DE102008004078A1 - Test method for ignition fluid injectors - Google Patents
Test method for ignition fluid injectors Download PDFInfo
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- DE102008004078A1 DE102008004078A1 DE102008004078A DE102008004078A DE102008004078A1 DE 102008004078 A1 DE102008004078 A1 DE 102008004078A1 DE 102008004078 A DE102008004078 A DE 102008004078A DE 102008004078 A DE102008004078 A DE 102008004078A DE 102008004078 A1 DE102008004078 A1 DE 102008004078A1
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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
- F02M65/00—Testing fuel-injection apparatus, e.g. testing injection timing ; Cleaning of fuel-injection apparatus
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B44—DECORATIVE ARTS
- B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
- B44C1/00—Processes, not specifically provided for elsewhere, for producing decorative surface effects
- B44C1/18—Applying ornamental structures, e.g. shaped bodies consisting of plastic material
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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
- F02M65/00—Testing fuel-injection apparatus, e.g. testing injection timing ; Cleaning of fuel-injection apparatus
- F02M65/001—Measuring fuel delivery of a fuel injector
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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
- F02B19/00—Engines characterised by precombustion chambers
- F02B19/10—Engines characterised by precombustion chambers with fuel introduced partly into pre-combustion chamber, and partly 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
- F02B19/00—Engines characterised by precombustion chambers
- F02B19/10—Engines characterised by precombustion chambers with fuel introduced partly into pre-combustion chamber, and partly into cylinder
- F02B19/1019—Engines characterised by precombustion chambers with fuel introduced partly into pre-combustion chamber, and partly into cylinder with only one pre-combustion chamber
- F02B19/108—Engines characterised by precombustion chambers with fuel introduced partly into pre-combustion chamber, and partly into cylinder with only one pre-combustion chamber with fuel injection at least into pre-combustion chamber, i.e. injector mounted directly in the pre-combustion chamber
- F02B19/1085—Engines characterised by precombustion chambers with fuel introduced partly into pre-combustion chamber, and partly into cylinder with only one pre-combustion chamber with fuel injection at least into pre-combustion chamber, i.e. injector mounted directly in the pre-combustion chamber controlling fuel 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
- F02D19/0602—Control of components of the fuel supply system
- F02D19/0607—Control of components of the fuel supply system to adjust the fuel mass or volume flow
- F02D19/061—Control of components of the fuel supply system to adjust the fuel mass or volume flow by controlling fuel injectors
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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
- F02D19/0631—Determining the fuel pressure, temperature or flow, the fuel tank fill level or a valve position 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
- F02D19/0663—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
- F02D19/10—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 peculiar to compression-ignition engines in which the main fuel is gaseous
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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
- F02D19/10—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 peculiar to compression-ignition engines in which the main fuel is gaseous
- F02D19/105—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 peculiar to compression-ignition engines in which the main fuel is gaseous operating in a special mode, e.g. in a liquid fuel only mode for starting
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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
- F02D35/00—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for
- F02D35/02—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for on interior conditions
- F02D35/027—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for on interior conditions using knock sensors
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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
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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
- F02D41/22—Safety or indicating devices for abnormal conditions
- F02D41/221—Safety or indicating devices for abnormal conditions relating to the failure of actuators or electrically driven elements
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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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/722—Decorative or ornamental articles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B44—DECORATIVE ARTS
- B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
- B44C3/00—Processes, not specifically provided for elsewhere, for producing ornamental structures
- B44C3/02—Superimposing layers
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06Q—DECORATING TEXTILES
- D06Q1/00—Decorating textiles
- D06Q1/10—Decorating textiles by treatment with, or fixation of, a particulate material, e.g. mica, glass beads
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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
- F02D19/0644—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 the gaseous fuel being hydrogen, ammonia or carbon monoxide
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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
- F02D19/0647—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 the gaseous fuel being liquefied petroleum gas [LPG], liquefied natural gas [LNG], compressed natural gas [CNG] or dimethyl ether [DME]
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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
- F02D2200/10—Parameters related to the engine output, e.g. engine torque or engine speed
- F02D2200/1015—Engines misfires
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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
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/14—Introducing closed-loop corrections
- F02D41/1438—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor
- F02D41/1444—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases
- F02D41/1446—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases the characteristics being exhaust temperatures
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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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- 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
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Abstract
Die Erfindung betrifft ein Prüfverfahren für Zündfluid-Injektoren, bei dem während einer Betriebsphase gleicher Last die Einspritzdauer des Zündfluid-Injektors variiert wird. Dadurch gelangt mehr oder weniger Zündfluid in den Brennraum eines Zylinders, wodurch die Abgastemperatur des betreffenden Zylinders steigt oder fällt. Dies ermöglicht es, nicht ordnungsgemäß funktionierende Zündfluid-Injektoren während eines Flüssigkraftstoffbetriebs zu erkennen.The invention relates to a test method for ignition fluid injectors, in which the injection duration of the ignition fluid injector is varied during an operating phase of the same load. As a result, more or less ignition fluid passes into the combustion chamber of a cylinder, whereby the exhaust gas temperature of the cylinder in question rises or falls. This makes it possible to detect improperly functioning ignition fluid injectors during liquid fuel operation.
