EP2873839B1 - Fresh air system for an internal combustion engine - Google Patents

Fresh air system for an internal combustion engine Download PDF

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Publication number
EP2873839B1
EP2873839B1 EP14191754.2A EP14191754A EP2873839B1 EP 2873839 B1 EP2873839 B1 EP 2873839B1 EP 14191754 A EP14191754 A EP 14191754A EP 2873839 B1 EP2873839 B1 EP 2873839B1
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EP
European Patent Office
Prior art keywords
fresh air
flap
rotary shaft
air system
housing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Not-in-force
Application number
EP14191754.2A
Other languages
German (de)
French (fr)
Other versions
EP2873839A1 (en
Inventor
Winfried Brand
Ivano Morgillo
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.)
Mahle International GmbH
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Mahle International GmbH
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Filing date
Publication date
Application filed by Mahle International GmbH filed Critical Mahle International GmbH
Publication of EP2873839A1 publication Critical patent/EP2873839A1/en
Application granted granted Critical
Publication of EP2873839B1 publication Critical patent/EP2873839B1/en
Not-in-force legal-status Critical Current
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/10006—Air intakes; Induction systems characterised by the position of elements of the air intake system in direction of the air intake flow, i.e. between ambient air inlet and supply to the combustion chamber
    • 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
    • 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
    • F02D9/1005—Details of the flap
    • 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
    • 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
    • F02D9/109—Throttle valves specially adapted therefor; Arrangements of such valves in conduits having pivotally-mounted flaps having two or more flaps
    • F02D9/1095—Rotating on a common axis, e.g. having a common shaft
    • 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
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/10242—Devices or means connected to or integrated into air intakes; Air intakes combined with other engine or vehicle parts
    • F02M35/10295—Damping means, e.g. tranquillising chamber to dampen air oscillations
    • 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
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/10242—Devices or means connected to or integrated into air intakes; Air intakes combined with other engine or vehicle parts
    • F02M35/10301—Flexible, resilient, pivotally or movable parts; Membranes
    • 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
    • F02D2009/0269—Throttle closing springs; Acting of throttle closing springs on the throttle shaft
    • 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
    • F02D9/1005—Details of the flap
    • F02D9/1025—Details of the flap the rotation axis of the flap being off-set from the flap center axis

