DE102006048498A1 - A spark-ignited internal combustion engine operable with gaseous fuel with a fuel supply system and method for operating an internal combustion engine - Google Patents
A spark-ignited internal combustion engine operable with gaseous fuel with a fuel supply system and method for operating an internal combustion engine Download PDFInfo
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- DE102006048498A1 DE102006048498A1 DE102006048498A DE102006048498A DE102006048498A1 DE 102006048498 A1 DE102006048498 A1 DE 102006048498A1 DE 102006048498 A DE102006048498 A DE 102006048498A DE 102006048498 A DE102006048498 A DE 102006048498A DE 102006048498 A1 DE102006048498 A1 DE 102006048498A1
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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
- F02M45/00—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship
- F02M45/12—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship providing a continuous cyclic delivery with variable pressure
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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
- F02D19/02—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 gaseous fuels
- F02D19/021—Control of components of the fuel supply system
- F02D19/022—Control of components of the fuel supply system to adjust the fuel pressure, temperature or composition
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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
- F02D19/02—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 gaseous fuels
- F02D19/026—Measuring or estimating parameters related to the fuel supply system
- F02D19/027—Determining the fuel pressure, temperature or volume flow, the fuel tank fill level or a valve position
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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
- F02D19/0628—Determining the fuel pressure, temperature or flow, the fuel tank fill level or a valve position
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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
- F02D19/0642—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 at least one fuel being gaseous, the other fuels being gaseous or liquid at standard conditions
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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
- F02D41/0027—Controlling engines characterised by use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures the fuel being gaseous
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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
- F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
- F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
- F02M21/0218—Details on the gaseous fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
- F02M21/0245—High pressure fuel supply systems; Rails; Pumps; Arrangement of valves
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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
- F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
- F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
- F02M21/0218—Details on the gaseous fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
- F02M21/0248—Injectors
- F02M21/0275—Injectors for in-cylinder direct injection, e.g. injector combined with spark plug
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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
- F02M69/00—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel
- F02M69/04—Injectors peculiar thereto
- F02M69/042—Positioning of injectors with respect to engine, e.g. in the air intake conduit
- F02M69/046—Positioning of injectors with respect to engine, e.g. in the air intake conduit for injecting into both the combustion chamber and the intake conduit
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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
- F02B75/00—Other engines
- F02B75/12—Other methods of operation
- F02B2075/125—Direct injection in the combustion chamber for spark ignition engines, i.e. not in pre-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
- F02D19/0663—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
- F02D19/0663—Details on the fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
- F02D19/0686—Injectors
- F02D19/0694—Injectors operating with a plurality of fuels
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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
- F02D2041/389—Controlling fuel injection of the high pressure type for injecting directly into the cylinder
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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
- F02D2200/00—Input parameters for engine control
- F02D2200/02—Input parameters for engine control the parameters being related to the engine
- F02D2200/06—Fuel or fuel supply system parameters
- F02D2200/0602—Fuel pressure
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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
- F02D2200/00—Input parameters for engine control
- F02D2200/02—Input parameters for engine control the parameters being related to the engine
- F02D2200/06—Fuel or fuel supply system parameters
- F02D2200/0606—Fuel temperature
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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
- F02D41/3094—Controlling fuel injection the fuel injection being effected by at least two different injectors, e.g. one in the intake manifold and one in the cylinder
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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
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
- F02M61/161—Means for adjusting injection-valve lift
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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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- 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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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Abstract
Es sind gasbetriebene, fremdgezündete Brennkraftmaschinen bekannt, bei denen der gasförmige Kraftstoff in einen Brennraum eines Zylinders eingeblasen wird. Die Erfindung betrifft eine fremdgezündete, mit gasförmigem Kraftstoff betreibbare, mindestens einen Brennraum (13) aufweisende Brennkraftmaschine (1), die zumindest einen ersten Injektor (26) für gasförmigen Kraftstoff aufweist. Der zumindest eine erste Injektor (26) ist durch gasförmigen Kraftstoff mit einem Druck beaufschlagbar, der ungefähr dem Druck in einem Gastank (22) entspricht. Der gasförmige Kraftstoff ist durch den zumindest einen ersten Injektor (26) direkt in einen Brennraum (13) der Brennkraftmaschine (1) einbringbar. Die Erfindung wird bei fremdgezündeten Brennkraftmaschinen für gasförmige Kraftstoffe angewandt.There are gas-powered, spark-ignited internal combustion engines are known in which the gaseous fuel is injected into a combustion chamber of a cylinder. The invention relates to a spark-ignited, operable with gaseous fuel, at least one combustion chamber (13) having internal combustion engine (1) having at least one first injector (26) for gaseous fuel. The at least one first injector (26) can be acted upon by gaseous fuel with a pressure which corresponds approximately to the pressure in a gas tank (22). The gaseous fuel can be introduced directly into a combustion chamber (13) of the internal combustion engine (1) through the at least one first injector (26). The invention is applied to spark ignited internal combustion engines for gaseous fuels.
