WO2009143908A1 - Fuel supply system for a gas-driven internal combustion engine - Google Patents

Fuel supply system for a gas-driven internal combustion engine Download PDF

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Publication number
WO2009143908A1
WO2009143908A1 PCT/EP2008/065981 EP2008065981W WO2009143908A1 WO 2009143908 A1 WO2009143908 A1 WO 2009143908A1 EP 2008065981 W EP2008065981 W EP 2008065981W WO 2009143908 A1 WO2009143908 A1 WO 2009143908A1
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WO
WIPO (PCT)
Prior art keywords
heat transfer
fuel supply
supply system
gas
gas line
Prior art date
Application number
PCT/EP2008/065981
Other languages
German (de)
French (fr)
Inventor
Alexander Gluschke
Juergen Foerster
Christian Mengler
Thorsten Allgeier
Winfried Langer
Original Assignee
Robert Bosch Gmbh
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Robert Bosch Gmbh filed Critical Robert Bosch Gmbh
Publication of WO2009143908A1 publication Critical patent/WO2009143908A1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
    • F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
    • F02M21/06—Apparatus for de-liquefying, e.g. by heating
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D19/00—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
    • F02D19/02—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with gaseous fuels
    • F02D19/021—Control of components of the fuel supply system
    • F02D19/022—Control of components of the fuel supply system to adjust the fuel pressure, temperature or composition
    • 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
    • F02M31/12—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture for heating electrically
    • F02M31/125—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
    • F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
    • F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
    • F02M21/0218—Details on the gaseous fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
    • F02M21/0248—Injectors
    • F02M21/0275—Injectors for in-cylinder direct injection, e.g. injector combined with spark plug
    • 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

