DE102009043086A1 - Method for operating internal-combustion engine, particularly auto-ignition internal-combustion engine, involves guiding combustion air to operating cylinders of internal-combustion engine by combustion air plant - Google Patents
Method for operating internal-combustion engine, particularly auto-ignition internal-combustion engine, involves guiding combustion air to operating cylinders of internal-combustion engine by combustion air plant Download PDFInfo
- Publication number
- DE102009043086A1 DE102009043086A1 DE102009043086A DE102009043086A DE102009043086A1 DE 102009043086 A1 DE102009043086 A1 DE 102009043086A1 DE 102009043086 A DE102009043086 A DE 102009043086A DE 102009043086 A DE102009043086 A DE 102009043086A DE 102009043086 A1 DE102009043086 A1 DE 102009043086A1
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- Germany
- Prior art keywords
- combustion engine
- internal combustion
- combustion air
- exhaust
- internal
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- 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.)
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Classifications
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- 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
- F02D41/0002—Controlling intake air
- F02D41/0007—Controlling intake air for control of turbo-charged or super-charged engines
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- 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
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- 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
- F02D41/0055—Special engine operating conditions, e.g. for regeneration of exhaust gas treatment apparatus
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- 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
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- 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
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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)
- Exhaust-Gas Circulating Devices (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
- Supercharger (AREA)
Abstract
Description
Die Erfindung betrifft ein Verfahren zum Betreiben einer Brennkraftmaschine, insbesondere einer selbstzündenden Brennkraftmaschine, mit einer Verbrennungsluftanlage, welche Verbrennungsluft zu Arbeitszylindern der Brennkraftmaschine führt, einer Abgasanlage, die Abgas von den Arbeitszylindern abführt, und einem Abgasturbolader, der einen in der Verbrennungsluftanlage angeordneten Verdichter sowie eine in der Abgasanlage angeordnete Turbine, welche den Verdichter antreibt, aufweist, wobei von dem Verdichter in der Verbrennungsluftanlage stromab des Verdichters und stromauf der Arbeitszylinder ein Ladedruck erzeugt wird und wobei in der Abgasanlage stromab der Arbeitszylinder und stromauf der Turbine ein Abgasgegendruck erzeugt wird, gemäß dem Oberbegriff des Patentanspruchs 1.The invention relates to a method for operating an internal combustion engine, in particular a self-igniting internal combustion engine, with a combustion air system, which combustion air leads to working cylinders of the internal combustion engine, an exhaust system that dissipates exhaust gas from the working cylinders, and an exhaust gas turbocharger, which is arranged in the combustion air compressor and a compressor Turbine arranged in the exhaust system, which drives the compressor, wherein from the compressor in the combustion air system downstream of the compressor and upstream of the working cylinder, a boost pressure is generated and wherein in the exhaust system downstream of the working cylinder and upstream of the turbine, an exhaust back pressure is generated according to Preamble of claim 1.
Bei Brennkraftmaschinen mit Abgasturbolader ist das Phänomen des sogenannten ”Turboloches” bekannt. Dies bezeichnet eine als unangenehm empfundene Zeitspanne von einer Lastanforderung an die Brennkraftmaschine bis zum endgültigen Aufbau eines für die Lastanforderung erforderlichen Ladedruckes. Besonders bei niedrigen Drehzahlen mit niedriger Abgasenthalpie ist das Turboloch besonders stark ausgeprägt.In internal combustion engines with turbocharger, the phenomenon of the so-called "turbo lag" is known. This denotes a perceived as unpleasant period of time from a load request to the internal combustion engine to the final construction of a charge pressure required for the load request. Especially at low speeds with low exhaust enthalpy, the turbo lag is particularly pronounced.
Aus der
Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren der o. g. Art hinsichtlich des Ladedruckaufbaus nach einer Lastanforderung an die Brennkraftmaschine zu verbessern.The invention is based on the object, a method of o. G. Type with regard to the boost pressure build-up after a load request to improve the internal combustion engine.