Description
Die Erfindung betrifft ein Prüfverfahren für Zündfluid-Injektoren eines Mehrstoffmotors mit Zuführeinrichtungen zur wahlweisen Zufuhr von flüssigen und gasförmigen Kraftstoffen in einen Brennraum, mindestens einem Zündfluid-Injektor für die Zufuhr von Zündfluid sowie einer Messeinrichtung zum Erfassen einer Abgastemperatur und einer Auswerteeinrichtung zum Auswerten der von der Messeinrichtung erfassten Abgastemperatur.The The invention relates to a test method for ignition fluid injectors a multi-fuel engine with feeders for optional supply of liquid and gaseous Fuels in a combustion chamber, at least one Zündfluid injector for the Supply of ignition fluid and a measuring device for detecting an exhaust gas temperature and an evaluation device for evaluating the of the measuring device detected exhaust gas temperature.
Beim Betrieb eines Mehrstoffmotors im Gasbetrieb wird ein in der Regel mageres Gas-Luft-Gemisch im Brennraum durch die Zündenergie einer geringen Menge eines Zündfluids gezündet. Dieses Zündfluid wird durch ein geeignetes Zuführsystem mittels eines Zündfluid-Injektors beispielsweise kurz vor dem oberen Totpunkt eines Kolbens einer Hubkolbenmaschine in den Brennraum eingebracht.At the Operation of a multi-fuel engine in gas mode is usually one lean gas-air mixture in the combustion chamber due to the ignition energy a small amount of ignition fluid ignited. This ignition fluid is by a suitable delivery system means a Zündfluid injector for example, just before the top dead center of a piston Reciprocating engine introduced into the combustion chamber.
Bekannte Systeme zur Zufuhr eines Zündfluids mittels eines Injektors in den Brennraum einer Hubkolbenmaschine ermöglichen einen nahezu beliebig gestaltbaren Einspritzvorgang. So sind Einspritzbeginn und Einspritzende sowie der Volumenstrom des Zündfluids durch den Injektor frei wählbar. Ferner sind Mehrstoffmotoren zumeist mit elektronischen Motorsteuerungen ausgestattet, welche laufend Betriebsdaten des Motors, wie die Temperaturen von Betriebsstoffen und Abgas, Leistungswerte, Verbrennungsparameter, Drehzahlen, Drücke oder dergleichen erfassen.Known Systems for supplying an ignition fluid by means of an injector into the combustion chamber of a reciprocating engine enable an almost arbitrarily configurable injection process. So are start of injection and end of injection as well as the volume flow of the ignition fluid through the injector freely selectable. Further Multi-fuel engines are mostly with electronic engine controls equipped, which running operating data of the engine, such as the temperatures of operating materials and exhaust gas, performance values, combustion parameters, Speeds, pressures or the like.
Beschädigungen oder ein Zusetzen der Injektoren durch Verbrennungsrückstände oder unerkannte Fehler in der Zündfluidzufuhr können zum Ausfall der Zündfluideinspritzung führen. Im Gasbetrieb führt diese zu einem Aussetzen der Verbrennung in den betroffenen Zylindern. Dies führt zum einen zu einem Leistungsabfall des Motors, und zum anderen gelangt das unverbrannte Gas-Luft-Gemisch in die Abgasanlage, wo es unter ungünstigen lokalen Randbedingungen sogar Explosionen auslösen kann. Ein Aussetzen der Verbrennung im Gasbetrieb soll daher vermieden werden. Vorteilhaft wäre es daher, schon vor dem Umschalten in den Gasbetrieb die Funktionsfähigkeit der Zündfluideinspritzung überprüfen zu können.damage or clogging of the injectors by combustion residues or unrecognized errors in the Zündfluidzufuhr can to the failure of Zündfluideinspritzung to lead. In gas mode leads this to a suspension of combustion in the affected cylinders. this leads to on the one hand to a power loss of the engine, and on the other passes the unburned gas-air mixture into the exhaust system, where it is under unfavorable local conditions even trigger explosions can. A suspension of combustion in gas operation should therefore be avoided become. It would be advantageous Therefore, even before switching to gas operation, the functionality to check the Zündfluideinspritzung.