Description
Die Erfindung betrifft eine fremdgezündete, mit gasförmigem Kraftstoff betreibbare Brennkraftmaschine mit den Merkmalen des Oberbegriffs des Anspruchs 1 beziehungsweise nach Anspruch 5 und ein Verfahren zum Betrieb einer fremdgezündeten, mit gasförmigem Kraftstoff betreibbaren Brennkraftmaschine mit den Merkmalen des Oberbegriffs des Anspruchs 6.The The invention relates to a spark-ignition, with gaseous Fuel operable internal combustion engine with the characteristics of The preamble of claim 1 or according to claim 5 and a Method of operating a spark ignited, with gaseous fuel operable internal combustion engine having the features of the preamble of claim 6.
Aus
dem Gebrauchsmuster
Aufgabe der Erfindung ist es demgegenüber, eine fremdgezündete, mit gasförmigem Kraftstoff betreibbare Brennkraftmaschine mit einer Kraftstoffversorgungsanlage zur Verfügung zu stellen, die ohne Druckminderer oder Druckregler eine gute Gaseinblasung mit der für den jeweiligen Betriebszustand notwendigen Gasmenge in einen Brennraum der Brennkraftmaschine gewährleistet.task the invention it is in contrast, a spark ignition, with gaseous Fuel operable internal combustion engine with a fuel supply system to disposal to provide, without pressure reducer or pressure regulator a good gas injection with the for the respective operating state necessary amount of gas in a combustion chamber ensures the internal combustion engine.
Diese Aufgabe wird durch eine Brennkraftmaschine mit den Merkmalen des Anspruchs 1 beziehungsweise des Anspruchs 5 und durch ein Verfahren zum Betrieb einer Brennkraftmaschine mit den Merkmalen des Anspruchs 6 gelöst.These Task is by an internal combustion engine with the characteristics of Claim 1 or claim 5 and by a method for operating an internal combustion engine having the features of the claim 6 solved.
Die erfindungsgemäße, fremdgezündete, mit gasförmigem Kraftstoff betreibbare, Brennkraftmaschine, die mindestens einen Brennraum und zumindest einen ersten Injektor für gasförmigen Kraftstoff aufweist, zeichnet sich dadurch aus, dass der zumindest eine erste Injektor durch gasförmigen Kraftstoff mit einem Druck beaufschlagbar ist, der ungefähr einem Druck in einem Gastank entspricht, und dass der gasförmige Kraftstoff durch den zumindest einen ersten Injektor direkt in den Brennraum einbringbar ist. Auf diese Weise wird der hohe Druck von ungefähr 200 bar, unter dem der gasförmige Kraftstoff im Gastank steht, dazu genutzt den Kraftstoff direkt in den Brennraum zu blasen und es wird eine einfach aufgebaute Vorrichtung zur Einbringung von gasförmigem Kraftstoff in den Brennraum bereitgestellt. Durch Entspannen des gasförmigen Kraftstoffs von hohem Druck im Injektor, der in unmittelbarer Brennraumnähe angeordnet ist, ist keinerlei Gefahr einer Vereisung des Injektors gegeben. Durch die Brennraumwärme wird ein Vereisen verhindert und durch die starke Entspannung des gasförmigen Kraftstoffs wird der Brennraum gleichzeitig von innen gekühlt.The inventive, spark-ignited, with gaseous fuel operable, internal combustion engine, the at least one combustion chamber and at least one first gaseous fuel injector, is characterized in that the at least one first injector by gaseous Fuel is pressurizable, which is about one Pressure in a gas tank corresponds, and that the gaseous fuel through the at least one first injector directly into the combustion chamber can be introduced. In this way, the high pressure of about 200 bar, below the gaseous Fuel is in the gas tank, to use the fuel directly to blow into the combustion chamber and it becomes a simply constructed device for the introduction of gaseous Fuel is provided in the combustion chamber. By relaxing the gaseous Fuel of high pressure in the injector, which is located in the immediate vicinity of the combustion chamber is, there is no risk of icing of the injector. Through the combustion chamber heat is prevented from icing and by the strong relaxation of the gaseous Fuel, the combustion chamber is cooled simultaneously from the inside.
