DE102006037644A1 - Internal combustion engine for diesel fuel and vegetable oil, has separate tanks for both different fuels, whose outlets locks three-way valve - Google Patents
Internal combustion engine for diesel fuel and vegetable oil, has separate tanks for both different fuels, whose outlets locks three-way valve Download PDFInfo
- Publication number
- DE102006037644A1 DE102006037644A1 DE102006037644A DE102006037644A DE102006037644A1 DE 102006037644 A1 DE102006037644 A1 DE 102006037644A1 DE 102006037644 A DE102006037644 A DE 102006037644A DE 102006037644 A DE102006037644 A DE 102006037644A DE 102006037644 A1 DE102006037644 A1 DE 102006037644A1
- Authority
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- Germany
- Prior art keywords
- internal combustion
- combustion engine
- way valve
- vegetable oil
- fuel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
- F02D19/0615—Switch-over from one fuel to another being initiated by automatic means, e.g. based on engine or vehicle operating conditions
-
- 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
- F02B69/00—Internal-combustion engines convertible into other combustion-engine type, not provided for in F02B11/00; Internal-combustion engines of different types characterised by constructions facilitating use of same main engine-parts in different types
- F02B69/02—Internal-combustion engines convertible into other combustion-engine type, not provided for in F02B11/00; Internal-combustion engines of different types characterised by constructions facilitating use of same main engine-parts in different types for different fuel types, other than engines indifferent to fuel consumed, e.g. convertible from light to heavy fuel
-
- 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
-
- 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
- F02D19/0652—Biofuels, e.g. plant oils
-
- 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
- F02D19/0673—Valves; Pressure or flow regulators; Mixers
- F02D19/0676—Multi-way valves; Switch-over valves
-
- 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
- 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
- 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
-
- 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)
- Life Sciences & Earth Sciences (AREA)
- Biodiversity & Conservation Biology (AREA)
- Biotechnology (AREA)
- Botany (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
Abstract
Description
Die Erfindung betrifft eine Brennkraftmaschine für Dieselkraftstoff und Pflanzenöl, die beim Startvorgang zunächst mit Dieselkraftstoff betrieben und nachfolgend zwischen einem Betrieb mit Dieselkraftstoff und Pflanzenöl umschaltbar ist, wobei für die beiden unterschiedlichen Kraftstoffe separate Behälter vorgesehen sind, deren Ausgänge einem Dreiwegeventil aufgeschaltet sind, das in Abhängigkeit von Betriebsparametern der Brennkraftmaschine unterschiedliche Strömungsverbindungen frei schaltet und das ausgangsseitig mit einer Einspritzpumpe zur Zuführung von Kraftstoff in die Brennräume der Brennkraftmaschine in Wirkverbindung steht.The The invention relates to an internal combustion engine for diesel fuel and vegetable oil, the Startup process first operated with diesel fuel and subsequently between an operation being switchable with diesel fuel and vegetable oil, being for the two separate fuels are provided separate containers whose outputs a three-way valve are connected, depending on of operating parameters of the internal combustion engine different flow connections switches freely and the output side with an injection pump for feed from fuel to the combustion chambers the internal combustion engine is in operative connection.
Brennkraftmaschinen werden in verschiedenartigen Ausführungen als Antriebsquelle für Straßen-, Schienen-, Wasser-, Luft- und sonstige Fahrzeuge genutzt. Insbesondere aus ökologischen Aspekten ist hierbei ein Einsatz alternativer Antriebskonzepte interessant.Internal combustion engines be in various designs as a drive source for road, rail, Water, air and other vehicles used. In particular, from ecological Aspects here is an application of alternative drive concepts interesting.
