DE10131630A1 - Fuel system for diesel engine using plant oil, uses 3-way valve for switching between diesel fuel used for starting and plant oil - Google Patents

Fuel system for diesel engine using plant oil, uses 3-way valve for switching between diesel fuel used for starting and plant oil

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Publication number
DE10131630A1
DE10131630A1 DE10131630A DE10131630A DE10131630A1 DE 10131630 A1 DE10131630 A1 DE 10131630A1 DE 10131630 A DE10131630 A DE 10131630A DE 10131630 A DE10131630 A DE 10131630A DE 10131630 A1 DE10131630 A1 DE 10131630A1
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Germany
Prior art keywords
fuel
line
vegetable oil
heat exchanger
diesel
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DE10131630A
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German (de)
Inventor
Ulrich Sepp
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Individual
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Individual
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Priority to DE10131630A priority Critical patent/DE10131630A1/en
Publication of DE10131630A1 publication Critical patent/DE10131630A1/en
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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
    • F02D19/0663—Details on the fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
    • F02D19/0668—Treating or cleaning means; Fuel filters
    • 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
    • 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
    • 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
    • F02D19/0684—High pressure fuel injection systems; Details on pumps, rails or the arrangement of valves in the fuel supply and return systems
    • 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
    • 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
    • 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)
  • 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

The fuel system has a main fuel tank (1) for plant oil and a secondary fuel tank (2) for diesel fuel, with switching between the alternate fuel supplies via a 3-way valve (10) inserted in the fuel line supplying the fuel injection pump (7). A heat exchanger (13) is inserted in the fuel line between the main fuel tank and the 3-way valve, for heating the plant oil via the engine coolant, with an associated temperature sensor (15) controlling the switching from diesel fuel to plant oil when a minimum temperature is reached.

Description

Die Erfindung betrifft eine Kraftstoffanlage für ein mit Pflanzenöl zu betreibendes Dieselantriebsaggregat, das insbesondere zum Antrieb von Dieselfahrzeugen wie beispielsweise Traktoren eingesetzt werden kann. The invention relates to a fuel system for a Vegetable oil-operated diesel drive unit, the especially for driving diesel vehicles such as Tractors can be used.

Dabei bezieht sich die Erfindung insbesondere auf ein Dieselantriebsaggregat, bei welchem der eigentliche Dieselmotor und die Einspritzpumpe unmodifizierte Komponenten üblicher Dieselantriebsaggregate für den Betrieb mit mineralischem Dieselkraftstoff sind. The invention relates in particular to Diesel drive unit, in which the actual diesel engine and the injection pump unmodified components more common Diesel drive units for operation with mineral Are diesel fuel.

Aufgabe der Erfindung ist es, ein für den Betrieb durch reines Pflanzenöl geeignetes Dieselantriebsaggregat zu schaffen, und zwar in Gestalt eines durch Modifikation eines herkömmlichen, für mineralischen Dieselkraftstoff ausgelegten Dieselantriebsaggregats an den Betrieb mit Pflanzenöl angepaßten Aggregats. Dabei sollen die zentralen Aggregatkomponenten, nämlich Dieselmotor und Einspritzpumpe, ohne Umbauten oder Modifikationen einsetzbar bleiben. Die notwendige Modifikation des Aggregats soll sich also auf ein wirtschaftliches, wenig aufwendiges und leicht durchführbares Maß an äußerem Umbau eines herkömmlichen Aggregats ohne Notwendigkeit eines Eingriffs in die zentralen Komponenten Motor und Einspritzpumpe beschränken. The object of the invention is one for operation by to create a suitable diesel drive unit for pure vegetable oil, namely in the form of a modification of a conventional, designed for mineral diesel fuel Diesel drive unit adapted for operation with vegetable oil Aggregate. The central unit components, namely diesel engine and injection pump, without conversions or Modifications remain usable. The necessary Modification of the unit should therefore focus on an economical, little complicated and easily feasible degree of exterior Conversion of a conventional unit without the need for one Intervention in the central components engine and Limit injection pump.