Diese Aufgabe wird erfindungsgemäß durch ein Verfahren der o. g. Art mit den in Anspruch 1 gekennzeichneten Merkmalen gelöst. Vorteilhafte Ausgestaltungen der Erfindung sind in den weiteren Ansprüchen beschrieben.This object is achieved by a method of o. G. Art solved with the features characterized in claim 1. Advantageous embodiments of the invention are described in the further claims.
Dazu ist es bei einem Verfahren der o. g. Art erfindungsgemäß vorgesehen, dass in mindestens einem Betriebszustand der Brennkraftmaschine, in dem der Ladedruck größer ist als der Abgasgegendruck, eine fluidleitende Verbindung zwischen der Verbrennungsluftanlage stromab des Verdichters sowie stromauf der Arbeitszylinder und der Abgasanlage stromab der Arbeitszylinder und stromauf der Turbine hergestellt wird.This is in a method of o. G. Art according to the invention provided that in at least one operating condition of the internal combustion engine in which the boost pressure is greater than the exhaust back pressure, a fluid-conducting connection between the combustion air system downstream of the compressor and upstream of the working cylinder and the exhaust system downstream of the working cylinder and upstream of the turbine is made.
Dies hat den Vorteil, dass ein Teil der Ladeluft auf direktem Wege in die Turbine geleitet wird und dort den Antrieb der Turbine mit unterstützt. Dies erzielt eine Ladedruckerhöhung insbesondere bei niedrigen Drehzahlen der Brennkraftmaschine, bei denen eine entsprechend niedrige Abgasenthalpie vorliegt.This has the advantage that a portion of the charge air is passed directly into the turbine and there supports the drive of the turbine. This achieves a boost pressure increase, in particular at low rotational speeds of the internal combustion engine, in which a correspondingly low exhaust gas enthalpy is present.
Der mindestens eine Betriebszustand der Brennkraftmaschine umfasst beispielsweise eine Lastanforderung bei niedriger Drehzahl der Brennkraftmaschine. Hierbei ist die Lastanforderung beispielsweise eine Volllastanforderung und die niedrige Drehzahl umfasst hierbei beispielsweise einen Drehzahlbereich von Leerlaufdrehzahl bis 2000 U/min.The at least one operating state of the internal combustion engine comprises, for example, a load request at a low rotational speed of the internal combustion engine. Here, the load request, for example, a full load request and the low speed here includes, for example, a speed range of idle speed up to 2000 U / min.
Einen Zusatznutzen einer Hochdruck-Abgasrückführung der Brennkraftmaschine erzielt man dadurch, dass zum Herstellen der fluidleitenden Verbindung eine Abgasrückführleitung einer Hochdruck-Abgasrückführung der Brennkraftmaschine verwendet wird.An added benefit of a high-pressure exhaust gas recirculation of the internal combustion engine is achieved in that an exhaust gas recirculation line of high-pressure exhaust gas recirculation of the internal combustion engine is used to produce the fluid-conducting connection.
Die Erfindung wird im Folgenden anhand der Zeichnung näher erläutert. Diese zeigt inThe invention will be explained in more detail below with reference to the drawing. This shows in
In
Die in
Eine Differenz von Ladedruck
Weiterhin weist die Brennkraftmaschine eine Hochdruck-Abgasrückführleitung
In
In
Erfindungsgemäß wird das positive Spülgefälle genutzt, indem die Verbrennungsluft bzw. Ladeluft
Bei Dieselmotoren kann üblicherweise die Verstellung der Steuerzeiten nicht genutzt werden, da aufgrund der höheren Verdichtung im OT-Bereich der Kolben näher an den Ventilen steht und somit die erforderliche, deutliche Veränderung der Einlassventilsteuerzeiten zu Kollisionen des noch offenen Einlassventils mit dem Kolben führen würde.In diesel engines usually the adjustment of the timing can not be used because due to the higher compression in the TDC range, the piston is closer to the valves and thus the required significant change in intake valve timing would lead to collisions of the still open intake valve with the piston.