Definitions

  • a fresh air system for internal combustion engines is usually understood a device which is used for introducing fresh air into one or more combustion chambers of the internal combustion engine.
  • compression or compression of the fresh air takes place within the fresh air system, for example with the aid of an exhaust gas turbocharger.
  • the present invention therefore has as its object to provide a fresh air system in which the above-mentioned disadvantages are partially or even completely eliminated and which is characterized in particular by improved wear resistance.
  • the invention also has the task of providing an internal combustion engine with such a fresh air system. Finally, the task of completing a motor vehicle to such an internal combustion engine.
  • the basic idea of the invention is accordingly to provide said flap mechanism with a springy biasing element which is supported on the housing and biases the flap of the flap mechanism against either an open or a closed position of the flap arranged in the fresh air path.
  • a biasing element generates regardless of the instantaneous flap position of the flap a constantly effective biasing force on the flap, so that it can be generated without the action of an additional external force, such as can be actively generated for example by a drive connected to the rotary shaft of the flap mechanism actuator, automatically in the open Position or in the closed position is moved, if they have not already taken this position anyway.
  • the biasing force acting on the flap for a - in addition to the active operationally generated by an actuator and acting on the flap holding torque - provides additional holding element, whereby the entire flap mechanism particularly effective against unwanted self-oscillations can be protected up to said "rattling" of the flap.
  • the number of fresh air paths corresponds to the number of combustion chambers of the internal combustion engine, so that each fresh air path is assigned to exactly one combustion chamber.
  • a distribution of the fresh air to the individual fresh air paths may take place, for example, by means of a device known in the field of engine development as a fresh gas distributor and directly integrated into the fresh air system.
  • a flap for each path for selectively opening or closing the individual fresh air paths.
  • the various flaps can all be mounted on a common rotary shaft, which allows simultaneous rotation adjustment of the individual flaps in the fluid paths.
  • the fresh air paths extend parallel to one another in the region of the flaps, so that the rotary shaft can extend transversely to the individual fresh air paths.
  • an embodiment in which the resilient biasing element is designed as a leaf spring turns out to be particularly advantageous as a production technology.
  • This allows said leaf spring for desired bias of the flap (s) assembly technology in a simple way at one end - ie with a first end - on the housing of the fresh air system and the other - with a second end portion - on the rotary shaft or alternatively, to attach to the flap itself.
  • either a Switzerlandfeder- or a compression spring arrangement can result.
  • the biasing member is converted from an initial position by a rotation of the rotary shaft from said relaxed position to a stretched state.
  • the rotational movement leads to a compression of the biasing member, so that it is subjected to pressure.
  • the biasing force generated by the biasing member and acting on the rotary shaft is increased.
  • a realization as a tension or compression spring arrangement can prove constructively advantageous.
  • a mechanically stable attachment of the formed as a leaf or coil spring biasing element can be achieved by a complementary to the second end portion of the leaf spring recess formed on the rotary shaft, is arranged, which is rotatably provided to the rotary shaft at this.
  • a recess may be provided directly in the rotary shaft or directly in be formed on the flap.
  • a holding element may alternatively be attached to the flap or formed on this.
  • the recess in the event that the recess is not provided on the rotary shaft, but on the flap, be it directly on the flap itself or on a flap attached to or integrally formed on this holding element, it proves to be advantageous, the recess in to provide a storage area of the flap, in which this or the rotary shaft is rotatably mounted on the housing.
  • a mechanically permanently stable attachment of the leaf spring requires the provision of a recess with sufficient recess depth.
  • the maximum achievable in a rotary shaft or in a holding element with a cylindrical shape depth of the recess is limited, it makes sense to equip the holding element with an outwardly projecting extension, in which the recess for receiving the leaf spring can be provided.
  • the biasing member is formed as a leaf spring, it is recommended in an advantageous development, the first end portion of the leaf spring already in a non-mounted in the fresh air system, so relaxed state, curved form. Such a nature of the leaf spring allowed it to keep the installation space required for installation in the housing of the fresh air system low.
  • At least one flap of the flap mechanism is preferably equipped with a, in particular electrically driven, drive-connected to the rotary shaft actuator, by means of which the flap between the open and the closed position is rotationally adjustable.
  • the invention further relates to an internal combustion engine comprising at least one combustion chamber, which fluidly with a fresh air system with one or more of the aforementioned features.
  • the invention further relates to a motor vehicle with such a fresh air system.
  • FIGS. 1 a and 1 b illustrate a partial view of a fresh air system 1 according to the invention, which shows the flap mechanism 3 arranged in a housing 2 of the fresh air system 1 that is adequately dimensioned.
  • FIG. 2 shows the said flap mechanism 3 in a separate representation. In the example scenario this includes the FIG. 2 four on a common rotary shaft 4 rotatably mounted flaps 5 (the flaps 5 are in the illustration of FIGS. 1 a and 1 b not shown).
  • the four flaps 5 are each arranged in a fresh air path (not shown) of the fresh air system 1, so that the four fresh air paths are closed by a rotational movement of the rotationally adjustable on the housing 2 mounted rotary shaft 4 in a closed position of the flaps 5 of these fluid-tight. In an open position, however, the flaps 5 release the fresh air paths for flowing through with fresh air, so that they can be introduced into the combustion chamber connected downstream of the fresh air system 1 in fluidic manner. Of course, the flaps 5 can also be positioned in an intermediate position between said open and closed positions.
  • FIG. 1 a shows the leaf spring 7 in a position associated with an open position of the flaps 5; In contrast, the shows FIG. 1b Leaf spring 7 in a position corresponding to an open position of the flaps 5.
  • FIGS. 3a and 3b are roughly schematic examples of possible geometric shapes of the leaf spring 7, which may be formed as a flat metal band, for example.
  • a leaf spring 7 comprises a first end section 8 for support on the housing 2 of the fresh air system 1 and a second end section 9 for support on the rotary shaft 4.
  • the first end portion 8 of the leaf spring 7 is curved.
  • Such a nature of the leaf spring makes it possible to keep the space required for the installation of the leaf spring 7 in the housing 2 of the fresh air system 1 space relatively low.
  • a curved design of the leaf spring 7 is not limited only to the first end portion 8: In the example of FIG. 3b
  • the entire leaf spring 7 is curved with the exception of the second end portion 9.
  • the first end portion 8 of the leaf spring 7 can then be supported.
  • a mechanically stable attachment of the in the example scenario formed as a leaf spring 7 biasing element 8 can - even in the event that another type of spring, such as an already mentioned coil spring is used - achieve by a rotating member 4, a holding element 14 is provided in which the Recess 11 is arranged.
  • the holding member 14 may be formed as a separate component as shown in the figures and rotatably secured to the rotary shaft 4. Alternatively, it is also conceivable to form the holding element 14 integrally on the rotary shaft 4 (not shown). In a further variant, the recess 11 may also be provided directly on the rotary shaft 4 (not shown).
  • FIG. 2 For the sake of clarity, for example only for a single flap 5 is shown in dashed lines, the biasing element 6, for example in the form of the already mentioned leaf spring 7, also be supported on the flap 5.
  • a recess 11 already discussed above in connection with the rotary shaft 4 can also be provided on the flap 5.
  • the recess 11 can be provided directly in the flap 5 or as in FIG. 2 shown in dashed lines are provided in a holding element 14, which explained above in connection with the rotary shaft 4 and in the FIGS. 1 a and 1 b is shown.
  • the second end portion 9 of the leaf spring 7 can be used for support on the rotary shaft 4 and on the flap 5 in the recess 11.
  • an extension 12 is provided on the holding element 14, which is essentially hollow-cylindrical and in which said recess 11 is again arranged.
  • FIG. 5 For the permanent fixation of the leaf spring 7 in the recess 11, the expert opens up a variety of ways to think about an attachment by means of screwing, clipping or encapsulation. Even simple insertion of the second end portion 9 in the recess 11 is readily conceivable.
  • a tension spring arrangement (shown schematically in FIG. 6) or compression spring arrangement (shown schematically in FIG. 7 ) prove to be structurally particularly advantageous realization form.
  • tension spring assembly the biasing element 6, starting from a in FIG. 6 shown starting position by rotation of the rotary shaft 4 and the flap 5 in the direction of rotation D loaded on train and transferred to a relation to said starting position stretched state.
  • compression spring assembly causes a rotational movement of the rotary shaft 4 in the direction of rotation D, however, to a compression of the biasing member 6, so that this is subjected to pressure.
  • the biasing force generated by the biasing member 6 and acting on the rotary shaft 4 and the flap 5 is increased.
  • an implementation as a tension or compression spring arrangement may prove advantageous.
  • the flap mechanism 3 is preferably connected to one, in particular electrically driven, and drive-connected to the rotary shaft 4 Equipped actuator in FIG. 2 roughly schematically illustrated and provided with the reference numeral 13.

Description

Als Frischluftanlage für Brennkraftmaschinen wird üblicherweise eine Vorrichtung verstanden, die zum Einleiten von Frischluft in einen oder mehrere Brennräumen der Brennkraftmaschine dient. Bei einer aufgeladenen Brennkraftmaschine erfolgt innerhalb der Frischluftanlage eine Kompression bzw. Verdichtung der Frischluft, beispielsweise mit Hilfe eines Abgasturboladers.As a fresh air system for internal combustion engines is usually understood a device which is used for introducing fresh air into one or more combustion chambers of the internal combustion engine. In a supercharged internal combustion engine, compression or compression of the fresh air takes place within the fresh air system, for example with the aid of an exhaust gas turbocharger.

Hinsichtlich der Effektivität der in den Brennkammern stattfindenden Verbrennungsvorgänge von entscheidender Bedeutung ist eine Anpassung des durch die Frischluftanlage strömenden Luftmassenstroms an eine momentane Drehzahl der Brennkraftmaschine, welche wiederum durch die Frequenz, mit welcher die Prozessschritte bei der Verbrennung im Brennraum zyklisch durchgeführt werden, festgelegt wird. Moderne Frischluftanlagen sind daher oftmals mit einem Klappenmechanismus ausgestattet, mittels welchem der Leitungsquerschnitt des in der Frischluftanlage vorhandenen Frischluftpfads variiert und somit die in einem bestimmten Zeitintervall durch den Frischluftpfad strömende Luftmassenmenge eingestellt werden kann.With regard to the effectiveness of the combustion processes taking place in the combustion chambers, an adaptation of the air mass flow flowing through the fresh air system to an instantaneous rotational speed of the internal combustion engine, which in turn is determined by the frequency with which the process steps during combustion in the combustion chamber are cyclically determined. Modern fresh air systems are therefore often equipped with a flap mechanism, by means of which the line cross section of the fresh air path present in the fresh air system varies and thus the amount of air mass flowing through the fresh air path in a certain time interval can be adjusted.

