DE102006027865A1 - Tubocharged-internal combustion engine e.g. drive motor, for use in e.g. passenger car, has additional device with external compressor driven by engine, and pressure reservoir is connected with external compressor over pressure pipe - Google Patents
Tubocharged-internal combustion engine e.g. drive motor, for use in e.g. passenger car, has additional device with external compressor driven by engine, and pressure reservoir is connected with external compressor over pressure pipe Download PDFInfo
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- DE102006027865A1 DE102006027865A1 DE102006027865A DE102006027865A DE102006027865A1 DE 102006027865 A1 DE102006027865 A1 DE 102006027865A1 DE 102006027865 A DE102006027865 A DE 102006027865A DE 102006027865 A DE102006027865 A DE 102006027865A DE 102006027865 A1 DE102006027865 A1 DE 102006027865A1
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- Prior art keywords
- internal combustion
- combustion engine
- external compressor
- compressed air
- exhaust gas
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Classifications
-
- 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
- F02B21/00—Engines characterised by air-storage chambers
-
- 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
- F02B37/02—Gas passages between engine outlet and pump drive, e.g. reservoirs
-
- 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
- F02B37/04—Engines with exhaust drive and other drive of pumps, e.g. with exhaust-driven pump and mechanically-driven second pump
-
- 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
- F02B37/20—Control of the pumps by increasing exhaust energy, e.g. using combustion chamber by after-burning
-
- 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
- F02B39/00—Component parts, details, or accessories relating to, driven charging or scavenging pumps, not provided for in groups F02B33/00 - F02B37/00
- F02B39/02—Drives of pumps; Varying pump drive gear ratio
- F02B39/04—Mechanical drives; Variable-gear-ratio drives
-
- 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
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- 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
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Supercharger (AREA)
Abstract
Description
Die Erfindung betrifft einen Verbrennungsmotor, beispielsweise einen Antriebsmotor eines Kraftfahrzeuges, mit mindestens einem Abgasturbolader zur permanenten Erhöhung des Ladedrucks und mit einer Zusatzeinrichtung für die Entnahme, Speicherung und Zufuhr von Energie zur zusätzlichen Erhöhung des Ladedrucks. Die Erfindung betrifft des Weiteren ein Verfahren zur Ladedruckregelung eines derartigen Verbrennungsmotors.The The invention relates to an internal combustion engine, for example a Drive motor of a motor vehicle, with at least one exhaust gas turbocharger for permanent increase the boost pressure and with an accessory for the removal, storage and supply of energy to the additional increase the boost pressure. The invention further relates to a method for boost pressure control of such an internal combustion engine.
Verbrennungsmotoren, die zur Erhöhung ihres Ladedrucks mit mindestens einem Abgasturbolader versehen sind, kommen sowohl bei Personenkraftwagen als auch bei Lastkraftwagen zur Anwendung. Weitere Anwendungsbereiche turboaufgeladener Verbrennungsmotoren sind Flugmotoren, Schiffsmotoren, Lokomotivantriebe und stationäre Anlagen, wie z.B. Generatorstationen und Blockheizkraftwerke.Internal combustion engines, which to increase their charge pressure are provided with at least one exhaust gas turbocharger, come in both passenger cars and trucks for use. Further applications of turbocharged internal combustion engines are aircraft engines, marine engines, locomotive propulsion and stationary equipment, such as e.g. Generator stations and combined heat and power plants.