Während die Anwendung von Wasserstoff und Brennstoffzellen bisher weitgehend auf Versuchsfahrzeuge begrenzt ist, sind zumindest für Straßenkraftfahrzeuge bereits mehrere akzeptable Lösungsvorschläge für eine Serienanwendung verfügbar. Dies betrifft beispielsweise Hybridantriebe, die zwei miteinander kombinierte Antriebseinheiten mit unterschiedlichem Wirkprinzip aufweisen. Hierbei bieten parallele Hybridkonzepte die Möglichkeit in unterschiedlichen Betriebszuständen eines Kraftfahrzeuges jeweils die Antriebseinheit zu verwenden, die im relevanten Drehzahl-Last-Bereich einen besseren Wirkungsgrad aufweist. Besonders vorteilhaft ergänzen sich die Eigenschaften einer Brennkraftmaschine und einer Elektromaschine, so dass Kraftfahrzeuge mit Hybridantrieb überwiegend mit einer derartigen Antriebskombination ausgestattet werden. Allerdings erfordern die zwei unterschiedlichen Antriebseinheiten mit jeweils zugeordneten weiteren Baugruppen einen erheblichen Montage-, Bauraum- und Kostenaufwand. Deshalb wird neben weiteren Entwicklungsarbeiten zum Hybridantrieb von zahlreichen Herstellern ein Betrieb der an sich bewährten Brennkraftmaschinen mit anderen Kraftstoffen als bisher üblichen Benzin- oder Dieselkraftstoffen angestrebt.While the Application of hydrogen and fuel cells so far largely limited to experimental vehicles are at least for road vehicles already several acceptable solutions for a serial application available. This applies, for example, hybrid drives, the two together Combined drive units with different operating principle exhibit. Parallel hybrid concepts offer the possibility here in different operating states of a motor vehicle each to use the drive unit in the relevant speed-load range has a better efficiency. Particularly advantageous complement each other the characteristics of an internal combustion engine and an electric machine, so that motor vehicles with hybrid drive predominantly with such a drive combination be equipped. However, the two require different Drive units with each associated further modules one considerable installation, space and cost. Therefore, next to Further development work on the hybrid drive from numerous manufacturers a company of the proven in itself Internal combustion engines with other fuels than usual Gasoline or diesel fuels sought.
Während für diesbezügliche Untersuchungen
zunächst
Flüssiggase
(LPG, CNG) und Alkohole (Methanol, Ethanol) favorisiert worden sind,
werden seit einigen Jahren auch Kraftstoffe auf biologischer Grundlage
untersucht. Durch Nutzung von Agrarflächen zur Erzeugung regenerativer
Energiequellen hat hierbei der Einsatz von Pflanzenölen zur Verbrennung
in konventionellen selbstzündenden
Brennkraftmaschinen bereits einen beachtlichen Umfang erreicht.
Allerdings besteht für
diesbezügliche
Dieselmotoren weiterer Entwicklungsbedarf, um spezifische Verfahrensnachteile
(z.B. hohe Viskosität
der Pflanzenöle,
starke Düsenverkokung,
hohe Abgasemissionen) reduzieren oder weitgehend abstellen zu können. In
diesem Zusammenhang ist anstelle eines Betriebs von Brennkraftmaschinen
ausschließlich
mit Pflanzenöl,
wie z.B. aus den Druckschriften
Aus
In
Gegenstand
von
Aus
Aufgabe der Erfindung ist es, eine technische Losung für eine Brennkraftmaschine zum Betrieb mit Dieselkraftstoff und Pflanzenöl zu schaffen, die sowohl eine lastabhängige Umschaltung zwischen den alternativen Kraftstoffen als auch einen kombinierten Betrieb mit beiden Kraftstoffen ermöglicht. Hierbei soll bei Änderungen der Motorlast ein schneller Eingriff in ein Dreiwegeventil zwischen den beiden separaten Kraftstoffbehältern und der Einspritzpumpe erreicht werden.task The invention is a technical solution for an internal combustion engine for To provide operation with diesel fuel and vegetable oil, both a load dependent Switching between the alternative fuels as well as a combined Operation with both fuels allows. This is for changes the engine load is a quick intervention in a three-way valve between the two separate fuel tanks and the injection pump be achieved.
Diese Aufgabe wird gelöst, indem als Parameter für die Steuerung des Dreiwegeventils die Abgastemperatur der Brennkraftmaschine erfasst wird. Eine vorteilhafte Ausgestaltung wird erreicht, sofern zusätzlich zur Abgastemperatur auch die Kühlmitteltemperatur der Brennkraftmaschine als Parameter für die Steuerung des Dreiwegeventils erfasst wird.These Task is solved as a parameter for the control of the three-way valve, the exhaust gas temperature of the internal combustion engine is detected. An advantageous embodiment is achieved, if in addition to Exhaust temperature also the coolant temperature the internal combustion engine as a parameter for the control of the three-way valve is detected.
Ferner ist es bei Brennkraftmaschinen mit Abgasturboaufladung möglich, dass als weiterer Parameter für die Steuerung des Dreiwegeventils der Ladedruck erfasst wird.Further it is possible in internal combustion engines with turbocharging that as another parameter for the control of the three-way valve, the boost pressure is detected.