Definitions

  • the invention relates to a fuel supply system for a gas-fueled internal combustion engine according to the preamble of the main claim.
  • Heat transfer section of the gas line immediately after the cold start of the engine is not yet or not fully effective. This can cause damage to the gas-carrying components.
  • the erfmdungsconcee internal combustion engine having the characterizing features of the main claim has the advantage that an effective immediately after the cold start of the engine heating is provided by a simple heat storage is formed on the heat transfer section, which emits heat energy to the cooled gas.
  • This is inventively achieved by the heat transfer section of the gas line is surrounded by an outer shell such that between the outer shell and the heat transfer section, a heat transfer chamber is formed.
  • the manufacturing cost is reduced by a very simple design.
  • the heat transfer chamber is filled with a liquid, since the liquid has a high heat capacity and can deliver heat to the gas of the gas line at a temperature gradient.
  • the heat transfer chamber can be closed or flow-through.
  • the heat transfer chamber with a
  • Cooling circuit of the internal combustion engine connected since in this way a very warm liquid is available as a heat source.
  • a control valve is provided, via which the heat transfer chamber can be connected to a cooling circuit of the internal combustion engine depending on the operating point. In this way, a regulation of the gas temperature is possible.
  • the heat transfer section of the gas line is designed as a corrugated pipe, since in this way a large heat transfer surface and thus a particularly good heat transfer to the gas is achieved.
  • the corrugated pipe is made of steel, since steel has a high coefficient of thermal conductivity.
  • the outer jacket is tubular, corrugated pipe-shaped or tubular, since the heat transfer chamber is particularly easy to produce in this way.
  • the heat transfer section of the gas line and the outer jacket are arranged substantially concentric with each other, as seen over the circumference of the heat transfer section in this way a uniform heat transfer is achieved.
  • the heat transfer chamber is provided downstream of a pressure control valve and upstream of an injector, since the gas in the pressure control valve is strongly cooled and should then be heated in order to prevent excessive cooling of the gas. Excessive cooling could cause malfunction or damage to downstream components.
  • FIG. 1 schematically shows a fuel supply system according to the invention for a gas-fueled internal combustion engine and FIG. 2 shows a second gas line according to the invention of the fuel supply system.
  • Fig. 1 shows schematically a fuel supply system according to the invention for a gas-fueled internal combustion engine
  • the fuel supply system has a fuel tank 1 in which gas, for example natural gas, is stored. From the fuel tank 1, a first gas line 2 leads to a device for pressure control and / or regulation 3, whose output 4 is connected via a second gas line 5 to a fuel injection device 8, for example a gas injector.
  • the fuel injection device 8 injects fuel into a combustion chamber 9 of the internal combustion engine.
  • the first gas line 2 is connected with its end facing away from the fuel tank 1 with an input 10 of the device for pressure control and / or regulation 3.
  • the gas flowing through the pressure control and / or regulating device 3 is strongly cooled by the relaxation (Joule-Thomson effect), whereby the device 3 itself and the second gas line 5 are also strongly cooled.
  • the device for pressure control and / or regulation 3 is heated in the prior art with the cooling water of the cooling circuit. However, the heating effect during the so-called cold start of the engine only after a predetermined time.
  • the second gas line 5 has a heat transfer section 12, which supplies 5 thermal energy to the gas of the gas line and heated in this way.
  • the heat transfer section 12 of the second gas line 5 is surrounded by an outer jacket 15 such that a heat transfer chamber 16 is formed between the outer jacket 15 and the heat transfer section 12.
  • the heat transfer chamber 16 is filled with a liquid in order to achieve the largest possible heat capacity of the heat transfer chamber 16 and thereby the
  • the heat transfer chamber 16 with the heat transfer section 12 as the inner wall and the outer shell 15 as the outer wall acts as a heat exchanger between the cold gas of the gas line 5 and the warmer air in the engine compartment 18. Due to the temperature gradient between the engine compartment 18 and the gas line 5, a heat transfer to the gas line. 5 out.
  • the heat transfer chamber 16 may be designed as a closed chamber or as a flow-through chamber.
  • the heat transfer chamber 16 is connected for example to the cooling circuit of the internal combustion engine, wherein a control valve may be provided which controls the inlet from the cooling circuit into the heat transfer chamber 16.
  • a control valve may be provided which controls the inlet from the cooling circuit into the heat transfer chamber 16.
  • two connection nozzle 17 are shown for connection to the cooling circuit.
  • the standing liquid forms a liquid cushion with high heat capacity.
  • the heat transfer section 12 of the second gas line 5 is designed, for example, as a corrugated pipe (FIG. 2) in order to provide a large heat transfer area.
  • the corrugated pipe is made for example of steel, aluminum or another metal.
  • the outer jacket 15 is, for example rohrformig, wellrohrformig or tubular.
  • the outer jacket 15 is also made of steel, for example.
  • the heat transfer section 12 of the second gas line 5 and the outer jacket 15 are arranged, for example, concentric with each other.
  • Fig. 2 shows a second gas line according to the invention of the fuel supply system.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)

Abstract

Fuel supply systems for gas-driven internal combustion engines having a gas line and a heat transfer segment of the gas line that can be heated by means of a heating appliance are known. A disadvantage is that the heating of the heat transfer segment of the gas line is not yet, or not yet fully effective immediately after a cold start of the engine. Damage to the gas-carrying components can thus occur. In the fuel supply system according to the invention, heating effective immediately after a cold start of the internal combustion engine is provided, in that a simple heat store is formed at the heat transfer segment and gives off heat energy to the cooled gas. According to the invention, the heat transfer segment (12) of the gas line (5) is enclosed by an outer jacket (15) such that a heat transfer chamber (16) is formed between the outer jacket (15) and the heat transfer segment (12).

