem Federelement in die Grundstellung vorgespannt ist. In Verbindung mit der Koppelung der Antriebsritzel über das Zwischenzahnrad reicht es, wenn nur eine einzige der Steuerscheiben in die Grundstellung vorgespannt ist.A movement of the flaps in both directions can be according to another advantageous embodiment of the invention easily avoided if at least one of the control discs is biased by a spring element in the basic position. In conjunction with the coupling of the drive pinion via the intermediate gear, it is sufficient if only one of the control discs is biased in the normal position.

Zur weiteren Verringerung des baulichen Aufwandes des Mischventils trägt es gemäß einer anderen vorteilhaften Weiterbildung der Erfindung bei, wenn das Federelement als Schenkelfeder ausgebildet ist und in einer neben den Anschlägen angeordneten Ausnehmung des Gehäuses abgestützt ist.To further reduce the structural complexity of the mixing valve, it contributes according to another advantageous embodiment of the invention, when the spring element as a leg spring is formed and is supported in a arranged adjacent to the stops recess of the housing.

Die Antriebseinrichtung gestaltet sich gemäß einer anderen vorteilhaften Weiterbildung der Erfindung besonders kompakt, wenn der Abgaskanal und der Ansaugkanal rechtwinklig zueinander angeordnet sind und wenn ein einziger Stellmotor der Antriebseinrichtung im Eckbereich des Abgaskanals und des Ansaugkanals angeordnet ist.The drive device is particularly compact according to another advantageous embodiment of the invention, when the exhaust passage and the intake passage are arranged at right angles to each other and when a single actuator motor of the drive means is arranged in the corner region of the exhaust passage and the intake passage.

Die Montage des Stellmotors gestaltet sich gemäß einer anderen vorteilhaften Weiterbildung der Erfindung besonders einfach, wenn das Gehäuse eine von der Seite der Anschläge her zugängliche Ausnehmung für den Stellmotor hat. Durch diese Gestaltung sind die Steuerscheiben, das Federelement und die Antriebsritzel zusammen mit dem einzigen Stellmotor von einer Seite her zugänglich. Daher lässt sich das erfindungsgemäße Mischventil besonders kostengünstig in einer Großserie fertigen.The assembly of the servomotor designed according to another advantageous embodiment of the invention is particularly simple if the housing has an accessible from the side of the attacks forth recess for the servomotor. By this design, the control discs, the spring element and the drive pinion are accessible together with the single servomotor from one side. Therefore, the mixing valve according to the invention can be manufactured particularly cost-effectively in a mass production.

Zur weiteren Verringerung der Abmessungen des Mischventils trägt es gemäß einer anderen vorteilhaften Weiterbildung der Erfindung bei, wenn die Antriebsritzel als Teilzahnräder mit einem sich ausschließlich über 180° erstreckenden Zahnkranz ausgebildet sind.To further reduce the dimensions of the mixing valve, it contributes according to another advantageous embodiment of the invention, when the drive pinions are formed as part gears with a exclusively over 180 ° extending sprocket.

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:

Fig. 1
schematisch eine Brennkraftmaschine mit einem erfindungsgemäßen Mischventil,
Fig. 2
einen Querschnitt durch das Mischventil aus Figur 1,
Fig. 3a/3b
das Mischventil in zwei perspektivischen Ansichten auf eine Antriebseinrichtung,
Fig. 4
die einzelnen Bauteile des Mischventils in einer Explosionsdarstellung,
Fig. 5
eine Draufsicht auf ein Gehäuse des Mischventils.
The invention allows numerous embodiments. To further clarify its basic principle, one of them is shown in the drawing and will be described below. This shows in:
Fig. 1
schematically an internal combustion engine with a mixing valve according to the invention,
Fig. 2
a cross section through the mixing valve FIG. 1 .
Fig. 3a / 3b
the mixing valve in two perspective views of a drive device,
Fig. 4
the individual components of the mixing valve in an exploded view,
Fig. 5
a plan view of a housing of the mixing valve.

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 elektrischen Stellmotor 9 ermöglicht eine Verstellung des Mischventils 6. FIG. 1 schematically shows an internal combustion engine 1 with an intake passage 2 and with an exhaust pipe 3. The intake passage 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 electric servomotor 9 allows an adjustment of the mixing valve. 6

Figur 2 zeigt eine Schnittdarstellung des Mischventils 6 aus Figur 1. In dem Ansaugkanal 4 und in dem Abgaskanal 5 ist jeweils eine Klappe 10, 11 auf schwenkbaren Wellen 12, 13 befestigt. Der Abgaskanal 5 ist rechtwinklig zu dem Ansaugkanal 4 angeordnet. Im Eckbereich zwischen Ansaugkanal 4 und Abgaskanal 5 ist der Stellmotor 9 der Antriebseinrichtung 8 angeordnet. Über den Stellmotor 9 werden die Wellen 12, 13 und damit auch die Klappen 10, 11 angetrieben. FIG. 2 shows a sectional view of the mixing valve 6 FIG. 1 , In the intake passage 4 and in the exhaust passage 5 are each a flap 10, 11 mounted on pivotal shafts 12, 13. The exhaust passage 5 is arranged at right angles to the intake passage 4. In the corner region between the intake duct 4 and the exhaust duct 5, the servomotor 9 of the drive device 8 is arranged. About the servo motor 9, the shafts 12, 13 and thus also the flaps 10, 11 are driven.

