EP2569529A1 - Device for controlling an exhaust valve of an internal combustion engine - Google Patents

Device for controlling an exhaust valve of an internal combustion engine

Info

Publication number
EP2569529A1
EP2569529A1 EP11719807A EP11719807A EP2569529A1 EP 2569529 A1 EP2569529 A1 EP 2569529A1 EP 11719807 A EP11719807 A EP 11719807A EP 11719807 A EP11719807 A EP 11719807A EP 2569529 A1 EP2569529 A1 EP 2569529A1
Authority
EP
European Patent Office
Prior art keywords
exhaust valve
push rod
lever
actuator
elastic element
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Withdrawn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
EP11719807A
Other languages
German (de)
French (fr)
Inventor
Vinzent Kremina
Michael Noll
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
Publication of EP2569529A1 publication Critical patent/EP2569529A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/52—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
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B37/00—Engines characterised by provision of pumps driven at least for part of the time by exhaust
    • F02B37/12—Control of the pumps
    • F02B37/18—Control of the pumps by bypassing exhaust from the inlet to the outlet of turbine or to the atmosphere
    • F02B37/183—Arrangements of bypass valves or actuators therefor
    • F02B37/186—Arrangements of actuators or linkage for bypass 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
    • F02M26/51—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
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

Definitions

  • the invention relates to a device for controlling an exhaust valve of an internal combustion engine with a controllable actuator, with a drivable by the actuator lever and with a movement of the control lever on the exhaust valve transmitting push rod.
  • Such a device is for example from the
  • DE 10 2008 014 609 AI known Such devices are often used in today's internal combustion engines, for example to switch exhaust gas recirculation valves, for adjusting the stator blades of a turbocharger or for actuating a wastegate valve in a turbocharger.
  • the actuator has for its control, for example, an electric motor or a pneumatic actuator.
  • the lever is driven by a gear in the known device.
  • an elastic element is arranged, which compensates for load peaks.
  • the push rod allows a spatially ⁇ separated arrangement of the exhaust valve of the actuator.
  • the invention is based on the problem to form a device of the type mentioned so on that it has ei ⁇ nen particularly low energy consumption.
  • This problem is inventively achieved in that are supported laterally on a stop in one of the end positions of the exhaust valve, the adjusting lever or the push rod.
  • levers and push rod have a detent position in which they are held on the stop. Therefore, the exhaust valve is held passively in the one end position of the stop.
  • the actuator requires no energy when the exhaust valve is held at least in one end position.
  • the energy required to operate the device according to the invention energy consumption is particularly low. Since the adjusting lever is usually shorter and thus more rigid than the push rod, the adjusting lever is preferably supported on the stop.
  • the structural complexity for controlling the exhaust valve can be kept particularly low according to another advantageous embodiment of the invention, when the push rod with the lever forms a crank mechanism and if in a dead center of the crank mechanism, the exhaust valve has the one end position and the lever or the push rod in the case of the drive of the crank mechanism beyond the dead point on the stop is supported. In this position, which is rotated beyond the dead center of the crank mechanism, a force introduced into the push rod by the exhaust valve can not lead to a Verschwen ⁇ ken of the control lever, as the lever and push rod are blocked. Only when the control lever on the Stellan ⁇ drive is swung back over the dead center, the connecting rod can be moved in their longitudinal direction and drive the exhaust valve.
  • the push rod and the lever could be in one end ⁇ position of the exhaust valve in an extended position one behind the other.
  • the exhaust valve can be particularly easily adjusted according to another advantageous embodiment of the invention, when the push rod and the lever are parallel to each other in the one end position of the exhaust valve.
  • the exhaust valve is permanently CLOSED ⁇ sen.
  • the invention avoid a permanent energization of the actuator when the one end position corresponds to the closed position of the exhaust valve.