Diese Aufgabe wird durch die im Anspruch 1 angegebene Anordnung gelöst, die eine modifizierte Kraftstoffanlage beinhaltet. Vorteilhafte Ausgestaltungen der Erfindung sind Gegenstand der Unteransprüche. This object is achieved by the specified in claim 1 Arrangement solved that a modified fuel system includes. Advantageous embodiments of the invention are Subject of the subclaims.

Die Erfindung geht davon aus, daß Pflanzenöl nicht ohne weiteres in einem für den Betrieb mit mineralischem Dieselkraftstoff ausgelegten Dieselantriebsaggregat geeignet ist, da Pflanzenöl eine andere Konsistenz als das in allen Temperaturbereichen dünnflüssige mineralische Dieselöl hat. Um einen normalen Dieselmotor mit Pflanzenöl betreiben zu können, muß das Pflanzenöl erst in einen Zustand versetzt werden, der dem dünnflüssigen Zustand von mineralischem Dieselöl entspricht. Dies geschieht durch Erwärmung auf eine erhöhte Temperatur. Es wäre allerdings nicht praktikabel, den gesamten Tankinhalt an Pflanzenöl eines planzenölbetriebenen Aggregats vor dem Anlassen des Dieselmotors auf die erhöhte Temperatur zu erwärmen. Ebensowenig ist es sinnvoll, eine Erwärmung des Pflanzenöls auf die notwendige Temperatur durch eine externe Energiequelle, beispielsweise eine elektrische Batterie, vorzunehmen, da auch dazu nicht unbeträchtlich Zeit benötigt wird und im übrigen die Gefahr besteht, daß, zumal bei schwacher Batterie, die erforderliche Energie nicht zur Verfügung gestellt werden kann oder bei dadurch geschwächter Batterie der Motor nicht mehr angelassen werden kann. The invention assumes that vegetable oil is not without another in one for operation with mineral Diesel-fueled diesel drive unit is suitable because Vegetable oil a different consistency than that in all Has temperature ranges of low-viscosity mineral diesel oil. To one To be able to operate normal diesel engine with vegetable oil the vegetable oil is first brought into a state that fluid state of mineral diesel oil. This is done by heating to an elevated temperature. However, it would not be practical to use the entire tank capacity of vegetable oil from a vegetable oil-powered unit before Starting the diesel engine to the elevated temperature heat. Nor is it sensible to heat the Vegetable oil to the necessary temperature by an external Energy source, for example an electric battery, to carry out, as it does not take a considerable amount of time to do this and there is a risk that, especially with weak battery, the required energy is not available can be put or if the battery becomes weak the engine can no longer be started.

Um ein sofortiges Anlassen des Dieselmotors bei kaltem Aggregat und ein Erwärmen nur jeweils einer unmittelbar benötigten kleinen Menge des Pflanzenöls durch das Aggregat selbst zu ermöglichen, sieht die Erfindung vor, daß das Aggregat, das einen üblichen, für Mineralölbetrieb ausgelegten Dieselmotor, eine ebenso ausgelegte Einspritzpumpe und einen Kraftstofftank, der mit reinem Pflanzenöl zu füllen ist, aufweist, außerdem mit einem kleinen Zusatztank zur Aufnahme von mineralischem Dieselöl, einer zwischen dem Zusatztank und dem Pflanzenöl-befüllten Haupttank umschaltbaren Kraftstoffzufuhr zur Einspritzpumpe, und einem Wärmetauscher ausgestattet ist, der in die Pflanzenöl führende Leitung vom Haupttank zur Einspritzpumpe eingeschaltet ist und von einem Motorabwärme führenden Heizmedium geheizt wird, nämlich durch Einschalten in den Kühlwasserkreislauf oder den Motorölkreislauf des Dieselmotors. To start the diesel engine immediately when it is cold Aggregate and heating only one immediately required small amount of vegetable oil through the aggregate itself enable, the invention provides that the aggregate, the a common diesel engine designed for mineral oil operation, an equally designed injection pump and one Fuel tank to be filled with pure vegetable oil, also with a small additional tank to hold mineral diesel oil, one between the auxiliary tank and the Vegetable oil-filled main tank switchable fuel supply to the injection pump and a heat exchanger, the line leading from the main tank to the vegetable oil Injection pump is turned on and from an engine waste heat leading heating medium is heated, namely by switching on into the cooling water circuit or the engine oil circuit of the Diesel engine.