Die Figur 3a und 3b zeigen aus zwei Perspektiven das Mischventil 6 in einer Draufsicht auf die Antriebseinrichtung 8. Das Mischventil 6 hat ein geöffnet dargestelltes Gehäuse 14 mit einer zur Zeichenebene hin offenen Ausnehmung 15 zur Aufnahme des Stellmotors 9. Auf den Wellen 12, 13 sind jeweils Steuerscheiben 16, 17 drehfest angeordnet und Antriebsritzel 18, 19 drehbar gelagert. Die Antriebsritzel 18, 19 stehen mit einem gemeinsamen Ritzel 21 im Eingriff. Der Stellmotor 9 treibt ein mit dem Ritzel 21verbundenes Zwischenzahnrad 20 an. Die Antriebsritzel 18, 19 weisen auf ihrer den Steuerscheiben 16, 17 zugewandten Seiten jeweils einen Mitnehmer 22, 23 auf, mit dem sie in einen Bewegungsbereich eines auf den Steuerscheiben 16, 17 angeordneten Mitnehmers 24, 25 hineinragen. Federelemente 30, 31 spannen die Steuerscheiben 16, 17 in eine Grundstellung vor, in der der Ansaugkanal 4 geöffnet und der Abgaskanal 5 geschlossen ist.The Figure 3a and 3b show from two perspectives the mixing valve 6 in a plan view of the drive means 8. The mixing valve 6 has an open housing 14 shown with a plane open towards the recess 15 for receiving the servomotor 9. On the shafts 12, 13 are respectively control discs 16, 17th arranged rotationally fixed and drive pinion 18, 19 rotatably mounted. The drive pinions 18, 19 are connected to a common pinion 21 in engagement. The servomotor 9 drives an intermediate gear 20 connected to the pinion 21. The drive pinions 18, 19 have on their the control discs 16, 17 facing sides in each case a driver 22, 23, with which they protrude into a range of movement of a arranged on the control discs 16, 17 driver 24, 25. Spring elements 30, 31 bias the control discs 16, 17 in a basic position in which the intake passage 4 is opened and the exhaust passage 5 is closed.

Figur 4 zeigt zur Verdeutlichung die einzelnen Bauteile der Antriebseinrichtung in einer Explosionsdarstellung. Die Klappen 10, 11 sind mittels Schrauben 33, 33' an den Wellen 12, 13 befestigt. Die Wellen 12, 13 haben Lagerbuchsen 34, 34' zur Lagerung in dem Gehäuse 14. Ein Deckel 37 verschließt im montierten Zustand das Gehäuse 14. Der auf der Welle 12 der Klappe 10 des Ausgangskanals 4 angeordnete Mitnehmer 24 ist über ein weiteres Federelement 36 mit dem Antriebsritzel 18 verbunden. Ein zweiter, auf dieser Welle 12 befestigter Mitnehmer 38 wirkt mit in Figur 5 dargestellten Anschlägen 26, 27 des Gehäuses zusammen. Eine bauliche Einheit aus Zwischenzahnrad 20 und Ritzel 21 ist drehbar auf einer im Gehäuse 14 befestigten Lagerachse 39 angeordnet. FIG. 4 shows for clarity the individual components of the drive device in an exploded view. The flaps 10, 11 are fastened to the shafts 12, 13 by means of screws 33, 33 '. The shafts 12, 13 have bushings 34, 34 'for mounting in the housing 14. A cover 37 closes in the mounted state, the housing 14. The arranged on the shaft 12 of the flap 10 of the output channel 4 driver 24 is connected via a further spring element 36 with the drive pinion 18 is connected. A second, mounted on this shaft 12 driver 38 acts with in FIG. 5 shown stops 26, 27 of the housing together. A structural unit of intermediate gear 20 and pinion 21 is rotatably mounted on a bearing shaft 39 fixed in the housing 14.

