DE102007056819A1 - Method for switching a marine engine from heavy oil to diesel oil operation - Google Patents

Method for switching a marine engine from heavy oil to diesel oil operation Download PDF

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Publication number
DE102007056819A1
DE102007056819A1 DE102007056819A DE102007056819A DE102007056819A1 DE 102007056819 A1 DE102007056819 A1 DE 102007056819A1 DE 102007056819 A DE102007056819 A DE 102007056819A DE 102007056819 A DE102007056819 A DE 102007056819A DE 102007056819 A1 DE102007056819 A1 DE 102007056819A1
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Prior art keywords
diesel
heavy oil
oil
heavy
mixture
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DE102007056819A
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German (de)
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Thomas Porep - Bernd Mamerow GbR (vertretungsberechtiger Gesellschafter Thomas Porep 23775 Großenbrode)
THOMAS POREP BERND MAMEROW GbR
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Thomas Porep - Bernd Mamerow GbR (vertretungsberechtiger Gesellschafter Thomas Porep 23775 Großenbrode)
THOMAS POREP BERND MAMEROW GbR
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Priority to DE102007056819A priority Critical patent/DE102007056819A1/en
Priority to PCT/DE2008/001761 priority patent/WO2009067970A1/en
Priority to PCT/DE2008/001935 priority patent/WO2009065397A1/en
Publication of DE102007056819A1 publication Critical patent/DE102007056819A1/en
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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
    • 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
    • F02D19/0605—Control of components of the fuel supply system to adjust the fuel pressure or temperature
    • 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
    • F02D19/0613—Switch-over from one fuel to another
    • F02D19/0618—Switch-over from one fuel to another depending on the engine's or vehicle's position, e.g. on/off road or proximity to a harbor
    • 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
    • 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
    • F02D19/0657—Heavy or light fuel oils; Fuels characterised by their impurities such as sulfur content or differences in grade, e.g. for ships
    • 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
    • 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
    • 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
    • F02M31/00—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture
    • F02M31/02—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture for heating
    • F02M31/16—Other apparatus for heating fuel
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D24/00—Control of viscosity
    • G05D24/02—Control of viscosity characterised by the use of electric means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H21/00—Use of propulsion power plant or units on vessels
    • B63H21/12—Use of propulsion power plant or units on vessels the vessels being motor-driven
    • B63H21/14—Use of propulsion power plant or units on vessels the vessels being motor-driven relating to internal-combustion engines
    • 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
    • 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
    • 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
    • F02D2200/0611—Fuel type, fuel composition or fuel quality
    • 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
    • F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F02M37/0047—Layout or arrangement of systems for feeding fuel
    • F02M37/0064—Layout or arrangement of systems for feeding fuel for engines being fed with multiple fuels or fuels having special properties, e.g. bio-fuels; varying the fuel composition
    • 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
    • F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F02M37/0047—Layout or arrangement of systems for feeding fuel
    • F02M37/007—Layout or arrangement of systems for feeding fuel characterised by its use in vehicles, in stationary plants or in small engines, e.g. hand held tools
    • 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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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)
  • Fuel-Injection Apparatus (AREA)

Abstract

Verfahren zum Umschalten eines Schiffsmotors von Dieselöl- auf Schwerölbetrieb, gekennzeichnet durch die Schritte: a) Betreiben des Schiffsmotors mit Dieselöl, b) Beimengen von Schweröl zum Dieselöl, c) Messen der Viskosität des Dieselöl/Schweröl-Gemischs und Temperieren des Dieselöl/Schweröl-Gemischs auf eine Temperatur, die eine an die Einspritzdüsen des Schiffsmotors angepasste Viskosität des Dieselöl/Schweröl-Gemischs erzeugt, bevor das Dieselöl/Schweröl-Gemisch den Einspritzdüsen zugeführt wird, d) Betreiben des Schiffsmotors mit dem temperierten Dieselöl/Schweröl-Gemisch, e) Erhöhen des Schwerölanteils im Dieselöl/Schweröl-Gemisch und f) Wiederholen der Schritte c) bis e), bis der Schiffsmotor ausschließlich mit Schweröl betrieben wird.A method for switching a marine engine from diesel oil to heavy oil operation, characterized by the steps of: a) operating the marine engine with diesel oil, b) adding heavy fuel oil to the diesel oil, c) measuring the viscosity of the diesel oil / heavy oil mixture and tempering the diesel oil / heavy oil Mixture to a temperature which produces a viscosity of the diesel / heavy oil mixture adapted to the injection nozzles of the marine engine before the diesel oil / heavy oil mixture is supplied to the injection nozzles, d) operating the marine engine with the tempered diesel / heavy oil mixture, e) Increasing the heavy oil content in the diesel oil / heavy oil mixture and f) repeating steps c) to e) until the marine engine is operated exclusively with heavy oil.