Description

Beschreibung description
Titeltitle
Kraftstoffversorgungsanlage für eine gasbetriebene BrennkraftmaschineFuel supply system for a gas-fueled internal combustion engine
Stand der TechnikState of the art
Die Erfindung geht aus von einer Kraftstoffversorgungsanlage für eine gasbetriebene Brennkraftmaschine nach der Gattung des Hauptanspruchs.The invention relates to a fuel supply system for a gas-fueled internal combustion engine according to the preamble of the main claim.
Es ist schon eine Kraftstoffversorgungsanlage für eine gasbetriebene Brennkraftmaschine aus der KR-2001063972 A bekannt, mit einer Gasleitung und einem über eine Heizeinrichtung beheizbaren Wärmeübertragungsabschnitt der Gasleitung. Nachteilig ist, dass die Beheizung desIt is already a fuel supply system for a gas-fueled internal combustion engine from the KR-2001063972 A known, with a gas line and a heatable via a heater heat transfer section of the gas line. The disadvantage is that the heating of the
Wärmeübertragungsabschnitts der Gasleitung unmittelbar nach dem Kaltstart des Motors noch nicht bzw.noch nicht voll wirksam ist. Dadurch können Schäden an den Gas führenden Bauteilen entstehen.Heat transfer section of the gas line immediately after the cold start of the engine is not yet or not fully effective. This can cause damage to the gas-carrying components.
Vorteile der ErfindungAdvantages of the invention
Die erfmdungsgemäße Brennkraftmaschine mit den kennzeichnenden Merkmalen des Hauptanspruchs hat demgegenüber den Vorteil, dass eine unmittelbar nach dem Kaltstart der Brennkraftmaschine wirksame Beheizung bereitgestellt wird, indem an dem Wärmeübertragungsabschnitt ein einfacher Wärmespeicher gebildet ist, der an das abgekühlte Gas Wärmeenergie abgibt. Dies wird erfindungsgemäß erreicht, indem der Wärmeübertragungsabschnitt der Gasleitung von einem Außenmantel derart umgeben ist, dass zwischen dem Außenmantel und dem Wärmeübertragungsabschnitt eine Wärmeübertragungskammer gebildet ist. Außerdem werden die Herstellungskosten durch eine sehr einfache Ausführung verringert.The erfmdungsgemäße internal combustion engine having the characterizing features of the main claim has the advantage that an effective immediately after the cold start of the engine heating is provided by a simple heat storage is formed on the heat transfer section, which emits heat energy to the cooled gas. This is inventively achieved by the heat transfer section of the gas line is surrounded by an outer shell such that between the outer shell and the heat transfer section, a heat transfer chamber is formed. In addition, the manufacturing cost is reduced by a very simple design.
Durch die in den Unteransprüchen aufgeführten Maßnahmen sind vorteilhafte Weiterbildungen und Verbesserungen der im Hauptanspruch angegebenen Kraftstoffversorgungsanlage möglich.The measures listed in the dependent claims advantageous refinements and improvements of the main claim fuel supply system are possible.
Besonders vorteilhaft ist, wenn die Wärmeübertragungskammer mit einer Flüssigkeit gefüllt ist, da die Flüssigkeit eine hohe Wärmekapazität aufweist und bei einem Temperaturgefälle Wärme an das Gas der Gasleitung abgeben kann. Gemäß einer vorteilhaften Ausführung kann die Wärmeübertragungskammer geschlossen oder durchströmbar ausgeführt sein.It is particularly advantageous if the heat transfer chamber is filled with a liquid, since the liquid has a high heat capacity and can deliver heat to the gas of the gas line at a temperature gradient. According to an advantageous embodiment, the heat transfer chamber can be closed or flow-through.
In einem vorteilhaften Ausführungsbeispiel ist die Wärmeübertragungskammer mit einemIn an advantageous embodiment, the heat transfer chamber with a