Figur 5 zeigt eine Draufsicht auf das Gehäuse 14. Hierbei ist zu erkennen, dass das Gehäuse 14 Anschläge 26 - 29 zur Abstützung von den Mitnehmern 24, 25 der Steuerscheiben 16, 17 hat. Das Gehäuse 14 hat neben den Anschlägen 28, 29 zur Abstützung des Mitnehmers 25 der Steuerscheibe 17 der Klappe 11 des Abgaskanals 5 eine Ausnehmung 32 zur Abstützung vom Federelement 31. FIG. 5 shows a plan view of the housing 14. It can be seen that the housing 14 stops 26-29 for support of the drivers 24, 25 of the control discs 16, 17 has. The housing 14 has, in addition to the stops 28, 29 for supporting the driver 25 of the control disk 17 of the flap 11 of the exhaust passage 5, a recess 32 for supporting the spring element 31st

Durch Antrieb der Antriebseinrichtung 8 mittels des Stellmotors 9 werden die beiden Antriebsritzel 18, 19 angetrieben. Dabei nimmt zuerst das Antriebsritzel 19 die auf der Klappe 11 des Abgaskanals 5 befestigte Steuerscheibe 17 mit, bis die Klappe 11 des Abgaskanals 5 in die vollständig geöffnete Stellung bewegt ist. Dabei gelangt der Mitnehmer 22 des anderen Antriebsritzels 18 gegen den Mitnehmer 24 der Steuerscheibe 16 der in dem Ansaugkanal 4 angeordneten Klappe 10. Bei einem weiteren Antrieb der Antriebseinrichtung 8 wird die Klappe 10 im Ansaugkanal 4 geschlossen.By driving the drive means 8 by means of the servo motor 9, the two drive pinions 18, 19 are driven. In this case, first takes the drive pinion 19 with the attached to the flap 11 of the exhaust passage 5 control disk 17, until the flap 11 of the exhaust passage 5 is moved to the fully open position. In this case, the driver 22 of the other passes Drive pinion 18 against the driver 24 of the control disk 16 of the arranged in the intake port 4 flap 10. In a further drive of the drive device 8, the flap 10 is closed in the intake passage 4.

Claims (8)

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), mit drehbaren, die Klappen (10, 11) haltenden Wellen (12, 13), 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), dadurch gekennzeichnet, dass die Antriebseinrichtung (8) auf den Wellen (12, 13) der Klappen (10, 11) drehfest angeordnete Steuerscheiben (16, 17) und auf den Wellen (12, 13) der Klappen (10, 11) drehbar gelagerte und angetriebene Antriebsritzel (18, 19) aufweist, und dass die Steuerscheiben (16, 17) und die Antriebsritzel (18, 19) miteinander korrespondierende Mitnehmer (22 - 25) aufweisen.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) with rotatable shafts holding the flaps (10, 11) (12, 13), wherein the intake passage (4) and the exhaust passage (5) in a common collecting channel (7) open, and with a drive means (8) for driving the flaps (10, 11), characterized in that the drive means (8) on the shafts (12, 13) of the flaps (10, 11) rotatably mounted control discs (16, 17) and on the shafts (12, 13) of the flaps (10, 11) rotatably mounted and driven drive pinion (18, 19), and in that the control disks (16, 17) and the drive pinions (18, 19) have mutually corresponding drivers (22-25). Mischventil nach Anspruch 1, dadurch gekennzeichnet, dass ein die Wellen (12, 13) lagerndes Gehäuse (14) Anschläge (26 - 29) zur Abstützung der auf den Steuerscheiben (16, 17) angeordneten Mitnehmer (24, 25) hat.Mixing valve according to Claim 1, characterized in that a housing (14) supporting the shafts (12, 13) has stops (26-29) for supporting the drivers (24, 25) arranged on the control disks (16, 17). Mischventil nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die beiden Antriebsritzel (18, 19) mit einem gemeinsamen Ritzel (21) in Eingriff stehen.Mixing valve according to claim 1 or 2, characterized in that the two drive pinions (18, 19) are in engagement with a common pinion (21). Mischventil nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet dass zumindest eine der Steuerscheiben (16, 17) von einem Federelement (30, 31) in die Grundstellung vorgespannt ist.Mixing valve according to one of claims 1 to 3, characterized in that at least one of the control discs (16, 17) is biased by a spring element (30, 31) in the basic position. Mischventil nach Anspruch 4, dadurch gekennzeichnet, dass das Federelement (31) in einer neben den Anschlägen (28, 29) angeordneten Ausnehmung (32) des Gehäuses (14) abgestützt ist.Mixing valve according to claim 4, characterized in that the spring element (31) in one adjacent to the stops (28, 29) arranged recess (32) of the housing (14) is supported. Mischventil nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass der Abgaskanal (5) und der Ansaugkanal (4) rechtwinklig zueinander angeordnet sind und dass ein einziger Stellmotor (9) der Antriebseinrichtung (8) im Eckbereich des Abgaskanals (5) und des Ansaugkanals (4) angeordnet ist.Mixing valve according to one of claims 1 to 5, characterized in that the exhaust duct (5) and the intake duct (4) are arranged at right angles to each other and that a single actuator (9) of the drive means (8) in the corner region of the exhaust passage (5) and the Intake duct (4) is arranged. Mischventil nach Anspruch 2 und 6, dadurch gekennzeichnet, dass das Gehäuse (14) eine von der Seite der Anschläge (26 - 29) her zugängliche Ausnehmung (15) für den Stellmotor (9) hat.Mixing valve according to claim 2 and 6, characterized in that the housing (14) from the side of the stops (26 - 29) ago accessible recess (15) for the servomotor (9) has. Mischventil nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass die Antriebsritzel (18, 19) als Teilzahnräder mit einem sich ausschließlich über 180° erstreckenden Zahnkranz ausgebildet sind.Mixing valve according to one of claims 1 to 7, characterized in that the drive pinions (18, 19) are formed as part gears with a exclusively over 180 ° extending sprocket.
EP12464005.3A 2012-04-18 2012-04-18 Mixing valve of a combustion engine of a motor vehicle Withdrawn EP2653709A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP12464005.3A EP2653709A1 (en) 2012-04-18 2012-04-18 Mixing valve of a combustion engine of a motor vehicle
US14/395,382 US9869280B2 (en) 2012-04-18 2013-04-11 Mixer valve of an internal combustion engine of a motor vehicle
PCT/EP2013/057537 WO2013156373A1 (en) 2012-04-18 2013-04-11 Mixer valve of an internal combustion engine of a motor vehicle
CN201380019981.8A CN104246199B (en) 2012-04-18 2013-04-11 The mixing valve of the internal combustion engine of motor vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP12464005.3A EP2653709A1 (en) 2012-04-18 2012-04-18 Mixing valve of a combustion engine of a motor vehicle