Ein Abgasturbolader besteht im Wesentlichen aus einer im Abgastrakt des Verbrennungsmotors angeordneten Turbine und einem im Ansaugtrakt des Verbrennungsmotors angeordneten Verdichter, die über eine Triebwelle miteinander verbunden sind. Die Turbine wird durch den Abgasstrom des Verbrennungsmotors angetrieben und treibt ihrerseits über die Triebwelle den Verdichter an, durch den die Verbrennungsluft des Verbrennungsmotors komprimiert und somit der Ladedruck des Verbrennungsmotors erhöht wird. Dies führt zu einer höheren Füllung und damit zu einer Leistungssteigerung des Verbrennungsmotors. Daher kann die Leistung eines vorhandenen Verbrennungsmotors mittels eines Abgasturboladers auf relativ einfache Art und Weise gesteigert werden. Ebenso können die Schadstoffemissionen eines Verbrennungsmotors einer bestimmten Leistungsklasse durch die Verwendung eines kleine ren, beziehungsweise hubraumschwächeren Basismotors in Verbindung mit einem Abgasturbolader verringert werden.One Exhaust gas turbocharger consists essentially of one in the exhaust system of the internal combustion engine arranged turbine and one in the intake tract of the Internal combustion engine arranged compressor, which via a drive shaft with each other are connected. The turbine is controlled by the exhaust gas flow of the internal combustion engine powered and in turn drives the compressor via the drive shaft on, through which the combustion air of the internal combustion engine is compressed and Thus, the boost pressure of the engine is increased. This leads to a higher filling and thus to an increase in performance of the internal combustion engine. Therefore can the performance of an existing internal combustion engine by means of a Exhaust gas turbocharger be increased in a relatively simple manner. Likewise the pollutant emissions of an internal combustion engine of a certain Performance class by using a small ren, respectively displacement weaker Base engine can be reduced in conjunction with an exhaust gas turbocharger.
Bei der Anwendung als Antriebsmotor eines Kraftfahrzeugs wirken sich häufige Änderungen der Motordrehzahl jedoch negativ auf das Betriebsverhalten eines turboaufgeladenen Verbrennungsmotors aus. Nachteilig wirkt sich besonders aus, dass bei einer vom Fahrer abgeforderten Erhöhung der Motorleistung der Verbrennungsmotor bei niedriger Motordrehzahl zunächst beschleunigt werden muss, damit durch einen erhöhten Abgasstrom der Verdichter des Abgasturboladers von der Turbine mit einer soweit erhöhten Drehzahl angetrieben wird, dass ein erhöhter Ladedruck erzeugt wird und somit die gewünschte Erhöhung der Motorleistung eintritt. Dieser Funktionszusammenhang äußert sich insbesondere bei Anfahr- und Beschleunigungsvorgängen eines derartigen Kraftfahrzeugs in einem verzögerten Ansprechverhalten und einer relativ geringen Durchzugskraft des Verbrennungsmotors, welches allgemein als Turboloch bezeichnet wird.at the application as a drive motor of a motor vehicle affect frequent changes However, the engine speed negatively on the performance of a turbocharged internal combustion engine. The disadvantage is especially from that requested by the driver increasing the engine power the internal combustion engine at low engine speed initially accelerated must be, thus by an increased exhaust gas flow of the compressor the exhaust gas turbocharger from the turbine with a so far increased speed that is an increased Boost pressure is generated and thus enters the desired increase in engine performance. This functional context is expressed in particular during start-up and acceleration processes of such a motor vehicle in a delayed Responsiveness and a relatively low pulling power of Internal combustion engine, which is commonly referred to as turbo lag.
Dieser Effekt kann sich auch bei Zughochschaltungen negativ auswirken, wenn die Drehzahl des Verbrennungsmotors während einer Schaltung zur Anpassung an die Anschlussdrehzahl soweit absinkt, dass nach Abschluss der Schaltung der Ladedruck aufgrund einer abgesunkenen Drehzahl des Verdichters des Abgasturboladers derart niedrig ist, dass am Ende der Schaltung eine deutlich verringerte Durchzugskraft des Verbrennungsmotors und somit ein geringeres Beschleunigungsvermögen des Kraftfahrzeugs zur Verfügung steht.This Effect can also have a negative effect on upshifting, when the speed of the internal combustion engine during a shift for adjustment at the connection speed falls so far that after completion of the Switching the boost pressure due to a reduced speed of the compressor the exhaust gas turbocharger is so low that at the end of the circuit a significantly reduced pulling power of the internal combustion engine and thus a lower acceleration capacity of the motor vehicle disposal stands.