Kühlkreislauf der Brennkraftmaschine verbunden, da auf diese Weise eine sehr warme Flüssigkeit als Wärmequelle zur Verfügung steht.Cooling circuit of the internal combustion engine connected, since in this way a very warm liquid is available as a heat source.
Weiterhin vorteilhaft ist, wenn ein Steuerventil vorgesehen ist, über das die Wärmeübertragungskammer betriebspunktabhängig mit einem Kühlkreislauf der Brennkraftmaschine verbindbar ist. Auf diese Weise ist eine Regelung der Gastemperatur möglich.It is also advantageous if a control valve is provided, via which the heat transfer chamber can be connected to a cooling circuit of the internal combustion engine depending on the operating point. In this way, a regulation of the gas temperature is possible.
Sehr vorteilhaft ist es, wenn der Wärmeübertragungsabschnitt der Gasleitung als Wellrohr ausgeführt ist, da auf diese Weise eine große Wärmeübertragungsfläche und damit ein besonders guter Wärmeübergang zum Gas hin erreicht wird.It is very advantageous if the heat transfer section of the gas line is designed as a corrugated pipe, since in this way a large heat transfer surface and thus a particularly good heat transfer to the gas is achieved.
Auch vorteilhaft ist, wenn das Wellrohr aus Stahl hergestellt ist, da Stahl einen hohen Wärmeleitkoeffizienten aufweist.It is also advantageous if the corrugated pipe is made of steel, since steel has a high coefficient of thermal conductivity.
Desweiteren vorteilhaft ist, wenn der Außenmantel rohrförmig, wellrohrförmig oder schlauchförmig ausgeführt ist, da die Wärmeübertragungskammer auf diese Weise besonders einfach herstellbar ist.Furthermore, it is advantageous if the outer jacket is tubular, corrugated pipe-shaped or tubular, since the heat transfer chamber is particularly easy to produce in this way.
Darüber hinaus vorteilhaft ist, wenn der Wärmeübertragungsabschnitt der Gasleitung und der Außenmantel im wesentlichen konzentrisch zueinander angeordnet sind, da über den Umfang des Wärmeübertragungsabschnitts gesehen auf diese Weise ein gleichförmiger Wärmeübergang erreicht wird.Moreover, it is advantageous if the heat transfer section of the gas line and the outer jacket are arranged substantially concentric with each other, as seen over the circumference of the heat transfer section in this way a uniform heat transfer is achieved.
Vorteilhaft ist, wenn die Wärmeübertragungskammer stromab eines Druckregelventils und stromauf eines Injektors vorgesehen ist, da das Gas im Druckregelventil stark abgekühlt wird und anschließend erwärmt werden sollte, um eine unzulässig starke Abkühlung des Gases zu verhindern. Eine zu starke Abkühlung könnte zur Fehlfunktion oder Beschädigung von stromab nachfolgenden Komponenten führen. ZeichnungIt is advantageous if the heat transfer chamber is provided downstream of a pressure control valve and upstream of an injector, since the gas in the pressure control valve is strongly cooled and should then be heated in order to prevent excessive cooling of the gas. Excessive cooling could cause malfunction or damage to downstream components. drawing
Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung vereinfacht dargestellt und in der nachfolgenden Beschreibung näher erläutert.An embodiment of the invention is shown in simplified form in the drawing and explained in more detail in the following description.
Fig.1 zeigt schematisch eine erfindungsgemäße Kraftstoffversorgungsanlage für eine gasbetriebene Brennkraftmaschine und Fig.2 eine erfindungsgemäße zweite Gasleitung der Kraftstoffversorgungsanlage.1 schematically shows a fuel supply system according to the invention for a gas-fueled internal combustion engine and FIG. 2 shows a second gas line according to the invention of the fuel supply system.
Beschreibung des AusführungsbeispielsDescription of the embodiment
