DE202007007117U1 - Internal combustion engine - Google Patents
Internal combustion engine Download PDFInfo
- Publication number
- DE202007007117U1 DE202007007117U1 DE202007007117U DE202007007117U DE202007007117U1 DE 202007007117 U1 DE202007007117 U1 DE 202007007117U1 DE 202007007117 U DE202007007117 U DE 202007007117U DE 202007007117 U DE202007007117 U DE 202007007117U DE 202007007117 U1 DE202007007117 U1 DE 202007007117U1
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- Germany
- Prior art keywords
- fresh gas
- internal combustion
- valve
- combustion engine
- exhaust gas
- Prior art date
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- Expired - Lifetime
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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
- F02M35/104—Intake manifolds
- F02M35/108—Intake manifolds with primary and secondary intake passages
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/0025—Controlling engines characterised by use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
- F02D41/0047—Controlling exhaust gas recirculation [EGR]
- F02D41/005—Controlling exhaust gas recirculation [EGR] according to engine operating conditions
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/0025—Controlling engines characterised by use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
- F02D41/0047—Controlling exhaust gas recirculation [EGR]
- F02D41/0065—Specific aspects of external EGR control
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
- F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
- F02M26/17—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories in relation to the intake system
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
- F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
- F02M26/40—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with timing means in the recirculation passage, e.g. cyclically operating valves or regenerators; with arrangements involving pressure pulsations
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
- F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
- F02M26/42—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories having two or more EGR passages; EGR systems specially adapted for engines having two or more cylinders
- F02M26/44—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories having two or more EGR passages; EGR systems specially adapted for engines having two or more cylinders in which a main EGR passage is branched into multiple passages
-
- 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
- F02M35/10209—Fluid connections to the air intake system; their arrangement of pipes, valves or the like
- F02M35/10222—Exhaust gas recirculation [EGR]; Positive crankcase ventilation [PCV]; Additional air admission, lubricant or fuel vapour admission
-
- 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
- F02B29/00—Engines characterised by provision for charging or scavenging not provided for in groups F02B25/00, F02B27/00 or F02B33/00 - F02B39/00; Details thereof
- F02B29/04—Cooling of air intake supply
- F02B29/0406—Layout of the intake air cooling or coolant circuit
- F02B29/0437—Liquid cooled heat exchangers
-
- 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
- F02M26/02—EGR systems specially adapted for supercharged engines
- F02M26/04—EGR systems specially adapted for supercharged engines with a single turbocharger
- F02M26/05—High pressure loops, i.e. wherein recirculated exhaust gas is taken out from the exhaust system upstream of the turbine and reintroduced into the intake system downstream of the compressor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
- F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
- F02M26/22—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with coolers in the recirculation passage
- F02M26/23—Layout, e.g. schematics
- F02M26/28—Layout, e.g. schematics with liquid-cooled heat exchangers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
- F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
- F02M26/35—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with means for cleaning or treating the recirculated gases, e.g. catalysts, condensate traps, particle filters or heaters
-
- 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
- Y02T10/40—Engine management systems
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust-Gas Circulating Devices (AREA)
Abstract
Brennkraftmaschinensystem,
insbesondere in einem Kraftfahrzeug,
– mit einer Brennkraftmaschine
(2),
– mit
einer Frischgasanlage (3) zum Zuführen von Frischgas zur Brennkraftmaschine
(2),
– mit
einer Abgasanlage (4) zum Abführen
von Abgas von der Brennkraftmaschine (2),
– mit einer Abgasrückführanlage
(5) zum Entnehmen von Abgas aus der Abgasanlage (4) und zum Einleiten
des entnommenen Abgases in die Frischgasanlage (3),
– wobei
zumindest in einem Steuerabschnitt (22) der Frischgasanlage (3)
zumindest zwei parallel durchströmbare
Frischgaspfade (23, 24) ausgebildet sind,
– wobei in wenigstens zwei
solchen Frischgaspfaden (23, 24) jeweils ein Frischgasventil (25,
26) zum Steuern des durchströmbaren
Querschnitts des jeweiligen Frischgaspfads angeordnet ist.Internal combustion engine system, in particular in a motor vehicle,
With an internal combustion engine (2),
- With a fresh gas system (3) for supplying fresh gas to the internal combustion engine (2),
- With an exhaust system (4) for discharging exhaust gas from the internal combustion engine (2),
- With an exhaust gas recirculation system (5) for removing exhaust gas from the exhaust system (4) and for introducing the exhaust gas removed in the fresh gas system (3),
- Wherein at least in a control section (22) of the fresh gas system (3) at least two fresh gas paths (23, 24) can be flowed through in parallel,
- In each case a fresh gas valve (25, 26) is arranged for controlling the flow-through cross-section of the respective Frischgaspfads in at least two such fresh gas paths (23, 24).