Eine Prüfung von Zündfluid-Injektoren schon vor dem Umschalten eines Mehrstoffmotors auf Gasbetrieb bereits während des vorangehenden Flüssigkraftstoffbetriebs, ist bisher nicht möglich. Eine Fehlfunktion von Zündfluid-Injektoren wird bislang erst aufgrund eines Leistungsabfalls und der abnehmenden Laufruhe des Motors im Gasbetrieb bzw. aufgrund von Gasanteilen im Abgas erkannt. Die Lokalisierung beschädigter bzw. zugesetzter Zündfluid-Injektoren wird bisher in Form einer Sichtinspektion oder aufgrund der Leistungserfassung bzw. des Laufverhaltens der einzelnen Zylinder vorgenommen.A exam of ignition fluid injectors even before switching a multi-fuel engine to gas operation already while the preceding liquid fuel operation, is not possible yet. A malfunction of Zündfluid injectors is so far only due to a loss of performance and the decreasing smoothness of the engine in the gas mode or due to gas components in the exhaust gas recognized. The location of damaged or added ignition fluid injectors is currently in the form of a visual inspection or due to the performance recording or the running behavior of the individual cylinders made.
Die vorliegende Erfindung stellt sich daher die Aufgabe, ein Prüfverfahren für Zündfluid-Injektoren zur Verfügung zu stellen, das eine Funktionsprüfung von Zündfluid-Injektoren eines Mehrstoffmotors bereits während eines Flüssigkraftstoffbetriebs ermöglicht.The The present invention therefore has as its object a test method for ignition fluid injectors to disposal to make that a functional test of ignition fluid injectors a multi-fuel engine already during a liquid fuel operation allows.
Diese Aufgabe wird erfindungsgemäß durch ein Verfahren gemäß Anspruch 1 gelöst. Vorteilhafte Weiterbildungen sind Gegenstand der Unteransprüche.These The object is achieved by a Method according to claim 1 solved. Advantageous developments are the subject of the dependent claims.
Das erfindungsgemäße Verfahren umfasst dabei folgende Schritte:
- a) Betreiben eines Mehrstoffmotors in einem Flüssigkraftstoffbetrieb, wobei mindestens ein Zündfluid-Injektor Zündfluid in einen Brennraum eines Zylinders des Mehrstoffmotors einspritzt,
- b) Variieren der Einspritzdauer und/oder des Einspritzvolumens eines oder mehrerer Zündfluid-Injektoren, und
- c) Auswerten der Werte der von der Messeinrichtung während der Variation erfassten Abgastemperatur.
- a) operating a multi-fuel engine in a liquid fuel operation, wherein at least one ignition fluid injector injects ignition fluid into a combustion chamber of a cylinder of the multi-fuel engine,
- b) varying the injection duration and / or the injection volume of one or more ignition fluid injectors, and
- c) evaluating the values of the exhaust gas temperature detected by the measuring device during the variation.
Das erfindungsgemäße Verfahren eignet sich für Mehrstoffmotoren, welche mit verschiedenen flüssigen sowie gasförmigen Kraftstoffen betrieben werden können. Als flüssige Kraftstoffe kommen dabei bevorzugt zündwillige Kraftstoffe mit einer Cetanzahl größer 30 in Betracht, welche einen Betrieb des Motors nach dem Dieselprinzip ermöglichen. Ferner eigenen sich auch flüssige Kraftstoffe mit einer geringeren Zündwilligkeit, d. h. mit einer Cetanzahl kleiner 30, für deren Zündung zusätzliche Einrichtungen wie beispielsweise Zündkerzen erforderlich sind.The inventive method is suitable for Multi-fuel engines, which with different liquid and gaseous fuels can be operated. As liquid Fuels are preferably ignitable fuels with a Cetane number greater than 30 in Considering which operation of the engine on the diesel principle enable. Furthermore, are also liquid Fuels with lower ignitability, d. H. with a Cetane number less than 30, for their ignition additional Facilities such as spark plugs are required.
Mehrstoffmotoren, die sich für die Anwendung des erfindungsgemäßen Verfahrens eignen, sind so ausgeführt, dass sie von einem Betrieb mit einem flüssigen Kraftstoff in eine Betriebsart mit einem vorzugsweise zündunwilligen, mageren Kraftstoff-Luft-Gemisch, welches bevorzugt gasförmigen Kraftstoff aufweist, umschaltbar sind. Im weiteren wird von einem gasförmigen Kraftstoff ausgegangen, wobei das Verfahren ebenfalls für Zündfluid-Injektoren zur Zündung magerer Flüssigkraftstoff-Luft-Gemische anwendbar ist. Als Verbrennungsgase für solche Mehrstoffmotoren können z. B. Erd-, Flüssig-, Holz-, Bio-, Deponie-, Grubengase oder Wasserstoff eingesetzt werden.Multifuel engines for themselves the application of the method according to the invention are suitable, are designed that they are operating from a liquid fuel into a mode of operation with a preferably ignoring, lean fuel-air mixture, which preferably is gaseous fuel has, are switchable. Furthermore, it is a gaseous fuel The method is also for Zündfluid injectors for ignition leaner Liquid fuel-air mixtures is applicable. As combustion gases for such multi-fuel engines z. B. earth, liquid, wood, Bio, landfill, mine gases or hydrogen are used.