Als problematisch bei einem solchen Klappenmechanismus erweisen sich indes oftmals dessen Schwingungseigenschaften, denn die typischerweise starr an einer Drehwelle befestigte Klappe ist im Betrieb der Frischluftanlage in der Regel sehr starken mechanischen Belastungen durch die den Frischluftpfad strömende Frischluft ausgesetzt. Da besagte Drehwelle üblicherweise nur endseitig an einem Gehäuse der Frischluftanlage gelagert ist, erweist sich gerade die Kombination aus Klappe und Drehwelle als anfällig für eine resonanzbedingte Anregung von Eigenschwingungen. Derartige Schwingungen können sich nach außen in Form störender Rassel- oder Klappergeräusche bemerkbar machen, bedingen jedoch in jedem Fall einen erhöhten Verschleiß der betroffenen Bauteile im Dauerbetrieb.However, often proving to be problematic in such a flap mechanism whose vibration characteristics, because the typically rigidly attached to a rotary shaft flap is exposed to the operation of the fresh air system usually very strong mechanical stress by the fresh air flowing fresh air. Since said rotary shaft is usually mounted only on the end of a housing of the fresh air system, just turns out the combination of flap and rotary shaft as prone to a resonance-induced excitation of natural vibrations. Such vibrations can be outwardly in shape annoying rattling or rattling noises make, however, require in any case increased wear of the affected components in continuous operation.

Die vorliegende Erfindung stellt sich daher die Aufgabe, eine Frischluftanlage zu schaffen, bei welcher die oben genannten Nachteile teilweise oder sogar vollständig ausgeräumt sind und welche sich insbesondere durch eine verbesserte Verschleißbeständigkeit auszeichnet. Die Erfindung stellt sich ferner die Aufgabe, eine Brennkraftmaschine mit einer solchen Frischluftanlage bereitzustellen. Schließlich stellt sich die Aufgabe, ein Kraftfahrzeug um eine solche Brennkraftmaschine zu ergänzen.The present invention therefore has as its object to provide a fresh air system in which the above-mentioned disadvantages are partially or even completely eliminated and which is characterized in particular by improved wear resistance. The invention also has the task of providing an internal combustion engine with such a fresh air system. Finally, the task of completing a motor vehicle to such an internal combustion engine.

Die genannten Aufgaben werden durch den Gegenstand der unabhängigen Patentansprüche gelöst. Bevorzugte Ausführungsformen sind Gegenstand der abhängigen Patentansprüche.The above objects are achieved by the subject matter of the independent claims. Preferred embodiments are subject of the dependent claims.

Grundgedanke der Erfindung ist demnach, besagten Klappenmechanismus mit einem federelastisches Vorspannelement zu versehen, welches sich am Gehäuse abstützt und die Klappe des Klappenmechanismus entweder gegen eine geöffnete oder eine geschlossenen Position der im Frischluftpfad angeordneten Klappe vorspannt. Ein solches Vorspannelement erzeugt unabhängig von der momentanen Klappenposition der Klappe eine ständig wirksame Vorspannkraft auf die Klappe, so dass diese ohne Einwirkung einer zusätzlichen äußeren Kraft, wie sie beispielsweise durch einen mit der Drehwelle des Klappenmechanismus antriebsverbundenen Aktuator aktiv erzeugt werden kann, selbsttätig in die geöffnete Position bzw. in die geschlossene Position bewegt wird, sofern sie nicht ohnehin schon diese Position eingenommen hat. In letzterem Fall sorgt die auf die Klappe wirkende Vorspannkraft für ein - neben dem von einem Aktuator betriebsmäßig aktiv erzeugten und auf die Klappe wirkenden Haltemoment - zusätzliches Haltelement, wodurch der gesamte Klappenmechanismus besonders wirksam gegen unerwünschte Eigenschwingungen bis hin zu besagtem "Rasseln" der Klappe geschützt werden kann.The basic idea of the invention is accordingly to provide said flap mechanism with a springy biasing element which is supported on the housing and biases the flap of the flap mechanism against either an open or a closed position of the flap arranged in the fresh air path. Such a biasing element generates regardless of the instantaneous flap position of the flap a constantly effective biasing force on the flap, so that it can be generated without the action of an additional external force, such as can be actively generated for example by a drive connected to the rotary shaft of the flap mechanism actuator, automatically in the open Position or in the closed position is moved, if they have not already taken this position anyway. In the latter case, the biasing force acting on the flap for a - in addition to the active operationally generated by an actuator and acting on the flap holding torque - provides additional holding element, whereby the entire flap mechanism particularly effective against unwanted self-oscillations can be protected up to said "rattling" of the flap.

Bei geeigneter Dimensionierung der federelastischen Eigenschaften des Vorspannelements, etwa durch geeignete Festlegung des Werts der Federkonstanten, lässt sich zudem ein dem einschlägigen Fachmann als "Fail-Save-Funktion" bekanntes Wirkprinzip realisieren, bei welchem die Klappe vom Vorspannelement im Falle eines Ausfalls des Aktuators selbsttätig in die geöffnete oder geschlossene Position - in letzterem Fall gegen den von der Frischluft erzeugten Fluiddruck - bewegt und in dieser gleichsam fixiert wird.With a suitable dimensioning of the resilient properties of the biasing element, such as by appropriate determination of the value of the spring constant, also known to those skilled in the art as "fail-safe function" known principle can be realized, in which the flap of the biasing element in the event of failure of the actuator automatically moved into the open or closed position - in the latter case against the fluid pressure generated by the fresh air - and is fixed in this as it were.

Bei einer bevorzugten Ausführungsform sind anstelle nur eines einzigen Frischluftpfads wenigstens zwei, vorzugsweise vier, solcher Frischluftpfade vorgesehen. Typischerweise entspricht die Zahl der Frischluftpfade der Anzahl an Brennräumen der Brennkraftmaschine, so dass jeder Frischluftpfad genau einem Brennraum zugeordnet ist. Eine Verteilung der Frischluft auf die einzelnen Frischluftpfade mag etwa mittels einer auf dem Gebiet der Motorentwicklung als Frischgasverteiler bekannten und direkt in die Frischluftanlage integrierbaren Vorrichtung erfolgen. Entsprechend der Anzahl an Frischluftpfaden ergibt sich auch das Erfordernis, für jeden Pfad eine Klappe zum wahlweisen Öffnen oder Verschließen der einzelnen Frischluftpfade bereitzustellen. Die verschiedenen Klappen können allesamt auf einer gemeinsamen Drehwelle angebracht sein, was eine simultane Drehverstellung der einzelnen Klappen in den Fluidpfaden gestattet. Typischerweise erstrecken sich die Frischluftpfade dabei im Bereich der Klappen parallel zueinander, so dass sich die Drehwelle quer zu den einzelnen Frischluftpfaden erstrecken kann.In a preferred embodiment, instead of just a single fresh air path, at least two, preferably four, of such fresh air paths are provided. Typically, the number of fresh air paths corresponds to the number of combustion chambers of the internal combustion engine, so that each fresh air path is assigned to exactly one combustion chamber. A distribution of the fresh air to the individual fresh air paths may take place, for example, by means of a device known in the field of engine development as a fresh gas distributor and directly integrated into the fresh air system. Depending on the number of fresh air paths, there is also the need to provide a flap for each path for selectively opening or closing the individual fresh air paths. The various flaps can all be mounted on a common rotary shaft, which allows simultaneous rotation adjustment of the individual flaps in the fluid paths. Typically, the fresh air paths extend parallel to one another in the region of the flaps, so that the rotary shaft can extend transversely to the individual fresh air paths.

