DE3421355A1 - Method for the operation of an internal combustion engine with exhaust turbocharger and device for implementing the method - Google Patents

Method for the operation of an internal combustion engine with exhaust turbocharger and device for implementing the method

Info

Publication number
DE3421355A1
DE3421355A1 DE19843421355 DE3421355A DE3421355A1 DE 3421355 A1 DE3421355 A1 DE 3421355A1 DE 19843421355 DE19843421355 DE 19843421355 DE 3421355 A DE3421355 A DE 3421355A DE 3421355 A1 DE3421355 A1 DE 3421355A1
Authority
DE
Germany
Prior art keywords
internal combustion
combustion engine
exhaust
engine
liquid
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
DE19843421355
Other languages
German (de)
Inventor
Adrian Dipl Ing Streuli
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.)
BBC Brown Boveri AG Switzerland
Original Assignee
BBC Brown Boveri AG Switzerland
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by BBC Brown Boveri AG Switzerland filed Critical BBC Brown Boveri AG Switzerland
Priority to DE19843421355 priority Critical patent/DE3421355A1/en
Publication of DE3421355A1 publication Critical patent/DE3421355A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
    • F01D25/002—Cleaning of turbomachines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/04—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust using liquids
    • 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
    • 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
    • F02B39/00—Component parts, details, or accessories relating to, driven charging or scavenging pumps, not provided for in groups F02B33/00 - F02B37/00
    • F02B39/005—Cooling of pump drives
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2220/00—Application
    • F05D2220/40—Application in turbochargers
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Supercharger (AREA)

Abstract

In order to improve the speed characteristic and to reduce the turbine temperature of a supercharged internal combustion engine (1) it is proposed to inject a non-combustible liquid, preferably water, into the surrounding of the areas of the exhaust system (2, 3) at risk from overheating. The injection quantity is controlled by way of various engine parameters, such as, for example, the charging pressure, oil pressure or the engine speed. <IMAGE>

Description

55/8455/84

6.6.84 Hw/eh6.6.84 hw / eh

Verfahren zum Betrieb einer BrennkraftmaschineMethod for operating an internal combustion engine

mit Abgasturbolader und Vorrichtung zurwith exhaust gas turbocharger and device for

Durchführung des Verfahrens Implementation of the procedure

Die vorliegende Erfindung betrifft ein Verfahren zum Betrieb einer Brennkraftmaschine gemäss dem Oberbegriff des Anspruches 1, sowie eine Vorrichtung zur Durchführung des Verfahrens.The present invention relates to a method for operating an internal combustion engine according to the preamble of claim 1, and a device for performing the method.

Bei Brennkraftmaschinen mit auf Vollast ausgelegten Abgasturboladern ergibt sich das Problem, dass bei verringerter Drehzahl und/oder Last, der Turbolader keinen ausreichenden Ladedruck mehr liefert. Daher wird bei Fahrzeugmotoren, sowie bei hochaufgeladenen Dieselmotoren der Turbolader auf Teillastbetrieb ausgelegt, wodurch bei verringerter Drehzahl und/oder Last ein ausreichend hoher Ladedruck verfügbar ist. Wenn die Drehzahl und/oder Last erhöht wird, kann jedoch ein schädliches Ansteigen des Ladedruckes eintreten. Dies wird bei bekannten Ausbildungen durch die Anordnung eines Abblaseventiles verhindert, welches abgasseitig oder luftseitig vorgesehen werden kann.In internal combustion engines with exhaust gas turbochargers designed for full load, the problem arises that with reduced Speed and / or load, the turbocharger is no longer delivering sufficient boost pressure. Therefore, at Vehicle engines, as well as the turbocharger for highly charged diesel engines, are designed for partial load operation, which means A sufficiently high boost pressure is available at reduced engine speed and / or load. If the speed and / or Load is increased, but a harmful increase in boost pressure can occur. This is the case with known trainings prevented by the arrangement of a relief valve, which is provided on the exhaust side or air side can be.

Nachteilig bei diesen bekannten Vorrichtungen ist einmal der konstruktive Aufwand in Form von Ventilen und/oder Klappen in den Abgas- und Verbrennungsluftleitungen. Daneben können diese Anordnungen zu mechanischen Problemen führen, insbesondere wenn sie in den Abgasleitungen vorgesehen sind, da dort Störungen durch Verkokungen, Russeinwirkungen und Ueberhitzungen auftreten können. Auch treten häufig Lärmemissionen, verursacht durch die durchströmenden Gase auf.A disadvantage of these known devices is, on the one hand, the structural complexity in the form of valves and / or Flaps in the exhaust and combustion air lines. In addition, these arrangements can lead to mechanical problems lead, especially if they are provided in the exhaust pipes, since there are malfunctions due to coking, Soot effects and overheating can occur. There are also frequent noise emissions caused by the gases flowing through.