  • the push rod can be preassembled according to another advantageous embodiment of the invention with the elastic member to a structural unit, when the push rod has an inner member and an inner member telescopically cross-outer member and when the elastic Element is disposed between the inner and the outer member and is supported on shoulders of the inner and outer members.
  • the inventive device is particularly compact set ⁇ builds when the elastic member is a coil spring being formed ⁇ .
  • the device according to the invention is structurally particularly simple if the exhaust valve has a vertically pivotable against an opening of an exhaust gas duct exhaust flap. Thus, the force of the elastic element acts against the pressure in the exhaust passage.
  • Push rod via a ball joint with an actuating arm of the exhaust flap of the exhaust valve is connectable.
  • Fig. 1 shows schematically a device according to the invention for
  • FIG. 2 shows schematically the device according to the invention in
  • Closing the exhaust valve shows schematically the device according to the invention in an end position
  • FIG. 1 schematically shows a device with a crank drive 2 which can be driven by an actuator 1 and an exhaust valve 3 which can be driven via the crank drive 2.
  • the crank drive 2 has a push rod 4 and a control lever 5
  • Push rod 4 an elastic element 6 is arranged.
  • the push rod 4 is connected via a hinge 7 to a control arm 8 of the exhaust valve 3.
  • the actuator arm 8 is moved a vertically pivotable on an opening 9 of an exhaust passage 10 exhaust flap 11.
  • a Ventilkör ⁇ by and the opening 9 of the exhaust passage 10 a valve seat of the exhaust valve 3.
  • the direction of the exhaust passage 10 to the From ⁇ gas flap 11 acting pressure is indicated in the drawing with an arrow and the letter P.
  • the adjusting lever 5 can be pivoted via the actuator 1 between the two positions I and II. In the position I of the control lever 5, the exhaust valve 3 is in the fully open end position. In position II of the control lever 5, the exhaust valve 3 is in the fully closed end position.
  • the arranged in the push rod 4 elastic element 6 is substantially relaxed and compensates in the positions I and II tolerances between the actuator 1 and the exhaust valve 3 from.
  • Figure 2 shows the device of Figure 1 after a drive of the control lever 5 by the actuator 1 against the Uhrzei ⁇ gersinn in a position III.
  • the elastic element 6 is stretched by the amount a.
  • the exhaust valve 3 ver ⁇ remains in its closed end position.
  • the lever 5 and the push rod 4 are parallel in this position one above the other.
  • the position III indicates a dead center of the crank mechanism. 2
  • Figure 3 shows the device of Figures 1 and 2 for a drive of the control lever 5 by the actuator 1 ge ⁇ gen clockwise in the position IV.
  • the lever 5 is located on the side of a stop 12.
  • the elastic ele ⁇ ment 6 is excited only by the amount b.
  • the exhaust valve 3 is thus held by the stop 12 and the elastic member 6 in the closed end position.
  • a pressure acting from the exhaust gas in the exhaust passage 10 on the exhaust valve 11 pressure causes the control lever 5 is further pulled against the impact-on ⁇ 12th From the voltage applied to the stop 12 position IV, the lever 5 can be driven only by means of the actuator 1 out.
  • Figure 4 shows an embodiment of the device of Figures 1 to 3 with the actuator 1 and the crank mechanism 2.
  • the exhaust valve 3 is not shown to simplify the drawing.
  • the actuator 1 has an electric motor 13, wel ⁇ cher is connected via a gear 14 to the crank mechanism 2.
  • the push rod 4 has a respective ball joint 15, 16 for connection to the actuating lever 5 and the example shown in Figure 1 actuator arm 8 of the exhaust valve 3.
  • the push rod 4 has an inner member 17 and an inner Ele ⁇ element 17 cross outer member 18
  • the elements 17, 18 of the push rod 4 are telescopically telescoping and paragraphs 19, 20 for supporting the elastic member 6 on.
  • the elastic element 6 is formed as arranged between the elements 17, 18 of the push rod 4 coil spring.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanically-Actuated Valves (AREA)
  • Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
  • Lift Valve (AREA)

Abstract

The invention relates to a device for controlling an exhaust valve (3), provided with a crank mechanism (2) that can be driven by an actuator (1) and can be moved, when the exhaust valve (3) is in the closed end position, past a dead centre towards an abutment (12). In said position, the crank mechanism (2) is held without using any energy and can only be moved out of this position by the driving of the actuator (1). Forces introduced from the side of the exhaust valve (3) cannot move the crank mechanism (2).