In der Ausgestaltung der Erfindung sind zur Bestimmung von Druck und/oder Temperatur des gasförmigen Kraftstoffs ein Drucksensor und/oder ein Temperatursensor an zumindest einer Gasleitung stromauf des zumindest ersten Injektors vorgesehen. Durch die Erfassung des Druckes und der Temperatur des gasförmigen Kraftstoffs vor dem Injektor ist eine exakte Mengenzumessung mit Hilfe eines Steuergeräts einfach möglich.In the embodiment of the invention are for the determination of pressure and / or Temperature of the gaseous Fuel a pressure sensor and / or a temperature sensor on at least a gas line upstream of the at least first injector is provided. By the detection of the pressure and the temperature of the gaseous fuel In front of the injector is an exact Mengenzumessung with the help of a ECU just possible.
In einer weiteren Ausgestaltung der Erfindung ist zumindest ein zweiter Injektor je Brennraum vorgesehen, der flüssigen Otto-Kraftstoff in einen Ansaugkanal der Brennkraftmaschine abgibt. Dadurch ist es möglich, die Brennkraftmaschine mit einer weiteren Kraftstoffart zu betreiben und auch bei einer möglicherweise mangelhaften Versorgung mit gasförmigem Kraftstoff, die Brennkraftmaschine weiter zu betreiben. Die Möglichkeit zwei verschiedene Kraftstoffarten zu verwenden wird bivalente oder Bi-Fuel-Betriebsweise genannt.In Another embodiment of the invention is at least a second Injector per combustion chamber provided, the liquid gasoline fuel in one Suction channel of the internal combustion engine emits. This makes it possible for the Internal combustion engine to operate with another fuel and also at one possibly deficient supply of gaseous Fuel to continue to operate the internal combustion engine. The possibility Using two different fuel types is bivalent or bi-fuel mode of operation called.
In einer weiteren Ausgestaltung der Erfindung ist je Brennraum zumindest ein dritter Injektor vorgesehen, der flüssigen Kraftstoff direkt in den Brennraum der Brennkraftmaschine eingespritzt. Auf diese Weise kann zusätzlich zum direkt eingebrachten gasförmigen Kraftstoff noch flüssiger Kraftstoff direkt in den Brennraum eingespritzt werden. Damit ist ebenfalls eine bivalente oder Bi-Fuel-Betriebsweise gegeben, um je nach Verfügbarkeit zwischen unterschiedlichen Kraftstoffarten zu wechseln.In A further embodiment of the invention is at least each combustion chamber a third injector is provided, the liquid fuel directly in injected the combustion chamber of the internal combustion engine. In this way can additionally for directly introduced gaseous Fuel even more fluid Fuel will be injected directly into the combustion chamber. This is also A bivalent or bi-fuel mode of operation is given, subject to availability to switch between different fuel types.
Erfindungsgemäß ist je Brennraum zumindest ein Bi-Fuel-Einspritzventil durch gasförmigen Kraftstoff mit einem Druck beaufschlagbar, der ungefähr einem Druck in einem Gastank entspricht. Der gasförmige Kraftstoff ist durch das zumindest eine Bi-Fuel-Einspritzventil direkt in den Brennraum einbringbar, wobei durch das Bi-Fuel-Einspritzventil wahlweise oder zusätzlich auch flüssiger Otto-Kraftstoff in den Brennraum einbringbar ist. Bi-Fuel-Einspritzventile sind Einspritzventile, die zwei verschiedene Kraftstoffarten einspritzen können. In diesem Fall handelt es sich um flüssige und gasförmige Kraftstoffe, die durch zwei Zuleitungen zugeführt, aber durch eine Öffnung in den Brennraum eingespritzt werden. Damit ist ebenfalls eine bivalente oder Bi-Fuel-Betriebsweise gegeben, um je nach Verfügbarkeit zwischen unterschiedlichen Kraftstoffarten zu wechseln.According to the invention is ever Combustion chamber at least a bi-fuel injection valve by gaseous fuel pressurizable to about a pressure in a gas tank equivalent. The gaseous Fuel is through the at least one bi-fuel injection valve can be introduced directly into the combustion chamber, with the bi-fuel injector optionally or additionally also more fluid Otto fuel is introduced into the combustion chamber. Bi-Fuel Injectors are injectors that inject two different types of fuel can. In this case, these are liquid and gaseous fuels, fed by two leads, but through an opening be injected into the combustion chamber. This is also a bivalent or bi-fuel mode of operation given depending on availability to change different fuel types.