Zum Anlassen des Dieselmotors bei kaltem Aggregat ist die Kraftstoffzufuhr auf den Zusatztank geschaltet, so daß der Motor zunächst mit mineralischem Dieselöl angelassen und betrieben wird. Sobald der Wärmetauscher die vorgesehene Betriebstemperatur erreicht und das Pflanzenöl entsprechend erwärmt, findet eine vorzugsweise automatische Umschaltung der Kraftstoffzufuhr auf den Haupttank statt, und der Motor wird sodann mit Pflanzenöl betrieben. To start the diesel engine when the unit is cold, the Fuel supply switched to the additional tank, so that the Engine started with mineral diesel oil and is operated. As soon as the heat exchanger the intended Operating temperature reached and the vegetable oil accordingly heated, there is preferably an automatic switchover of the Fuel is placed on the main tank and the engine will then operated with vegetable oil.

Ein Ausführungsbeispiel der Erfindung wird nachstehend unter Bezugnahme auf die anliegende Zeichnung in seinen wesentlichen Einzelheiten beschrieben. An embodiment of the invention is described below Reference to the attached drawing in his essential details are described.

Die Zeichnung zeigt nach Art eines Blockschaltbilds die Kraftstoffversorgungsanlage eines nach der Erfindung ausgebildeten Dieselantriebsaggregats. The drawing shows the type of a block diagram Fuel supply system according to the invention trained diesel power unit.

Die Kraftstoffanlage umfaßt einen Haupttank 1, bei dem es sich um den normalen Kraftstofftank eines Dieselfahrzeugs handeln kann, der nun zur Aufnahme von Pflanzenöl dient. Des weiteren weist die Anlage einen Zusatztank 2 auf, der ein bedeutend kleineres Volumen als der Haupttank 1 haben kann und zur Aufnahme von normalem, d. h. mineralischem Dieselöl dient. The fuel system comprises a main tank 1 , which can be the normal fuel tank of a diesel vehicle, which is now used to hold vegetable oil. Furthermore, the system has an additional tank 2 , which can have a significantly smaller volume than the main tank 1 and serves to hold normal, ie mineral, diesel oil.

Weiter umfaßt die Kraftstoffanlage eine in eine Kraftstoffzuleitung 3 eingebaute Kraftstoffpumpe 4, ein dieser in der Kraftstoffzuleitung 3 nachgeschaltetes Kraftstoffilter 5, weiter einen in die Kraftstoffzuleitung 3 eingebauten Wärmetauscher 6, und schließlich eine Einspritzpumpe 7, in welche die Kraftstoffzuleitung 3 einmündet. Von der Einspritzpumpe 7 verlaufen Einspritzleitungen 8 zum Dieselmotor, und überschüssiger Kraftstoff aus der von der Kraftstoffpumpe 4 zugeführten Fördermenge wird von der Einspritzpumpe 7 durch eine Rücklaufleitung 9 zurückgeführt. The fuel system further comprises a fuel pump 4 installed in a fuel feed line 3 , a fuel filter 5 connected downstream of this in the fuel feed line 3 , a heat exchanger 6 installed in the fuel feed line 3 , and finally an injection pump 7 , into which the fuel feed line 3 opens. Injection lines 8 run from the injection pump 7 to the diesel engine, and excess fuel from the delivery quantity supplied by the fuel pump 4 is returned by the injection pump 7 through a return line 9 .

