DE202009017653U1 - Autogas plant with a conveyor unit - Google Patents
Autogas plant with a conveyor unit Download PDFInfo
- Publication number
- DE202009017653U1 DE202009017653U1 DE202009017653U DE202009017653U DE202009017653U1 DE 202009017653 U1 DE202009017653 U1 DE 202009017653U1 DE 202009017653 U DE202009017653 U DE 202009017653U DE 202009017653 U DE202009017653 U DE 202009017653U DE 202009017653 U1 DE202009017653 U1 DE 202009017653U1
- Authority
- DE
- Germany
- Prior art keywords
- pump
- lpg
- outlet
- liquid
- return
- 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.)
- Expired - Lifetime
Links
Images
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
- F02M21/0218—Details on the gaseous fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
- F02M21/0245—High pressure fuel supply systems; Rails; Pumps; Arrangement of 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
- 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
- F02M21/0203—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels characterised by the type of gaseous fuel
- F02M21/0209—Hydrocarbon fuels, e.g. methane or acetylene
- F02M21/0212—Hydrocarbon fuels, e.g. methane or acetylene comprising at least 3 C-Atoms, e.g. liquefied petroleum gas [LPG], propane or butane
-
- 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
- F02M21/0287—Details on the gaseous fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers characterised by the transition from liquid to gaseous phase ; Injection in liquid phase; Cooling and low temperature storage
-
- 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
- F02M21/029—Arrangement on engines or vehicle bodies; Conversion to gaseous fuel supply 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
- 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
- F02M37/0052—Details on the fuel return circuit; Arrangement of pressure regulators
-
- 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
- F02M21/023—Valves; Pressure or flow regulators in the fuel supply or return system
- F02M21/0239—Pressure or flow regulators therefor
-
- 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
- F02M21/0278—Port fuel injectors for single or multipoint injection into the air intake system
-
- 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
Abstract
Autogasanlage als Einbausatz für Ottomotore, Flüssiggas (LPG) im flüssigen Zustand einspritzend, mit einer Fördereinheit für Flüssiggas (LPG), die eine Flüssigkeitspumpe aufweist, und mit einem Flüssiggastank, dadurch gekennzeichnet, dass die Fördereinheit zum Einbau außerhalb des Flüssiggastanks, insbesondere im Motorraum oder im Radhaus, ausgebildet ist und eine Rückführung (8a), insbesondere einen Nebenkanal, zum Rückführen eines Anteils des geförderten Kraftstoffs vom Auslass (4) der Pumpe (2) zu ihrem Einlass (3) aufweist.Autogasanlage as a kit for gasoline engines, liquid gas (LPG) injecting in the liquid state, with a liquid gas (LPG) conveying unit having a liquid pump, and with a liquefied gas tank, characterized in that the conveyor unit for installation outside of the liquid gas tank, in particular in the engine compartment or in the wheel arch, and has a return (8a), in particular a secondary passage, for returning a portion of the delivered fuel from the outlet (4) of the pump (2) to its inlet (3).
Description
Die Erfindung bezieht sich auf eine Autogasanlage als Einbausatz für Ottomotore, Flüssiggas (LPG) im flüssigen Zustand einspritzend, mit einer Fördereinheit für Flüssiggas (LPG), die eine Flüssigkeitspumpe aufweist, und mit einem Flüssiggastank.The invention relates to an LPG system as a kit for gasoline engines, LPG liquid injection (LPG) in the liquid state, with a liquid gas (LPG) conveying unit having a liquid pump, and with a liquefied gas tank.
Die Erfindung betrifft insbesondere eine unter Niederdruck (etwa 3 bis 12 bar) zu betreibende Autogasanlage, bei der das flüssige Autogas in das Ansaugrohr eingespritzt ist, welches vor den Einlassventilen des Motors angeordnet ist.The invention relates in particular to a low-pressure (about 3 to 12 bar) to be operated autogas plant, in which the liquid LPG is injected into the intake pipe, which is arranged in front of the intake valves of the engine.