Description

Beschreibung description
Einrichtung zur Ansteuerung eines Abgasventils einer Brennkraftmaschine Device for controlling an exhaust valve of an internal combustion engine
Die Erfindung betrifft eine Einrichtung zur Ansteuerung eines Abgasventils einer Brennkraftmaschine mit einem ansteuerbaren Stellantrieb, mit einem von dem Stellantrieb antreibbaren Stellhebel und mit einer die Bewegung des Stellhebels auf das Abgasventil übertragenden Schubstange. The invention relates to a device for controlling an exhaust valve of an internal combustion engine with a controllable actuator, with a drivable by the actuator lever and with a movement of the control lever on the exhaust valve transmitting push rod.
Eine solche Einrichtung ist beispielsweise aus der Such a device is for example from the
DE 10 2008 014 609 AI bekannt. Solche Einrichtungen werden häufig bei heutigen Brennkraftmaschinen eingesetzt, um bei- spielsweise Abgasrückführventile zu schalten, zum Verstellen der Leiterschaufeln eines Turboladers oder zum Betätigen eines Wastegateventils in einem Turbolader. Der Stellantrieb hat zu seiner Ansteuerung beispielsweise einen Elektromotor oder einen pneumatischen Aktor. Der Stellhebel wird bei der bekannten Einrichtung über ein Getriebe angetrieben. In dem Getriebe ist ein elastisches Element angeordnet, welches Lastspitzen ausgleicht. Die Schubstange ermöglicht eine räum¬ lich getrennte Anordnung des Abgasventils von dem Stellantrieb . DE 10 2008 014 609 AI known. Such devices are often used in today's internal combustion engines, for example to switch exhaust gas recirculation valves, for adjusting the stator blades of a turbocharger or for actuating a wastegate valve in a turbocharger. The actuator has for its control, for example, an electric motor or a pneumatic actuator. The lever is driven by a gear in the known device. In the transmission, an elastic element is arranged, which compensates for load peaks. The push rod allows a spatially ¬ separated arrangement of the exhaust valve of the actuator.
Nachteilig bei der bekannten Einrichtung ist, dass der Stel¬ lantrieb das Abgasventil in seiner vorgesehenen Lage halten muss. Beispielsweise ist es häufig vorgesehen, dass das Ab¬ gasventil in einem Grundzustand entweder geschlossen oder ge- öffnet ist. Damit benötigt der Stellantrieb auch dann Ener¬ gie, wenn das Abgasventil passiv in seinem Grundzustand gehalten werden soll. A disadvantage of the known device that the Stel ¬ lantrieb must hold the exhaust valve in its intended position. For example, it is often provided that the Ab ¬ gas valve is either closed or opened in a ground state. Thus even the actuator requires Ener gy ¬ when the exhaust valve is to be passively held in its ground state.
Der Erfindung liegt das Problem zugrunde, eine Einrichtung der eingangs genannten Art so weiter zu bilden, dass sie ei¬ nen besonders geringen Energiebedarf hat. Dieses Problem wird erfindungsgemäß dadurch gelöst, dass in einer der Endstellungen des Abgasventils der Stellhebel oder die Schubstange seitlich an einem Anschlag abgestützt sind. Durch diese Gestaltung haben Stellhebel und Schubstange eine Raststellung, in der sie an dem Anschlag gehalten sind. Daher wird das Abgasventil in der einen Endstellung passiv von dem Anschlag gehalten. Der Stellantrieb benötigt keine Energie, wenn das Abgasventil zumindest in der einen Endstellung gehalten ist. Damit ist der zum Betrieb der erfindungsgemäßen Einrichtung erforderliche Energiebedarf besonders gering. Da der Stellhebel meist kürzer und damit biegesteifer ist als die Schubstange, stützt sich vorzugsweise der Stellhebel an dem Anschlag ab. The invention is based on the problem to form a device of the type mentioned so on that it has ei ¬ nen particularly low energy consumption. This problem is inventively achieved in that are supported laterally on a stop in one of the end positions of the exhaust valve, the adjusting lever or the push rod. By this design, levers and push rod have a detent position in which they are held on the stop. Therefore, the exhaust valve is held passively in the one end position of the stop. The actuator requires no energy when the exhaust valve is held at least in one end position. Thus, the energy required to operate the device according to the invention energy consumption is particularly low. Since the adjusting lever is usually shorter and thus more rigid than the push rod, the adjusting lever is preferably supported on the stop.