Zur Vermeidung oder zumindest zur Abschwächung des unerwünschten Turbolochs sind in der Vergangenheit verschiedene Lösungen vorgeschlagen und teilweise auch realisiert worden. Unter anderem sind hierzu unterschiedliche Zusatzeinrichtungen vorgeschlagen worden, mittels denen jeweils dem Verbrennungsmotor in bestimmten Betriebsphasen Energie entzogen, gespeichert und zur Erhöhung des Ladedruckes wieder zugeführt werden kann.to Avoidance or at least weakening of the unwanted Turbo holes have been proposed in the past various solutions and partly realized. Among others, this is different options have been proposed, by means of each of which the internal combustion engine in certain operating phases Energy deprived, stored and to increase the boost again supplied can be.
Beispielsweise
ist aus der
In
der
Andere
bekannte Zusatzeinrichtungen weisen dagegen einen zusätzlichen
Verdichter auf, der in Strömungsrichtung
vor oder nach dem Verdichter des Abgasturboladers in dem Ansaugtrakt
des Verbrennungsmotors angeordnet ist. In einer bekannten Ausführungsform
gemäß der
Eine ähnliche Zusatzeinrichtung, die im Wesentlichen aus einem zusätzlichen Verdichter und einem diesen antreibenden Elektromotor besteht, ist als so genannter „eBooster" von Borg Warner Turbo Systems aus einem Artikel in der Zeitschrift Automotive Engineer; Heft Juli/August 2005, Seite 38-40 bekannt. Nachteilig an diesen bekannten Zusatzeinrichtungen ist das Erfordernis eines entsprechend verstärkten elektrischen Bordnetzes, insbesondere eines leistungsstärkeren Generators und einer größeren Batterie, zur Erzeugung und Speicherung der erforderlichen elektrischen Energie zum Antrieb des zusätzlichen Verdichters über den Elektromotor.A similar Additional equipment consisting essentially of an additional Compressor and an electric motor driving this is as so-called "eBooster" by Borg Warner Turbo Systems from an article in the journal Automotive Engineer; Issue July / August 2005, page 38-40 known. A disadvantage of this known ancillary equipment is the requirement of a corresponding increased electrical vehicle electrical system, in particular a more powerful generator and a larger battery, for generating and storing the required electrical energy to drive the additional Compressor over the electric motor.
Eine interessante Alternative dazu stellt daher die ebenfalls in dem betreffenden Artikel der Zeitschrift Automotive Engineer vorgestellte Zusatzeinrichtung namens „SuperGen" der Firmen integral Powertrain und DriveTec dar, bei welcher der zusätzliche Verdichter über ein Traktionsgetriebe mit verstellbarer Übersetzung von der Kurbelwelle des Verbrennungsmotors antreibbar ist.A interesting alternative is therefore also in the featured article in the journal Automotive Engineer Additional equipment called "SuperGen" of the companies integral Powertrain and DriveTec, in which the additional compressor on a Traction drive with adjustable ratio of the crankshaft of the internal combustion engine is drivable.
Im
Unterschied zu den bisher genannten Zusatzeinrichtungen wird in
der
Vor diesem Hintergrund liegt der vorliegenden Erfindung die Aufgabe zugrunde, einen turboaufgeladenen Verbrennungsmotor mit einer Zusatzeinrichtung der eingangs genannten Art vorzuschlagen, die bei einfachem und kostengünstigen Aufbau problemlos integrierbar ist, und mittels der die Betriebseigenschaften des Verbrennungsmotors signifikant verbessert werden können. Des Weiteren soll ein Verfahren zur Ladedruckregelung eines derartigen Verbrennungsmotors angegeben werden.In front In this background, the present invention has the object basis, a turbocharged internal combustion engine with an additional device to propose the type mentioned, the simple and inexpensive Structure is easily integrated, and by means of the operating characteristics of the internal combustion engine can be significantly improved. Of Furthermore, a method for boost pressure control of such an internal combustion engine be specified.
