DE102005028554A1 - Two-fuel internal combustion (IC) engine, forms exhaust boundary layer at inner wall of combustion chamber by recirculating part of exhaust gases back into combustion chamber through intake or exhaust valve - Google Patents
Two-fuel internal combustion (IC) engine, forms exhaust boundary layer at inner wall of combustion chamber by recirculating part of exhaust gases back into combustion chamber through intake or exhaust valve Download PDFInfo
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- DE102005028554A1 DE102005028554A1 DE102005028554A DE102005028554A DE102005028554A1 DE 102005028554 A1 DE102005028554 A1 DE 102005028554A1 DE 102005028554 A DE102005028554 A DE 102005028554A DE 102005028554 A DE102005028554 A DE 102005028554A DE 102005028554 A1 DE102005028554 A1 DE 102005028554A1
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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]
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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
- F02B1/00—Engines characterised by fuel-air mixture compression
- F02B1/02—Engines characterised by fuel-air mixture compression with positive ignition
- F02B1/04—Engines characterised by fuel-air mixture compression with positive ignition with fuel-air mixture admission into cylinder
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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
- F02B1/00—Engines characterised by fuel-air mixture compression
- F02B1/12—Engines characterised by fuel-air mixture compression with compression ignition
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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
- F02B17/00—Engines characterised by means for effecting stratification of charge in cylinders
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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
- F02B3/00—Engines characterised by air compression and subsequent fuel addition
- F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition
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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
- F02D19/00—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
- F02D19/06—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed
- F02D19/0626—Measuring or estimating parameters related to the fuel supply system
- F02D19/0634—Determining a density, viscosity, composition or concentration
- F02D19/0636—Determining a density, viscosity, composition or concentration by estimation, i.e. without using direct measurements of a corresponding sensor
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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
- F02D19/00—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
- F02D19/06—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed
- F02D19/0639—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed characterised by the type of fuels
- F02D19/0649—Liquid fuels having different boiling temperatures, volatilities, densities, viscosities, cetane or octane numbers
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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
- F02D19/00—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
- F02D19/06—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed
- F02D19/0663—Details on the fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
- F02D19/0686—Injectors
- F02D19/0689—Injectors for in-cylinder direct injection
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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
- F02D19/00—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
- F02D19/06—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed
- F02D19/0663—Details on the fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
- F02D19/0686—Injectors
- F02D19/0692—Arrangement of multiple injectors per combustion chamber
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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
- F02D19/00—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
- F02D19/06—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed
- F02D19/08—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed simultaneously using pluralities of fuels
- F02D19/081—Adjusting the fuel composition or mixing ratio; Transitioning from one fuel to the other
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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
- F02D41/30—Controlling fuel injection
- F02D41/3011—Controlling fuel injection according to or using specific or several modes of combustion
- F02D41/3017—Controlling fuel injection according to or using specific or several modes of combustion characterised by the mode(s) being used
- F02D41/3023—Controlling fuel injection according to or using specific or several modes of combustion characterised by the mode(s) being used a mode being the stratified charge spark-ignited mode
- F02D41/3029—Controlling fuel injection according to or using specific or several modes of combustion characterised by the mode(s) being used a mode being the stratified charge spark-ignited mode further comprising a homogeneous charge spark-ignited mode
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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
- F02D41/30—Controlling fuel injection
- F02D41/38—Controlling fuel injection of the high pressure type
- F02D41/40—Controlling fuel injection of the high pressure type with means for controlling injection timing or duration
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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
- F02M26/01—Internal exhaust gas recirculation, i.e. wherein the residual exhaust gases are trapped in the cylinder or pushed back from the intake or the exhaust manifold into the combustion chamber without the use of additional passages
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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
- F02B2275/00—Other engines, components or details, not provided for in other groups of this subclass
- F02B2275/14—Direct injection into combustion chamber
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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
- F02B2275/00—Other engines, components or details, not provided for in other groups of this subclass
- F02B2275/16—Indirect injection
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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
- F02B2275/00—Other engines, components or details, not provided for in other groups of this subclass
- F02B2275/32—Miller cycle
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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
- F02B47/00—Methods of operating engines involving adding non-fuel substances or anti-knock agents to combustion air, fuel, or fuel-air mixtures of engines
- F02B47/04—Methods of operating engines involving adding non-fuel substances or anti-knock agents to combustion air, fuel, or fuel-air mixtures of engines the substances being other than water or steam only
- F02B47/08—Methods of operating engines involving adding non-fuel substances or anti-knock agents to combustion air, fuel, or fuel-air mixtures of engines the substances being other than water or steam only the substances including exhaust gas
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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
- F02D2041/001—Controlling intake air for engines with variable valve actuation
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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]
- F02D41/006—Controlling exhaust gas recirculation [EGR] using internal EGR
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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
- F02M26/13—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
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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
-
- 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
- Y02T10/30—Use of alternative fuels, e.g. biofuels
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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
- Y02T10/40—Engine management systems
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Combustion Methods Of Internal-Combustion Engines (AREA)
Abstract
Description
Die Erfindung betrifft eine Brennkraftmaschine gemäß Anspruch 1 sowie ein Verfahren zum Betrieb einer Brennkraftmaschine gemäß Anspruch 10. Insbesondere betrifft die Erfindung eine Hybrid-Kraftstoff-Brennkraftmaschine und ein Verfahren zum Betrieb einer Hybrid-Kraftstoff-Brennkraftmaschine.The The invention relates to an internal combustion engine according to claim 1 and a method for operating an internal combustion engine according to claim 10. In particular The invention relates to a hybrid fuel internal combustion engine and a method of operating a hybrid fuel internal combustion engine.