Das im Gasbetrieb bzw. Magerbetrieb dem Brennraum zugeführte magere Gas-Luft-Gemisch enthält üblicherweise einen deutlichen Luftüberschuss, weshalb zur Fremdzündung ein Zündfluid in diesen Brennraum eingespritzt wird, dessen Zündenergie das Gas-Luft-Gemisch entzündet. Als Zündfluid wird üblicherweise ein für diesen Zweck geeigneter Flüssigkraftstoff verwendet, welcher bevorzugt auch in einem Flüssigkraftstoffbetrieb des Mehrstoffmotors eingesetzt wird.The lean gas-air mixture supplied to the combustion chamber during gas operation or lean operation usually contains a clear excess of air, which is why an ignition fluid is injected into the combustion chamber for spark ignition this combustion chamber is injected whose ignition energy ignites the gas-air mixture. The ignition fluid used is usually a suitable liquid fuel for this purpose, which is preferably used in a liquid fuel operation of the multi-fuel engine.
Ein zur Durchführung des erfindungsgemäßen Prüfverfahrens geeigneter Mehrstoffmotor weist eine erste Zuführeinrichtung zur Zufuhr von flüssigen Kraftstoff in einen ersten Brennraum auf. Ein Zylinder des Mehrstoffmotors kann dabei einen oder mehrere Brennräume aufweisen. Als erster Brennraum ist im folgenden der Hauptbrennraum eines Zylinders bezeichnet. Die Zuführeinrichtung kann auch für die Zufuhr von mehreren verschiedenen flüssigen Kraftstoffen geeignet sein. Die erste Zuführeinrichtung weist bevorzugt eine Pumpeinrichtung, Kraftstoffleitungen und entweder eine Einspritzeinrichtung, die den Kraftstoff direkt in den Brennraum des Mehrstoffmotors einbringt, oder Einrichtungen zur Bildung und Zufuhr eines Kraftstoffluftgemisches auf, welche den flüssigen Kraftstoff erst nach der Gemischbildung in den Brennraum einbringt.One to carry out the test method according to the invention suitable multi-fuel motor has a first feeding device for the supply of liquid fuel in a first combustion chamber. A cylinder of the multi-fuel engine can have one or more combustion chambers. As the first combustion chamber is referred to below the main combustion chamber of a cylinder. The feeder can also for the supply of several different liquid fuels suitable be. The first feeder preferably has a pumping device, fuel lines and either an injector that injects the fuel directly into the combustion chamber of the multi-fuel engine, or facilities for education and Supplying a fuel air mixture, which is the liquid fuel only after the mixture formation in the combustion chamber brings.
Weiter weist ein derartiger Mehrstoffmotor eine zweite Zuführeinrichtung zur Zufuhr von gasförmigen Kraftstoff in einen Brennraum des Motors auf, welche bevorzugt so ausgebildet ist, dass die Bildung eines vorzugsweise mageren Gas-Luft-Gemisches bereits vor der Zufuhr in den Brennraum erfolgt.Further such a multi-fuel engine has a second feeder for the supply of gaseous Fuel in a combustion chamber of the engine, which is preferably so is formed that the formation of a preferably lean gas-air mixture already before being fed into the combustion chamber.
Der Mehrstoffmotor weist ferner eine dritte Zuführeinrichtung für die Zufuhr eines Zündfluids in einen Brennraum des Motors auf. Die dritte Zuführeinrichtung weist bevorzugt für jeden der Zylinder des Mehrstoffmotors einen oder mehrere Zündfluid-Injektoren auf. Dabei kann ein Zündfluid-Injektor so angeordnet sein, dass das Zündfluid direkt in den ersten Brennraum eines Zylinders des Mehrstoffmotors eingespritzt wird. Der Zündfluid-Injektor kann jedoch auch in einem zweiten Brennraum, beispielsweise einer sogenannten Vorkammer angeordnet sein. Das Zündfluid wird im Brennraum entweder durch Selbstzündung oder mittels einer geeigneten Zündeinrichtung gezündet. Ist der Zündfluid-Injektor in einem zweiten Brennraum des Zylinders angeordnet, so weist dieser eine oder mehrere Verbindungen zum ersten Brennraum auf, durch welche die Zündenergie vom zweiten Brennraum in den ersten Brennraum übertragen wird, um das sich dort befindliche Gas-Luft-Gemisch zu entzünden. In einem zweiten Brennraum können abhängig von der Brennraumgestaltung auch mehrere Zündfluid-Injektoren angeordnet sein, und ferner können mit dem ersten Brennraum eines Zylinders auch mehrere zweite Brennräume verbunden sein. Die Zündfluid-Injektoren führen bevorzugt sowohl im Flüssigkraftstoff- wie auch im Gasbetrieb dem Zylinder Zündfluid zu, um ein Zusetzen der Injektoren zu vermeiden. Das Verfahren eignet sich ebenfalls für Zündfluid-Injektoren, welche mit dem Injektor der ersten Zuführeinrichtung integriert ausgebildet sind und deren Einspritzung unabhängig von der Einspritzfunktion der ersten Zuführeinrichtung steuerbar ist.Of the Multi-fuel motor also has a third feed device for the supply an ignition fluid in a combustion chamber of the engine. The third feeder preferably for each of the cylinders of the multi-fuel engine has one or more ignition