Als fertigungstechnisch besonders vorteilhaft erweist sich indes eine Ausführungsform, bei welcher das federelastische Vorspannelement als Blattfeder ausgebildet ist. Dies gestattet es, besagte Blattfeder zur gewünschten Vorspannung der Klappe(n) montagetechnisch auf einfache Weise einenends - also mit einem ersten Endabschnitt - am Gehäuse der Frischluftanlage und anderenends - mit einem zweiten Endabschnitt - an der Drehwelle oder aber, alternativ dazu, an der Klappe selbst anzubringen.However, an embodiment in which the resilient biasing element is designed as a leaf spring turns out to be particularly advantageous as a production technology. This allows said leaf spring for desired bias of the flap (s) assembly technology in a simple way at one end - ie with a first end - on the housing of the fresh air system and the other - with a second end portion - on the rotary shaft or alternatively, to attach to the flap itself.

Um den zur Befestigung des Vorspannelements am Gehäuse erforderlichen Bauraum möglichst klein zu halten, empfiehlt es sich, am Gehäuse einen taschenartiger ausgebildeten Abstützungsbereich auszuformen. An den Gehäusewänden einer solchen Tasche kann sich der erste Endabschnitt der Blattfeder abstützen.In order to keep the space required for mounting the biasing member on the housing space as small as possible, it is recommended to form a pocket-like support area on the housing. On the housing walls of such a pocket, the first end portion of the leaf spring can be supported.

Je nachdem, wie das Vorspannelement zwischen Drehwelle bzw. Klappe und Gehäuse angeordnet wird, kann sich entweder eine Zugfeder- oder eine Druckfederanordnung ergeben. Bei erstgenannter Anordnung wird das Vorspannelement ausgehend von einer Ausgangsposition durch eine Drehung der Drehwelle aus besagter entspannter Position in einen gedehnten Zustand überführt. In letzterem Fall führt die Drehbewegung hingegen zu einer Stauchung des Vorspannelements, so dass dieses auf Druck beansprucht wird. In beiden genannten Fällen wird die vom Vorspannelement erzeugte und auf die Drehwelle wirkende Vorspannkraft erhöht. Je nach Einbausituation in der Frischluftanlage kann sich dabei eine Realisierung als Zug- oder Druckfederanordnung konstruktiv als vorteilhaft erweisen.Depending on how the biasing element between the rotary shaft or flap and housing is arranged, either a Zugfeder- or a compression spring arrangement can result. In the former arrangement, the biasing member is converted from an initial position by a rotation of the rotary shaft from said relaxed position to a stretched state. In the latter case, however, the rotational movement leads to a compression of the biasing member, so that it is subjected to pressure. In both said cases, the biasing force generated by the biasing member and acting on the rotary shaft is increased. Depending on the installation situation in the fresh air system, a realization as a tension or compression spring arrangement can prove constructively advantageous.

Eine mechanisch stabile Befestigung des als Blatt- oder Spiralfeder ausgebildeten Vorspannelements lässt sich erzielen, indem an der Drehwelle eine komplementär zum zweiten Endabschnitt der Blattfeder ausgebildete Ausnehmung,
angeordnet ist, die drehbar zur Drehwelle an dieser vorgesehen ist. Eine solche Ausnehmung mag etwa direkt in der Drehwelle vorgesehen oder auch direkt in der Klappe angeformt sein. Alternativ dazu ist es jedoch auch vorstellbar, ein separates Haltelement mit einer solchen Ausnehmung auszustatten und das Halteelement drehfest an der Drehwelle zu befestigen oder integral an dieser auszuformen. Ein solches Haltelement kann alternativ dazu auch an der Klappe befestigt oder an dieser ausgeformt werden. Auch für die dauerhafte Fixierung der Blattfeder in einer solchen Ausnehmung eröffnen sich dem Fachmann vielfältige Möglichkeiten: Vorstellbar ist etwa an eine Befesttigung mittels Verschrauben, Einclipsen oder Umspritzen. Auch einfaches Einstecken des zweiten Endabschnitts in die Ausnehmung ist generell vorstellbar.A mechanically stable attachment of the formed as a leaf or coil spring biasing element can be achieved by a complementary to the second end portion of the leaf spring recess formed on the rotary shaft,
is arranged, which is rotatably provided to the rotary shaft at this. Such a recess may be provided directly in the rotary shaft or directly in be formed on the flap. Alternatively, however, it is also conceivable to equip a separate retaining element with such a recess and to fix the retaining element in a rotationally fixed manner to the rotary shaft or to form it integrally therewith. Such a holding element may alternatively be attached to the flap or formed on this. Also for the permanent fixation of the leaf spring in such a recess the skilled person opens up many possibilities: It is conceivable, for example, to a fastening by means of screwing, clipping or encapsulation. Even simple insertion of the second end portion into the recess is generally conceivable.

Für den Fall, dass die Ausnehmung nicht an der Drehwelle, sondern an der Klappe vorgesehen wird, sei es direkt an der Klappe selbst oder an einem an der Klappe befestigten oder integral an dieser ausgeformten Halteelement, so erweist es sich als vorteilhaft, die Ausnehmung in einem Lagerbereich der Klappe vorzusehen, in welchem diese bzw. die Drehwelle drehverstellbar am Gehäuse gelagert ist.In the event that the recess is not provided on the rotary shaft, but on the flap, be it directly on the flap itself or on a flap attached to or integrally formed on this holding element, it proves to be advantageous, the recess in to provide a storage area of the flap, in which this or the rotary shaft is rotatably mounted on the housing.