Fig. 1 zeigt schematisch eine erfindungsgemäße Kraftstoffversorgungsanlage für eine gasbetriebene BrennkraftmaschineFig. 1 shows schematically a fuel supply system according to the invention for a gas-fueled internal combustion engine
Die Kraftstoffversorgungsanlage hat einen Kraftstofftank 1 , in dem Gas, beispielsweise Erdgas, gespeichert ist. Von dem Kraftstofftank 1 führt eine erste Gasleitung 2 zu einer Einrichtung zur Drucksteuerung und/oder -regelung 3, dessen Ausgang 4 über eine zweite Gasleitung 5 mit einer Kraftstoffeinspritzvorrichtung 8, beispielsweise einem Gasinjektor, verbunden ist. Die Kraftstoffeinspritzvorrichtung 8 spritzt Kraftstoff in einen Brennraum 9 der Brennkraftmaschine ein. Die erste Gasleitung 2 ist mit ihrem dem Kraftstofftank 1 abgewandten Ende mit einem Eingang 10 der Vorrichtung zur Drucksteuerung und/oder -regelung 3 verbunden.The fuel supply system has a fuel tank 1 in which gas, for example natural gas, is stored. From the fuel tank 1, a first gas line 2 leads to a device for pressure control and / or regulation 3, whose output 4 is connected via a second gas line 5 to a fuel injection device 8, for example a gas injector. The fuel injection device 8 injects fuel into a combustion chamber 9 of the internal combustion engine. The first gas line 2 is connected with its end facing away from the fuel tank 1 with an input 10 of the device for pressure control and / or regulation 3.
Das durch die Einrichtung zur Drucksteuerung und/oder -regelung 3 strömende Gas wird durch die Entspannung stark abgekühlt (Joule-Thomson-Effekt), wodurch die Einrichtung 3 selbst und die zweite Gasleitung 5 ebenfalls stark abgekühlt werden. Die Einrichtung zur Drucksteuerung und/oder -regelung 3 wird im Stand der Technik mit dem Kühlwasser des Kühlkreislaufes beheizt. Allerdings wirkt die Beheizung beim sogenannten Kaltstart der Brennkraftmaschine erst nach einer vorbestimmten Zeit.The gas flowing through the pressure control and / or regulating device 3 is strongly cooled by the relaxation (Joule-Thomson effect), whereby the device 3 itself and the second gas line 5 are also strongly cooled. The device for pressure control and / or regulation 3 is heated in the prior art with the cooling water of the cooling circuit. However, the heating effect during the so-called cold start of the engine only after a predetermined time.
Um zu verhindern, dass die Gas führenden Bauteile stromab der Einrichtung 3 während der Zeit, in der die Beheizung der Einrichtung zur Drucksteuerung und/oder -regelung 3 noch nicht voll wirksam ist, durch die Kältebelastung beschädigt werden, hat die zweite Gasleitung 5 einen Wärmeübertragungsabschnitt 12, der dem Gas der Gasleitung 5 Wärmeenergie zuführt und auf diese Weise erwärmt. Erfindungsgemäß ist vorgesehen, dass der Wärmeübertragungsabschnitt 12 der zweiten Gasleitung 5 von einem Außenmantel 15 derart umgeben ist, dass zwischen dem Außenmantel 15 und dem Wärmeübertragungsabschnitt 12 eine Wärmeübertragungskammer 16 gebildet ist. Die Wärmeübertragungskammer 16 ist mit einer Flüssigkeit gefüllt, um eine möglichst große Wärmekapazität der Wärmeübertragungskammer 16 zu erreichen und dadurch dieIn order to prevent the gas-carrying components downstream of the device 3 from being damaged by the cold load during the time when the heating of the pressure control and / or regulation device 3 is not yet fully effective, the second gas line 5 has a heat transfer section 12, which supplies 5 thermal energy to the gas of the gas line and heated in this way. According to the invention, it is provided that the heat transfer section 12 of the second gas line 5 is surrounded by an outer jacket 15 such that a heat transfer chamber 16 is formed between the outer jacket 15 and the heat transfer section 12. The heat transfer chamber 16 is filled with a liquid in order to achieve the largest possible heat capacity of the heat transfer chamber 16 and thereby the