fluid injectors on. In this case, a Zündfluid injector be arranged so that the ignition fluid directly into the first combustion chamber of a cylinder of the multi-fuel engine is injected. The ignition fluid injector However, in a second combustion chamber, such as a be arranged so-called pre-chamber. The ignition fluid is in the combustion chamber either by auto-ignition or by means of a suitable ignition device ignited. Is the ignition fluid injector arranged in a second combustion chamber of the cylinder, it has this one or more connections to the first combustion chamber, through which the ignition energy of second combustion chamber is transferred to the first combustion chamber to the itself to ignite there located gas-air mixture. In a second combustion chamber can dependent from the combustion chamber design also arranged several Zündfluid injectors be, and further can connected to the first combustion chamber of a cylinder and a plurality of second combustion chambers be. The ignition fluid injectors lead preferred both in the liquid fuel as well as in gas operation the cylinder ignition fluid to clogging to avoid the injectors. The method is also suitable for ignition fluid injectors, which integrally formed with the injector of the first feeder are and their injection independent of the injection function the first feeder is controllable.
Für die Anwendung des erfindungsgemäßen Prüfverfahrens geeignete Mehrstoffmotoren weisen ferner, bevorzugt als Teil der Motorsteuerung, eine Messeinrichtung auf, welche eine Abgastemperatur des Mehrstoffmotors erfasst. Bevorzugt erfasst diese Messeinrichtung die Abgastemperatur jedes einzelnen Zylinders des Mehrstoffmotors. Für die Durchführung des Verfahrens ist ferner eine Auswerteeinrichtung zur Auswertung der von der Messeinrichtung erfassten Werte für die Abgastemperatur vorgesehen. Dabei ist die Messeinrichtung sowie die Auswerteeinrichtung bevorzugt so ausgebildet, dass auch kurzzeitige Veränderungen der Abgastemperatur während des Prüfverfahrens erfass- und auswertbar sind. Vorzugsweise können Veränderungen der Abgastemperatur bereits nach wenigen Zylinderhüben bestimmt werden.For the application the test method according to the invention suitable multi-fuel engines also have, preferably as part of Motor control, a measuring device, which has an exhaust gas temperature of Multi-fuel engine recorded. Preferably, this measuring device detects the exhaust gas temperature of each cylinder of the multi-fuel engine. For the execution of the method is also an evaluation device for evaluation provided by the measuring device values for the exhaust gas temperature. In this case, the measuring device and the evaluation is preferred designed so that even short-term changes in exhaust gas temperature while of the test procedure can be detected and evaluated. Preferably, changes in the exhaust gas temperature already after a few cylinder strokes be determined.
Bei der Durchführung des erfindungsgemäßen Verfahrens wird der Motor in einem Flüssigkraftstoffbetrieb gefahren. Wie bereits erwähnt sind die zu prüfenden Zündfluid-Injektoren bevorzugt auch im Flüssigkraftstoffbetrieb aktiv. Vorzugsweise wird das Prüfverfahren durchgeführt, während der Mehrstoffmotor unter Niedriglast bzw. Teillast betrieben wird, bevorzugt in einem Bereich von 5 bis 25% Last. In diesem Bereich können mit dem erfindungsgemäßen Prüfverfahren besonders aussagefähige Ergebnisse erzielt werden.at the implementation the method according to the invention the engine is in a liquid fuel operation hazards. As already mentioned are the ones to be tested Zündfluid injectors preferably also in liquid fuel operation active. Preferably, the test method carried out, while the multi-fuel engine is operated under low load or partial load, preferably in a range of 5 to 25% load. In this area can with the test method according to the invention particularly meaningful Results are achieved.
Gemäß einer Ausführung der vorliegenden Erfindung wird beim Prüfvorgang wird während einer Betriebsphase mit möglichst gleichbleibender Last die Einspritzdauer des Zündfluid-Injektors variiert. Im Falle einer verlängerten Einspritzdauer gelangt bei gleichbleibenden Volumenstrom durch den Zündfluid-Injektor mehr Zündfluid in den ersten oder, abhängig von der Motorbauart, einen zweiten Brennraum eines Zylinders, wodurch die Abgastemperatur des betreffenden Zylinders steigt.According to one execution The present invention is used in the testing process during an operating phase with as possible constant load, the injection duration of the Zündfluid injector varies. In case of a prolonged injection period passes at the same volume flow through the Zündfluid injector more ignition fluid in the first or, depending of the engine type, creating a second combustion chamber of a cylinder the exhaust gas temperature of the cylinder in question increases.