Eine mechanisch dauerhaft stabile Befestigung der Blattfeder bedingt die Bereitstellung einer Ausnehmung mit ausreichender Ausnehmungstiefe. Da jedoch die in einer Drehwelle bzw. in einem Haltelement mit zylindrischer Formgebung maximal realisierbare Tiefe der Ausnehmung limitiert ist, bietet es sich an, das Halteelement mit einem nach außen abstehenden Fortsatz auszustatten, in welchem die Ausnehmung zur Aufnahme der Blattfeder vorgesehen werden kann. Da das Vorspannelement als Blattfeder ausgebildet ist, empfiehlt es sich bei einer vorteilhaften Weiterbildung, den ersten Endabschnitt der Blattfeder bereits in einem nicht in die Frischluftanlage montierten, also entspannten Zustand, gekrümmt auszubilden. Eine solche Beschaffenheit der Blattfeder gestattet es, den für den Einbau in das Gehäuse der Frischluftanlage erforderlichen Bauraum gering zu halten.A mechanically permanently stable attachment of the leaf spring requires the provision of a recess with sufficient recess depth. However, since the maximum achievable in a rotary shaft or in a holding element with a cylindrical shape depth of the recess is limited, it makes sense to equip the holding element with an outwardly projecting extension, in which the recess for receiving the leaf spring can be provided. Since the biasing member is formed as a leaf spring, it is recommended in an advantageous development, the first end portion of the leaf spring already in a non-mounted in the fresh air system, so relaxed state, curved form. Such a nature of the leaf spring allowed it to keep the installation space required for installation in the housing of the fresh air system low.

Zur gesteuerten Bewegung der Drehwelle und der daran angebrachten wenigstens einen Klappe ist der Klappenmechanismus bevorzugt mit einem, insbesondere elektrisch angetriebenen, mit der Drehwelle antriebsverbundenen Aktuator ausgestattet, mittels welchem die Klappe zwischen der geöffneten und der geschlossenen Position drehverstellbar ist.For controlled movement of the rotary shaft and attached thereto at least one flap of the flap mechanism is preferably equipped with a, in particular electrically driven, drive-connected to the rotary shaft actuator, by means of which the flap between the open and the closed position is rotationally adjustable.

Die Erfindung betrifft ferner eine wenigstens eine Brennkammer umfassende Brennkraftmaschine, die fluidisch mit einer Frischluftanlage mit einem oder mehreren der vorangehend genannten Merkmale. Die Erfindung betrifft ferner ein Kraftfahrzeug mit einer solchen Frischluftanlage.The invention further relates to an internal combustion engine comprising at least one combustion chamber, which fluidly with a fresh air system with one or more of the aforementioned features. The invention further relates to a motor vehicle with such a fresh air system.

Weitere wichtige Merkmale und Vorteile der Erfindung ergeben sich aus den Unteransprüchen, aus den Zeichnungen und aus der zugehörigen Figurenbeschreibung anhand der Zeichnungen.Other important features and advantages of the invention will become apparent from the dependent claims, from the drawings and from the associated figure description with reference to the drawings.

Es versteht sich, dass die vorstehend genannten und die nachstehend noch zu erläuternden Merkmale nicht nur in der jeweils angegebenen Kombination, sondern auch in anderen Kombinationen oder in Alleinstellung verwendbar sind, ohne den Rahmen der vorliegenden Erfindung zu verlassen.It is understood that the features mentioned above and those yet to be explained below can be used not only in the particular combination given, but also in other combinations or in isolation, without departing from the scope of the present invention.

Bevorzugte Ausführungsbeispiele der Erfindung sind in den Zeichnungen dargestellt und werden in der nachfolgenden Beschreibung näher erläutert, wobei sich gleiche Bezugszeichen auf gleiche oder ähnliche oder funktional gleiche Komponenten beziehen.Preferred embodiments of the invention are illustrated in the drawings and will be described in more detail in the following description, wherein like reference numerals refer to the same or similar or functionally identical components.

Es zeigen, jeweils schematisch

Fig. 1 a/b
jeweils Teilansichten einer erfindungsgemäßen Frischluftanlage,
Fig. 2
einen Klappenmechanismus der Frischluftanlage mit vier Klappen,
Fig.3a/b
Beispiele eines als Blattfeder ausgebildeten Vorspannelements,
Fig. 4/5
den Klappenmechanismus ohne/mit an der Drehwelle montierter Blattfeder, jeweils in einem Querschnitt,
Fig. 6
eine schematische Darstellung des Klappenmechanismus als Teil einer Zugfederanordnung,
Fig. 7
eine schematische Darstellung des Klappenmechanismus als Teil einer Druckfederanordnung.
It show, each schematically
Fig. 1 a / b
each partial views of a fresh air system according to the invention,
Fig. 2
a flap mechanism of the fresh air system with four flaps,
3a / b
Examples of a biasing element formed as a leaf spring,
Fig. 4/5
the flap mechanism without / with mounted on the rotary shaft leaf spring, in each case in a cross section,
Fig. 6
a schematic representation of the flap mechanism as part of a tension spring assembly,
Fig. 7
a schematic representation of the flap mechanism as part of a compression spring arrangement.

Die Figuren 1 a und 1 b illustrieren eine Teilansicht einer erfindungsgemäßen Frischluftanlage 1, welche den in einem ausreichend dimensionierten Gehäuse 2 der Frischluftanlage 1 angeordneten Klappenmechanismus 3 zeigt. Figur 2 zeigt den besagten Klappenmechanismus 3 in einer separaten Darstellung. Dieser umfasst im Beispielszenario der Figur 2 vier an einer gemeinsamen Drehwelle 4 drehfest befestigte Klappen 5 (die Klappen 5 sind in der Darstellung der Figuren 1 a und 1 b nicht gezeigt).The FIGS. 1 FIGS. 1 a and 1 b illustrate a partial view of a fresh air system 1 according to the invention, which shows the flap mechanism 3 arranged in a housing 2 of the fresh air system 1 that is adequately dimensioned. FIG. 2 shows the said flap mechanism 3 in a separate representation. In the example scenario this includes the FIG. 2 four on a common rotary shaft 4 rotatably mounted flaps 5 (the flaps 5 are in the illustration of FIGS. 1 a and 1 b not shown).