Toleranzen zwischen Stellantrieb und Abgasventil lassen sich gemäß einer anderen vorteilhaften Weiterbildung der Erfindung einfach ausgleichen, wenn die Schubstange ein elastisches Element aufweist und wenn das elastische Element in der einen Endstellung des Abgasventils gespannt ist. Durch die Kombina¬ tion der Spannung des elastischen Elements mit der Abstützung des Stellhebels oder der Schubstange am Anschlag wird zudem das Abgasventil in seiner Endstellung zuverlässig gehalten. Das in der Schubstange angeordnete elastische Element be- grenzt zudem Lastspitzen beim Bewegen des Abgasventils in die Endstellung auf einen einstellbaren Wert. Daher kann das in der Schubstange angeordnete elastische Element ein in dem Stellantrieb oder einem Getriebe des Stellantriebs angeordne¬ tes elastisches Element ersetzen. Tolerances between actuator and exhaust valve can be easily compensated according to another advantageous embodiment of the invention, when the push rod has an elastic element and when the elastic element is stretched in the one end position of the exhaust valve. By Kombina ¬ tion of the voltage of the elastic element with the support of the actuating lever or the push rod on the stop the exhaust valve is also reliably held in its final position. The elastic element arranged in the push rod also limits load peaks when moving the exhaust valve into the end position to an adjustable value. Therefore, arranged in the push rod elastic member can replace a pre-arrange ¬ tes elastic in the actuator or transmission element of the actuator.
Der bauliche Aufwand zur Ansteuerung des Abgasventils lässt sich gemäß einer anderen vorteilhaften Weiterbildung der Erfindung besonders gering halten, wenn die Schubstange mit dem Stellhebel einen Kurbeltrieb bildet und wenn in einem Tot- punkt des Kurbeltriebs das Abgasventils die eine Endstellung hat und der Stellhebel oder die Schubstange bei dem Antrieb des Kurbeltriebs über den Totpunkt hinaus an dem Anschlag ab- gestützt ist. In dieser über den Totpunkt des Kurbeltriebs hinaus gedrehten Stellung kann eine von dem Abgasventil in die Schubstange eingeleitete Kraft nicht zu einem Verschwen¬ ken des Stellhebels führen, da Stellhebel und Schubstange blockiert sind. Erst wenn der Stellhebel über den Stellan¬ trieb über den Totpunkt wieder zurück verschwenkt wird, lässt sich die Schubstange in ihrer Längsrichtung verschieben und das Abgasventil antreiben. Bei der Verstellung des Abgasventils in die eine Endstellung wird der Kurbeltrieb bis zu dem Totpunkt gedreht. Bei Überwindung des Totpunkts schnappt der Kurbeltrieb ohne weiteren Antrieb durch den Stellantrieb mit dem Stellhebel oder der Schubstange gegen den Anschlag. Das in der Schubstange angeordnete elastische Element wird bei der Bewegung des Kurbeltriebs bis zum Totpunkt gespannt und wieder entspannt, wenn die Schubstange oder der Stellhebel gegen den Anschlag gelangen. The structural complexity for controlling the exhaust valve can be kept particularly low according to another advantageous embodiment of the invention, when the push rod with the lever forms a crank mechanism and if in a dead center of the crank mechanism, the exhaust valve has the one end position and the lever or the push rod in the case of the drive of the crank mechanism beyond the dead point on the stop is supported. In this position, which is rotated beyond the dead center of the crank mechanism, a force introduced