In gleicher Weise ist es möglich, die Einspritzdauer des Zündfluid-Injektors zu verkürzen, wodurch eine geringere Menge Zündfluid in den Brennraum gelangt, was zu einer Senkung der Abgastemperatur führt.In same way it is possible the injection duration of the ignition fluid injector To shorten, resulting in a smaller amount of ignition fluid enters the combustion chamber, resulting in a reduction of the exhaust gas temperature leads.
Dabei ist es möglich, den Einspritzbeginn der verlängerten Einspritzung nach vorne zu verlegen und/oder das Einspritzende nach hinten. Im umgekehrten Fall einer verkürzten Einspritzdauer kann der Einspritzbeginn nach hinten und/oder das Einspritzende nach vorne verschoben werden.there Is it possible, the start of injection of the prolonged To move injection to the front and / or the end of injection after rear. In the reverse case of a shortened injection duration, the beginning of injection moved backwards and / or the injection end to the front.
In gleicher Weise ist es möglich, das Einspritzvolumen des Zündfluids mittels einer Veränderung des Volumenstroms durch den Injektor zu variieren, um ebenfalls mehr oder weniger Zündfluid in dem Brennraum des Mehrstoffmotors in Flüssigkraftstoffbetrieb zu fördern, was ebenfalls eine Erhöhung bzw. Senkung der Abgastemperatur des Zylinders bewirkt.In same way it is possible the injection volume of the ignition fluid by means of a change the volume flow through the injector to vary as well more or less ignition fluid in the combustion chamber of the multi-fuel engine in liquid fuel mode to promote what also an increase or Reduction of the exhaust gas temperature of the cylinder causes.
In einer bevorzugten Ausgestaltung des erfindungsgemäßen Verfahrens wird die Einspritzdauer des überprüften Injektors gemäß eines vorbestimmten Prüfzyklus variiert, bei dem die Einspritzung beispielsweise von einer minimalen Einspritzdauer des Zündfluid-Injektors bis zur maximalen Einspritzdauer des Zündfluid-Injektors gesteigert wird. Bei einer maximalen Einspritzdauer steigt bei funktionierendem Zündfluid-Injektor die Abgastemperatur über den Mittelwert der zugehörigen Last an, bei minimaler Einspritzdauer sinkt die Abgastemperatur unter den Mittelwert dieser Last ab.In a preferred embodiment of the method according to the invention is the injection duration of the checked injector according to one predetermined test cycle varies, for example, the injection of a minimum Injection duration of the ignition fluid injector increased to the maximum injection duration of the Zündfluid injector becomes. At a maximum injection duration increases with functioning Zündfluid injector the exhaust gas temperature over the mean of the associated Load, with minimal injection duration, the exhaust gas temperature drops below the mean of that load.
In dem Fall, dass ein Zündfluid-Injektor aufgrund einer Fehlfunktion zu viel, zu wenig oder kein Zündfluid in den Brennraum fördert, erfasst die Messeinrichtung eine zu starke, zu schwache bzw. keine Änderung der Abgastemperatur am Mehrstoffmotor. Damit kann bereits vor einer Aktivierung des Gasbetriebs eines Mehrstoffmotors die Funktionsfähigkeit der Zündfluid-Injektoren geprüft werden.In in the event that an ignition fluid injector too much, too little or no ignition fluid due to a malfunction into the combustion chamber, the measuring device detects too strong, too weak or no change the exhaust gas temperature at the multi-fuel engine. This can already be done before Activation of the gas operation of a multi - fuel engine, the functionality of the Zündfluid injectors checked become.
Sind in einem Zylinder mehrere Zündfluid-Injektoren angeordnet, so wird der Funktionstest für die einzelnen Zündfluid-Injektoren bevorzugt nacheinander durchgeführt. Vorzugsweise wird in gleicher Weise verfahren, falls mittels der am Mehrstoffmotor angeordneten Messeinrichtung nicht die Abgastemperatur einzelner Zylinder, sondern nur von einer Mehrzahl oder allen Zylindern des Mehrstoffmotors erfasst wird.are in a cylinder several ignition fluid injectors arranged, so is the functional test for the individual Zündfluid injectors preferably carried out in succession. Preferably, the procedure is the same, if by means of the multi-fuel engine arranged measuring device not the exhaust gas temperature single cylinder, but only a majority or all cylinders of the multi-fuel engine is detected.