Description

Die Erfindung betrifft ein Verfahren zum Umschalten eines Schiffsmotors von Dieselöl- auf Schwerölbetrieb.The The invention relates to a method for switching a marine engine of Diesel oil on heavy oil operation.

Derzeit verwenden ungefähr 80% der Welthandelsschiffe Schweröl (heavy fuel oil; HFO) als Kraftstoff zum Betrieb ihrer Schiffsmotoren. Die Verwendung von Schweröl ist jedoch ökologisch bedenklich, da dieses einen hohen Schwefelgehalt aufweist und die Verbrennung von Schweröl in Schiffsmotoren damit zu einer hohen SOx-Emission führt.Currently, about 80% of world merchant ships use heavy fuel oil (HFO) as fuel to power their marine engines. However, the use of heavy oil is ecologically questionable, since it has a high sulfur content and the combustion of heavy fuel oil in marine engines so that x emissions leads to a high SO.

Daher werden zunehmend Sondergebiete ausgezeichnet (z. B. die Ostsee) in denen im Schiffsbetrieb nur Kraftstoffe mit geringem Schwefelgehalt eingesetzt werden dürfen (max. 1,5 Gew.-% Schwefel). Damit sind viele Reeder gezwungen ihre Schiffe von Schweröl auf Dieselöl (marine diesel oil; MDO) umzustellen, das einen Schwefelgehalt von lediglich ca. 0,1 Gew.-% oder weniger aufweist.Therefore Special areas are increasingly being awarded (eg the Baltic Sea) in which only low-sulfur fuels are used in ship operation (maximum 1.5% sulfur by weight). There are many Shipowners forced their ships from heavy fuel oil to diesel (marine diesel oil, MDO), which has a sulfur content of only about 0.1 wt .-% or less.

Die Umstellung des Schiffsmotorbetriebs von Schweröl auf Dieselöl kann einerseits vollständig erfolgen, andererseits ist aber auch aus der DD 66 529 eine Mischeinrichtung bekannt, mit der ein Schiffsmotor von Schweröl- auf Dieselbetrieb umgeschaltet und so nach Bedarf und in Abhängigkeit von dem befahrenen Gebiet mit Schweröl oder mit Dieselöl betrieben werden kann.The conversion of the marine engine operation of heavy oil on diesel oil can be done completely on the one hand, but on the other hand is also from the DD 66 529 a mixing device with which a marine engine of heavy oil switched to diesel operation and so can be operated as needed and depending on the area with heavy oil or diesel oil.

Bei der Umstellung von Schweröl- auf Dieselölbetrieb oder umgekehrt besteht jedoch das Problem, dass Schweröl gegenüber Dieselöl eine höhere Viskosität aufweist, sodass besondere Maßnahmen bei der Umschaltung in der Kraftstoffversorgung ergriffen werden müssen. Insbesondere wurde daher bereits vorgeschlagen, die Zuleitung des Kraftstoffs von einem ersten Dieselöl enthaltenden Tank auf einen zweiten Schweröl enthaltenden Tank vollständig umzuschalten und die Viskositätsänderung des Kraftstoffs durch Temperaturanpassung zu kompensieren.at the conversion from heavy oil to diesel oil operation or vice versa, however, there is the problem that heavy oil compared to diesel oil a higher viscosity so that special measures in the switching need to be taken in the fuel supply. Especially was therefore already proposed to supply the fuel from a tank containing a first diesel oil to a second Completely refuel tank containing heavy oil and the viscosity change of the fuel Temperature adjustment to compensate.