Description
Die vorliegende Erfindung betrifft ein Brennkraftmaschinensystem, insbesondere in einem Kraftfahrzeug.The The present invention relates to an internal combustion engine system, in particular in a motor vehicle.
Ein derartiges Brennkraftmaschinensystem umfasst üblicherweise eine Brennkraftmaschine, zum Beispiel einen Dieselmotor oder einen Benzinmotor, eine Frischgasanlage zum Zuführen von Frischgas zur Brennkraftmaschine sowie eine Abgasanlage zum Abführen von Abgas von der Brennkraftmaschine. Zur Reduzierung der Schadstoffemissionen ist es üblich, eine Abgasrückführanlage vorzusehen, mit der Abgas aus der Abgasanlage entnehmbar und in die Frischgasanlage einleitbar ist. Um das rückzuführende Abgas von der Abgasanlage zur Frischgasanlage antreiben zu können, ist ein entsprechendes Druckgefälle erforderlich. Bei bestimmten Betriebszuständen der Brennkraftmaschine und insbesondere bei einer aufgeladenen Brennkraftmaschine ist die Druckdifferenz zwischen Abgasanlage und Frischgasanlage vergleichsweise klein, so dass es problematisch sein kann, die jeweils erwünschte Abgasrückführmenge zu realisieren.One Such internal combustion engine system usually includes an internal combustion engine, for For example, a diesel engine or a gasoline engine, a fresh gas system for feeding from fresh gas to the engine and an exhaust system to lead away exhaust gas from the internal combustion engine. To reduce pollutant emissions it is usual, an exhaust gas recirculation system provide, with the exhaust gas from the exhaust system removable and in the fresh gas system can be introduced. To the recirculating exhaust gas from the exhaust system to Be able to drive fresh gas system, is a corresponding pressure gradient required. In certain operating conditions of the internal combustion engine and in particular in a supercharged internal combustion engine is the Pressure difference between exhaust system and fresh gas system comparatively small, so that it can be problematic, the respective desired exhaust gas recirculation amount to realize.
Die vorliegende Erfindung beschäftigt sich mit dem Problem, für ein Brennkraftmaschinensystem der eingangs genannten Art eine verbesserte Ausführungsform anzugeben, die sich insbesondere durch eine Verbesserung der Abgasrückführung auszeichnet, und zwar vorzugsweise bei Brennkraftmaschinen mit vergleichsweise großen Volumenströmen.The present invention employs dealing with the problem, for an internal combustion engine system of the type mentioned in an improved embodiment which is characterized in particular by an improvement in exhaust gas recirculation, and preferably in internal combustion engines with comparatively huge Volume flows.
Erfindungsgemäß wird dieses Problem durch den Gegenstand des unabhängigen Anspruchs gelöst. Vorteilhafte Ausführungsformen sind Gegenstand der abhängigen Ansprüche.According to the invention this Problem solved by the subject matter of the independent claim. advantageous embodiments are the subject of the dependent Claims.