Stromaufseitig ist die Kraftstoffzuleitung 3 mit einem Dreiwegeventil 10 verbunden, das einen in die Kraftstoffzuleitung 3 führenden Auslaß und zwei Einlässe hat, von denen einer über eine Dieselölleitung 11 mit dem Zusatztank 2 verbunden ist. Der Haupttank 1, der mit Pflanzenöl gefüllt ist, ist über eine Pflanzenölleitung 12, in welche ein weiterer Wärmetauscher 13 eingebaut ist, mit dem anderen Einlaß des Dreiwegeventils 10 verbunden. On the upstream side, the fuel feed line 3 is connected to a three-way valve 10 which has an outlet leading into the fuel feed line 3 and two inlets, one of which is connected to the auxiliary tank 2 via a diesel oil line 11 . The main tank 1 , which is filled with vegetable oil, is connected to the other inlet of the three-way valve 10 via a vegetable oil line 12 , in which a further heat exchanger 13 is installed.

Zur Beheizung der beiden Wärmetauscher 6 und 13 dient ein Motorabwärme führendes flüssiges Medium, nämlich vorzugsweise Kühlwasser. Bei luftgekühlten Motoren kann auch das Motoröl benutzt werden. Die in der Zeichnung mit 14 bezeichnete, das Heizmedium führende Leitung ist also Bestandteil des Kühlwasserkreislaufs oder des Motorölkreislaufs. A liquid medium carrying engine waste heat, namely preferably cooling water, is used to heat the two heat exchangers 6 and 13 . Engine oil can also be used with air-cooled engines. The line, designated 14 in the drawing, which carries the heating medium is therefore part of the cooling water circuit or the engine oil circuit.

Ein dem Wärmetauscher 13 zugeordneter Temperaturfühler 15 ist mit einer Elektronik 16 verbunden. Ist eine genügend hohe Temperatur erreicht, damit das Pflanzenöl in der Pflanzenölleitung 12 auf eine ausreichend hohe Temperatur vorgewärmt werden kann, schaltet die Elektronik 16 das Dreiwegeventil 10, das in der Zeichnung in der die Kraftstoffzuleitung 3 mit dem Zusatztank 2 verbindenden Stellung dargestellt ist, in seine andere, die Kraftstoffzuleitung 3 mit der Pflanzenölleitung 12 verbindende Stellung um. Gleichzeitig wird auch ein zweites Dreiwegeventil 17 umgeschaltet, das in die Rücklaufleitung 9 geschaltet ist und den Rücklauf in der einen Schaltstellung in den Zusatztank 2 und in der anderen Schaltstellung in den Haupttank 1 leitet. Die beiden Dreiwegeventile 10 und 17 können mechanisch miteinander gekoppelt sein. A temperature sensor 15 assigned to the heat exchanger 13 is connected to electronics 16 . If a sufficiently high temperature is reached so that the vegetable oil in the vegetable oil line 12 can be preheated to a sufficiently high temperature, the electronics 16 switches the three-way valve 10 , which is shown in the drawing in the position connecting the fuel supply line 3 to the auxiliary tank 2 his other position connecting the fuel supply line 3 with the vegetable oil line 12 . At the same time, a second three-way valve 17 is switched, which is connected to the return line 9 and which conducts the return to the additional tank 2 in one switching position and to the main tank 1 in the other switching position. The two three-way valves 10 and 17 can be mechanically coupled to one another.

Der Wärmetauscher 13 kann gegebenenfalls auch in eine Mehrzahl von in Reihe geschalteten Einzelwärmetauschern aufgeteilt sein, beispielsweise in Gestalt einer Batterie von Plattenwärmetauschern. The heat exchanger 13 can optionally also be divided into a plurality of individual heat exchangers connected in series, for example in the form of a battery of plate heat exchangers.

Claims (9)