Dabei ist vorgesehen, dass das Schweröl bei einer Umschaltung von Dieselöl auf Schweröl derart temperiert wird, dass das Schweröl eine Viskosität aufweist, die an die Einspritzdüsen des Schiffsmotors angepasst ist. Bei einer Umschaltung von Schweröl auf Dieselöl hingegen wird regelmäßig keine Temperierung des Dieselöls notwenig sein, wenn die Einspritzdüsen für die Viskosität von Dieselöl eingerichtet sind.there is provided that the heavy oil at a switching is heated by diesel oil to heavy oil such that the heavy oil has a viscosity that adapted to the injection nozzles of the marine engine. When switching from heavy fuel oil to diesel oil In contrast, no tempering of the Diesel be necessary if the injectors set up for the viscosity of diesel oil are.

Das Umschalten von Dieselöl auf viskoseres Schweröl mit der bekannten Mischvorrichtung hat sich jedoch in der Praxis aufgrund unzureichender Viskositätsanpassung und den dadurch verursachten Maschinenschäden als nachteilig erwiesen.The Switching from diesel oil to viscous heavy oil However, with the known mixing device has in practice due to insufficient viscosity adjustment and thereby caused machine damage proved disadvantageous.

Aufgabe der Erfindung ist es daher ein Verfahren zum Umschalten eines Schiffsmotors von Dieselöl- auf Schwerölbetrieb zu schaffen, das eine Schädigung des Motors bei der Umstellung von Schweröl- auf Dieselbetrieb ausschließt.task The invention is therefore a method for switching a marine engine to create from diesel oil to heavy oil operation, damage to the engine during the conversion of heavy oil excludes diesel operation.

Die Aufgabe wird durch das Verfahren mit den Merkmalen von Anspruch 1 bzw. durch das Verfahren mit den Merkmalen von Anspruch 2 gelöst. Die Unteransprüche geben vorteilhafte Ausgestaltungen der Erfindung wieder.The The object is achieved by the method having the features of claim 1 or by the method having the features of claim 2. The Subclaims give advantageous embodiments of the invention again.

Die Erfindung wird anhand des Umschaltvorgangs von Dieselöl auf Schweröl erklärt, wobei es sich versteht, dass der Umschaltvorgang auch in umgekehrter Reihenfolge durchgeführt werden kann.The Invention is based on the switching of diesel oil explained on heavy oil, it being understood that the switching process also performed in reverse order can be.

Grundgedanke der Erfindung ist es den Schiffsmotor zunächst nur mit einer Kraftstoffart, z. B. Dieselöl, zu betreiben. Soll der Schiffsmotor nun von Dieselöl- auf Schwerölbetrieb umgeschaltet werden, kann dieses manuell, ferngesteuert oder automatisch bei Erreichen einer vorbestimmten geografischen Position eingeleitet werden. Zunächst wird dem Dieselöl eine vorbestimmte Menge Schweröl beigemengt und bevorzugt in einer von der direkten Kraftstoffzuführung separaten Kammer oder einem separaten Kreislauf vorgehalten, wobei zunächst die Viskosität des Dieselöl/Schweröl-Gemischs gemessen wird und dieses Dieselöl/Schweröl-Gemisch auf eine Temperatur gebracht wird, die für die Zuleitung in die Einspritzdüsen des Schiffsmotors geeignet ist. Erst nach Erreichen dieser Temperatur wird das Dieselöl/Schweröl-Gemisch dem Schiffsmotor zugeführt und der Schiffsmotor mit diesem Dieselöl/Schweröl-Gemisch betrieben.basic idea The invention is the ship's engine initially only with a fuel, z. As diesel oil to operate. Should the marine engine now from diesel oil to heavy oil operation This can be switched on manually, remotely or automatically Reaching a predetermined geographic position initiated become. First, the diesel oil is a predetermined Amount of heavy fuel added and preferred in one of the direct fuel supply separate chamber or one kept separate circuit, where initially the viscosity the diesel oil / heavy oil mixture is measured and this diesel oil / heavy oil mixture to a temperature is brought for the supply to the injectors the ship's engine is suitable. Only after reaching this temperature The diesel / heavy oil mixture is the ship's engine supplied and the marine engine with this diesel / heavy oil mixture operated.