Die Erfindung beruht auf dem allgemeinen Gedanken, in der Frischgasanlage zumindest zwei parallel vom Frischgas durchströmbare Frischgaspfade auszubilden, die jeweils mit einem eigenen Frischgasventil steuerbar sind. Mit Hilfe derartiger Frischgasventile lässt sich der durchströmbare Querschnitt der Frischgasanlage gezielt variieren, was im Betrieb der Brennkraftmaschine z.B. dazu nutzbar ist, stromab der Frischgasventile einen Druckabfall zu erzeugen. Diese Druckreduzierung vergrößert die Druckdifferenz zwischen Abgasanlage und Frischgasanlage, was die Rückführung von Abgas verbessert. Von besonderer Bedeutung ist hierbei, dass zumindest zwei parallele Frischgaspfade vorgesehen sind, die jeweils mit einem eigenen Frischgasventil steuerbar sind. Der mit Hilfe des jeweiligen Frischgasventils zu steuernde Querschnitt kann dadurch vergleichsweise gering gewählt werden. Dies kann die Realisierung des jeweiligen Frischgasventils erheblich vereinfachen. Beispielsweise kann ein kleineres Ventilglied verwendet werden, das kleinere Trägheitsmomente besitzt. Gleichzeitig vereinfacht sich ein entsprechender Antrieb für das Ventilglied; ebenso reduziert sich der auftretende Verschleiß, während sich die Abdichtung des Ventilglieds innerhalb des jeweiligen Frischgaspfads vereinfacht. Durch diese Bauweise ist es somit insbesondere möglich, bei großvolumigen Brennkraftmaschinen, die einen vergleichsweise großen Volumenstrom an Frischgas benötigen, die Abgasrückführung mit Hilfe von Frischgasventilen in der Frischgasleitung zu steuern, wobei die hierzu erforderlichen Frischgasventile vergleichsweise preiswert realisierbar sind. Größere Brennkraftmaschinen kommen beispielsweise bei Nutzfahrzeugen zur Anwendung.The Invention is based on the general idea, in the fresh gas system form at least two fresh gas paths through which fresh gas can flow in parallel, each controllable with its own fresh gas valve. With Help such Frischgasventile can be the durchströmbare cross section specifically vary the fresh gas system, resulting in the operation of the internal combustion engine e.g. can be used, downstream of the fresh gas valves to a pressure drop produce. This pressure reduction increases the pressure difference between Exhaust system and fresh gas system, which improves the return of exhaust gas. Of particular importance here is that at least two parallel Fresh gas paths are provided, each controllable with its own fresh gas valve are. The with the help of the respective fresh gas valve to be controlled Cross-section can thus be chosen comparatively small. This can be the realization of the respective fresh gas valve considerably simplify. For example, a smaller valve member may be used which has smaller moments of inertia. At the same time, a corresponding drive for the valve member is simplified; likewise, the occurring wear reduces, while the sealing of the Valve member simplified within the respective fresh gas path. Due to this construction, it is thus possible in particular for large-volume Internal combustion engines, which have a comparatively large volume flow need fresh gas, the exhaust gas recirculation with Help to control fresh gas valves in the fresh gas line, wherein the required fresh gas valves comparatively inexpensive are feasible. Larger internal combustion engines For example, commercial vehicles are used.
Besonders vorteilhaft ist eine Ausführungsform, bei der eine Ventilsteuerung vorgesehen ist, welche die Frischgasventile in Abhängigkeit des aktuellen Betriebszustands der Brennkraftmaschine betätigt, um eine jeweils geeignete Abgasrückführmenge oder Abgasrückführrate einzustellen. Dabei kann diese Ventilsteuerung vorzugsweise so ausgestaltet sein, dass sie bei kleiner Last und/oder bei kleiner Drehzahl das eine Frischgasventil permanent in dessen Schließstellung verstellt hält und das andere Frischgasventil zum Einstellen der jeweiligen Abgasrückführmenge ansteuert. Bei mittlerer Last und/oder bei mittlerer Drehzahl kann vorgesehen sein, dass die Ventilsteuerung beide Frischgasventile zum Einstellen der jeweiligen Abgasrückführmenge synchron oder asynchron ansteuert. Ferner kann vorgesehen sein, dass die Ventilsteuerung bei großer Last und/oder bei großer Drehzahl das eine Frischgasventil permanent in dessen Offenstellung verstellt hält und das andere Frischgasventil zum Einstellen der jeweiligen Abgasrückführmenge ansteuert. Durch die Möglichkeit, die wenigstens zwei Frischgasventile unabhängig voneinander ansteuern zu können, lässt sich die Abgasrückführmenge besser beziehungsweise genauer an den aktuellen Bedarf anpassen, was sich auf die Abgaswerte des Brennkraftmaschinensystems positiv auswirkt.Especially an embodiment is advantageous in which a valve control is provided which the fresh gas valves dependent on the current operating state of the internal combustion engine is actuated to a respective suitable exhaust gas recirculation amount or to set the exhaust gas recirculation rate. In this case, this valve control can preferably be designed such that at low load and / or at low speed the one Fresh gas valve permanently adjusted in its closed position holds and the other fresh gas valve for setting the respective exhaust gas recirculation amount controls. At medium load and / or at medium speed can be provided that the valve control both fresh gas valves for adjusting the respective exhaust gas recirculation amount synchronously or asynchronously controls. Furthermore, it can be provided that the valve control at big Load and / or at large Speed that keeps a fresh gas valve permanently adjusted in its open position and the other fresh gas valve for setting the respective exhaust gas recirculation amount controls. By the possibility the at least two fresh gas valves control independently of each other to be able to let yourself the exhaust gas recirculation amount better or more precisely adapted to current needs, which has a positive effect on the exhaust emissions of the internal combustion engine system effect.