Bei den bekannten Autogasanlagen mit flüssiger Einspritzung ist eine Pumpe im Flüssiggastank angeordnet. Nachteilig sind der nicht konstante und nicht kontrollierbare Druckabfall in den relativ langen Leitungen vom Tank zum Motor und die fehlende Reaktion auf die je nach Leistungsanforderung unterschiedlich benötigten Kraftstoffmengen. Auch wirken diese Systeme einem natürlichen Verschleiß der Pumpe durch die fehlenden Schmiereigenschaften des Flüssiggases nicht entgegen. Ein weiterer Nachteil liegt in der schlechten Zugänglichkeit der Pumpe, wenn diese innerhalb des Flüssiggastankes, gerade auch bei einer nachträglichen Montage, angeordnet ist. Ein Austausch dieses Verschleißteiles ist daher umständlich und kostenintensiv.In the known LPG systems with liquid injection, a pump is arranged in the liquefied gas tank. Disadvantages are the non-constant and uncontrollable pressure drop in the relatively long lines from the tank to the engine and the lack of response to the different amounts of fuel required depending on the power requirement. Also, these systems do not counteract natural wear of the pump by the lack of lubricating properties of the liquefied gas. Another disadvantage is the poor accessibility of the pump when it is located within the liquefied gas tank, especially for retrofitting. An exchange of this wearing part is therefore cumbersome and expensive.
Der Erfindung liegt daher die Aufgabe zugrunde, bei einer Autogasanlage der eingangs genannten Art, die unter Niederdruck betrieben wird, diese Nachteile zu vermeiden.The invention is therefore based on the object in an autogas plant of the type mentioned, which is operated under low pressure to avoid these disadvantages.
Diese Aufgabe wird bei der Autogasanlage der eingangs genannten Art erfindungsgemäß dadurch gelöst, dass die Fördereinheit zum Einbau außerhalb des Flüssiggastanks, insbesondere im Motorraum oder im Radhaus, ausgebildet ist und eine Rückführung, insbesondere einen Nebenkanal, zum Rückführen eines Anteils des geförderten Kraftstoffs vom Auslass der Pumpe zu ihrem Einlass aufweist. Durch den Nebenkanal wird das umlaufende Volumen verringert. Die Belastung der Pumpe und die Neigung zur Blasenbildung werden erheblich reduziert.This object is achieved in the LPG system of the type mentioned in the present invention, that the delivery unit for installation outside the LPG tank, in particular in the engine compartment or in the wheel well, is formed and a return, in particular a secondary channel, for returning a portion of the pumped fuel from the outlet Pump has to its inlet. The secondary channel reduces the circulating volume. The load on the pump and the tendency to blister are significantly reduced.
Weiterhin wird vorgeschlagen, dass ein Rücklauf des Kraftstoffs vom Motor zum Tank mit einem in der Rücklaufleitung angeordneten Druckregelventil vorgesehen ist, welches vom Druck des Nebenkanals (= Tankdruck) gesteuert wird. Insbesondere wird vorgeschlagen, dass das Regelventil ein zusätzliches Einstellelement aufweist und dann öffnet, wenn der Druck in der Rücklaufleitung höher als die Summe der Drücke des Nebenkanals (Tankdruck) und des Einstellelements ist. Nur bei ausreichend hohem Druck im Rücklaufkanal vom Motor zur Fördereinheit wird die Verbindung zum Tank geöffnet und so der Systemdruck an den Einspritzventilen in jedem Fall und über eine lange Standzeit der Pumpe aufrechterhalten.It is also proposed that a return of the fuel from the engine to the tank is provided with a arranged in the return line pressure control valve, which is controlled by the pressure of the secondary channel (= tank pressure). In particular, it is proposed that the control valve has an additional adjusting element and then opens when the pressure in the return line is higher than the sum of the pressures of the secondary channel (tank pressure) and the adjusting element. Only when the pressure in the return channel from the engine to the delivery unit is sufficiently high, the connection to the tank is opened, thus maintaining the system pressure at the injectors and, in any case, for a long service life of the pump.