Konstruktiv wird diese Aufgabe gelöst, indem im Abgassammelrohr ein Temperaturfühler für die Abgastemperatur angeordnet ist. Hierfür ist beispielsweise ein elektrisches Thermoelement geeignet. Unabhängig vom konkret verwendeten Temperaturfühler werden die erfassten Messwerte derart ausgewertet, dass bei einer niedrigen Abgastemperatur das Dreiwegeventil den Strömungsweg vom Behälter mit dem Dieselkraftstoff zur Einspritzpumpe frei schaltet. Hingegen schaltet das Dreiwegeventil bei einer höheren Abgastemperatur den Strömungsweg vom Behälter mit dem Pflanzenöl zur Einspritzpumpe frei. in einer besonders vorteilhaften (gegenwärtig noch kostenintensiven) Ausgestaltung ist vorgesehen, dass als Dreiwegeventil ein proportional gesteuertes Ventil verwendet wird. Somit können die Strömungswege von den Behältern mit Dieselkraftstoff und Pflanzenöl zur Einspritzpumpe stufenlos frei geschaltet werden, so dass ein fließender Übergang zwischen den Betriebsarten mit jeweils unterschiedlichem Kraftstoff erreicht wird.constructive this task is solved by arranging a temperature sensor for the exhaust gas temperature in the exhaust manifold is. Therefor For example, an electrical thermocouple is suitable. Independent of specifically used temperature sensor the acquired measured values are evaluated such that at a low exhaust gas temperature the three-way valve the flow path from the container with the diesel fuel to the injection pump free. On the other hand the three-way valve shuts off the flow path at a higher exhaust gas temperature container with the vegetable oil free to the injection pump. in a particularly advantageous (currently still cost-intensive) embodiment is provided that as a three-way valve a proportionally controlled valve is used. Thus, the flow paths from the containers with diesel fuel and vegetable oil to injection pump stepless be enabled, allowing a smooth transition between modes is achieved with each different fuel.
Die Grundidee zur Modifizierung eines Dieselmotors für einen Betrieb mit kalt verpresstem Pflanzenöl unter Nutzung eines zusätzlichen Kraftstoffbehälters mit einer Umschaltung von zunächst Dieselbetrieb auf Pflanzenölbetrieb nach dem Erreichen der Betriebstemperatur und einer Erwärmung des Pflanzenöls auf etwa 65° Celsius ist grundsätzlich bekannt. Die vorliegende Erfindung gestaltet diesen Lösungsansatz vorteilhaft aus, indem nunmehr Parameter mit unmittelbarem Bezug zum Lastverhalten der Brennkraftmaschine für eine Umschaltung zwischen den unterschiedlichen Betriebsarten genutzt werden. Somit kann die verfügbare Leistung der Brennkraftmaschine wechselnden Leistungsanforderungen im Fahrbetrieb eines Kraftfahrzeuges optimal und mit extrem niedrigem Zeitverzug angepasst werden. Hierbei ist sowohl eine lastabhängige Umschaltung zwischen Dieselkraftstoff und Pflanzenöl als auch ein kombinierter Betrieb mit beiden Kraftstoffen möglich.The Basic idea for the modification of a diesel engine for operation with cold-pressed vegetable oil under Use of an additional Fuel tank with a switch from initially diesel operation on vegetable oil plant after reaching the operating temperature and heating the vegetable oil at about 65 ° Celsius is basically known. The present invention makes up this approach advantageous, by now having direct reference parameters for load behavior of the internal combustion engine for switching between be used the different modes. Thus, the available Performance of the engine changing power requirements when driving a motor vehicle optimally and with extremely low Time delay to be adjusted. Here is both a load-dependent switching between diesel fuel and vegetable oil as well as a combined one Operation with both fuels possible.
Durch die Messung der Abgastemperatur im Abgasstrom innerhalb des Abgassammelrohrs unter Verwendung eines Temperaturfühlers sind Rückschlüsse auf die aktuelle Verbrennungstemperatur möglich, die unmittelbar in Abhängigkeit zur Motorlast steht. Hierbei gilt: niedrige Abgastemperatur => Leistungsbedarf gering/hohe Abgastemperatur => Leistungsbedarf groß. Dadurch wird es mit der vorliegenden technischen Lösung möglich, eine automatische Umschaltung zwischen Betrieb mit Dieselkraftstoff bei geringer Motorlast (z.B. Bergabfahrt, stehendes Fahrzeug an einer Ampel, langsame Fahrt im Stadtverkehr usw.) und Betrieb mit Pflanzenöl bei hoher Motorlast (z.B. Bergauffahrt, Beschleunigungsvorgang usw.) zu realisieren. Die relevante Umschalttemperatur bzw. der hierzu entsprechende Lastpunkt der Umschaltung sind einstellbar und werden der jeweiligen Betriebssituation angepasst.By the measurement of the exhaust gas temperature in the exhaust gas flow within the exhaust manifold using a temperature sensor are conclusions on the current combustion temperature possible, which is directly dependent to the engine load. The following applies: low exhaust gas temperature => power requirement low / high Exhaust gas temperature => power requirement large. This makes it possible with the present technical solution, a automatic switching between operation with diesel fuel at low engine load (e.g., downhill, stationary vehicle at a traffic light, slow ride in city traffic, etc.) and operation with vegetable oil at high Engine load (e.g., uphill, acceleration, etc.). The relevant switching temperature or the corresponding load point the changeover are adjustable and are the respective operating situation customized.