1. Kraftstoffanlage für ein mit Pflanzenöl zu betreibendes Dieselantriebsaggregat, dessen Dieselmotor und Einspritzpumpe (7) für den Betrieb mit normalem mineralischem Dieselöl ausgelegt sind, mit einem Kraftstofftank, einer zur Einspritzpumpe (7) führenden Kraftstoffzuleitung (3) und einer von der Einspritzpumpe zum Kraftstofftank zurückführenden Rücklaufleitung (9), sowie mit einer Kraftstoffpumpe (4) und einem Kraftstoffilter (5), die in die Kraftstoffzuleitung (3) eingebaut sind, dadurch gekennzeichnet daß der Kraftstofftank als Haupttank (1) zur Aufnahme von Pflanzenöl dient und ein Zusatztank (2) zur Aufnahme von mineralischem Dieselöl vorgesehen ist, daß weiter das das stromaufwärtige Ende der Kraftstoffzuleitung (3) über ein Dreiwegeventil (10) umschaltbar mit einer vom Zusatztank (2) kommenden Dieselölleitung (11) und einer vom Haupttank (1) kommenden Pflanzenölleitung (12) verbunden ist, daß weiter in die Pflanzenölleitung (12) ein Wärmetauscher (13) eingebaut ist, der von einem Motorabwärme führenden Heizmedium durchströmt wird, und daß dem Wärmetauscher (13) ein Temperaturfühler (15) zugeordnet ist und Mittel zum Umschalten des Dreiwegeventils (10) von der Dieselölleitung (11) auf die Pflanzenölleitung (12) vorgesehen sind, wenn nach dem Starten des Aggregats die vom Temperaturfühler (15) erfaßte Temperatur einen vorgegebenen Mindestwert erreicht hat. 1.Fuel system for a diesel drive unit to be operated with vegetable oil, whose diesel engine and injection pump ( 7 ) are designed for operation with normal mineral diesel oil, with a fuel tank, a fuel feed line ( 3 ) leading to the injection pump ( 7 ) and one from the injection pump to the fuel tank returning return line ( 9 ), as well as with a fuel pump ( 4 ) and a fuel filter ( 5 ), which are built into the fuel supply line ( 3 ), characterized in that the fuel tank serves as the main tank ( 1 ) for receiving vegetable oil and an additional tank ( 2 is) provided for receiving mineral diesel oil, further that the upstream end of the fuel supply line (3) via a three-way valve (10) can be switched with a coming from the additional tank (2) diesel oil line (11) and coming from the main tank (1) vegetable oil line (12 ) is connected that further into the vegetable oil line ( 12th ) A heat exchanger ( 13 ) is installed, which is flowed through by a heating medium carrying engine waste heat, and that the heat exchanger ( 13 ) is assigned a temperature sensor ( 15 ) and means for switching the three-way valve ( 10 ) from the diesel oil line ( 11 ) to the vegetable oil line ( 12 ) are provided if, after starting the unit, the temperature detected by the temperature sensor ( 15 ) has reached a predetermined minimum value. 2. Kraftstoffanlage nach Anspruch 1, dadurch gekennzeichnet, daß eine Elektronik (16) ein Temperatursignal vom Temperaturfühler (15) empfängt und das Umschalten des Dreiwegeventils (10) von der Dieselölleitung (11) auf die Pflanzenölleitung (12) automatisch steuert. 2. Fuel system according to claim 1, characterized in that an electronics ( 16 ) receives a temperature signal from the temperature sensor ( 15 ) and automatically controls the switching of the three-way valve ( 10 ) from the diesel oil line ( 11 ) to the vegetable oil line ( 12 ). 3. Kraftstoffanlage nach Anspruch 2, dadurch gekennzeichnet, daß die Elektronik (16) auch das Umschalten des Dreiwegeventils (10) von der Pflanzenölleitung (12) auf die Dieselölleitung (11) automatisch bewirkt, wenn die vom Temperaturfühler (15) erfaßte Temperatur, beispielsweise beim Starten des Aggregats, unter dem vorgegebenen Mindestwert liegt. 