Die Lösung der Aufgabe den Verbrennungsmotor betreffend besteht in Verbindung mit den Merkmalen des Oberbegriff des Anspruchs 1 darin, dass die Zusatzeinrichtung einen von dem Verbrennungsmotor antreibbaren externen Verdichter, einen über eine Druckleitung mit dem externen Verdichter verbundenen Druckspeicher und ein über eine mit einem Steuerventil versehene Zusatzluftleitung mit dem Druckspeicher verbundenes Einströmelement um fasst, wobei das Einströmelement im Abgastrakt des Verbrennungsmotors in Strömungsrichtung axial vor oder auf Höhe der Turbine des Abgasturboladers angeordnet ist.The solution the task relating to the internal combustion engine is related with the features of the preamble of claim 1 in that the Additional device a driven by the internal combustion engine external Compressor, one over one Pressure line with the external compressor connected pressure accumulator and an over a provided with a control valve additional air line with the pressure accumulator connected inflow to summarizes, wherein the inflow in the exhaust tract of the internal combustion engine in the flow direction axially before or at height the turbine of the exhaust gas turbocharger is arranged.
Durch die Erzeugung von Druckluft mittels des externen, also unabhängig von dem Abgasturbolader angeordneten und betreibbaren Verdichters kann dem Verbrennungsmotor permanent oder intermittierend kinetische Energie entzogen und als Druckluft in dem Druckspeicher gespeichert werden. Durch die über das Steuerventil steuerbare Zufuhr der Druckluft in den Abgastrakt vor oder auf Höhe der Turbine des Abgasturboladers kann die Turbine bedarfsweise mit einem erhöhten Gasstrom bestehend aus dem Abgasstrom des Verbrennungsmotors und der zusätzlich eingespeisten Druckluft beaufschlagt werden, welches über den entsprechend beschleunigten Antrieb des Verdichters des Abgasturboladers zu einem erhöhten Ladedruck und demzufolge zu einer erhöhten Leistungsabgabe sowie zu einem verbesserten Ansprechverhalten des Verbrennungsmotors führt.By generating compressed air by means of the external, that is arranged and operable independently of the exhaust gas turbocharger compressor, the internal combustion engine permanently or intermittently kinetic energy withdrawn and stored as compressed air in the pressure accumulator. By controllable via the control valve supply of compressed air into the exhaust system before or at the height of the turbine of the exhaust gas turbocharger, the turbine can if necessary with an increased gas flow consisting of the exhaust stream of the engine and the additionally supplied compressed air is acted upon, which leads via the correspondingly accelerated drive of the compressor of the exhaust gas turbocharger to an increased boost pressure and consequently to an increased power output and to an improved response of the internal combustion engine.
Hierdurch kann eine als Turboloch bekannte Durchzugsschwäche des Verbrennungsmotors bei niedrigen Drehzahlen wirksam verhindert werden, wobei im Vergleich zu einer Einspeisung von Druckluft in den Ansaugtrakt des Verbrennungsmotors eine Störung der Gleichförmigkeit der einströmenden Verbrennungsluft sowie beengte Platzverhältnisse im Bereich des Ansaugtrakts vermieden werden. Als positiver Nebeneffekt werden durch die Einspeisung der Druckluft in den Abgastrakt auch die Abgase des Verbrennungsmotors gekühlt und somit die thermische Belastung des Abgasturboladers und benachbart angeordneter Bauteile reduziert.hereby can a known as turbo lag draft weakness of the engine being effectively prevented at low speeds, being compared to a supply of compressed air into the intake tract of the internal combustion engine a disorder the uniformity the inflowing Combustion air and tight space in the area of the intake tract be avoided. As a positive side effect are by the feed the compressed air into the exhaust tract and the exhaust gases of the internal combustion engine chilled and thus the thermal load of the exhaust gas turbocharger and adjacent arranged components reduced.