Darauf wird der Schwerölanteil im Dieselöl/Schweröl-Gemisch erhöht, woraufhin wiederum die Viskosität gemessen, die Temperatur zur Erreichung des von den Einspritzdüsen vorgegebenen Viskositätswerts entsprechend erhöht und das weitere Dieselöl/Schweröl-Gemisch dem Schiffsmotor zur Verbrennung zugeleitet wird.Thereon is the heavy oil content in the diesel / heavy oil mixture increases, whereupon the viscosity is measured again, the temperature to reach from the injectors Increased viscosity value accordingly increased and the other diesel / heavy oil mixture the Ship engine is sent for combustion.

Dieser Vorgang wird solange wiederholt bis der Anteil des Dieselöls im Dieselöl/Schweröl-Gemisch auf Null gesunken ist und der Schiffsmotor ausschließlich mit Schweröl, d. h. 0% Dieselöl und 100% Schweröl, betrieben wird.This The process is repeated until the proportion of diesel oil in the diesel oil / heavy oil mixture dropped to zero is and the marine engine exclusively with heavy oil, d. H. 0% diesel oil and 100% heavy oil, operated becomes.

Die Schiffsmotorenanlage ist für das erfindungsgemäße Verfahren bevorzugt derart auszulegen, dass genügend Kraftstoff im jeweiligen Dieselöl/Schweröl-Verhältnis zur Verfügung steht ohne dass es zu Engpässen in der Kraftstoffversorgung kommt. Dieses ist insbesondere dann wichtig, wenn nach einem bevorzugten Ausführungsbeispiel der Erfindung das Verfahren abgebrochen und der Schiffsmotor mit dem zuletzt eingestellten Dieselöl/Schweröl-Gemisch betrieben werden soll. Dieses ist dann wichtig, wenn die gemessene Temperatur im Verhältnis zur gemessenen Viskosität des Dieselöl/Schweröl-Gemischs von einem vorbestimmten Temperatur/Viskositäts-Verhältnis für ein entsprechendes Dieselöl/Schweröl-Gemischverhältnis besonders bevorzugt um ein vorbestimmtes Maß abweicht und etwaige Motorschäden drohen.The marine engine system is preferably designed for the inventive method such that enough fuel in the respective diesel oil / heavy oil ratio is available without causing bottlenecks in the fuel supply. This is particularly important when, according to a preferred embodiment, the Er tion the process aborted and the ship's engine to be operated with the last set diesel / heavy oil mixture. This is important when the measured temperature in relation to the measured viscosity of the diesel / heavy oil mixture from a predetermined temperature / viscosity ratio for a corresponding diesel / heavy oil mixture ratio, particularly preferably deviates by a predetermined amount and threaten any engine damage.

Alternativ kann in diesem Fall auch vorgesehen sein, dass der Schiffsmotor gestoppt wird, wenn die gemessene Temperatur im Verhältnis zur gemessenen Viskosität des Dieselöl/Schweröl-Gemischs von einem vorbestimmten Temperatur/Viskositäts-Verhältnis für ein entsprechendes Dieselöl/Schweröl-Gemischverhältnis bevorzugt um ein vorbestimmtes Maß abweicht.alternative can also be provided in this case that the ship engine is stopped when the measured temperature in proportion to the measured viscosity of the diesel / heavy oil mixture of a predetermined temperature / viscosity ratio for a corresponding diesel oil / heavy oil mixture ratio preferably deviates by a predetermined amount.

In jedem der genannten Ausnahmefälle ist jedenfalls vorgesehen, dass ein Alarm ausgegeben wird, wobei es sich um einen optischen, akustischen oder sonstigen Alarm handeln kann, der das Personal an Bord des Schiffes auf die Fehlfunktion hinweist.In any of the exceptions that an alarm is issued, which is an optical, Acoustic or other alarm that can affect the staff indicates the malfunction on board the ship.

Besonders bevorzugt kann das Verfahren aufgrund entsprechender Vorversuche so ausgestaltet sein, dass die Veränderung der Zusammensetzung des Dieselöl/Schweröl-Gemischs mittels einer programmierbaren Rampenfunktion erfolgt, wobei beispielsweise in dieser Rampenfunktion die Erfahrungswerte in Bezug auf die Zeitdauer zur Temperaturanpassung des Dieselöl/Schwerölgemischs in ihrer jeweiligen Zusammensetzung berücksichtigt werden.Especially The process may preferably be based on appropriate preliminary tests be so designed that the change in composition of the diesel / heavy oil mixture by means of a programmable Ramp function takes place, for example, in this ramp function the empirical values with regard to the duration of time for temperature adaptation of the diesel oil / heavy fuel mixture in their respective Composition taken into account.