into the push rod by the exhaust valve can not lead to a Verschwen ¬ ken of the control lever, as the lever and push rod are blocked. Only when the control lever on the Stellan ¬ drive is swung back over the dead center, the connecting rod can be moved in their longitudinal direction and drive the exhaust valve. When adjusting the exhaust valve in the one end position of the crank mechanism is rotated to the dead center. When overcoming the dead center of the crank mechanism snaps without further drive through the actuator with the lever or the push rod against the stop. The arranged in the push rod elastic element is stretched during the movement of the crank mechanism to the dead center and relaxed again when the push rod or the lever against the stop.
Die Schubstange und der Stellhebel könnten in der einen End¬ stellung des Abgasventils in gestreckter Lage hintereinander liegen. Das Abgasventil lässt sich jedoch gemäß einer anderen vorteilhaften Weiterbildung der Erfindung besonders leichtgängig verstellen, wenn die Schubstange und der Stellhebel in der einen Endstellung des Abgasventils parallel übereinander liegen . The push rod and the lever could be in one end ¬ position of the exhaust valve in an extended position one behind the other. However, the exhaust valve can be particularly easily adjusted according to another advantageous embodiment of the invention, when the push rod and the lever are parallel to each other in the one end position of the exhaust valve.
Meist ist im Grundzustand das Abgasventil dauerhaft geschlos¬ sen. Bei einem solchen Abgasventil lässt sich gemäß einer anderen vorteilhaften Weitebildung der Erfindung eine dauerhafte Bestromung des Stellantriebs vermeiden, wenn die eine End- Stellung der geschlossenen Stellung des Abgasventils entspricht . Most in the ground state, the exhaust valve is permanently CLOSED ¬ sen. In such an exhaust valve can be according to another advantageous Weitebildung the invention avoid a permanent energization of the actuator when the one end position corresponds to the closed position of the exhaust valve.
Die Schubstange lässt sich gemäß einer anderen vorteilhaften Weiterbildung der Erfindung mit dem elastischen Element zu einer baulichen Einheit vormontieren, wenn die Schubstange ein inneres Element und ein das innere Element teleskopartig übergreifendes äußeres Element hat und wenn das elastische Element zwischen dem inneren und dem äußeren Element angeordnet ist und sich an Absätzen des inneren und äußeren Elements abstützt . Die erfindungsgemäße Einrichtung ist besonders kompakt aufge¬ baut, wenn das elastische Element als Schraubenfeder ausge¬ bildet ist. The push rod can be preassembled according to another advantageous embodiment of the invention with the elastic member to a structural unit, when the push rod has an inner member and an inner member telescopically cross-outer member and when the elastic Element is disposed between the inner and the outer member and is supported on shoulders of the inner and outer members. The inventive device is particularly compact set ¬ builds when the elastic member is a coil spring being formed ¬.
Zur weiteren Vereinfachung des Ausgleichs von Toleranzen zwi- sehen Stellantrieb und Abgasventil trägt es gemäß einer vor¬ teilhaften Weiterbildung der Erfindung bei, wenn der Stellhebel und die Schubstange über ein Kugelgelenk miteinander verbunden sind. Die erfindungsgemäße Einrichtung gestaltet sich konstruktiv besonders einfach, wenn das Abgasventil eine senkrecht gegen eine Öffnung eines Abgaskanals schwenkbare Abgasklappe hat. Damit wirkt die Kraft des elastischen Elementes gegen den Druck in dem Abgaskanal. To further simplify the compensation of tolerances between see actuator and exhaust valve, it contributes according to an advantageous embodiment of the invention before ¬ when the adjusting lever and the push rod are connected to each other via a ball joint. The device according to the invention is structurally particularly simple if the exhaust valve has a vertically pivotable against an opening of an exhaust gas duct exhaust flap. Thus, the force of the elastic element acts against the pressure in the exhaust passage.