Zur Erzielung optimaler Strömungsverhältnisse und demzufolge größtmöglicher Wirkung der eingespeisten Druckluft ist das Einströmelement bei einer Anordnung vor der Turbine des Abgasturboladers bevorzugt derart ausgebildet, dass die zugeführte Druckluftluft im Wesentlichen in Strömungsrich tung axial-tangential in den Abgastrakt einströmt. Dagegen ist das Einströmelement bei einer Anordnung auf Höhe der Turbine des Abgasturboladers zweckmäßig derart ausgebildet, dass die zugeführte Druckluft im Wesentlichen in Drehrichtung der Turbine umfangsseitig-tangential in den Abgastrakt bzw. das Turbinengehäuse des Abgasturboladers einströmt.to Achieving optimal flow conditions and consequently the greatest possible The effect of the injected compressed air is the inflow element in an arrangement in front of the turbine of the exhaust gas turbocharger preferred designed such that the supplied compressed air substantially in the flow direction flows axially-tangentially into the exhaust tract. In contrast, the inflow element in an arrangement at height the turbine of the exhaust gas turbocharger suitably designed such that the supplied compressed air essentially circumferentially-tangential in the direction of rotation of the turbine flows into the exhaust system or the turbine housing of the exhaust gas turbocharger.
Bei einer vorhandenen Druckluftanlage, die z.B. bei schwereren Nutzfahrzeugen für die Betätigung der Betriebsbremsen erforderlich ist, werden zweckmäßig der externe Verdichter, die Druckleitung und der Druckspeicher der vorhandenen Druckluftanlage durch die erfindungsgemäße Zusatzeinrichtung genutzt, um Kosten und Bauraum einzusparen.at an existing compressed air system, e.g. for heavier commercial vehicles for the activity the service brakes is required, will be appropriate external compressors, the pressure line and the accumulator of existing ones Compressed air system used by the additional device according to the invention, to save costs and installation space.
In diesem Fall weist die Zusatzeinrichtung jedoch vorteilhaft einen zusätzlichen zweiten Druckspeicher auf, der über ein Überdruckventil an den ersten Druckspeicher der vorhandenen Druckluftanlage angeschlossen ist, und der anstelle des ersten Druckspeichers über die mit dem Steuerventil versehene Zusatzluftleitung mit dem Einströmelement verbunden ist. Hierdurch ist die Versorgung der Zusatzeinrichtung mit Druckluft weitgehend unabhängig von dem Betrieb der vorhandenen Druckluftanlage und erfordert keine zusätzliche Antriebsleistung des Verbrennungsmotors.In However, in this case, the additional device advantageously has a additional second accumulator on, the over a pressure relief valve connected to the first accumulator of the existing compressed air system is, and in place of the first accumulator via the with the control valve provided additional air line is connected to the inflow element. hereby the supply of the auxiliary device with compressed air is largely independently from the operation of the existing compressed air system and requires no additional Drive power of the internal combustion engine.
Bei einer eigenständigen Ausbildung der Zusatzeinrichtung steht der externe Verdichter bevorzugt über eine steuerbare Kupplung antriebstechnisch mit der Antriebswelle des Verbrennungsmotors in Verbindung, so dass dem Verbrennungsmotor durch ein Schließen der Kupplung nur in dafür günstigen Betriebsphasen durch den Antrieb des externen Verdichters Energie entzogen werden kann, und der Verbrennungsmotor in ungünstigen Betriebsphasen durch das Öffnen der Kupplung entlastet werden kann.at an independent one Forming the attachment is the external compressor preferably via a controllable coupling drive technology with the drive shaft of the Combustion engine in conjunction, allowing the internal combustion engine through lock in the clutch only in therefor Great Operating phases by driving the external compressor energy can be withdrawn, and the internal combustion engine in unfavorable Operating phases by opening the coupling can be relieved.