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EP2653709A1 true EP2653709A1 (en) 2013-10-23

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EP12464005.3A Withdrawn EP2653709A1 (en) 2012-04-18 2012-04-18 Mixing valve of a combustion engine of a motor vehicle

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US (1) US9869280B2 (en)
EP (1) EP2653709A1 (en)
CN (1) CN104246199B (en)
WO (1) WO2013156373A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2623765B1 (en) * 2012-02-01 2015-04-08 Continental Automotive GmbH Exhaust gas control device for a combustion engine
US10041420B2 (en) 2016-08-31 2018-08-07 Borgwarner Inc. Valve assembly and valve system including same
EP3628834B1 (en) * 2018-09-28 2021-11-03 Winterthur Gas & Diesel Ltd. Valve for an exhaust housing and exhaust housing of a large ship

Citations (4)

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Publication number Priority date Publication date Assignee Title
FR2926114A1 (en) * 2008-01-03 2009-07-10 Valeo Sys Controle Moteur Sas EGR LOOP OF AN INTERNAL COMBUSTION ENGINE OF A MOTOR VEHICLE
FR2954408A1 (en) * 2009-12-22 2011-06-24 Valeo Sys Controle Moteur Sas METHOD FOR CONTROLLING AN EGR CIRCUIT OF A MOTOR VEHICLE ENGINE
FR2954407A1 (en) * 2009-12-22 2011-06-24 Valeo Sys Controle Moteur Sas METHOD FOR CONTROLLING AN EGR CIRCUIT OF A MOTOR VEHICLE MOTOR, VALVE FOR IMPLEMENTING THE METHOD AND ENGINE WITH THE VALVE.
US20120056118A1 (en) * 2009-08-24 2012-03-08 Masayuki Yokoyama Valve opening and closing mechanism

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2926114A1 (en) * 2008-01-03 2009-07-10 Valeo Sys Controle Moteur Sas EGR LOOP OF AN INTERNAL COMBUSTION ENGINE OF A MOTOR VEHICLE
US20120056118A1 (en) * 2009-08-24 2012-03-08 Masayuki Yokoyama Valve opening and closing mechanism
FR2954408A1 (en) * 2009-12-22 2011-06-24 Valeo Sys Controle Moteur Sas METHOD FOR CONTROLLING AN EGR CIRCUIT OF A MOTOR VEHICLE ENGINE
FR2954407A1 (en) * 2009-12-22 2011-06-24 Valeo Sys Controle Moteur Sas METHOD FOR CONTROLLING AN EGR CIRCUIT OF A MOTOR VEHICLE MOTOR, VALVE FOR IMPLEMENTING THE METHOD AND ENGINE WITH THE VALVE.

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US20150059717A1 (en) 2015-03-05
CN104246199A (en) 2014-12-24
CN104246199B (en) 2018-01-16
WO2013156373A1 (en) 2013-10-24
US9869280B2 (en) 2018-01-16

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