Bei einer weiteren wichtigen Ausführungsform kann vorgesehen sein, dass die Abgasrückführanlage über wenigstens zwei verschiedene Einleitstellen an die Frischgasanlage angeschlossen ist, wobei diese Einleitstellen dann so positioniert sind, dass Druckschwingungen, die mit dem einen Frischgasventil erzeugbar sind, durch die eine Einleitstelle eine größere Abgasrückführmenge erzeugen als durch die andere Einleitstelle, während Druckschwingungen, die mit dem anderen Frischgasventil erzeugbar sind, durch die andere Einleitstelle eine größere Abgasrückführmenge erzeugen als durch die eine Einleitstelle. Bei dieser Bauweise ergeben sich zusätzliche Möglichkeiten zur Variierung der Abgasrückführmenge. Insbesondere kann gemäß einer Ausführungsform vorgesehen sein, dass zum Einstellen kleiner Abgasrückführmengen das eine Frischgasventil zum Erzeugen von Druckschwingungen angesteuert wird, während das andere Frischgasventil permanent in der Schließstellung oder in der Offenstellung oder in einer anderen Stellung verstellt gehalten wird. Zur Realisierung von mittleren Abgasrückführmengen kann das eine Frischgasventil permanent in der Schließstellung oder in der Offenstellung oder in einer anderen Stel lung verstellt gehalten werden, während das andere Frischgasventil zum Erzeugen von Druckschwingungen angesteuert wird. Zur Realisierung größerer Abgasrückführmengen kann dann vorgesehen sein, dass beide Frischgasventile synchron zum Erzeugen von Druckschwingungen angesteuert werden. Bei dieser besonderen Betriebsweise lassen sich die unterschiedlichen Positionierungen der Einleitstellen gezielt dazu nutzen, durch Ansteuerung der verschiedenen Frischgasventile unterschiedliche Abgasrückführmengen zu erzeugen. Bemerkenswert ist dabei, dass die Einstellung unterschiedlicher Abgasrückführmengen vergleichsweise preiswert realisierbar ist, da die hierfür benötigte Hardware, nämlich zumindest eine weitere Einleitstelle vergleichsweise preiswert ist.In a further important embodiment it can be provided that the exhaust gas recirculation system is connected to the fresh gas system via at least two different points of introduction, wherein these inlet points are then positioned so that pressure oscillations, which can be generated with the one fresh gas valve, produce a larger exhaust gas recirculation amount through the one inlet point as by the other point of introduction, while pressure vibrations that can be generated with the other fresh gas valve, produce by the other point of introduction a larger exhaust gas recirculation amount than through the one discharge point. In this construction, additional possibilities for varying the exhaust gas recirculation amount. In particular, according to one embodiment, it may be provided that for provide small amounts of exhaust gas recirculation a fresh gas valve is driven to generate pressure oscillations, while the other fresh gas valve is kept permanently adjusted in the closed position or in the open position or in another position. To realize average exhaust gas recirculation amounts, the one fresh gas valve can be kept permanently adjusted in the closed position or in the open position or in another Stel, while the other fresh gas valve is driven to generate pressure oscillations. To realize larger exhaust gas recirculation amounts can then be provided that both fresh gas valves are controlled synchronously to generate pressure oscillations. In this particular mode of operation, the different positions of the discharge points can be used specifically to generate different amounts of exhaust gas recirculation by controlling the various fresh gas valves. It is noteworthy that the setting of different exhaust gas recirculation amounts can be realized comparatively inexpensively, since the hardware required for this purpose, namely at least one further point of introduction, is comparatively inexpensive.