Zusätzlich zu der Verbindung über die Druckleitung, den Druckspeicher und die erste Zusatzluftleitung kann der externe Verdichter auch über eine mit einem Steuerventil versehene zweite Zusatzluftleitung unmittelbar mit dem Einströmelement verbunden sein, da sich hierdurch Betriebsvorteile bei der kurzzeitigen Erzeugung und Einspeisung von Druckluft in den Abgastrakt ergeben.In addition to the connection over the pressure line, the accumulator and the first additional air line The external compressor can also have one with a control valve provided second additional air line directly to the inflow be connected, as this has operational advantages in the short-term Generate and feed compressed air into the exhaust system.
Das erfindungsgemäße Verfahren zur Ladedruckregelung sieht in Verbindung mit den Merkmalen des Oberbegriffs von Anspruch 8 vor, dass dem Verbrennungsmotor durch den Antrieb eines externen Verdichters zur Erzeugung von Druckluft Energie entzogen wird, dass die Druckluft zur Speicherung dieser Energie in einen Druckspeicher eingeleitet wird, und dass die Energie dem Verbrennungsmotor durch die Einleitung der Druckluft über ein Einströmelement in den Abgastrakt in Strömungsrichtung axial vor oder auf Höhe der Turbine des Abgasturboladers zur Erhöhung des Ladedrucks wieder zugeführt wird.The inventive method for boost pressure control looks in conjunction with the characteristics of the The preamble of claim 8, that the internal combustion engine through the drive of an external compressor to generate compressed air Energy is extracted from the compressed air used to store this Energy is introduced into a pressure accumulator, and that energy the internal combustion engine by the introduction of compressed air on a inflow element in the exhaust tract in the flow direction axially before or at height the turbine of the exhaust gas turbocharger to increase the boost pressure again supplied becomes.
Hierbei ist vorgesehen, dass dem Verbrennungsmotor die Energievorwiegend in Betriebsphasen mit überschüssiger Energie, wie Brems- und Ausrollphasen, durch das Schließen einer den externen Verdichter mit der Antriebswelle des Verbrennungsmotors verbindenden Kupplung entzogen wird, und vorwiegend in Betriebsphasen mit erhöhtem Leistungsbedarf, wie Anfahr- und Beschleunigungsphasen, durch das Öffnen eines in einer den Druckspeicher mit dem Einströmelement verbindenden Zusatzluftleitung angeordneten Steuerventils wieder zugeführt wird.in this connection It is envisaged that the combustion engine's energy predominantly in operating phases with excess energy, such as braking and coasting phases, by closing an external compressor Coupling with the drive shaft of the internal combustion engine withdrawn, and mainly in periods of increased power consumption, as start-up and Acceleration phases, by opening one in a pressure accumulator with the inflow element connecting additional air line arranged control valve again supplied becomes.
Bei Zughochschaltungen ist vorteilhaft vorgesehen, dass die Drehzahlanpassung des Verbrennungsmotors, also das Abbremsen des Verbrennungsmotors, durch das Schließen der Kupplung zumindest unterstützt wird, und dass die von dem externen Verdichter dabei erzeugte Druckluft zur Erhöhung der Durchzugskraft des Verbrennungsmotors durch das Öffnen eines in einer den externen Verdichter unmittelbar mit dem Einströmelement verbindenden zweiten Zusatzluftleitung angeordneten Steuerventils auf dem kürzesten Weg in den Abgastrakt eingeleitet wird. Hierdurch werden ein Absinken der Drehzahl des Abgasturboladers während der Schaltung und ein demzufolge verringertes Durchzugsvermögen des Verbrennungsmotors nach der Schaltung wirksam verhindert.In Zughochschaltungen is advantageously provided that the speed adjustment of the engine, so the braking of the engine is at least supported by the closing of the clutch, and that the compressed air generated by the external compressor to increase the pulling power of the engine by opening a in one external compressor directly connected to the inflow element second auxiliary air line arranged control valve is introduced on the shortest path in the exhaust system. As a result, a decrease in the speed of the exhaust gas turbocharger during the circuit and a consequently reduced throughput of the internal combustion engine after the Circuit effectively prevented.