Die Auswerteeinrichtung dient zur Auswertung der von der Messeinrichtung erfassten Abgastemperaturwerte und bevorzugt der Zuordnung der erfassten Messwerte zu den geprüften Zündfluid-Injektoren zur Lokalisierung von nicht funktionierenden Zündfluid-Injektoren. Die durch das erfindungsgemäße Prüfverfahren erhaltene Auswertungsergebnisse ermöglichen es, ein Umschalten des Mehrstoffmotors in den Gasbetrieb zu vermeiden, falls aufgrund von Zündfluid-Injektor-Ausfällen eine fehlerhafte oder gar aussetzende Verbrennung zu erwarten ist.The Evaluation device is used for the evaluation of the measuring device recorded exhaust gas temperature values and preferably the assignment of the detected Measured values for the tested Zündfluid injectors for the localization of non-functioning ignition fluid injectors. By the test method according to the invention obtained evaluation results make it possible to switch of the multi-fuel engine to avoid gas operation, if due of ignition fluid injector failures faulty or even suspending combustion is to be expected.
Durch die aufgrund des Auswertungsergebnisses erhaltene Kenntnis der nicht oder nicht ordnungsgemäß funktionierenden Zündfluid-Injektoren können ferner beispielsweise auch nur einzelne Zylinder des Mehrstoffmotors nicht mit Gas beaufschlagt werden. Falls mehrere Zündfluid-Injektoren in einem Zylinder angeordnet sind, kann die Einspritzdauer und/oder das Einspritzvolumen dieser anderen Zündfluid-Injektoren vergrößert werden. Schließlich unterstützen die Prüfergebnisse die Planung und Durchführung erforderlicher Wartungsmaßnahmen.By the knowledge of the result obtained on the basis of the result of the evaluation or not working properly Ignition fluid injectors may also be used For example, only individual cylinders of the multi-fuel engine not be acted upon with gas. If several Zündfluid injectors in one Cylinders are arranged, the injection duration and / or the injection volume these other ignition fluid injectors be enlarged. Finally, the support test results the planning and implementation required maintenance.
Weitere Vorteile, Merkmale und Anwendungsmöglichkeiten der vorliegenden Erfindung ergeben sich aus der nachfolgenden Beschreibung in Zusammenhang mit den Figuren. Es zeigt:Further Advantages, features and applications of the present Invention will become apparent from the following description in conjunction with the figures. It shows:
In
Im
Zylinderkopf
Der
Ladungswechsel des Motors folgt in bekannter Weise über die
Ein- und Auslassventile (
Während der
Durchführung
eines Prüfzyklus,
in welchem die Einspritzdauer und/oder das Einspritzvolumen des
Zündfluids-Injektors
Zum
Zeitpunkt t3 wird die Einspritzdauer des Zündfluid-Injektors
- 22
- Zylindercylinder
- 33
- Zylinderkopfcylinder head
- 44
- Kolbenpiston
- 55
- Pleuelpleuel
- 66
- Kraftstoffinjektorfuel injector
- 77
- KraftstoffleitungFuel line
- 88th
- KraftstoffpumpeFuel pump
- 99
- erster Brennraumfirst combustion chamber
- 1111
- zweiter Brennraumsecond combustion chamber
- 1212
- Verbindungskanäleconnecting channels
- 1313
- Zündfluid-InjektorZündfluid injector
- 1414
- Zündfluid-LeitungZündfluid line
- 1616
- ZündfluidpumpeZündfluidpumpe
- 1717
- Einlassventilintake valve
- 1818
- Auslassventiloutlet valve
- 2020
- GemischbildungseinheitMixture formation unit
- 2121
- GasversorgungsleitungGas supply line
- 2525
- Auswerteeinrichtungevaluation
- 2626
- Temperatursensortemperature sensor
Claims (18)
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102008004078A DE102008004078A1 (en) | 2008-01-12 | 2008-01-12 | Test method for ignition fluid injectors |
| JP2009004052A JP4663017B2 (en) | 2008-01-12 | 2009-01-09 | Inspection method for fluid fuel injection system for ignition |
| FI20095010A FI123067B (en) | 2008-01-12 | 2009-01-09 | Test procedure for lighter fluid injectors |
| KR1020090001918A KR101381257B1 (en) | 2008-01-12 | 2009-01-09 | Testing method for ignitable fluid-injector |
| CN2009100029066A CN101482066B (en) | 2008-01-12 | 2009-01-12 | Test method for ignition fluid injectors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102008004078A DE102008004078A1 (en) | 2008-01-12 | 2008-01-12 | Test method for ignition fluid injectors |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE102008004078A1 true DE102008004078A1 (en) | 2009-07-23 |
Family
ID=40329468
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE102008004078A Withdrawn DE102008004078A1 (en) | 2008-01-12 | 2008-01-12 | Test method for ignition fluid injectors |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JP4663017B2 (en) |