3. Fuel system according to claim 2, characterized in that the electronics ( 16 ) also automatically switches the three-way valve ( 10 ) from the vegetable oil line ( 12 ) to the diesel oil line ( 11 ) when the temperature sensor ( 15 ) detects the temperature, for example when starting the unit is below the specified minimum value. 4. Kraftstoffanlage nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß in der Rücklaufleitung (9) ein zweites Dreiwegeventil (17) angeordnet ist, das gemeinsam mit dem ersteren Dreiwegeventil (10) umschaltbar ist und die Rücklaufleitung (9) mit dem Zusatztank (2) bzw. dem Haupttank (1) verbindet, wenn die Kraftstoffzuleitung (3) mit der Dieselölleitung (11) bzw. mit der Pflanzenölleitung (12) verbunden ist. 4. Fuel system according to one of claims 1 to 3, characterized in that in the return line ( 9 ) a second three-way valve ( 17 ) is arranged, which can be switched together with the first three-way valve ( 10 ) and the return line ( 9 ) with the additional tank ( 2 ) or the main tank ( 1 ) connects when the fuel supply line ( 3 ) is connected to the diesel oil line ( 11 ) or to the vegetable oil line ( 12 ). 5. Kraftstoffanlage nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die Heizleitung (14) des Wärmetauschers (13) in den Kühlwasserkreislauf oder den Motorölkreislauf des Aggregats geschaltet ist. 5. Fuel system according to one of claims 1 to 4, characterized in that the heating line ( 14 ) of the heat exchanger ( 13 ) is connected to the cooling water circuit or the engine oil circuit of the unit. 6. Kraftstoffanlage nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß ein weiterer Wärmetauscher (6) in die Kraftstoffzuleitung (3) zum Vorwärmen des zur Einspritzpumpe (7) zugeführten Kraftstoffs eingeschaltet ist. 6. Fuel system according to one of claims 1 to 5, characterized in that a further heat exchanger ( 6 ) in the fuel supply line ( 3 ) for preheating the fuel supplied to the injection pump ( 7 ) is switched on. 7. Kraftstoffanlage nach Anspruch 6, dadurch gekennzeichnet, daß der weitere Wärmetauscher (6) vom gleichen Motorabwärme führenden Heizmedium wie der in die Pflanzenölleitung (12) eingeschaltete Wärmetauscher (13) beheizt wird und hinsichtlich des Heizmediumkreislaufs stromauf des in die Pflanzenölleitung (12) eingeschalteten Wärmetauschers (13) mit diesem in Reihe geschaltet ist. 7. Fuel system according to claim 6, characterized in that the further heat exchanger ( 6 ) from the same engine waste heat leading heating medium as the in the vegetable oil line ( 12 ) switched on heat exchanger ( 13 ) is heated and with respect to the heating medium circuit upstream of the in the vegetable oil line ( 12 ) Heat exchanger ( 13 ) is connected in series with this. 8. Kraftstoffanlage nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß der in die Pflanzenölleitung (12) eingeschaltete Wärmetauscher (13) durch eine aus mindestens zwei in Reihe geschalteten Einzelwärmetauschern gebildet ist. 8. Fuel system according to one of claims 1 to 7, characterized in that the heat exchanger ( 13 ) switched on in the vegetable oil line ( 12 ) is formed by one of at least two individual heat exchangers connected in series. 9. Kraftstoffanlage nach Anspruch 8, dadurch gekennzeichnet, daß die Einzelwärmetauscher auch hinsichtlich des Heizmediums in Reihe geschaltet sind und in ihrer Gesamtheit als Gegenstrom-Wärmetauscherbatterie ausgebildet sind. 9. Fuel system according to claim 8, characterized in that the individual heat exchanger also with regard to the heating medium are connected in series and in their entirety as Counterflow heat exchanger battery are formed.
DE10131630A 2001-06-29 2001-06-29 Fuel system for diesel engine using plant oil, uses 3-way valve for switching between diesel fuel used for starting and plant oil Withdrawn DE10131630A1 (en)