Bei einem extrem hohen Leistungsbedarf kann sogar gleichzeitig Druck luft unmittelbar von dem externen Verdichter als auch von dem Druckspeicher in den Abgastrakt vor dem Abgasturbolader eingeleitet werden, wozu die Kupplung zum Antrieb des externen Verdichters geschlossen wird und die Steuerventile beider Zusatzluftleitungen zur Einspeisung der Druckluft aus dem externen Verdichter und aus dem Druckspeicher in den Abgastrakt geöffnet werden.at an extremely high power requirement can even pressure at the same time air directly from the external compressor as well as from the accumulator be introduced into the exhaust system in front of the exhaust gas turbocharger, including the clutch is closed to drive the external compressor and the control valves of both additional air lines for feeding the compressed air from the external compressor and from the accumulator be opened in the exhaust tract.
Zur Verdeutlichung der Erfindung ist der Beschreibung eine Zeichnung mit Ausführungsbeispielen beigefügt.to Clarification of the invention, the description is a drawing with exemplary embodiments attached.
In diesen zeigt:In this shows:
Ein
als Kolbenmotor ausgebildeter Verbrennungsmotor
Eine
Zusatzeinrichtung
Durch
den Antrieb des externen Verdichters
In
der ersten Ausführungsform
der Zusatzeinrichtung
In
der zweiten Ausführungsform
der Zusatzeinrichtung
Zusätzlich zu
der ersten Zusatzluftleitung
Bei
besonders hohem Leistungsbedarf ist es bei dieser Ausführungsform
auch möglich,
zur Erzeugung einer erhöhten
Antriebsleistung des Verbrennungsmotors
- 11
- Verbrennungsmotorinternal combustion engine
- 22
- Ansaugtraktintake system
- 33
- Abgastraktexhaust tract
- 44
- Luftfilterair filter
- 55
- LadeluftkühlerIntercooler
- 66
- Abgasturboladerturbocharger
- 77
- Turbineturbine
- 88th
- Verdichtercompressor
- 99
- Triebwelledrive shaft
- 1010
- Zusatzeinrichtungaccessory
- 10'10 '
- Zusatzeinrichtungaccessory
- 1111
- (externer) Verdichter(External) compressor
- 1212
- Druckleitungpressure line
- 1313
- Rückschlagventilcheck valve
- 1414
- (erster) Druckspeicher(First) accumulator
- 14'14 '
- (zweiter) Druckspeicher(Second) accumulator
- 1515
- (erstes) Steuerventil(First) control valve
- 1616
- (erste) Zusatzluftleitung(first) Additional air line
- 1717
- Einströmelementinflow element
- 1818
- DruckluftanlageCompressed air system
- 1919
- Versorgungsleitungsupply line
- 2020
- ÜberdruckventilPressure relief valve
- 2121
- Kupplungclutch
- 2222
- (zweite) Zusatzluftleitung(second) Additional air line
- 2323
- (zweites) Steuerventil(Second) control valve
Claims (11)
Priority Applications (1)
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DE102006027865A DE102006027865A1 (en) | 2006-06-16 | 2006-06-16 | Tubocharged-internal combustion engine e.g. drive motor, for use in e.g. passenger car, has additional device with external compressor driven by engine, and pressure reservoir is connected with external compressor over pressure pipe |
Applications Claiming Priority (1)
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DE102006027865A DE102006027865A1 (en) | 2006-06-16 | 2006-06-16 | Tubocharged-internal combustion engine e.g. drive motor, for use in e.g. passenger car, has additional device with external compressor driven by engine, and pressure reservoir is connected with external compressor over pressure pipe |
Publications (1)
Publication Number | Publication Date |
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DE102006027865A1 true DE102006027865A1 (en) | 2007-12-20 |
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DE102006027865A Withdrawn DE102006027865A1 (en) | 2006-06-16 | 2006-06-16 | Tubocharged-internal combustion engine e.g. drive motor, for use in e.g. passenger car, has additional device with external compressor driven by engine, and pressure reservoir is connected with external compressor over pressure pipe |
Country Status (1)
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DE (1) | DE102006027865A1 (en) |
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