Weiterhin ist von Nachteil, dass die Abgastemperatur vor der Abgasturbine stark ansteigt (CiMAC-ßericht 1983, Seiten 1549 bis 1569).Another disadvantage is that the exhaust gas temperature rises sharply in front of the exhaust gas turbine (CiMAC report 1983, Pages 1549 to 1569).

Bei einem Abblasen eines Teiles der verdichteten Verbrennungsluft nach dem Verdichter, steigt bei Vollast die Drehzahl des Turboladers stark an. Dadurch erhöht sich bei gleichem Druckverhältnis der Volumenstrom durch den Verdichter sehr stark.If part of the compressed combustion air is blown off after the compressor, the pressure increases at full load The speed of the turbocharger increases significantly. This increases the volume flow through with the same pressure ratio the compressor very strongly.

Es ist Aufgabe der Erfindung, ein Verfahren zum Betrieb von aufgeladenen Brennkraftmaschinen zu schaffen, bei welchem auch bei hohen Motorlasten und/oder Motordrehzahlen die Turboladerdrehzahl relativ niedrig bleibt. Dies wird erfindungsgemäss durch das kennzeichnende Merkmal des Anspruchs 1 erreicht.It is the object of the invention to create a method for operating supercharged internal combustion engines which the turbocharger speed remains relatively low even at high engine loads and / or engine speeds. This is achieved according to the invention by the characterizing feature of claim 1.

Dabei werden durch die Flüssigkeitseinspritzung die Abgastemperatur und damit die Turbineneintrittstemperatur in relativ niedrigen Bereichen gehalten.The exhaust gas temperature and thus the turbine inlet temperature are thereby determined by the liquid injection held in relatively low ranges.

Besonders vorteilhaft ist es, wenn die Flüssigkeit, vor/ucjswe i se Wasser, aber auch Mischungen von Wasser mit Detergentien oder Antikorrosionsmitteln an den überhitzungsgefährdeten Stellen des Abgassammlerrohres eingespritzt wird. Daneben kann durch die Beimischung vonIt is particularly advantageous if the liquid is primarily water, but also mixtures of water with detergents or anti-corrosion agents on those at risk of overheating Places the exhaust manifold pipe is injected. In addition, by adding

Flüssigkeitstropfen zum Abgas gleichzeitig eine Reinigung der Turbine erzielt werden. Im Hinblick auf den spezifischen Kraftstoffverbrauch b , den Luftbedarf des Motors 1 , den Luftüberschuss "K , die Ventilsitztemperatur Τ.,ς, sowie den übrigen Druckverhältnissen im Motor ergibt die Flüssigkeitseinspritzung in die Abgasleitung die gleichen Verhältnisse wie ein Luftabblasventil nach dem Verdichter.Liquid droplets to the exhaust gas at the same time a cleaning of the turbine can be achieved. With regard to the specific fuel consumption b, the air requirement of the engine 1, the excess air "K , the valve seat temperature Τ., Σ , and the other pressure conditions in the engine, the liquid injection into the exhaust line results in the same conditions as an air blow-off valve after the compressor.

In der Zeichnung ist vereinfacht ein Ausführungsbeispiel der erfindungsgemässen Vorrichtung zur Durchführung des Verfahrens dargestellt, wobei mit 1 ein· Teil einer Brennkraftmaschine bezeichnet ist, deren Abgasstutzen in einen Abgassammler 3 münden. Dieser ist mit einer Turbine 4 eines Turboladers 5 verbunden. Die Turbine ist drehfest mit einem Verdichter 6 gekuppelt, der über ein Luftansaugrohr 7 Verbrennungsluft ansaugt und durch einen Ladeluftkühler 8 einem Luftverteiler 9 der Brennkraftmaschine 1 und damit deren Zylindern 10 zuführt. Der ausgezogene Pfeil bedeutet den Abgasaustritt aus der Turbine 4, während der konturhaft gezeichnete Pfeil die angesaugte Verbrennungsluft darstellt.An exemplary embodiment is shown in simplified form in the drawing the inventive device for implementation of the method, with 1 denoting a part of an internal combustion engine, its exhaust pipe open into an exhaust manifold 3. This is connected to a turbine 4 of a turbocharger 5. The turbine is rotatably coupled to a compressor 6, which is about an air intake pipe 7 sucks in combustion air and through a charge air cooler 8 feeds an air distributor 9 of the internal combustion engine 1 and thus its cylinders 10. The solid arrow means the exhaust gas outlet from the turbine 4, while the contoured arrow represents the intake combustion air.