Grundsätzlich sind Brennkraftmaschinen, die mit einem Ottokraftstoff (Benzin, Gas) betrieben werden, und Brennkraftmaschinen, die mit einem Dieselkraftstoff (Diesel) betrieben werden, bekannt. Beide Kraftstoffarten bieten jeweils verschiedene Vor- und Nachteile bezüglich der Leistungsfähigkeit der Brennkraftmaschine und der Schadstoffemissionen.Basically Internal combustion engines with a petrol (gasoline, gas) operated, and internal combustion engines, with a diesel fuel (Diesel) operated, known. Both types of fuel offer each different advantages and disadvantages in terms of performance the internal combustion engine and the pollutant emissions.
Zur Reduzierung der Schadstoffemissionen bei Diesel-Brennkraftmaschinen ist neben dem Einsatz von Partikelfiltern zum Beispiel auch das Zugeben eines zweiten Stoffes (z.B. Harnstoff) als Reduktionsmittel für bei der Verbrennung des Dieselkraftstoffes entstehende Stickoxide bekannt.to Reduction of pollutant emissions in diesel internal combustion engines is in addition to the use of particulate filters, for example, the Adding a second substance (e.g., urea) as a reducing agent for at the combustion of diesel fuel resulting nitrogen oxides known.
Weiter
beschreiben zum Beispiel die
Die
Aus
der
Schließlich beschreiben
die Druckschriften
Der vorliegenden Erfindung liegt die Aufgabe zugrunde, eine Brennkraftmaschine bereitzustellen, die mit Ottokraftstoff und Dieselkraftstoff betrieben wird und die jeweiligen Vorteile des Otto- und des Dieselkraftstoffes besser nutzt.Of the The present invention is based on the object, an internal combustion engine which is powered by gasoline and diesel fuel and the respective advantages of petrol and diesel fuel better uses.
Diese Aufgabe wird durch eine Brennkraftmaschine mit den Merkmalen des Anspruchs 1 sowie ein Verfahren zum Betrieb einer Brennkraftmaschine mit den Merkmalen des Anspruchs 10 gelöst. Vorteilhafte Ausgestaltungen und Weiterbildungen der Erfindung sind Gegenstand der jeweiligen abhängigen Ansprüche.These Task is by an internal combustion engine with the characteristics of Claim 1 and a method for operating an internal combustion engine with the features of claim 10 solved. Advantageous embodiments and further developments of the invention are the subject of the respective dependent claims.