Weiterhin wird vorgeschlagen, dass am Auslass der Pumpe eine Auslasskammer vorgesehen ist, die in der vorgesehenen Einbaulage oberhalb des motorseitigen Auslasses der Fördereinheit angeordnet und über ein Ventil mit der Rücklaufleitung verbunden ist. Die gasförmigen Anteile des Kraftstoffes am Pumpenauslass können auf diese Weise direkt in den Rücklauf zum Tank hin entweichen. Das Ventil verhindert einen zu großen Druckabfall in der Auslasskammer.It is also proposed that an outlet chamber is provided at the outlet of the pump, which is arranged in the intended installation position above the motor-side outlet of the conveyor unit and connected via a valve to the return line. The gaseous portions of the fuel at the pump outlet can escape directly into the return to the tank in this way. The valve prevents excessive pressure drop in the outlet chamber.
Im Folgenden wird ein Ausführungsbeispiel der Erfindung anhand einer Zeichnung näher beschrieben, welche eine erfindungsgemäße Druckregel- und Fördereinheit im Schnitt zeigt.In the following an embodiment of the invention will be described in more detail with reference to a drawing which shows a pressure control and conveying unit according to the invention in section.
Der Einlass
Um die Neigung zur Blasenbildung zu reduzieren, wird die Belastung der Pumpe durch einen Nebenkanal
Die Rücklaufleitung
Der Druck im Flüssiggastank wirkt über den Nebenkanal
Beim Betrieb der Fördereinheit ist es nicht zu vermeiden, dass Blasen, also gasförmige Anteile des Kraftstoffs am Auslass der Pumpe
Die ggf. erforderliche Entgasung der Auslasskammer
Nach Beendigung des Betriebes der Fördereinheit sammeln sich die Gasblasen im oberen Bereich der Auslasskammer
Ein weiterer Vorteil ist, dass für die bekannten Systeme aufwändige Tanks erforderlich sind. Für das erfindungsgemäße System können herkömmliche Autogastanks verwendet werden. Die Kostenersparnis ist hier wesentlich und beträgt ca. 50%. Auch eine Aufrüstung eines veralteten Gaseinblassystems ist ohne Austausch des Tankes möglich.Another advantage is that consuming tanks are required for the known systems. Conventional car gas tanks can be used for the system according to the invention. The cost saving is essential here and is about 50%. An upgrade of an outdated Gaseinblassystems is possible without replacing the tank.
BezugszeichenlisteLIST OF REFERENCE NUMBERS
- 11
- Einlass FördereinheitInlet delivery unit
- 22
- Pumpepump
- 33
- Einlass PumpeInlet pump
- 44
- Auslass PumpeOutlet pump
- 55
- Auslass FördereinheitOutlet delivery unit
- 66
- Ansaugrohrintake
- 77
- RücklaufleitungReturn line
- 88th
- Abdichtungseal
- 8a8a
- Nebenkanal (Rückführung)Secondary channel (feedback)
- 99
- Reduzierventilreducing
- 1010
- RücklaufleitungReturn line
- 1111
- DruckregelventilPressure control valve
- 1212
- Membranmembrane
- 1313
- Federfeather
- 1414
- Einstellschraubeadjustment
- 1515
- gasförmiger Anteilgaseous portion
- 1616
- flüssiger Anteilliquid fraction
- 1717
- Auslasskammeroutlet
- 1818
- Kugelventilball valve
Claims (5)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE202009017653U DE202009017653U1 (en) | 2009-12-28 | 2009-12-28 | Autogas plant with a conveyor unit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE202009017653U DE202009017653U1 (en) | 2009-12-28 | 2009-12-28 | Autogas plant with a conveyor unit |
Publications (1)
Publication Number | Publication Date |
---|---|