Das Verfahren zum Betrieb einer fremdgezündeten, mit gasförmigem Kraftstoff betreibbaren Brennkraftmaschine zeichnet sich dadurch aus, dass der zumindest eine erste Injektor beziehungsweise das zumindest eine Bi-Fuel-Einspritzventil durch gasförmigen Kraftstoff mit einem Druck beaufschlagt wird, der dem Druck im Gastank entspricht. Weiterhin bringt der zumindest eine erste Injektor beziehungsweise das zumindest eine Bi-Fuel-Einspritzventil den gasförmigen Kraftstoff direkt in einen Brennraum der Brennkraftmaschine ein. Dabei wird die in den Brennraum der Brennkraftmaschine eingebrachte Kraftstoffmenge durch eine Änderung einer Taktrate des zumindest einen ersten Injektors beziehungsweise des zumindest einen Bi-Fuel-Einspritzventils eingestellt. Zur Regelung der eingeblasenen Kraftstoffmenge sind Sensoren für einen Druck und eine Temperatur des gasförmigen Kraftstoffs in der Hochdruckleitung vorgesehen. Mit diesem Verfahren ist es möglich, eine direkteinspritzende, mit gasförmigem Kraftstoff betriebene Brennkraftmaschine zu betreiben, ohne zwischen dem Hochdruckgastank und den Injektoren einen Druckminderer und eine Niederdruckleitung vorsehen zu müssen. Durch den Einsatz von Injektoren, die hochdruckfähig sind, ist es möglich die Kraftstoffversorgungsanlage wesentlich einfacher zu gestalten.The method of operating a spark ignited gaseous fuel Internal combustion engine is characterized in that the at least one first injector or the at least one bi-fuel injection valve is acted upon by gaseous fuel with a pressure corresponding to the pressure in the gas tank. Furthermore, the at least one first injector or the at least one bi-fuel injection valve directly introduces the gaseous fuel into a combustion chamber of the internal combustion engine. In this case, the fuel quantity introduced into the combustion chamber of the internal combustion engine is set by a change in a clock rate of the at least one first injector or of the at least one bi-fuel injection valve. To control the amount of fuel injected, sensors are provided for a pressure and a temperature of the gaseous fuel in the high-pressure line. With this method, it is possible to operate a direct-injection fueled with gaseous fuel internal combustion engine without having to provide a pressure reducer and a low-pressure line between the high-pressure gas tank and the injectors. By using injectors that are high-pressure capable, it is possible to make the fuel supply system much easier.
In einer Ausgestaltung der Erfindung wird die in den Brennraum eingespritzte Kraftstoffmenge durch einen regelbaren Hub des zumindest einen ersten Injektors beziehungsweise des zumindest einen Bi-Fuel-Einspritzventils eingestellt. Durch eine Hubregelung des zumindest einen ersten Injektors beziehungsweise des zumindest einen Bi-Fuel-Einspritzventils lässt sich auf einfache Weise die Menge des eingeblasenen Kraftstoffs regeln. Hubregelung bedeutet, dass eine Düsennadel im zumindest einen ersten Injektor beziehungsweise des zumindest einen Bi-Fuel-Einspritzventils in ihrem Hub geregelt werden kann. Das heißt, es sind außer den Zuständen offen und geschlossen auch gezielt Zwischenwerte einstellbar. Durch den regelbaren Hub der Düsennadel des Injektors beziehungsweise des zumindest einen Bi-Fuel-Einspritzventils lassen sich sowohl große als auch kleine Kraftstoffmengen zeitunabhängig exakt in den Brennraum einblasen.In An embodiment of the invention is injected into the combustion chamber Fuel quantity by a controllable stroke of the at least one first Injector or the at least one bi-fuel injection valve set. By a stroke control of the at least one first injector or The at least one bi-fuel injection valve can be easily regulate the amount of injected fuel. Stroke control means that a nozzle needle in at least one first injector or at least a bi-fuel injection valve can be regulated in their stroke. This means, it is not the states open and closed also intermediate values can be set. By the controllable stroke of the nozzle needle of the injector or the at least one bi-fuel injection valve can be both great as well as small amounts of fuel exactly independent of time into the combustion chamber blow.