Die vier Klappen 5 sind jeweils in einem Frischluftpfad (nicht gezeigt) der Frischluftanlage 1 angeordnet, so dass die vier Frischluftpfade durch eine Drehbewegung der drehverstellbar am Gehäuse 2 gelagerten Drehwelle 4 in eine geschlossene Position der Klappen 5 von diesen fluiddicht verschlossen werden. In einer geöffneten Position geben die Klappen 5 hingegen die Frischluftpfade zum Durchströmen mit Frischluft frei, so dass diese in fluidisch der Frischluftanlage 1 nachgeschaltete Brennkammern eingeleitet werden kann. Selbstverständlich lassen sich die Klappen 5 auch in einer Zwischenposition zwischen besagter geöffneter und geschlossener Position positionieren.The four flaps 5 are each arranged in a fresh air path (not shown) of the fresh air system 1, so that the four fresh air paths are closed by a rotational movement of the rotationally adjustable on the housing 2 mounted rotary shaft 4 in a closed position of the flaps 5 of these fluid-tight. In an open position, however, the flaps 5 release the fresh air paths for flowing through with fresh air, so that they can be introduced into the combustion chamber connected downstream of the fresh air system 1 in fluidic manner. Of course, the flaps 5 can also be positioned in an intermediate position between said open and closed positions.

Der Klappenmechanismus 3 ist nunmehr mit einem federelastischen Vorspannelement 6 in Form einer Blattfeder 7 ausgestattet, welches sich am Gehäuse 2 abstützt und die Klappen 5 entweder gegen deren geöffnete oder die geschlossenen Position vorspannt. Figur 1 a zeigt die Blattfeder 7 in einer Position, welche einer geöffneten Position der Klappen 5 zugeordnet ist; demgegenüber zeigt die Figur 1b Blattfeder 7 in einer Position, die einer geöffneten Position der Klappen 5 entspricht.The flap mechanism 3 is now equipped with a resilient biasing element 6 in the form of a leaf spring 7, which is supported on the housing 2 and biases the flaps 5 either against their open or the closed position. FIG. 1 a shows the leaf spring 7 in a position associated with an open position of the flaps 5; In contrast, the shows FIG. 1b Leaf spring 7 in a position corresponding to an open position of the flaps 5.

In den Figuren 3a und 3b sind grobschematisch Beispiele für mögliche geometrische Formgebungen der Blattfeder 7, die etwa als flaches Metallband ausgebildet sein mag, gezeigt. Eine solche Blattfeder 7 umfasst einen ersten Endabschnitt 8 zur Abstützung am Gehäuse 2 der Frischluftanlage 1 sowie einen zweiten Endabschnitt 9 zur Abstützung an der Drehwelle 4.In the FIGS. 3a and 3b are roughly schematic examples of possible geometric shapes of the leaf spring 7, which may be formed as a flat metal band, for example. Such a leaf spring 7 comprises a first end section 8 for support on the housing 2 of the fresh air system 1 and a second end section 9 for support on the rotary shaft 4.

Im Beispiel der Figur 3a ist der erste Endabschnitt 8 der Blattfeder 7 gekrümmt ausgebildet. Eine solche Beschaffenheit der Blattfeder gestattet es, den für den Einbau der Blattfeder 7 in das Gehäuse 2 der Frischluftanlage 1 erforderlichen Bauraum relativ gering zu halten. Eine gekrümmte Ausbildung der Blattfeder 7 ist aber nicht nur auf deren ersten Endabschnitt 8 beschränkt: Im Beispiel der Figur 3b etwa ist die gesamte Blattfeder 7 mit Ausnahme des zweiten Endabschnitts 9 gekrümmt ausgebildet.In the example of FIG. 3a the first end portion 8 of the leaf spring 7 is curved. Such a nature of the leaf spring makes it possible to keep the space required for the installation of the leaf spring 7 in the housing 2 of the fresh air system 1 space relatively low. However, a curved design of the leaf spring 7 is not limited only to the first end portion 8: In the example of FIG. 3b For example, the entire leaf spring 7 is curved with the exception of the second end portion 9.

Um nun den zur Befestigung der Blattfeder 7 am Gehäuse erforderlichen Bauraum möglichst gering zu halten, empfiehlt es sich, am Gehäuse 2 einen in den Figuren 1a/1b schematisch gezeigten, taschenartig ausgebildeten Abstützungsbereich 10 auszuformen. An den Gehäusewänden einer solchen Tasche kann sich dann der erste Endabschnitt 8 der Blattfeder 7 abstützen.In order to keep the space required for mounting the leaf spring 7 on the housing space as low as possible, it is recommended that the housing 2 in the Figures 1a / 1b schematically shown to form pocket-like support portion 10. On the housing walls of such a pocket, the first end portion 8 of the leaf spring 7 can then be supported.

Eine mechanisch stabile Befestigung des im Beispielszenario als Blattfeder 7 ausgebildeten Vorspannelements 8 lässt sich - auch für den Fall, dass ein anderer Federtyp, etwa eine bereits erwähnte Spiralfeder verwendet wird - erzielen, indem an der Drehwelle 4 ein Halteelement 14 vorgesehen wird, in welchem die Ausnehmung 11 angeordnet ist. Das Halteelement 14 kann wie in den Figuren gezeigt als separates Bauteil ausgebildet und drehfest an der Drehwelle 4 befestigt werden. Alternativ dazu ist es aber auch vorstellbar, das Halteelement 14 integral an der Drehwelle 4 auszuformen (nicht gezeigt). In einer weiteren Variante kann die Ausnehmung 11 auch direkt an der Drehwelle 4 vorgesehen sein (nicht gezeigt).A mechanically stable attachment of the in the example scenario formed as a leaf spring 7 biasing element 8 can - even in the event that another type of spring, such as an already mentioned coil spring is used - achieve by a rotating member 4, a holding element 14 is provided in which the Recess 11 is arranged. The holding member 14 may be formed as a separate component as shown in the figures and rotatably secured to the rotary shaft 4. Alternatively, it is also conceivable to form the holding element 14 integrally on the rotary shaft 4 (not shown). In a further variant, the recess 11 may also be provided directly on the rotary shaft 4 (not shown).