DE202009017653U1 true DE202009017653U1 (en) | 2011-05-12 |
Family
ID=43993198
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE202009017653U Expired - Lifetime DE202009017653U1 (en) | 2009-12-28 | 2009-12-28 | Autogas plant with a conveyor unit |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE202009017653U1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10865740B2 (en) | 2017-03-16 | 2020-12-15 | Volvo Truck Corporation | Fuel system for an internal combustion engine |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2645906A (en) * | 1951-01-02 | 1953-07-21 | Phillips Petroleum Co | Liquefied petroleum gas fuel system |
US4463735A (en) * | 1983-06-02 | 1984-08-07 | General Motors Corporation | Dual fuel supply system |
DE19611434A1 (en) * | 1995-05-31 | 1996-12-05 | Avl Verbrennungskraft Messtech | Fuel injection system for IC engine |
DE19635248A1 (en) * | 1996-08-30 | 1998-03-05 | Ficht Gmbh & Co Kg | LPG engine |
AT2958U2 (en) * | 1998-06-05 | 1999-07-26 | Avl List Gmbh | INJECTION SYSTEM |
JP2000038959A (en) * | 1998-05-19 | 2000-02-08 | Aisan Ind Co Ltd | Lpg regulator |
JP2001349256A (en) * | 2000-06-06 | 2001-12-21 | Nippon Soken Inc | Fuel supply system of internal combustion engine |
FR2827362A1 (en) * | 2001-07-13 | 2003-01-17 | Giat Ind Sa | Supply valve for vehicle using compressed natural gas as fuel, uses double electromagnetic piston to control fuel flow between feed pump engine and atmosphere |
DE60109489T2 (en) * | 2000-12-21 | 2006-05-11 | Institut Français du Pétrole, Rueil-Malmaison | METHOD AND DEVICE FOR INJECTING GASEOUS FUEL IN LIQUID PHASE FOR AN INTERNAL COMBUSTION ENGINE |
-
2009
- 2009-12-28 DE DE202009017653U patent/DE202009017653U1/en not_active Expired - Lifetime
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2645906A (en) * | 1951-01-02 | 1953-07-21 | Phillips Petroleum Co | Liquefied petroleum gas fuel system |
US4463735A (en) * | 1983-06-02 | 1984-08-07 | General Motors Corporation | Dual fuel supply system |
DE19611434A1 (en) * | 1995-05-31 | 1996-12-05 | Avl Verbrennungskraft Messtech | Fuel injection system for IC engine |
DE19635248A1 (en) * | 1996-08-30 | 1998-03-05 | Ficht Gmbh & Co Kg | LPG engine |
JP2000038959A (en) * | 1998-05-19 | 2000-02-08 | Aisan Ind Co Ltd | Lpg regulator |
AT2958U2 (en) * | 1998-06-05 | 1999-07-26 | Avl List Gmbh | INJECTION SYSTEM |
JP2001349256A (en) * | 2000-06-06 | 2001-12-21 | Nippon Soken Inc | Fuel supply system of internal combustion engine |
DE60109489T2 (en) * | 2000-12-21 | 2006-05-11 | Institut Français du Pétrole, Rueil-Malmaison | METHOD AND DEVICE FOR INJECTING GASEOUS FUEL IN LIQUID PHASE FOR AN INTERNAL COMBUSTION ENGINE |
FR2827362A1 (en) * | 2001-07-13 | 2003-01-17 | Giat Ind Sa | Supply valve for vehicle using compressed natural gas as fuel, uses double electromagnetic piston to control fuel flow between feed pump engine and atmosphere |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10865740B2 (en) | 2017-03-16 | 2020-12-15 | Volvo Truck Corporation | Fuel system for an internal combustion engine |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
R086 | Non-binding declaration of licensing interest | ||
R079 | Amendment of ipc main class |
Free format text: PREVIOUS MAIN CLASS: F02M0037000000 Ipc: F02M0021020000 |
|
R163 | Identified publications notified | ||
R207 | Utility model specification |
Effective date: 20110616 |
|
R156 | Lapse of ip right after 3 years |
Effective date: 20130702 |