Dieselmotoren weisen jedoch üblicherweise die externe HD-AGR-Leitung
Bei Ottomotoren führt die Durchspülung zu einer Ausmagerung des Abgases. Dies behindert im λ = 1-Betrieb die Funktion der NOx-Abgasreinigung und führt aufgrund der höheren Reaktionsgeschwindigkeiten bei der HC-/CO-Oxidation zu einer erhöhten Temperaturbelastung eines in der Abgasanlage
Grundsätzlich ist beim Dieselmotor die Nutzung des positiven Spülgefälles in zwei Richtungen möglich. Erstens durch Anhebung des Drehmoments in der oben stehend genannten Höhe und zweitens durch Senkung der Emissionen durch stärkere Ladungsverdünnung. Die Anwendung der Volllast-AGR ist daher bevorzugt bei Fahrzeugen mit Dieselmotor wirkungsvoll, die die
Die Motoren haben mindestens einen, bevorzugt zwei oder mehr Turbolader oder mindestens eine mechanische Aufladevorrichtung, die mit einem ATL kombiniert ist.The engines have at least one, preferably two or more, turbochargers or at least one mechanical supercharger combined with an ATL.
ZITATE ENTHALTEN IN DER BESCHREIBUNG QUOTES INCLUDE IN THE DESCRIPTION
Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.
Zitierte PatentliteraturCited patent literature
- DE 4441164 C2 [0003] DE 4441164 C2 [0003]
Zitierte Nicht-PatentliteraturCited non-patent literature
- EU5- [0024] EU5 [0024]
- EU6-Norm [0024] EU6 standard [0024]
- EURO-V- [0024] EURO-V- [0024]
- EURO-VI-Norm [0024] EURO VI standard [0024]
Claims (5)
Priority Applications (1)
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DE102009043086.5A DE102009043086B4 (en) | 2009-09-25 | 2009-09-25 | Method for operating an internal combustion engine with high-pressure exhaust gas recirculation |
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DE102009043086.5A DE102009043086B4 (en) | 2009-09-25 | 2009-09-25 | Method for operating an internal combustion engine with high-pressure exhaust gas recirculation |
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DE102009043086A1 true DE102009043086A1 (en) | 2011-03-31 |
DE102009043086B4 DE102009043086B4 (en) | 2022-06-09 |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102013005068A1 (en) | 2013-03-22 | 2014-09-25 | Volkswagen Aktiengesellschaft | Internal combustion engine with bypass channel for scavenging |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4441164C2 (en) | 1994-11-18 | 1997-04-03 | Daimler Benz Ag | Device for controlling the charge air flow for a supercharged internal combustion engine |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
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DE10259052B3 (en) | 2002-12-17 | 2004-04-01 | Siemens Ag | Heating method for exhaust catalyzer of direct fuel injection IC engine for automobile using increased exothermy in catalyzer for accelerated heating during cold-starting |
JP4496248B2 (en) | 2005-03-09 | 2010-07-07 | 株式会社小松製作所 | Supercharged engine with EGR device |
JP4253339B2 (en) | 2006-09-21 | 2009-04-08 | 株式会社日立製作所 | Control device for internal combustion engine |
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- 2009-09-25 DE DE102009043086.5A patent/DE102009043086B4/en active Active
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
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DE4441164C2 (en) | 1994-11-18 | 1997-04-03 | Daimler Benz Ag | Device for controlling the charge air flow for a supercharged internal combustion engine |
Non-Patent Citations (4)
Title |
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EU5- |
EU6-Norm |
EURO-V- |
EURO-VI-Norm |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102013005068A1 (en) | 2013-03-22 | 2014-09-25 | Volkswagen Aktiengesellschaft | Internal combustion engine with bypass channel for scavenging |
DE102013005068B4 (en) | 2013-03-22 | 2023-04-20 | Volkswagen Aktiengesellschaft | Combustion engine with bypass channel for scavenging |
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