Schließlich ist auch bevorzugt vorgesehen, dass die Temperierungsleistung in Abhängigkeit von der innerhalb eines vorbestimmten Zeitraums gemessenen Veränderung der Viskosität des Dieselöl/Schweröl-Gemischs geregelt wird. Das bedeutet, dass beispielsweise bei einer bei der Umstellung von Dieselöl zu Schweröl auftretenden großen Viskositätszunahme die Leistung der entsprechenden zur Temperierung des Dieselöl/Schweröl-Gemischs vorgesehen Elemente derart hochreguliert wird, dass eine möglichst schnelle Temperierung des Dieselöl/Schweröl-Gemischs erfolgt, damit dem Schiffsmotor ausreichend Kraftstoff mit motorenverträglicher Viskosität zur Verfügung gestellt werden kann.After all is also preferably provided that the Temperierungsleistung in Depending on the within a predetermined period of time measured change in the viscosity of the diesel / heavy oil mixture is regulated. This means that, for example, one at the Conversion of diesel oil to heavy oil occurring large viscosity increase the performance of the corresponding for temperature control of the diesel oil / heavy oil mixture provided elements is so highly regulated that a possible rapid temperature control of the diesel oil / heavy oil mixture takes place, so that the ship engine sufficient fuel with engine compatible viscosity can be made available.

ZITATE ENTHALTEN IN DER BESCHREIBUNGQUOTES INCLUDE IN THE DESCRIPTION

Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Zitierte PatentliteraturCited patent literature

  • - DD 66529 [0004] - DD 66529 [0004]

Claims (7)