Die erfindungsgemäße Brennkraftmaschine enthält einen Brennraum, der von einem Zylinder und einem Kolben begrenzt ist; einen Einlasskanal zum Zuführen von Verbrennungsluft in den Brennraum; ein Einlassventil zum Öffnen und Schließen des Einlasskanals; eine erste Zuführvorrichtung zum Zuführen eines Ottokraftstoffes in den Brennraum zur äußeren homogenen Gemischbildung im Brennraum; eine zweite Zuführvorrichtung zum Zuführen eines Dieselkraftstoffes in den Brennraum zur inneren Gemischbildung im Brennraum; eine dritte Zuführvorrichtung zum Zuführen von Verbrennungsgasen in den Brennraum zur Bildung einer Abgasgrenzschicht auf der Zylinderwandung im Brennraum; einen Auslasskanal zum Abführen von Verbrennungsgasen aus dem Brennraum; ein Auslassventil zum Öffnen und Schließen des Auslasskanals; und eine Regel- und/oder Steuervorrichtung zum Regeln und/oder Steuern der ersten, der zweiten und der dritten Zuführvorrichtung in Abhängigkeit vom Betriebspunkt der Brennkraftmaschine.The Internal combustion engine according to the invention contains a Combustion chamber bounded by a cylinder and a piston; an inlet channel for feeding combustion air into the combustion chamber; an inlet valve for opening and Shut down the inlet channel; a first feeding device for feeding a Petrol in the combustion chamber for external homogeneous mixture formation in the combustion chamber; a second feeding device for feeding of a diesel fuel into the combustion chamber for internal mixture formation in the combustion chamber; a third feeder for feeding of combustion gases in the combustion chamber to form an exhaust gas boundary layer the cylinder wall in the combustion chamber; an outlet channel for discharging Combustion gases from the combustion chamber; an outlet valve for opening and Shut down the outlet channel; and a control and / or control device for controlling and / or controlling the first, second and third feeders dependent on from the operating point of the internal combustion engine.
Durch die Bildung eines äußeren homogenen Ottokraftstoffgemisches und eines inneren Dieselkraftstoffgemisches im Brennraum sowie einer Abgasgrenzschicht auf der Zylinderwandung des Brennraums werden die beiden Kraftstoffarten und die Abgase im gesamten Brennraum zur Verbrennung optimal verteilt. Außerdem wird das Mischungsverhältnis von Ottokraftstoff zu Dieselkraftstoff zu Abgasen im Brennraum in Abhängigkeit vom Betriebspunkt der Brennkraftmaschine geregelt, sodass der Verbrennungsprozess einerseits hinsichtlich Leistung und andererseits hinsichtlich Schadstoffemissionen optimiert werden kann.By forming an external homogeneous gasoline fuel mixture and an internal diesel fuel mixture in the combustion chamber and an exhaust gas boundary layer on the cylinder wall of the combustion chamber, the two types of fuel and the exhaust gases are optimally distributed throughout the combustion chamber for combustion. In addition, the mixing ratio of gasoline to diesel fuel to exhaust gases in the combustion chamber is regulated depending on the operating point of the internal combustion engine, so that the Combustion process can be optimized on the one hand in terms of performance and on the other hand with regard to pollutant emissions.
Die Verbrennungsgase können durch eine innere Rezirkulation aus dem Auslasskanal oder durch eine äußere Rezirkulation aus dem Einlasskanal in den Brennraum zurückgeführt werden. Im Fall der äußeren Rezirkulation können die Verbrennungsgase vorzugsweise gekühlt rückgeführt werden. Außerdem werden die Verbrennungsgase dem Brennraum vorzugsweise mit einer Drallströmung zum Beispiel um die Zylinderachse zugeführt, sodass die Zylinderwandung mit den Abgasen drallbehaftet belegt wird. Grundsätzlich sind aber auch andere Achslagen (z.B. Tumble) denkbar, um welche die Drallströmung gebildet werden kann.The Combustion gases can by an internal recirculation from the outlet duct or through an external recirculation be returned from the inlet channel into the combustion chamber. In the case of external recirculation can the combustion gases are preferably recycled cooled. In addition, will the combustion gases to the combustion chamber preferably with a swirl flow to Example supplied to the cylinder axis, so that the cylinder wall occupied with the exhaust gases swirling. Basically but also other axial positions (for example tumble) conceivable, around which the swirl flow can be formed.
Der Dieselkraftstoff kann zum Beispiel direkt durch einen Injektor in den Brennraum eingespritzt werden oder in eine mit dem Brennraum verbundene Vorkammer eingespritzt werden.Of the For example, diesel fuel can be injected directly through an injector the combustion chamber to be injected or into one with the combustion chamber connected antechamber be injected.
Der Ottokraftstoff wird vorzugsweise in den Verbrennungsluftstrom eingespritzt, sodass dem Brennraum durch den Einlasskanal ein Ottokraftstoff/Luft-Gemisch zugeführt wird. Dabei wird das Ottokraftstoff/Luft-Gemisch dem Brennraum bevorzugt mit einer Drallströmung um die Zylinderachse zugeführt, um den äußeren und homogenen Gemischanteil im Brennraum zu bilden.Of the Petrol is preferably injected into the combustion air stream, so that the combustion chamber through the inlet duct a gasoline / air mixture supplied becomes. The gasoline / air mixture is preferred with the combustion chamber a swirling flow fed around the cylinder axis, around the outside and to form homogeneous mixture content in the combustion chamber.