Abkühlgeschwindigkeit des Wärmeübertragungsabschnitts 12 bzw. der zweiten Gasleitung 5 zu verringern. Die Wärmeübertragungskammer 16 mit dem Wärmeübertragungsabschnitt 12 als Innenwandung und dem Außenmantel 15 als Außenwandung wirkt als Wärmetauscher zwischen dem kalten Gas der Gasleitung 5 und der wärmeren Luft im Motorraum 18. Durch das Temperaturgefälle zwischen dem Motorraum 18 und der Gasleitung 5 erfolgt ein Wärmetransport zur Gasleitung 5 hin.Cooling rate of the heat transfer section 12 and the second gas line 5 to reduce. The heat transfer chamber 16 with the heat transfer section 12 as the inner wall and the outer shell 15 as the outer wall acts as a heat exchanger between the cold gas of the gas line 5 and the warmer air in the engine compartment 18. Due to the temperature gradient between the engine compartment 18 and the gas line 5, a heat transfer to the gas line. 5 out.
Die Wärmeübertragungskammer 16 kann als geschlossene Kammer oder als durchströmbare Kammer ausgeführt sein. Bei der Ausführung als durchströmbare Kammer ist die Wärmeübertragungskammer 16 beispielsweise an den Kühlkreislauf der Brennkraftmaschine angeschlossen, wobei ein Steuerventil vorgesehen sein kann, das den Zulauf vom Kühlkreislauf in die Wärmeübertragungskammer 16 steuert. In Fig.l sind beispielhaft zwei Anschlusstutzen 17 für den Anschluss an den Kühlkreislauf gezeigt. Bei der Ausführung als geschlossene Kammer bildet die stehende Flüssigkeit ein Flüssigkeitspolster mit hoher Wärmekapazität.The heat transfer chamber 16 may be designed as a closed chamber or as a flow-through chamber. In the embodiment as a flow-through chamber, the heat transfer chamber 16 is connected for example to the cooling circuit of the internal combustion engine, wherein a control valve may be provided which controls the inlet from the cooling circuit into the heat transfer chamber 16. In Fig.l example, two connection nozzle 17 are shown for connection to the cooling circuit. When designed as a closed chamber, the standing liquid forms a liquid cushion with high heat capacity.
Der Wärmeübertragungsabschnitt 12 der zweiten Gasleitung 5 ist beispielsweise als Wellrohr ausgeführt (Fig.2), um eine große Wärmeübertragungsfläche bereitzustellen. Das Wellrohr ist beispielsweise aus Stahl, Aluminium oder einem anderen Metall hergestellt.The heat transfer section 12 of the second gas line 5 is designed, for example, as a corrugated pipe (FIG. 2) in order to provide a large heat transfer area. The corrugated pipe is made for example of steel, aluminum or another metal.
Der Außenmantel 15 ist beispielsweise rohrformig, wellrohrformig oder schlauchförmig ausgeführt. Der Außenmantel 15 ist beispielsweise ebenfalls aus Stahl hergestellt.The outer jacket 15 is, for example rohrformig, wellrohrformig or tubular. The outer jacket 15 is also made of steel, for example.
Der Wärmeübertragungsabschnitt 12 der zweiten Gasleitung 5 und der Außenmantel 15 sind beispielsweise konzentrisch zueinander angeordnet.The heat transfer section 12 of the second gas line 5 and the outer jacket 15 are arranged, for example, concentric with each other.
Fig. 2 zeigt eine erfindungsgemäße zweite Gasleitung der KraftstoffVersorgungsanlage.Fig. 2 shows a second gas line according to the invention of the fuel supply system.
Bei der Gasleitung nach Fig.2 sind die gegenüber der Vorrichtung nach Fig.1 gleichbleibenden oder gleichwirkenden Teile durch die gleichen Bezugszeichen gekennzeichnet. In the case of the gas line according to FIG. 2, the parts which remain the same or have the same effect as the device according to FIG. 1 are identified by the same reference numerals.