Zur weiteren Vereinfachung des Ausgleichs von Toleranzen zwischen Stellantrieb und Abgasventil trägt es gemäß einer vor¬ teilhaften Weiterbildung der Erfindung bei, wenn die To further simplify the compensation of tolerances between the actuator and the exhaust valve, it contributes according to an advantageous embodiment of the invention if the
Schubstange über ein Kugelgelenk mit einem Stellarm der Ab- gasklappe des Abgasventils verbindbar ist. Push rod via a ball joint with an actuating arm of the exhaust flap of the exhaust valve is connectable.
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 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 schematisch eine erfindungsgemäße Einrichtung zur Fig. 1 shows schematically a device according to the invention for
Ansteuerung eines Abgasventils, Fig. 2 schematisch die erfindungsgemäße Einrichtung beim  Control of an exhaust valve, Fig. 2 shows schematically the device according to the invention in
Schließen des Abgasventils, Fig. 3 schematisch die erfindungsgemäße Einrichtung in einer Endstellung, Closing the exhaust valve, 3 shows schematically the device according to the invention in an end position,
Fig. 4 beispielhaft eine Ausführungsform der erfindungs¬ gemäßen Einrichtung. Of the device Fig. 4 by way of example an embodiment of fiction, modern ¬.
Figur 1 zeigt schematisch eine Einrichtung mit einem von einem Stellantrieb 1 antreibbaren Kurbeltrieb 2 und ein über den Kurbeltrieb 2 antreibbares Abgasventil 3. Der Kurbeltrieb 2 hat eine Schubstange 4 und einen Stellhebel 5. In der FIG. 1 schematically shows a device with a crank drive 2 which can be driven by an actuator 1 and an exhaust valve 3 which can be driven via the crank drive 2. The crank drive 2 has a push rod 4 and a control lever 5
Schubstange 4 ist ein elastisches Element 6 angeordnet. Die Schubstange 4 ist über ein Gelenk 7 an einem Stellarm 8 des Abgasventils 3 angebunden. Der Stellarm 8 bewegt eine senkrecht auf eine Öffnung 9 eines Abgaskanals 10 schwenkbare Ab- gasklappe 11. Damit bilden die Abgasklappe 11, ein Ventilkör¬ per und die Öffnung 9 des Abgaskanals 10 einen Ventilsitz des Abgasventils 3. Die Richtung des im Abgaskanal 10 auf die Ab¬ gasklappe 11 wirkenden Drucks ist in der Zeichnung mit einem Pfeil und dem Buchstaben P gekennzeichnet. Push rod 4, an elastic element 6 is arranged. The push rod 4 is connected via a hinge 7 to a control arm 8 of the exhaust valve 3. The actuator arm 8 is moved a vertically pivotable on an opening 9 of an exhaust passage 10 exhaust flap 11. In order to form the exhaust gas valve 11, a Ventilkör ¬ by and the opening 9 of the exhaust passage 10 a valve seat of the exhaust valve 3. The direction of the exhaust passage 10 to the From ¬ gas flap 11 acting pressure is indicated in the drawing with an arrow and the letter P.
Zum Steuern des Abgasventils 3 lässt sich der Stellhebel 5 über den Stellantrieb 1 zwischen den beiden Positionen I und II verschwenken. In der Position I des Stellhebels 5 befindet sich das Abgasventil 3 in der vollständig geöffneten Endstel- lung. In der Position II des Stellhebels 5 befindet sich das Abgasventil 3 in der vollständig geschlossenen Endstellung. Das in der Schubstange 4 angeordnete elastische Element 6 ist im Wesentlichen entspannt und gleicht in den Positionen I und II Toleranzen zwischen dem Stellantrieb 1 und dem Abgasventil 3 aus. For controlling the exhaust valve 3, the adjusting lever 5 can be pivoted via the actuator 1 between the two positions I and II. In the position I of the control lever 5, the exhaust valve 3 is in the fully open end position. In position II of the control lever 5, the exhaust valve 3 is in the fully closed end position. The arranged in the push rod 4 elastic element 6 is substantially relaxed and compensates in the positions I and II tolerances between the actuator 1 and the exhaust valve 3 from.