In einer weiteren Ausgestaltung der Erfindung wird ein Kraftstoffdruck in der zumindest einen Gasleitung stromauf des zumindest einen ersten Injektors beziehungsweise des zumindest einen Bi-Fuel-Einspritzventils von einem Drucksensor bestimmt. Dessen Werte werden einem Steuergerät zugeführt, das damit die Taktrate und/oder gegebenenfalls den Hub des zumindest einen ersten Injektors beziehungsweise des zumindest einen Bi-Fuel-Einspritzventils steuert. Wenn der Kraftstoffdruck in der Hochdruckleitung durch einen Drucksensor bestimmt wird, kann ein Steuergerät auf Grund dieser Messwerte die Taktrate und/oder den Hub des ersten Injektors beziehungsweise des zumindest einen Bi-Fuel-Einspritzventils steuern und damit die exakte Kraftstoffmenge zum richtigen Zeitpunkt in den Brennraum einbringen.In Another embodiment of the invention is a fuel pressure in the at least one gas line upstream of the at least one first Injector or the at least one bi-fuel injection valve determined by a pressure sensor. Whose values are fed to a control unit, the so that the clock rate and / or optionally the hub of at least a first injector or the at least one bi-fuel injection valve controls. When the fuel pressure in the high-pressure line through a pressure sensor is determined, a control unit based on of these measured values, the clock rate and / or the stroke of the first injector or the at least one bi-fuel injection valve and thus control the introduce exact amount of fuel into the combustion chamber at the right time.
In einer weiteren Ausgestaltung der Erfindung wird eine Kraftstofftemperatur in der zumindest einen Gasleitung stromauf des zumindest einen ersten Injektors beziehungsweise des zumindest einen Bi-Fuel-Einspritzventils von einem Temperatursensor bestimmt. Dessen Werte werden einem Steuergerät zugeführt, das damit die Taktrate und/oder gegebenenfalls den Hub des zumindest einen ersten Injektors beziehungsweise des zumindest einen Bi-Fuel-Einspritzventils steuert. Somit kann die einzublasende Gasmenge über die Taktrate und/oder den Hub des Injektors noch genauer bestimmt werden. Die Druck- und Temperatursensoren sind an der Hochdruckleitung nach Möglichkeit nahe an den Injektoren vorzusehen.In A further embodiment of the invention is a fuel temperature in the at least one gas line upstream of the at least one first Injector or the at least one bi-fuel injection valve determined by a temperature sensor. Whose values are fed to a control unit, the so that the clock rate and / or optionally the hub of at least a first injector or the at least one bi-fuel injection valve controls. Thus, the amount of gas to be injected via the clock rate and / or the stroke be determined in more detail of the injector. The pressure and temperature sensors are close to the injectors on the high pressure line if possible provided.
Weitere Vorteile, Merkmale und Merkmalskombinationen ergeben sich aus der Beschreibung und der Zeichnung. Ausführungsbeispiele der Erfindung sind in der Zeichnung vereinfacht dargestellt und in der nachfolgenden Beschreibung näher erläutert.Further Advantages, features and combinations of features result from the Description and the drawing. Embodiments of the invention are shown simplified in the drawing and in the following Description closer explained.
Dabei zeigen:there demonstrate:
In
Weiterhin
ist ein Steuergerät
Die
Kraftstoffversorgungsanlage
- – eine Tankanlage
21 , die mehrere Hochdruckgastanks22 und Abschaltventilen23 aufweist, - – eine
Hochdruckleitung
24 , - – ein
Sicherheitsmagnetventil
25 , - – mindestens
einen ersten Injektor
26 für jeden Brennraum13 , - – einen
Drucksensor
27 und - – einen
zweiten Temperatursensor
28 .