Durch die Umschaltung auf Dieselbetrieb bei geringerer Motorlast werden die sonst in diesem Betriebsbereich typischen Nagelgeräusche der Brennkraftmaschine vermieden. Dies bewirkt neben akustischen Vorteilen auch ein besseres Emissionsverhalten, indem im Leerlauf und im niedrigeren Teillastbereich durch die Abschaltung der Zuführung von Pflanzenöl eine rückstandsfreie Verbrennung erreicht und ein Eintrag von Pflanzenöl in das Motoröl der Brennkraftmaschine (der bekanntlich Motorschäden verursachen kann) vermieden wird.By switching to diesel operation at lower engine load the otherwise typical in this operating area nail noises the Internal combustion engine avoided. This causes in addition to acoustic benefits also a better emission behavior, by idling and in the lower Part load range by switching off the supply of vegetable oil residue-free Achieved combustion and an entry of vegetable oil in the Engine oil the internal combustion engine (which can cause known motor damage) avoided becomes.
Der grundsätzliche Aufbau einer erfindungsgemäßen Brennkraftmaschine ist in der Zeichnung als Ausführungsbeispiel dargestellt, das nachfolgend beschrieben wird.Of the fundamental Structure of an internal combustion engine according to the invention is in the drawing as an embodiment illustrated, which will be described below.
Diese
Brennkraftmaschine
Ausgehend
vom Kraftstoffbehälter
Als
Parameter für
die Steuerung des Dreiwegeventils
Neben
der Abgastemperatur können
als weitere Parameter für
die Steuerung des Dreiwegeventils
Beim
erfindungsgemäßen Betrieb
der Brennkraftmaschine
- 11
- BrennkraftmaschineInternal combustion engine
- 22
- Kraftstoffbehälter DieselFuel tank Diesel
- 33
- Kraftstoffbehälter PflanzenölFuel tank vegetable oil
- 44
- Filter Dieselfilter diesel
- 55
- Filter Pflanzenölfilter vegetable oil
- 66
- Entlüfterventil Dieselbreather diesel
- 77
- Entlüfterventil Pflanzenölbreather vegetable oil
- 88th
- DreiwegeventilThree-way valve
- 99
- Wärmetauscherheat exchangers
- 1010
- EinspritzpumpeInjection pump
- 1111
- AbgassammelrohrExhaust manifold
- 1212
- Temperaturfühlertemperature sensor
- 1313
- Steuereinheitcontrol unit
Claims (8)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102006037644A DE102006037644A1 (en) | 2006-08-10 | 2006-08-10 | Internal combustion engine for diesel fuel and vegetable oil, has separate tanks for both different fuels, whose outlets locks three-way valve |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102006037644A DE102006037644A1 (en) | 2006-08-10 | 2006-08-10 | Internal combustion engine for diesel fuel and vegetable oil, has separate tanks for both different fuels, whose outlets locks three-way valve |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102006037644A1 true DE102006037644A1 (en) | 2008-02-21 |
Family
ID=38954701
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102006037644A Withdrawn DE102006037644A1 (en) | 2006-08-10 | 2006-08-10 | Internal combustion engine for diesel fuel and vegetable oil, has separate tanks for both different fuels, whose outlets locks three-way valve |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE102006037644A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102017214975A1 (en) * | 2017-08-28 | 2019-02-28 | Audi Ag | Powertrain for fuel cell vehicle |
-
2006
- 2006-08-10 DE DE102006037644A patent/DE102006037644A1/en not_active Withdrawn
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102017214975A1 (en) * | 2017-08-28 | 2019-02-28 | Audi Ag | Powertrain for fuel cell vehicle |
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---|---|---|---|
8110 | Request for examination paragraph 44 | ||
8130 | Withdrawal | ||
R120 | Application withdrawn or ip right abandoned |
Effective date: 20110404 |