Weitere wichtige Merkmale und Vorteile der Erfindung ergeben sich aus den Unteransprüchen, aus den Zeichnungen und aus der zugehörigen Figurenbeschreibung anhand der Zeichnungen.Further important features and advantages of the invention will become apparent from the Dependent claims, from the drawings and from the associated description of the figures 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 it is understood that the above and the following yet to be explained features not only in the specified combination, but also in other combinations or alone, without to leave 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 Bauteile beziehen.preferred embodiments The invention are illustrated in the drawings and in the following description explains where like reference numerals refer to the same or similar or functionally identical components relate.
Es zeigen, jeweils schematisch,It show, in each case schematically,
Entsprechend
Die
Frischgasanlage
Die
Abgasanlage
Die
Abgasrückführanlage
Die
Frischgasanlage
Zur
Betätigung
der Frischgasventile
Antriebskraft
für die
Rückführung von
Abgas von der Abgasanlage
Bei
einer vorteilhaften Ausführungsform kann
vorgesehen sein, die Ventilsteuerung
Bei
der hier gezeigten Ausführungsform
sind die Einleitstellen
Besonders
vorteilhaft ist eine Ausführungsform,
bei welcher die Frischgasventile
Die
Frischgasventile
Die
Frischgasventile
Alternativ
kann es sich bei den Frischgasventilen
Ein
Verfahren zum Betreiben des Brennkraftmaschinensystems
Zur
Realisierung der jeweiligen Abgasrückführmenge bei einem Betriebszustand
der Brennkraftmaschine
Zusätzlich oder
alternativ kann vorgesehen sein, dass die Ventilsteuerung
Entsprechend
Durch
die gezielte Positionierung der Einleitstellen
Im
vorliegenden Zusammenhang bedeuten die Begriffe „klein", „mittel" und „groß" keine absoluten
Größen für die Abgasrückführmenge
beziehungsweise für
die Last und/oder Drehzahl der Brennkraftmaschine
Grundsätzlich kann
die Ventilsteuerung
Claims (11)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE202007007117U DE202007007117U1 (en) | 2007-02-23 | 2007-02-23 | Internal combustion engine |
DE102007025178.7A DE102007025178B4 (en) | 2007-02-23 | 2007-05-29 | Internal combustion engine system with external exhaust gas recirculation |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102007009353A DE102007009353A1 (en) | 2007-02-23 | 2007-02-23 | Engine system |
DE202007007117U DE202007007117U1 (en) | 2007-02-23 | 2007-02-23 | Internal combustion engine |
Publications (1)
Publication Number | Publication Date |
---|---|
DE202007007117U1 true DE202007007117U1 (en) | 2007-10-25 |
Family
ID=38622654
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE202007007117U Expired - Lifetime DE202007007117U1 (en) | 2007-02-23 | 2007-02-23 | Internal combustion engine |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008063604A1 (en) * | 2008-12-18 | 2010-06-24 | Mahle International Gmbh | Valve device and internal combustion engine system |
DE102010009287A1 (en) | 2010-02-25 | 2011-08-25 | MAN Truck & Bus AG, 80995 | Method and device for operating an internal combustion engine, in particular an internal combustion engine of a motor vehicle |
DE102014211015A1 (en) | 2014-06-10 | 2015-12-17 | Bayerische Motoren Werke Aktiengesellschaft | Internal combustion engine with additional charge exchange valve |
-
2007
- 2007-02-23 DE DE202007007117U patent/DE202007007117U1/en not_active Expired - Lifetime
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008063604A1 (en) * | 2008-12-18 | 2010-06-24 | Mahle International Gmbh | Valve device and internal combustion engine system |
DE102010009287A1 (en) | 2010-02-25 | 2011-08-25 | MAN Truck & Bus AG, 80995 | Method and device for operating an internal combustion engine, in particular an internal combustion engine of a motor vehicle |
EP2362083A1 (en) | 2010-02-25 | 2011-08-31 | MAN Truck & Bus AG | Method and device for operating a combustion engine of a motor vehicle |
US8931462B2 (en) | 2010-02-25 | 2015-01-13 | Man Truck & Bus Ag | EGR system for an internal combustion engine that feeds exhaust gas independent of intake air |
DE102014211015A1 (en) | 2014-06-10 | 2015-12-17 | Bayerische Motoren Werke Aktiengesellschaft | Internal combustion engine with additional charge exchange valve |
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