Figur 2 zeigt die Einrichtung aus Figur 1 nach einem Antrieb des Stellhebels 5 durch den Stellantrieb 1 gegen den Uhrzei¬ gersinn in eine Position III. Hierbei wird das elastische Element 6 um den Betrag a gespannt. Das Abgasventil 3 ver¬ bleibt in seiner geschlossenen Endstellung. Der Stellhebel 5 und die Schubstange 4 liegen in dieser Position parallel übereinander. Die Position III kennzeichnet einen Totpunkt des Kurbeltriebs 2. Figure 2 shows the device of Figure 1 after a drive of the control lever 5 by the actuator 1 against the Uhrzei ¬ gersinn in a position III. Here, the elastic element 6 is stretched by the amount a. The exhaust valve 3 ver ¬ remains in its closed end position. The lever 5 and the push rod 4 are parallel in this position one above the other. The position III indicates a dead center of the crank mechanism. 2
Figur 3 zeigt die Einrichtung aus den Figuren 1 und 2 nach einem Antrieb des Stellhebels 5 durch den Stellantrieb 1 ge¬ gen den Uhrzeigersinn in die Position IV. Der Stellhebel 5 liegt seitlich an einem Anschlag 12 an. Das elastische Ele¬ ment 6 ist nur noch um den Betrag b gespannt. Das Abgasventil 3 wird damit von dem Anschlag 12 und dem elastischen Element 6 in der geschlossenen Endstellung gehalten. Ein von dem Abgas in dem Abgaskanal 10 auf die Abgasklappe 11 wirkender Druck führt dazu, dass der Stellhebel 5 weiter gegen den An¬ schlag 12 gezogen wird. Aus der an dem Anschlag 12 anliegenden Stellung IV lässt sich der Stellhebel 5 nur mittels des Stellantriebs 1 heraus antreiben. Figure 3 shows the device of Figures 1 and 2 for a drive of the control lever 5 by the actuator 1 ge ¬ gen clockwise in the position IV. The lever 5 is located on the side of a stop 12. The elastic ele ¬ ment 6 is excited only by the amount b. The exhaust valve 3 is thus held by the stop 12 and the elastic member 6 in the closed end position. A pressure acting from the exhaust gas in the exhaust passage 10 on the exhaust valve 11 pressure causes the control lever 5 is further pulled against the impact-on ¬ 12th From the voltage applied to the stop 12 position IV, the lever 5 can be driven only by means of the actuator 1 out.
Figur 4 zeigt eine Ausführungsform der Einrichtung der Figuren 1 bis 3 mit dem Stellantrieb 1 und dem Kurbeltrieb 2. Das Abgasventil 3 ist zur Vereinfachung der Zeichnung nicht dar- gestellt. Der Stellantrieb 1 hat einen Elektromotor 13, wel¬ cher über ein Getriebe 14 mit dem Kurbeltrieb 2 verbunden ist. Die Schubstange 4 hat jeweils ein Kugelgelenk 15, 16 zur Anbindung an dem Stellhebel 5 und an dem in Figur 1 dargestellten Stellarm 8 des Abgasventils 3. Weiterhin hat die Schubstange 4 ein inneres Element 17 und ein das innere Ele¬ ment 17 übergreifendes äußeres Element 18. Die Elemente 17, 18 der Schubstange 4 sind teleskopartig ineinanderschiebbar und weisen Absätze 19, 20 zur Abstützung des elastischen Elementes 6 auf. Das elastische Element 6 ist als zwischen den Elementen 17, 18 der Schubstange 4 angeordnete Schraubenfeder ausgebildet . Figure 4 shows an embodiment of the device of Figures 1 to 3 with the actuator 1 and the crank mechanism 2. The exhaust valve 3 is not shown to simplify the drawing. The actuator 1 has an electric motor 13, wel ¬ cher is connected via a gear 14 to the crank mechanism 2. The push rod 4 has a respective ball joint 15, 16 for connection to the actuating lever 5 and the example shown in Figure 1 actuator arm 8 of the exhaust valve 3. Further, the push rod 4 has an inner member 17 and an inner Ele ¬ element 17 cross outer member 18 The elements 17, 18 of the push rod 4 are telescopically telescoping and paragraphs 19, 20 for supporting the elastic member 6 on. The elastic element 6 is formed as arranged between the elements 17, 18 of the push rod 4 coil spring.