In einer weiteren Variante des Beispiels, die in Figur 2 der Übersichtlichkeit halber beispielshaft nur für eine einzige Klappe 5 in gestrichelter Darstellung gezeigt ist, kann das Vorspannelement 6, beispielsweise in Form der bereits genannten Blattfeder 7, sich auch an der Klappe 5 abstützen. Hierzu kann auch an der Klappe 5 eine oben bereits im Zusammenhang mit der Drehwelle 4 diskutierte Ausnehmung 11 vorgesehen werden. Analog zum obigen Beispiel kann die Ausnehmung 11 direkt in der Klappe 5 vorgesehen werden oder wie in Figur 2 in gestrichelter Darstellung gezeigt in einem Halteelement 14 vorgesehen werden, welches vorangehend im Zusammenhang mit der Drehwelle 4 erläutert und in den Figuren 1 a und 1 b gezeigt ist. Wird die Ausnehmung 11 - sei es direkt oder indirekt in besagtem Halteelement 14 - in der Klappe 5 vorgesehen, so erweist es sich als vorteilhaft, die Ausnehmung in einem Bereich der Klappe 5 anzuordnen, in welchem diese bzw. die Drehwelle 4 am Gehäuse 2 gelagert wird. Dieser Bereich ist in Figur 2 exemplarisch für eine einzige Klappe 5 mit dem Bezugszeichen 15 bezeichnet.In a further variant of the example, in FIG. 2 For the sake of clarity, for example only for a single flap 5 is shown in dashed lines, the biasing element 6, for example in the form of the already mentioned leaf spring 7, also be supported on the flap 5. For this purpose, a recess 11 already discussed above in connection with the rotary shaft 4 can also be provided on the flap 5. Analogous to the above example, the recess 11 can be provided directly in the flap 5 or as in FIG. 2 shown in dashed lines are provided in a holding element 14, which explained above in connection with the rotary shaft 4 and in the FIGS. 1 a and 1 b is shown. If the recess 11 - be it directly or indirectly in said holding element 14 - provided in the flap 5, it proves to be advantageous to arrange the recess in a region of the flap 5, in which this or the rotary shaft 4 is mounted on the housing 2 becomes. This area is in FIG. 2 exemplarily for a single flap 5 denoted by the reference numeral 15.

In allen Fällen kann der zweite Endabschnitt 9 der Blattfeder 7 zur Abstützung an der Drehwelle 4 bzw. an der Klappe 5 in die Ausnehmung 11 eingesetzt werden.In all cases, the second end portion 9 of the leaf spring 7 can be used for support on the rotary shaft 4 and on the flap 5 in the recess 11.

Um die Ausnehmung 11 mit einer für die stabile Fixierung der Blattfeder 7 besonders großer Ausnehmungstiefe versehen zu können, ist an dem im Wesentlichen hohlzylindrisch ausgebildeten Haltelement 14 ein Fortsatz 12 vorgesehen, in welchem wiederum besagte Ausnehmung 11 angeordnet ist.In order to be able to provide the recess 11 with a recess depth which is particularly large for the stable fixing of the leaf spring 7, an extension 12 is provided on the holding element 14, which is essentially hollow-cylindrical and in which said recess 11 is again arranged.

Zur Illustration zeigt die Figur 5 den Klappenmechanismus 3 mit in die Ausnehmung 11 eingesetzter Blattfeder 7. Für die dauerhafte Fixierung der Blattfeder 7 in der Ausnehmung 11 eröffnet sich dem Fachmann eine Vielzahl von Möglichkeiten, zu denken ist etwa an eine Befestigung mittels Verschrauben, Einclipsen oder Umspritzen. Auch einfaches Einstecken des zweiten Endabschnitts 9 in die Ausnehmung 11 ist ohne weiteres denkbar.For illustration, the FIG. 5 For the permanent fixation of the leaf spring 7 in the recess 11, the expert opens up a variety of ways to think about an attachment by means of screwing, clipping or encapsulation. Even simple insertion of the second end portion 9 in the recess 11 is readily conceivable.

Je nachdem, wie das Vorspannelement 6 zwischen Drehwelle 4 und Gehäuse 2 angeordnet wird, kann sich eine Zugfederanordnung (schematisch gezeigt in Figur 6) oder Druckfederanordnung (schematisch gezeigt in Figur 7) als konstruktiv besonders vorteilhafte Realisierungsform erweisen. Im Falle der in Fig. 6 dargestellten Zugfederanordnung wird das Vorspannelement 6 ausgehend von einer in Figur 6 gezeigten Ausgangsposition durch Drehung der Drehwelle 4 bzw. der Klappe 5 in Drehrichtung D auf Zug belastet und in einen gegenüber besagter Ausgangsposition gedehnten Zustand überführt. Im Falle der in Figur 7 gezeigten Druckfederanordnung führt eine Drehbewegung der Drehwelle 4 in Drehrichtung D hingegen zu einer Stauchung des Vorspannelements 6, so dass dieses auf Druck beansprucht wird. In beiden Fällen wird die vom Vorspannelement 6 erzeugte und auf die Drehwelle 4 bzw. die Klappe 5 wirkende Vorspannkraft erhöht. Je nach Einbausituation in der Frischluftanlage 1 kann sich eine Realisierung als Zug- oder Druckfederanordnung als vorteilhaft erweisen.Depending on how the biasing element 6 is arranged between the rotary shaft 4 and the housing 2, a tension spring arrangement (shown schematically in FIG. 6) or compression spring arrangement (shown schematically in FIG FIG. 7 ) prove to be structurally particularly advantageous realization form. In the case of in Fig. 6 shown tension spring assembly, the biasing element 6, starting from a in FIG. 6 shown starting position by rotation of the rotary shaft 4 and the flap 5 in the direction of rotation D loaded on train and transferred to a relation to said starting position stretched state. In the case of in FIG. 7 In contrast, shown compression spring assembly causes a rotational movement of the rotary shaft 4 in the direction of rotation D, however, to a compression of the biasing member 6, so that this is subjected to pressure. In both cases, the biasing force generated by the biasing member 6 and acting on the rotary shaft 4 and the flap 5 is increased. Depending on the installation situation in the fresh air system 1, an implementation as a tension or compression spring arrangement may prove advantageous.

Zur gesteuerten Bewegung der Drehwelle 4 und der daran angebrachten wenigstens einen Klappe 5 ist der Klappenmechanismus 3 bevorzugt mit einem, insbesondere elektrisch angetriebenen, und mit der Drehwelle 4 antriebsverbundenen Aktuator ausgestattet, der in Figur 2 grobschematisch dargestellt und mit dem Bezugszeichen 13 versehen ist.For the controlled movement of the rotary shaft 4 and attached thereto at least one flap 5, the flap mechanism 3 is preferably connected to one, in particular electrically driven, and drive-connected to the rotary shaft 4 Equipped actuator in FIG. 2 roughly schematically illustrated and provided with the reference numeral 13.