Verfahren zum Umschalten eines Schiffsmotors von Dieselöl- auf Schwerölbetrieb, gekennzeichnet durch die Schritte: a) Betreiben des Schiffmotors mit Dieselöl, b) Beimengen von Schweröl zum Dieselöl, c) Messen der Viskosität des Dieselöl/Schweröl-Gemischs und Temperieren des Dieselöl/Schweröl-Gemischs auf eine Temperatur, die eine an die Einspritzdüsen des Schiffsmotors angepasste Viskosität des Dieselöl/Schweröl-Gemischs erzeugt, bevor das Dieselöl/Schweröl-Gemisch den Einspritzdüsen zugeführt wird, d) Betreiben des Schiffsmotors mit dem temperierten Dieselöl/Schweröl-Gemisch, e) Erhöhen des Schwerölanteils im Dieselöl/Schweröl-Gemisch und f) Wiederholen der Schritte c) bis e) bis der Schiffsmotor ausschließlich mit Schweröl betrieben wird.Method for switching a marine engine from diesel oil to heavy oil operation through the steps: a) operating the marine engine with diesel oil, b) Adding heavy fuel oil to diesel oil, c) measuring the viscosity of the diesel oil / heavy oil mixture and tempering the diesel oil / heavy oil mixture to a temperature that points to the injectors of the Ship's engine adapted viscosity of the diesel / heavy oil mixture generated before the diesel / heavy oil mixture the Injectors is supplied, d) operate of the marine engine with the tempered diesel oil / heavy oil mixture, e) Increasing the heavy oil content in the diesel oil / heavy oil mixture and f) repeating steps c) to e) until the ship's engine is operated exclusively with heavy oil. Verfahren zum Umschalten eines Schiffsmotors von Schweröl- auf Dieselölbetrieb, gekennzeichnet durch die Schritte: a) Betreiben des Schiffmotors mit Schweröl, b) Beimengen von Dieselöl zum Schweröl, c) Messen der Viskosität des Dieselöl/Schweröl-Gemischs und Temperieren des Dieselöl/Schweröl-Gemischs auf eine Temperatur, die eine an die Einspritzdüsen des Schiffsmotors angepasste Viskosität des Dieselöl/Schweröl-Gemischs erzeugt, bevor das Dieselöl/Schweröl-Gemisch den Einspritzdüsen zugeführt wird, d) Betreiben des Schiffsmotors mit dem temperierten Dieselöl/Schweröl-Gemisch, e) Erhöhen des Dieselölanteils im Dieselöl/Schweröl-Gemisch und f) Wiederholen der Schritte c) bis e) bis der Schiffsmotor ausschließlich mit Dieselöl betrieben wird.Method for switching a marine engine of Heavy oil on diesel oil operation, marked through the steps: a) operating the marine engine with heavy oil, b) Mixing of diesel oil with heavy fuel oil, c) measuring the viscosity of the diesel oil / heavy oil mixture and tempering the diesel oil / heavy oil mixture to a temperature that points to the injectors of the Ship's engine adapted viscosity of the diesel / heavy oil mixture generated before the diesel / heavy oil mixture the Injectors is supplied, d) operate of the marine engine with the tempered diesel oil / heavy oil mixture, e) Increasing the diesel oil content in the diesel oil / heavy oil mixture and f) repeating steps c) to e) until the ship's engine is operated exclusively with diesel oil. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Verfahren bei Abweichen der gemessenen Temperatur im Verhältnis zur gemessenen Viskosität des Dieselöl/Schweröl-Gemischs von einem vorbestimmten Temperatur/Viskositäts-Verhältnis für ein entsprechendes Dieselöl/Schweröl-Gemischverhältnis beendet und der Schiffsmotor mit dem zuletzt eingestellten Dieselöl/Schweröl-Gemisch betrieben wird.Method according to one of the preceding claims, characterized in that the method in deviation of the measured Temperature in relation to the measured viscosity of the diesel / heavy oil mixture of a predetermined temperature / viscosity ratio for a corresponding diesel oil / heavy oil mixture ratio finished and the ship engine with the last set diesel oil / heavy oil mixture is operated. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Schiffsmotor bei Abweichen der gemessenen Temperatur im Verhältnis zur gemessenen Viskosität des Dieselöl/Schweröl-Gemischs von einem vorbestimmten Temperatur/Viskositäts-Verhältnis für ein entsprechendes Dieselöl/Schweröl-Gemischverhältnis gestoppt wird.Method according to one of the preceding claims, characterized in that the ship engine in deviation of the measured temperature in relation to the measured viscosity of the diesel / heavy oil mixture of a predetermined Temperature / viscosity ratio for a corresponding diesel oil / heavy oil mixture ratio is stopped. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass bei Abweichen der gemessenen Temperatur im Verhältnis zur gemessenen Viskosität des Dieselöl/Schweröl-Gemischs von einem vorbestimmten Temperatur/Viskositäts-Verhältnis für ein entsprechendes Dieselöl/Schweröl-Gemischverhältnis ein Alarm ausgegeben wird.Method according to one of the preceding claims, characterized in that when the measured temperature deviates in relation to the measured viscosity of the diesel / heavy oil mixture from a predetermined temperature / viscosity ratio for a corresponding diesel oil / heavy oil mixture ratio an alarm is issued. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Veränderung der Zusammensetzung des Dieselöl/Schweröl-Gemischs mittels einer programmierbaren Rampenfunktion erfolgt.Method according to one of the preceding claims, characterized in that the change in the composition of the diesel / heavy oil mixture by means of a programmable Ramp function takes place. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Temperierungsleistung in Abhängigkeit von der innerhalb eines vorbestimmten Zeitraums gemessenen Veränderung der Viskosität des Dieselöl/Schweröl-Gemischs geregelt wird.Method according to one of the preceding claims, characterized in that the Temperierungsleistung in dependence from the change measured within a predetermined period of time the viscosity of the diesel oil / heavy oil mixture is regulated.
DE102007056819A 2007-11-23 2007-11-23 Method for switching a marine engine from heavy oil to diesel oil operation Withdrawn DE102007056819A1 (en)

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DE102007056819A DE102007056819A1 (en) 2007-11-23 2007-11-23 Method for switching a marine engine from heavy oil to diesel oil operation
PCT/DE2008/001761 WO2009067970A1 (en) 2007-11-23 2008-10-29 Method for switching a marine engine from heavy fuel oil to diesel oil operation
PCT/DE2008/001935 WO2009065397A1 (en) 2007-11-23 2008-11-24 Method for switching a marine engine from heavy fuel oil to diesel oil operation

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