| KR (1) | KR101381257B1 (en) |
| CN (1) | CN101482066B (en) |
| DE (1) | DE102008004078A1 (en) |
| FI (1) | FI123067B (en) |
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| WO2011154609A3 (en) * | 2010-06-11 | 2012-01-26 | Wärtsilä Finland Oy | Control of an internal combustion engine |
| GB2491592A (en) * | 2011-06-07 | 2012-12-12 | Gm Global Tech Operations Inc | Method of diagnosing and recovering an injector failure in an internal combustion engine. |
| WO2016046448A1 (en) * | 2014-09-24 | 2016-03-31 | Wärtsilä Finland Oy | Method for starting up a dual fuel engine |
| EP2927466A4 (en) * | 2012-12-03 | 2016-08-17 | Volvo Truck Corp | DEVICE FOR DIAGNOSING ANOMALY |
| WO2016134709A1 (en) * | 2015-02-26 | 2016-09-01 | Schaeffler Technologies AG & Co. KG | Method for simulating extreme or defective solenoid valves for demonstrating the failure effect and for detecting faults in order to certify a vehicle diagnosis system |
| EP3279453A1 (en) * | 2016-08-05 | 2018-02-07 | Caterpillar Motoren GmbH & Co. KG | Method for testing an ignition device of an internal combustion engine |
| DE102017215774B3 (en) | 2017-09-07 | 2019-01-24 | Man Diesel & Turbo Se | Dual-fuel engine and method for functional testing of a dual-fuel engine |
| CN109790792A (en) * | 2016-09-05 | 2019-05-21 | 洋马株式会社 | Engine device |
| EP3502445A1 (en) * | 2017-12-22 | 2019-06-26 | Caterpillar Motoren GmbH & Co. KG | Method for starting a gaseous fuel combustion engine |
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| DE102011010508B4 (en) * | 2011-02-07 | 2016-10-27 | Audi Ag | Method and device for detecting the quality of fuel in a fuel tank of an internal combustion engine |
| JP5813483B2 (en) | 2011-11-30 | 2015-11-17 | 愛三工業株式会社 | Fuel supply control device for bi-fuel internal combustion engine and fuel switching method in bi-fuel internal combustion engine |
| US8925518B1 (en) * | 2014-03-17 | 2015-01-06 | Woodward, Inc. | Use of prechambers with dual fuel source engines |
| DE102015003012B4 (en) * | 2015-03-06 | 2025-02-13 | Man Energy Solutions Se | Method and control device for functional testing of ignition fluid injectors |
| KR102110626B1 (en) * | 2015-12-18 | 2020-05-14 | 한국조선해양 주식회사 | Low load operation system of dual fuel engine and low load operation using the same method |
| CN110469439A (en) * | 2019-08-30 | 2019-11-19 | 攀钢集团矿业有限公司 | The method of delivery temperature test judgement electromagnetic fuel injector performance |
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- 2008-01-12 DE DE102008004078A patent/DE102008004078A1/en not_active Withdrawn
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- 2009-01-09 KR KR1020090001918A patent/KR101381257B1/en not_active Expired - Fee Related
- 2009-01-09 JP JP2009004052A patent/JP4663017B2/en not_active Expired - Fee Related
- 2009-01-09 FI FI20095010A patent/FI123067B/en not_active IP Right Cessation
- 2009-01-12 CN CN2009100029066A patent/CN101482066B/en not_active Expired - Fee Related
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| WO2018024855A1 (en) * | 2016-08-05 | 2018-02-08 | Caterpillar Motoren Gmbh & Co. Kg | Method for testing an ignition device of an internal combustion engine |
| EP3279453A1 (en) * | 2016-08-05 | 2018-02-07 | Caterpillar Motoren GmbH & Co. KG | Method for testing an ignition device of an internal combustion engine |
| EP3508713A4 (en) * | 2016-09-05 | 2019-09-11 | Yanmar Co., Ltd. | MOTOR DEVICE |
| CN109790792A (en) * | 2016-09-05 | 2019-05-21 | 洋马株式会社 | Engine device |
| CN109790792B (en) * | 2016-09-05 | 2021-12-03 | 洋马动力科技有限公司 | Engine device |
| DE102017215774B3 (en) | 2017-09-07 | 2019-01-24 | Man Diesel & Turbo Se | Dual-fuel engine and method for functional testing of a dual-fuel engine |
| EP3502445A1 (en) * | 2017-12-22 | 2019-06-26 | Caterpillar Motoren GmbH & Co. KG | Method for starting a gaseous fuel combustion engine |
| US10801426B2 (en) | 2017-12-22 | 2020-10-13 | Caterpillar Motoren Gmbh & Co. Kg | Method for starting a gaseous fuel combustion engine |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4663017B2 (en) | 2011-03-30 |
| FI123067B (en) | 2012-10-31 |
| KR101381257B1 (en) | 2014-04-02 |
| CN101482066A (en) | 2009-07-15 |
| FI20095010A0 (en) | 2009-01-09 |
| KR20090077875A (en) | 2009-07-16 |
| FI20095010L (en) | 2009-07-13 |
| CN101482066B (en) | 2013-06-12 |
| JP2009168026A (en) | 2009-07-30 |
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