Claims (8)

  1. Fresh air system (1) for supplying combustion chambers of an internal combustion engine with fresh air,
    - with a housing (2), through which at least one fresh air path passes,
    - a flap mechanism (3) comprising at least one flap (5) adjustably mounted on the housing (2), the flap being rotatably adjustable between a closed position, in which it closes off the fresh air path in a fluid-tight manner, and an opened position, in which it opens the fresh air path for fresh air to flow through,
    - wherein the flap mechanism (3) comprises a spring-elastic preload element (6), which supports itself on the housing (2) and preloads the flap (5) either against the opened or the closed position,
    - wherein the flap mechanism (3) comprises an actuator (13) which is drive-connected with the rotary shaft (4) by means of which the at least one flap (5) is rotatably adjustable between the opened and the closed position,
    - wherein the flap mechanism (3) is configured such that, in the event of a breakdown of the actuator (5), the preload element (6) autonomously moves the flap (5) into the opened or closed position and fixes it therein,
    characterized in that
    - the spring-elastic preload element (6) is formed as a leaf spring (7) which supports itself with a first end portion (8) on the housing (2) and with a second end portion (9) on the rotary shaft (4) for preloading the flap (5),
    - the second end portion (9) of the leaf spring (7) is received in a recess (11) provided on the rotary shaft (4) in a fixed location relative to the same.
  2. Fresh air system according to claim 1,
    characterized in that
    at least two, preferably four, fresh air paths are provided, in each of which a flap (5) is provided, wherein the at least two, preferably four, flaps (5) are each attached to a common rotary shaft (4) in a rotationally fixed manner, wherein the rotary shaft is rotation-adjustably mounted on the housing (2).
  3. Fresh air system according to any of the preceding claims,
    characterized in that
    a pocket-like support region (10) is provided on the housing (2), the support region supporting the first end portion (8) of the leaf spring or spiral spring (7).
  4. Fresh air system according to any of the preceding claims,
    characterized in that
    the preload element (6) is arranged between the housing (2) and the rotary shaft (4) such that it acts as either a tension spring or a compression spring.
  5. Fresh air system according to any of the preceding claims,
    characterized in that
    the recess (11) is provided on a holding element (14) which is attached on the rotary shaft (4) in a rotationally fixed manner, which holding element is substantially formed hollow-cylindrically and comprises an extension (12) projecting radially outwards, wherein the recess (11) for receiving the leaf spring or the spiral spring (7) is arranged in the extension.
  6. Fresh air system according to any of the preceding claims,
    characterized in that
    - the preload element (6) is formed as a leaf spring (7),
    - at least the first end portion (8) of the leaf spring (7) is curved.
  7. Combustion engine,
    - with at least one combustion chamber,
    - with a fresh air system (1) according to any of the preceding claims which is fluidly connected to the combustion chamber.
  8. Motor vehicle with at least one combustion engine according to claim 7.
EP14191754.2A 2013-11-13 2014-11-04 Fresh air system for an internal combustion engine Not-in-force EP2873839B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102013223137.7A DE102013223137A1 (en) 2013-11-13 2013-11-13 Fresh air system for an internal combustion engine

Publications (2)

Publication Number Publication Date
EP2873839A1 EP2873839A1 (en) 2015-05-20
EP2873839B1 true EP2873839B1 (en) 2017-05-31

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US (1) US9664150B2 (en)
EP (1) EP2873839B1 (en)
JP (1) JP6453052B2 (en)
CN (1) CN104632423B (en)
DE (1) DE102013223137A1 (en)

Family Cites Families (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2108817B1 (en) 1970-10-08 1977-01-21 Citroen Sa
US3821941A (en) * 1973-01-02 1974-07-02 F Rychlik Valving for internal combustion engine
JPS54106719A (en) * 1978-02-10 1979-08-22 Yamaha Motor Co Ltd Suction apparatus for multi-cylinder engine
US4445473A (en) * 1978-04-13 1984-05-01 Yamaha Hatsudoki Kabushiki Kaisha Control of carburetor-supplied induction system
JPS58109531U (en) * 1982-01-21 1983-07-26 トヨタ自動車株式会社 Intake system structure of internal combustion engine
JPH0684729B2 (en) * 1990-07-27 1994-10-26 日本電装株式会社 Throttle valve opening / closing device for internal combustion engine
JP2593364B2 (en) * 1991-03-01 1997-03-26 本田技研工業株式会社 Intake device for multi-cylinder internal combustion engine
JP3760513B2 (en) * 1996-07-17 2006-03-29 日産自動車株式会社 Valve opening pressure regulator
JP3397613B2 (en) * 1997-01-09 2003-04-21 株式会社日立ユニシアオートモティブ Position return or holding device for reciprocating mechanism
US6129071A (en) * 1998-07-20 2000-10-10 Ford Global Technologies, Inc. Throttle valve system
US6390062B1 (en) * 1999-05-10 2002-05-21 Hitachi, Ltd. Throttle device of internal combustion engine
US6488010B2 (en) * 2000-01-18 2002-12-03 Hitachi, Ltd. Throttle device for internal-combustion engine
JP2002349378A (en) * 2001-05-24 2002-12-04 Keihin Corp Intake manifold device for internal combustion engine
JP2004132289A (en) * 2002-10-11 2004-04-30 Mikuni Corp Multiple throttle device
DE102004016912A1 (en) 2003-08-07 2005-11-03 Robert Bosch Gmbh Actuator for the control of internal combustion engines
DE102004019980A1 (en) * 2004-04-23 2005-11-17 Iav Gmbh Ingenieurgesellschaft Auto Und Verkehr Regulator valve to control air feed into cylinder chambers of IC engines has valve flap pivoted into/out of intake channel, with pivot shaft located outside the channel
JP4575049B2 (en) * 2004-07-02 2010-11-04 三菱電機株式会社 Engine intake air amount control device
DE102006008346B4 (en) 2006-02-21 2008-06-19 J. Eberspächer GmbH & Co. KG Throttle arrangement and exhaust system equipped with it
US20080110435A1 (en) * 2006-11-13 2008-05-15 Oswald Baasch Air valve and method of use
EP2017510B1 (en) * 2007-06-12 2011-03-23 Arno Hofmann Gas fed revolving flap valve
US7628250B2 (en) * 2007-11-21 2009-12-08 Emcon Technologies Llc Passive valve assembly for vehicle exhaust system
EP2133538B1 (en) * 2008-06-10 2012-12-12 Arno Hofmann Throttle valve provided with torsion spring
JP2011007089A (en) * 2009-06-24 2011-01-13 Keihin Corp Control device of multiple string throttle valve

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DE102013223137A1 (en) 2015-05-28
US20150128903A1 (en) 2015-05-14
CN104632423A (en) 2015-05-20
JP6453052B2 (en) 2019-01-16
CN104632423B (en) 2018-10-16
EP2873839A1 (en) 2015-05-20
US9664150B2 (en) 2017-05-30
JP2015094361A (en) 2015-05-18

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