Im Abgassammler 3 sind Einspritzdüsen 11 angeordnet, welche über Druckleitungen 12 mit einer an sich bekannten Einspritzpumpe 13 verbunden sind. Aus einem Flüssigkeitsvorratsbehälter 14 wird Flüssigkeit, vorzugsweise Wasser oder eine Mischung aus Wasser mit Detergentien oder Antikorrosionsmitteln von der Einspritzpumpe 13 angesaugt und durch die Druckleitungen 12 den Einspritzdüsen 11 zugeführt. Die Einspritzdüsen sind vorzugsweise so am Abgassammler 3 angeordnet, dass die Flüssigkeit besonders überhitzungsgefährdete Stellen, beispielsweise die aus den Zylindern 10 herausführenden Abgasstutzen 2, kühlt.In the exhaust manifold 3 injection nozzles 11 are arranged, which via pressure lines 12 with a known per se Injection pump 13 are connected. A liquid reservoir 14 becomes liquid, preferably water or a mixture of water with detergents or anti-corrosion agents is sucked in by the injection pump 13 and fed through the pressure lines 12 to the injection nozzles 11. The injection nozzles are preferably like this arranged on the exhaust manifold 3 that the liquid is particularly at risk of overheating, for example the exhaust pipe 2 leading out of the cylinders 10 cools.

Da der Turbolader für Teillast ausgelegt ist, wird beispielsweise bei etwa 60 % Motorleistung mit dem Einspritzen von Kühlflüssigkeit an den vorgenannten Stellen begonnen. Bei erhöhter Motorleistung, d.h. von Teillast auf Vollast wird die Einspritzmenge der Kühlflüssigkeit entsprechend erhöht, so dass der Ladedruck innerhalb der zulässigen Grenzen konstant bleibt.Since the turbocharger is designed for partial load, the injection of cooling liquid is started at the aforementioned points , for example at around 60% engine power. With increased engine output, ie from partial load to full load, the amount of coolant injected is increased accordingly so that the boost pressure remains constant within the permissible limits.

Durch die Vermischung der heissen Abgase mit der eingespritzten Flüssigkeit wird gleichzeitig die Turbine 4 gekühlt und vor Russablagerungen weitgehend geschützt.By mixing the hot exhaust gases with the injected ones Liquid is cooled at the same time the turbine 4 and largely protected from soot deposits.

Die Regelung der Einspritzmenge kann über verschiedene Motorkenngrössen, beispielsweise Drehzahl, Ladedruck oder Oeldruck erfolgen.The injection quantity can be regulated in various ways Engine parameters, for example speed, boost pressure or oil pressure.

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Claims (2)

PATENTANSPRÜCHEPATENT CLAIMS Γί ./'Verfahren zum Betrieb einer Brennkraftmaschine (1) mit Abgasturbolader (5), wobei der Turbolader (5) eine auf Motor-Teildrehzahl und/oder eine auf Teillast abgestimmte Auslegung aufweist, dadurch gekennzeichnet, dass bei einer Drehzahlerhöhung und/oder Vergrösserung der Last nicht brennbare Flüssigkeit in die Umgebung von überhitzungsgefährdeten Stellen des Auspuffsystemes (2, 3) eingespritzt wird, und dass die eingespritzte Flüssigkeitsmenge über den Ladedruck den· Oeldruck und/oder die Motordrehzahl geregelt wird. Γί ./'Method for operating an internal combustion engine (1) with an exhaust gas turbocharger (5), the turbocharger (5) having a design tailored to partial engine speed and / or partial load, characterized in that when the speed is increased and / or increased the load, non-flammable liquid is injected into the vicinity of points of the exhaust system (2, 3) at risk of overheating, and that the injected amount of liquid is regulated via the boost pressure, the oil pressure and / or the engine speed. 2. Vorrichtung zur Durchführung des Verfahrens nach Anspruch 1, dadurch gekennzeichnet, dass im Abgassammler (3) des Auspuffsystemes (2, 3) mindestens zwei Einspritzdüsen (11) angeordnet sind, die über Druckleitungen (12) mit einer Einspritzpumpe (13) und einem Flüssigkeitsbehälter (14) verbunden sind.2. Device for performing the method according to claim 1, characterized in that in the exhaust manifold (3) of the exhaust system (2, 3) at least two injection nozzles (11) are arranged over Pressure lines (12) are connected to an injection pump (13) and a liquid container (14).
DE19843421355 1984-06-08 1984-06-08 Method for the operation of an internal combustion engine with exhaust turbocharger and device for implementing the method Withdrawn DE3421355A1 (en)