- - a tank plant
21 holding several high-pressure gas tanks22 and shut-off valves23 having, - - a high pressure line
24 . - - a safety solenoid valve
25 . - - At least a first injector
26 for every combustion chamber13 . - - a pressure sensor
27 and - - a second temperature sensor
28 ,
Das
Brenngas, beispielsweise Erdgas, wird durch einen Füllanschluss
Durch
den Einsatz der kostengünstigen,
getakteten Injektoren
In
In
In
Claims (9)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
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DE102006048498A DE102006048498A1 (en) | 2006-10-13 | 2006-10-13 | A spark-ignited internal combustion engine operable with gaseous fuel with a fuel supply system and method for operating an internal combustion engine |
PCT/EP2007/008107 WO2008046486A1 (en) | 2006-10-13 | 2007-09-18 | Spark-ignition internal combustion engine, which can be operated with gaseous fuel, having a fuel supply system, and method for operating an internal combustion engine |
Applications Claiming Priority (1)
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DE102006048498A DE102006048498A1 (en) | 2006-10-13 | 2006-10-13 | A spark-ignited internal combustion engine operable with gaseous fuel with a fuel supply system and method for operating an internal combustion engine |
Publications (1)
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DE102006048498A1 true DE102006048498A1 (en) | 2008-04-17 |
Family
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DE102006048498A Withdrawn DE102006048498A1 (en) | 2006-10-13 | 2006-10-13 | A spark-ignited internal combustion engine operable with gaseous fuel with a fuel supply system and method for operating an internal combustion engine |
Country Status (2)
Country | Link |
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DE (1) | DE102006048498A1 (en) |
WO (1) | WO2008046486A1 (en) |
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DE202013102660U1 (en) | 2013-06-19 | 2013-06-26 | Ford Global Technologies, Llc | Gas storage system for gaseous fuels |
DE102013016503A1 (en) | 2013-10-04 | 2014-08-14 | Daimler Ag | Method for operating reciprocating internal combustion engine for motor vehicle, involves performing insufflation within range from including four thundered twenty up to ninety degrees of crank angles, before top dead center of piston |
DE102013211483A1 (en) | 2013-06-19 | 2014-12-24 | Ford Global Technologies, Llc | Gas storage system for gaseous fuels and method for operating a gas storage system |
DE102013211485A1 (en) | 2013-06-19 | 2014-12-24 | Ford Global Technologies, Llc | Gas storage system for gaseous fuels and method for operating a gas storage system |
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DE102012001650B4 (en) | 2012-01-27 | 2019-06-19 | Audi Ag | Method for operating an internal combustion engine and internal combustion engine |
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DE202013102660U1 (en) | 2013-06-19 | 2013-06-26 | Ford Global Technologies, Llc | Gas storage system for gaseous fuels |
DE102013211483A1 (en) | 2013-06-19 | 2014-12-24 | Ford Global Technologies, Llc | Gas storage system for gaseous fuels and method for operating a gas storage system |
DE102013211485A1 (en) | 2013-06-19 | 2014-12-24 | Ford Global Technologies, Llc | Gas storage system for gaseous fuels and method for operating a gas storage system |
DE102013211483B4 (en) | 2013-06-19 | 2019-07-11 | Ford Global Technologies, Llc | Gas storage system for gaseous fuels |
DE102013016503A1 (en) | 2013-10-04 | 2014-08-14 | Daimler Ag | Method for operating reciprocating internal combustion engine for motor vehicle, involves performing insufflation within range from including four thundered twenty up to ninety degrees of crank angles, before top dead center of piston |
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CN105317604A (en) * | 2014-06-24 | 2016-02-10 | 丰田自动车株式会社 | Fuel injection system for internal combustion engine |
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WO2016168875A1 (en) * | 2015-04-21 | 2016-10-27 | Ge Jenbacher Gmbh & Co Og | Dual-fuel internal combustion engine |
CN107787399A (en) * | 2015-04-21 | 2018-03-09 | Ge延巴赫两合无限公司 | bi-fuel internal combustion engine |
US20180087461A1 (en) * | 2015-04-21 | 2018-03-29 | Ge Jenbacher Gmbh & Co Og | Dual-fuel internal combustion engine |
US10352259B2 (en) | 2015-04-21 | 2019-07-16 | Innio Jenbacher Gmbh & Co Og | Dual-fuel internal combustion engine |
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