Ferner kann das Mischungsverhältnis von Ottokraftstoff zu Dieselkraftstoff zu Abgasen im Brennraum auch in Abhängigkeit von einer Zusammensetzung der Verbrennungsgase, die zum Beispiel mittels eines Abgassensors erfasst wird, geregelt werden.Further can the mixing ratio from gasoline to diesel fuel to exhaust gases in the combustion chamber, too dependent on from a composition of the combustion gases, for example detected by an exhaust gas sensor are controlled.
Die Zündung des Kraftstoff/Luft-Gemisches im Brennraum kann entweder mittels Fremdzündung (z.B. Zündkerze) oder mittels Selbstzündung (im Kompressionshub) erfolgen.The ignition the fuel / air mixture in the combustion chamber can either by means of Spark ignition (e.g. Spark plug) or by auto-ignition (in the compression stroke).
Obige
sowie weitere Merkmale und Vorteile der Erfindung werden aus der
nachfolgenden Beschreibung eines bevorzugten, nicht-einschränkenden
Ausführungsbeispiels
der Erfindung unter Bezugnahme auf die beiliegende Zeichnung besser
verständlich.
Darin zeigt die einzige
Über einen
Einlasskanal
In
dem Einlasskanal
Dem
Brennraum
Das
Dieselkraftstoff/Luft-Gemisch wird entweder während des Kompressionshubes
des Kolbens
Wie
in
Die
Einleitung der Verbrennungsgase in den Brennraum
Insgesamt
setzt sich die Brennraumladung also aus den drei Zonen der Abgasgrenzschicht
Eine
Regeleinheit
Hierbei
werden die Betriebsbereiche der Brennkraftmaschine zum Beispiel
in einen Bereich mit der Hauptgewichtung der äußeren homogenen Gemischbildung,
einen Bereich mit der Hauptgewichtung der inneren Gemischbildung
und einen Überlappungsbereich
eingeteilt. Außerdem
werden neben dem Mischungsverhältnis
von Ottokraftstoff zu Dieselkraftstoff zu Abgasen im Brennraum
Außerdem kann
im Auslasskanal
Während die Erfindung oben anhand eines bevorzugten Ausführungsbeispiels vollständig beschrieben worden ist, ist es für den Fachmann selbstverständlich, dass daran zahlreiche Varianten und Modifikationen möglich sind, ohne den Schutzumfang der Erfindung zu verlassen, wie er durch die anhängenden Ansprüche definiert ist.While the Invention completely described above with reference to a preferred embodiment it is for, it is for the expert of course, that numerous variants and modifications are possible without departing from the scope of the invention as defined by the pendant claims is defined.
In
dem oben beschriebenen Ausführungsbeispiel
erfolgt das Einbringen des Dieselkraftstoffes in den Brennraum
Des weiteren ist es von Vorteil, die Brennkraftmaschine zur Erhöhung ihrer spezifischen Leistung und zur Kraftstoffeinsparung mit Aufladeaggregaten (nicht dargestellt), wie beispielsweise einem Turbolader, zu versehen.Of Further, it is advantageous to the internal combustion engine to increase their specific performance and fuel economy with superchargers (not shown), such as a turbocharger to provide.