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DE19843421355 DE3421355A1 (en) 1984-06-08 1984-06-08 Method for the operation of an internal combustion engine with exhaust turbocharger and device for implementing the method

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DE19843421355 DE3421355A1 (en) 1984-06-08 1984-06-08 Method for the operation of an internal combustion engine with exhaust turbocharger and device for implementing the method

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DE3421355A1 true DE3421355A1 (en) 1985-12-12

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2700581A1 (en) * 1993-01-19 1994-07-22 Rognon Armand Gas exhaust system for IC-engine
EP0935059A3 (en) * 1998-02-07 2003-02-12 Caterpillar Motoren GmbH &amp; Co. KG Method and device for operating a supercharged internal combustion engine
WO2007031598A1 (en) * 2005-09-16 2007-03-22 Wärtsilä Finland Oy Turbocharger cleaning arrangement
WO2007031599A1 (en) * 2005-09-16 2007-03-22 Wärtsilä Finland Oy Arrangement and method in connection with a piston engine having a turbocompressor
WO2012123634A1 (en) * 2011-03-14 2012-09-20 Wärtsilä Finland Oy Operating method and exhaust system for an internal combustion engine
DE102016102215A1 (en) 2016-02-09 2017-08-10 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Exhaust pipe system for a supercharged internal combustion engine
RU2636362C1 (en) * 2016-11-22 2017-11-22 Никишин ГмбХ Internal combustion engine turbosupercharge control device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1128475A (en) * 1954-04-01 1957-01-07 Cementation Muffelite Ltd Mufflers for jet engines
DE1248372B (en) * 1962-02-23 1967-08-24 Industrial Acoustics Co Exhaust silencer for the ground operation of jet engines
GB2018358A (en) * 1978-04-05 1979-10-17 Maschf Augsburg Nuernberg Ag Exhaust-gas turbocharged internal combustion engine
DE3126678A1 (en) * 1981-07-07 1983-01-27 M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 8900 Augsburg Supercharged internal combustion engine subjected to strong load fluctuations and method for its operation

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1128475A (en) * 1954-04-01 1957-01-07 Cementation Muffelite Ltd Mufflers for jet engines
DE1248372B (en) * 1962-02-23 1967-08-24 Industrial Acoustics Co Exhaust silencer for the ground operation of jet engines
GB2018358A (en) * 1978-04-05 1979-10-17 Maschf Augsburg Nuernberg Ag Exhaust-gas turbocharged internal combustion engine
DE3126678A1 (en) * 1981-07-07 1983-01-27 M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 8900 Augsburg Supercharged internal combustion engine subjected to strong load fluctuations and method for its operation

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2700581A1 (en) * 1993-01-19 1994-07-22 Rognon Armand Gas exhaust system for IC-engine
EP0935059A3 (en) * 1998-02-07 2003-02-12 Caterpillar Motoren GmbH &amp; Co. KG Method and device for operating a supercharged internal combustion engine
WO2007031598A1 (en) * 2005-09-16 2007-03-22 Wärtsilä Finland Oy Turbocharger cleaning arrangement
WO2007031599A1 (en) * 2005-09-16 2007-03-22 Wärtsilä Finland Oy Arrangement and method in connection with a piston engine having a turbocompressor
JP2009508055A (en) * 2005-09-16 2009-02-26 ワルトシラ フィンランド オサケユキチュア Piston engine with turbo compressor and method related to the piston engine
CN101263279B (en) * 2005-09-16 2010-10-13 瓦特西拉芬兰有限公司 Turbocharger cleaning arrangement
US8667796B2 (en) 2005-09-16 2014-03-11 Wartsila Finland Oy Turbocharger cleaning arrangement
WO2012123634A1 (en) * 2011-03-14 2012-09-20 Wärtsilä Finland Oy Operating method and exhaust system for an internal combustion engine
DE102016102215A1 (en) 2016-02-09 2017-08-10 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Exhaust pipe system for a supercharged internal combustion engine
DE102016102215B4 (en) 2016-02-09 2023-09-14 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Exhaust pipe system for a supercharged internal combustion engine
RU2636362C1 (en) * 2016-11-22 2017-11-22 Никишин ГмбХ Internal combustion engine turbosupercharge control device

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