Claims

Ansprüche claims
1. Kraftstoffversorgungsanlage für eine gasbetriebene Brennkraftmaschine mit einer Gasleitung und einem Wärmeübertragungsabschnitt der Gasleitung, dadurch gekennzeichnet, dass der Wärmeübertragungsabschnitt (12) der Gasleitung (5) von einem Außenmantel (15) derart umgeben ist, dass zwischen dem Außenmantel (15) und dem Wärmeübertragungsabschnitt (12) eine Wärmeübertragungskammer (16) gebildet ist.A fuel supply system for a gas-fueled internal combustion engine having a gas line and a heat transfer section of the gas line, characterized in that the heat transfer section (12) of the gas line (5) is surrounded by an outer jacket (15) such that between the outer jacket (15) and the heat transfer section (12) a heat transfer chamber (16) is formed.
2. Kraftstoffversorgungsanlage nach Anspruch 1, dadurch gekennzeichnet, dass die Wärmeübertragungskammer (16) mit einer Flüssigkeit gefüllt ist.2. Fuel supply system according to claim 1, characterized in that the heat transfer chamber (16) is filled with a liquid.
3. Kraftstoffversorgungsanlage nach Anspruch 1, dadurch gekennzeichnet, dass die Wärmeübertragungskammer (16) geschlossen oder durchströmbar ausgeführt ist.3. Fuel supply system according to claim 1, characterized in that the heat transfer chamber (16) is designed to be closed or flow-through.
4. Kraftstoffversorgungsanlage nach Anspruch 1, dadurch gekennzeichnet, dass die Wärmeübertragungskammer (16) mit einem Kühlkreislauf der Brennkraftmaschine verbunden ist.4. Fuel supply system according to claim 1, characterized in that the heat transfer chamber (16) is connected to a cooling circuit of the internal combustion engine.
5. Kraftstoffversorgungsanlage nach Anspruch 1, dadurch gekennzeichnet, dass ein Steuerventil vorgesehen ist, über das die Wärmeübertragungskammer (16) mit einem Kühlkreislauf der Brennkraftmaschine verbindbar ist.5. Fuel supply system according to claim 1, characterized in that a control valve is provided, via which the heat transfer chamber (16) is connectable to a cooling circuit of the internal combustion engine.
6. Kraftstoffversorgungsanlage nach Anspruch 1, dadurch gekennzeichnet, dass der Wärmeübertragungsabschnitt (12) der Gasleitung (5) als Wellrohr ausgeführt ist.6. Fuel supply system according to claim 1, characterized in that the heat transfer section (12) of the gas line (5) is designed as a corrugated pipe.
7. Kraftstoffversorgungsanlage nach Anspruch 6, dadurch gekennzeichnet, dass das Wellrohr aus Stahl hergestellt ist.7. Fuel supply system according to claim 6, characterized in that the corrugated tube is made of steel.
8. Kraftstoffversorgungsanlage nach Anspruch 1, dadurch gekennzeichnet, dass der Außenmantel (15) rohrförmig, wellrohrförmig oder schlauchförmig ausgeführt ist.8. Fuel supply system according to claim 1, characterized in that the outer jacket (15) is tubular, corrugated pipe-shaped or tubular.
9. Kraftstoffversorgungsanlage nach Anspruch 1, dadurch gekennzeichnet, dass der Wärmeübertragungsabschnitt (12) der Gasleitung (5) und der Außenmantel (15) im wesentlichen konzentrisch zueinander angeordnet sind. 9. Fuel supply system according to claim 1, characterized in that the heat transfer section (12) of the gas line (5) and the outer jacket (15) are arranged substantially concentric with each other.
10. Kraftstoffversorgungsanlage nach Anspruch 1, dadurch gekennzeichnet, dass die10. Fuel supply system according to claim 1, characterized in that the
Wärmeübertragungskammer (16) stromab einer Einrichtung zur Drucksteuerung und/oder - regelung (3) und stromauf einer Kraftstoffeinspritzvorrichtung (8) vorgesehen ist. Heat transfer chamber (16) downstream of a device for pressure control and / or - regulation (3) and upstream of a fuel injection device (8) is provided.
PCT/EP2008/065981 2008-05-27 2008-11-21 Fuel supply system for a gas-driven internal combustion engine WO2009143908A1 (en)

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DE102008001998.4 2008-05-27
DE102008001998A DE102008001998A1 (en) 2008-05-27 2008-05-27 Fuel supply system for a gas-fueled internal combustion engine

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ITUB20152789A1 (en) * 2015-08-03 2017-02-03 Metatronix S R L SYSTEM FOR THE THERMAL CONDITIONING OF A GASEOUS FUEL
ITUB20152802A1 (en) * 2015-08-03 2017-02-03 Metatronix S R L SYSTEM FOR THE THERMAL CONDITIONING OF A GASEOUS FUEL
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FR3113095B1 (en) * 2020-07-28 2022-06-24 Renault Sas GAS FUEL CIRCUIT HEATING SYSTEM FOR STARTING.

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ITUB20152802A1 (en) * 2015-08-03 2017-02-03 Metatronix S R L SYSTEM FOR THE THERMAL CONDITIONING OF A GASEOUS FUEL
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