- 1010
- Zylindercylinder
- 1212
- Kolbenpiston
- 1414
- Brennraumcombustion chamber
- 1616
- Einlasskanalinlet channel
- 1818
- Einlassventilintake valve
- 2020
- Auslasskanalexhaust port
- 2222
- Auslassventiloutlet valve
- 2424
- erster Injektor (Ottokraftstoff)first Injector (petrol)
- 2525
- Drallströmungswirl flow
- 2626
- zweiter Injektor (Dieselkraftstoff)second Injector (diesel fuel)
- 2828
- Abgassensorexhaust gas sensor
- 3030
- Regeleinheitcontrol unit
- 3232
- AbgasgrenzschichtExhaust gas boundary layer
Claims (20)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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DE102005028554A DE102005028554A1 (en) | 2005-06-21 | 2005-06-21 | Two-fuel internal combustion (IC) engine, forms exhaust boundary layer at inner wall of combustion chamber by recirculating part of exhaust gases back into combustion chamber through intake or exhaust valve |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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DE102005028554A DE102005028554A1 (en) | 2005-06-21 | 2005-06-21 | Two-fuel internal combustion (IC) engine, forms exhaust boundary layer at inner wall of combustion chamber by recirculating part of exhaust gases back into combustion chamber through intake or exhaust valve |
Publications (1)
Publication Number | Publication Date |
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DE102005028554A1 true DE102005028554A1 (en) | 2007-01-04 |
Family
ID=37544762
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DE102005028554A Withdrawn DE102005028554A1 (en) | 2005-06-21 | 2005-06-21 | Two-fuel internal combustion (IC) engine, forms exhaust boundary layer at inner wall of combustion chamber by recirculating part of exhaust gases back into combustion chamber through intake or exhaust valve |
Country Status (1)
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DE (1) | DE102005028554A1 (en) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2960261A1 (en) * | 2010-05-20 | 2011-11-25 | Inst Francais Du Petrole | Internal combustion engine e.g. diesel engine, combustion controlling method for motor vehicle, involves injecting fuel in homogeneous fuel-air mixture with mass ratio between two fuels during phase of compression of engine |
CN102661205A (en) * | 2012-04-28 | 2012-09-12 | 长城汽车股份有限公司 | Control system of automotive diesel and gasoline dual-fuel engine and control method thereof |
CN102678363A (en) * | 2012-05-31 | 2012-09-19 | 长城汽车股份有限公司 | Gasoline premixing and diesel igniting engine as well as control method thereof |
EP2604830A1 (en) * | 2011-12-15 | 2013-06-19 | Hyundai Motor Company | Variable ignition type diesel-gasoline dual fuel powered combustion engine, system, and method |
WO2013159875A1 (en) * | 2012-04-25 | 2013-10-31 | Mtu Friedrichshafen Gmbh | Method for controlling and regulating an internal combustion engine according to the hcci combustion method |
CN104564369A (en) * | 2013-10-29 | 2015-04-29 | 现代自动车株式会社 | Method and apparatus for controlling combustion of engine having mixed combustion mode |
EP2868905A3 (en) * | 2013-10-29 | 2015-12-23 | Hyundai Motor Company | Method and apparatus for controlling combustion of engine having mixed combustion mode with diesel and gasoline |
EP2604833A3 (en) * | 2011-12-15 | 2018-03-28 | Hyundai Motor Company | System and method for controlling a variable ignition diesel-gasoline dual fuel powered combustion engine |
-
2005
- 2005-06-21 DE DE102005028554A patent/DE102005028554A1/en not_active Withdrawn
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2960261A1 (en) * | 2010-05-20 | 2011-11-25 | Inst Francais Du Petrole | Internal combustion engine e.g. diesel engine, combustion controlling method for motor vehicle, involves injecting fuel in homogeneous fuel-air mixture with mass ratio between two fuels during phase of compression of engine |
EP2604830A1 (en) * | 2011-12-15 | 2013-06-19 | Hyundai Motor Company | Variable ignition type diesel-gasoline dual fuel powered combustion engine, system, and method |
EP2604833A3 (en) * | 2011-12-15 | 2018-03-28 | Hyundai Motor Company | System and method for controlling a variable ignition diesel-gasoline dual fuel powered combustion engine |
WO2013159875A1 (en) * | 2012-04-25 | 2013-10-31 | Mtu Friedrichshafen Gmbh | Method for controlling and regulating an internal combustion engine according to the hcci combustion method |
CN102661205A (en) * | 2012-04-28 | 2012-09-12 | 长城汽车股份有限公司 | Control system of automotive diesel and gasoline dual-fuel engine and control method thereof |
CN102661205B (en) * | 2012-04-28 | 2016-03-02 | 长城汽车股份有限公司 | The controlling method of motor vehicle diesel, gasoline dual-fuel engine control system |
CN102678363A (en) * | 2012-05-31 | 2012-09-19 | 长城汽车股份有限公司 | Gasoline premixing and diesel igniting engine as well as control method thereof |
CN102678363B (en) * | 2012-05-31 | 2015-05-27 | 长城汽车股份有限公司 | Gasoline premixing and diesel igniting engine as well as control method thereof |
CN104564369A (en) * | 2013-10-29 | 2015-04-29 | 现代自动车株式会社 | Method and apparatus for controlling combustion of engine having mixed combustion mode |
EP2868905A3 (en) * | 2013-10-29 | 2015-12-23 | Hyundai Motor Company | Method and apparatus for controlling combustion of engine having mixed combustion mode with diesel and gasoline |
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Effective date: 20120414 |