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DE10131630A DE10131630A1 (en) 2001-06-29 2001-06-29 Fuel system for diesel engine using plant oil, uses 3-way valve for switching between diesel fuel used for starting and plant oil

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DE10131630A DE10131630A1 (en) 2001-06-29 2001-06-29 Fuel system for diesel engine using plant oil, uses 3-way valve for switching between diesel fuel used for starting and plant oil

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202004016756U1 (en) * 2004-10-28 2006-03-09 Evg Ein- Und Verkaufs-Genossenschaft E.G. Vegetable oil combustion system has heater on outlet side in communication with exhaust gas system allocated to combustion unit, and heater is installed next to exhaust gas system and connected to it in thermally conducting manner
DE202005007712U1 (en) * 2005-05-11 2006-09-21 Storimpex Im- & Export Gmbh Device for running of diesel engine with vegetable oil has control unit for automatic operation of switching valve in order to flush injection system of diesel engine with diesel fuel from diesel tank
EP1731344A2 (en) * 2005-06-09 2006-12-13 Tom Greten Tank container arrangement for a combustion assembly, especially for a vehicle internal combustion engine
DE202008002939U1 (en) 2007-03-07 2008-06-12 Schlenger, Markus Device for operating a diesel engine with fuels from vegetable oils
GB2431203B (en) * 2004-07-08 2008-08-20 Regenatec Ltd Operating internal combustion engines with plant oil
DE102007031781A1 (en) * 2007-07-07 2009-01-08 Deutz Ag Alternatively with diesel fuel or a biogenic fuel operable internal combustion engine
FR2919233A1 (en) * 2007-07-27 2009-01-30 Pascal Pauvif Biofuel i.e. ethanol, supplying device for e.g. four-stroke carburetor engine, has three-way ball valve comprising three ways respectively connected to ethanol tank, engine and unleaded petrol tank, where valve is made of plastic material
CN101498259B (en) * 2009-01-24 2011-01-05 哈尔滨市三棵树铁路客车配件有限公司 Diesel self-heating apparatus of railway air conditioning generator car lower fuel tank
DE202006020990U1 (en) 2006-08-10 2011-11-30 Walter Hölzer Internal combustion engine for diesel fuel and vegetable oil
CN101493060B (en) * 2009-03-06 2012-05-30 重庆隆鑫机车有限公司 Fuel supply system for motorcycle

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2431203B (en) * 2004-07-08 2008-08-20 Regenatec Ltd Operating internal combustion engines with plant oil
DE202004016756U1 (en) * 2004-10-28 2006-03-09 Evg Ein- Und Verkaufs-Genossenschaft E.G. Vegetable oil combustion system has heater on outlet side in communication with exhaust gas system allocated to combustion unit, and heater is installed next to exhaust gas system and connected to it in thermally conducting manner
DE202005007712U1 (en) * 2005-05-11 2006-09-21 Storimpex Im- & Export Gmbh Device for running of diesel engine with vegetable oil has control unit for automatic operation of switching valve in order to flush injection system of diesel engine with diesel fuel from diesel tank
EP1731344A2 (en) * 2005-06-09 2006-12-13 Tom Greten Tank container arrangement for a combustion assembly, especially for a vehicle internal combustion engine
DE102005026584A1 (en) * 2005-06-09 2006-12-21 Tom Greten Tank container device for a combustion unit, in particular for an internal combustion engine of a motor vehicle
EP1731344A3 (en) * 2005-06-09 2008-03-19 Tom Greten Tank container arrangement for a combustion assembly, especially for a vehicle internal combustion engine
DE202006020990U1 (en) 2006-08-10 2011-11-30 Walter Hölzer Internal combustion engine for diesel fuel and vegetable oil
DE202008002939U1 (en) 2007-03-07 2008-06-12 Schlenger, Markus Device for operating a diesel engine with fuels from vegetable oils
DE102007031781A1 (en) * 2007-07-07 2009-01-08 Deutz Ag Alternatively with diesel fuel or a biogenic fuel operable internal combustion engine
FR2919233A1 (en) * 2007-07-27 2009-01-30 Pascal Pauvif Biofuel i.e. ethanol, supplying device for e.g. four-stroke carburetor engine, has three-way ball valve comprising three ways respectively connected to ethanol tank, engine and unleaded petrol tank, where valve is made of plastic material
CN101498259B (en) * 2009-01-24 2011-01-05 哈尔滨市三棵树铁路客车配件有限公司 Diesel self-heating apparatus of railway air conditioning generator car lower fuel tank
CN101493060B (en) * 2009-03-06 2012-05-30 重庆隆鑫机车有限公司 Fuel supply system for motorcycle

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