Claims

Einrichtung zur Ansteuerung eines Abgasventils (3) einer Brennkraftmaschine mit einem ansteuerbaren Stellantrieb (1), mit einem von dem Stellantrieb (1) antreibbaren Stellhebel (5) und mit einer die Bewegung des Stellhe¬ bels (5) auf das Abgasventil (3) übertragenden Schub¬ stange (4) , d a d u r c h g e k e n n z e i c h n e t , dass in einer der Endstellungen des Abgasventils (3) der Stellhebel (5) oder die Schubstange (4) seitlich an ei¬ nem Anschlag (12) abgestützt sind. Device for controlling an exhaust valve (3) of an internal combustion engine with a controllable actuator (1), with one of the actuator (1) drivable lever (5) and with a movement of the Stellhe ¬ lever (5) on the exhaust valve (3) transmitting Push rod ¬ (4), characterized in that in one of the end positions of the exhaust valve (3) of the adjusting lever (5) or the push rod (4) are laterally supported on egg ¬ nem stop (12).
Einrichtung nach Anspruch 1, d a d u r c h g e k e n n z e i c h n e t , dass die Schubstange (4) ein elastisches Element (6) aufweist und dass das elastische Element (6) in der einen Endstellung des Abgasventils (3) gespannt ist. Device according to claim 1, characterized in that the push rod (4) has an elastic element (6) and that the elastic element (6) is tensioned in the one end position of the exhaust valve (3).
Einrichtung nach Anspruch 1 oder 2, d a d u r c h g e k e n n z e i c h n e t , dass die Schubstange (4) mit dem Stellhebel (5) einen Kurbeltrieb (2) bildet und dass in einem Totpunkt des Kurbeltriebs (3) das Abgasventils (3) die eine Endstellung hat und der Stellhebel (5) oder die Schubstange (4) bei dem Antrieb des Kurbeltriebs (2) über den Totpunkt hinaus an dem Anschlag (12) abgestützt ist . Device according to claim 1 or 2, characterized in that the push rod (4) with the adjusting lever (5) forms a crank mechanism (2) and that in a dead center of the crank mechanism (3) the exhaust valve (3) has an end position and the adjusting lever ( 5) or the push rod (4) in the drive of the crank mechanism (2) beyond the dead center on the stop (12) is supported.
Einrichtung nach einem der vorhergehenden Ansprüche, d a d u r c h g e k e n n z e i c h n e t , dass die Schubstange (4) und der Stellhebel (5) in der einen End¬ stellung des Abgasventils (3) parallel übereinander lie¬ gen . Device according to one of the preceding claims, characterized in that the push rod (4) and the adjusting lever (5) in the one above the other lie ¬ gen ¬ a final position of the exhaust valve (3) in parallel.
Einrichtung nach einem der vorhergehenden Ansprüche, d a d u r c h g e k e n n z e i c h n e t , dass die eine Endstellung der geschlossenen Stellung des Abgasventils (3) entspricht. Einrichtung nach einem der vorhergehenden Ansprüche, d a d u r c h g e k e n n z e i c h n e t , dass die Schubstange (4) ein inneres Element (17) und ein das in¬ nere Element (17) teleskopartig übergreifendes äußeres Element (18) hat und dass das elastische Element (6) zwischen dem inneren und dem äußeren Element (17, 18) angeordnet ist und sich an Absätzen (19, 20) des inneren und äußeren Elements (17, 18) abstützt. Device according to one of the preceding claims, characterized in that the one end position corresponds to the closed position of the exhaust valve (3). Device according to one of the preceding claims, characterized in that the push rod (4) has an inner member (17) and the in ¬ nere member (17) telescopically cross outer member (18) and that the elastic element (6) between the inner and the outer member (17, 18) and is supported on shoulders (19, 20) of the inner and outer members (17, 18).
Einrichtung nach einem der vorhergehenden Ansprüche, d a d u r c h g e k e n n z e i c h n e t , dass das elastische Element (6) als Schraubenfeder ausgebildet ist . Device according to one of the preceding claims, characterized in that the elastic element (6) is designed as a helical spring.
Einrichtung nach einem der vorhergehenden Ansprüche, d a d u r c h g e k e n n z e i c h n e t , dass der Stellhebel (5) und die Schubstange (4) über ein Kugelge¬ lenk (15) miteinander verbunden sind. Device according to one of the preceding claims, characterized in that the adjusting lever (5) and the push rod (4) via a Kugelge ¬ steering (15) are interconnected.
Einrichtung nach einem der vorhergehenden Ansprüche, d a d u r c h g e k e n n z e i c h n e t , dass das Ab¬ gasventil (3) eine senkrecht gegen eine Öffnung eines Abgaskanals (10) schwenkbare Abgasklappe (11) hat. Device according to one of the preceding claims, characterized in that the Ab ¬ gas valve (3) has a perpendicular to an opening of an exhaust passage (10) pivotable exhaust flap (11).
Einrichtung nach Anspruch 9, d a d u r c h g e k e n n z e i c h n e t , dass die Schubstange (4) über ein Kugelgelenk (16) mit einem Stellarm (8) der Abgasklappe (11) des Abgasventils (3) verbindbar ist. Device according to claim 9, characterized in that the push rod (4) via a ball joint (16) with an actuating arm (8) of the exhaust valve (11) of the exhaust valve (3) is connectable.
EP11719807A 2010-05-10 2011-05-09 Device for controlling an exhaust valve of an internal combustion engine Withdrawn EP2569529A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010020115A DE102010020115A1 (en) 2010-05-10 2010-05-10 Device for controlling an exhaust valve of an internal combustion engine
PCT/EP2011/057444 WO2011141436A1 (en) 2010-05-10 2011-05-09 Device for controlling an exhaust valve of an internal combustion engine

Publications (1)

Publication Number Publication Date
EP2569529A1 true EP2569529A1 (en) 2013-03-20

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EP (1) EP2569529A1 (en)
KR (1) KR101902588B1 (en)
DE (1) DE102010020115A1 (en)
WO (1) WO2011141436A1 (en)

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US10697361B2 (en) * 2016-09-22 2020-06-30 Garrett Transportation I Inc. Linkage for exhaust bypass valve of multi-stage turbocharger
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DE102010020115A1 (en) 2011-11-10
CN102893013A (en) 2013-01-23
KR20130108505A (en) 2013-10-04
KR101902588B1 (en) 2018-09-28

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