NL2008803C2 - Fuel system for a combustion engine with direct injection, kit for a fuel system and method for directly injecting a fuel in a combustion engine. - Google Patents

Fuel system for a combustion engine with direct injection, kit for a fuel system and method for directly injecting a fuel in a combustion engine. Download PDF

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Publication number
NL2008803C2
NL2008803C2 NL2008803A NL2008803A NL2008803C2 NL 2008803 C2 NL2008803 C2 NL 2008803C2 NL 2008803 A NL2008803 A NL 2008803A NL 2008803 A NL2008803 A NL 2008803A NL 2008803 C2 NL2008803 C2 NL 2008803C2
Authority
NL
Netherlands
Prior art keywords
fuel
pressure
supply
line
high pressure
Prior art date
Application number
NL2008803A
Other languages
Dutch (nl)
Inventor
Servatius Alfons Maria Jaasma
Original Assignee
Vialle Alternative Fuel Systems Bv
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 Vialle Alternative Fuel Systems Bv filed Critical Vialle Alternative Fuel Systems Bv
Priority to NL2008803A priority Critical patent/NL2008803C2/en
Priority to PCT/EP2013/059832 priority patent/WO2013167753A1/en
Application granted granted Critical
Publication of NL2008803C2 publication Critical patent/NL2008803C2/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
    • F02M21/0218—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
    • 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
    • F02D19/066—Retrofit of secondary fuel supply systems; Conversion of engines to operate on multiple fuels
    • 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
    • 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
    • F02M37/0064—Layout or arrangement of systems for feeding fuel for engines being fed with multiple fuels or fuels having special properties, e.g. bio-fuels; varying the fuel composition
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F02M37/0076—Details of the fuel feeding system related to the fuel tank
    • F02M37/0088—Multiple separate fuel tanks or tanks being at least partially partitioned
    • 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
    • F02M43/00—Fuel-injection apparatus operating simultaneously on two or more fuels, or on a liquid fuel and another liquid, e.g. the other liquid being an anti-knock additive
    • 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
    • F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
    • F02M63/02—Fuel-injection apparatus having several injectors fed by a common pumping element, or having several pumping elements feeding a common injector; Fuel-injection apparatus having provisions for cutting-out pumps, pumping elements, or injectors; Fuel-injection apparatus having provisions for variably interconnecting pumping elements and injectors alternatively
    • F02M63/0225—Fuel-injection apparatus having a common rail feeding several injectors ; Means for varying pressure in common rails; Pumps feeding common rails
    • 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

Description

Fuel system for a combustion engine with direct injection, kit for a fuel system and method for directly injecting a fuel in a combustion engine 5 The invention relates to a fuel system for a combustion engine with direct injection. The invention further relates to a kit for a fuel system and to a method for directly injecting a fuel in a combustion engine.
Direct injection increases the efficiency of 10 combustion in in combustion engines. Diesel can be pressurized to pressures over 1000 bar. Gasoline can be pressurized to 100-200 bars. Suitable high pressure pumps are used to supply the fuel to a high pressure fuel line connected e.g. to a common rail allowing the direct 15 injection of the fuel into the combustion chambers.
In this application any pressure above 35 bars is a high pressure.
Bi-fuel systems using a liquid fuel, such as petrol or diesel, and a liquefied vapor fuel such as liquefied 20 petroleum gas (LPG) are known. Such a system is e.g.
disclosed in PCT2009/110792. The high pressure pump is supplied with either fuel and used to pressurize the fuel.
This application relates both to fuel systems arranged to supply fuel alternately as to fuel systems for supplying 25 the fuel in mixed form. This application also relates to systems operating on a single fuel in which a extra fuel system is to be fitted, using a kit.
A problem with the known fuel systems and methods is warm starting the combustion engine. As a result of the heat 30 present in the high pressure pump, liquefied vapor fuel can vaporize forming bubbles. This can result in vapor -lock and failure to start the engine. A well known problem in dual fuel systems is the change over from LPG to gasoline as a 2 result of the relative high pressure of LPG. A further known problem according to prior art is the necessity of a return line for the LPG. Such a return line has the risk of gasoline entering into LPG-storage.
5 It is a goal to improve at least one aspect of the known system and method.
In accordance with a first aspect of the invention a fuel system for a combustion engine with direct injection is provided comprising at least one high pressure fuel line 10 connected to an injection device of the combustion engine for the direct injection of fuel. The high pressure fuel line can comprise a common rail. In an embodiment the high pressure fuel line is connected to a high pressure line supply. This high pressure line supply will supply a fuel to 15 the high pressure fuel line. In an embodiment the high pressure line supply comprises at least a high-pressure fuel pump having an inlet connected to a first fuel storage for a liquid fuel, such as gasoline. The high pressure pump outlet is connected to the high pressure fuel line.
20 In an embodiment the fuel system comprises a second high pressure line supply for supplying a fuel to the high pressure fuel line. This second fuel supply can comprise at least a second fuel storage for liquefied vapor fuel, such as liquid petrol gasoline (LPG). The second high pressure 25 line supply allows feeding a second, different fuel to the high pressure fuel line. The second high pressure line supply can comprise a liquefied vapor fuel pump for supplying that fuel. In this embodiment the second fuel is fed to the high pressure fuel line using a separate fuel 30 supply. This separate system can be completely adapted to the demands of supplying a liquefied petrol gas preventing the vaporization and thereby preventing the known problems.
3
Feeding LPG to the low pressure area of the first fuel supply is prevented.
In an embodiment the most upstream node arranged to receive fuel from both high pressure fuel line supplies is 5 arranged downstream from the high pressure pump connected to the first fuel storage. As the node is downstream from the high pressure pump, the evaporation issue is overcome. The LPG has a sufficient high pressure before the LPG is mixed with the liquid fuel. In an embodiment second LPG fuel 10 supply is arranged to by-pass the high pressure pump.
In an embodiment the high pressure fuel line is arranged to operate at 30, preferably at 38 bars and more preferably at 42 bars or more. In an embodiment the second high pressure line supply is arranged to supply the fuel at 15 at least 42 bars. Such a fuel system is arranged to supply the LPG fuel at a pressure above the critical pressure of LPG for the high pressure fuel line and other downstream features of the combustion engine. The evaporation issue is solved for LPG if operated above the critical pressure.
20 The fuel system according to the invention allows operating all features downstream from the high pressure fuel line at sufficient high pressure to prevent evaporation issues .
In an embodiment the fuel system is arranged to 25 maintain a pressure of at least 30, preferably at least 38 bars and more preferably at least 42 bars in the high pressure fuel line, since 42 bars is the critical pressure for propane. If, using non-return valve and leak-free fuel lines, pressure in the high pressure fuel lines is 30 maintained above 42 bars, bubble forming is prevented.
In an embodiment starting the engine is controlled by a controller arranged to first pressurize the fuel present in the high pressure fuel line to a pressure above 20 bar, 4 preferably 30 and more preferably 40 bars before ignition is attempted.
It is advantageous to arrange the liquefied fuel pump in the liquefied fuel storage. This allows good priming of 5 the pump. Further fitting the LPG storage as an extra fuel supply system is more easily.
In an embodiment the fuel system comprises a controller arranged to control the first and second supplies. This allows alternating the fuel supply or mixing 10 the fuel. In an embodiment the controller is arranged, when starting the combustion engine, to allow supply of fuel from the first supply only. Only liquid fuel is supplied.
In an embodiment a non-return valve is arranged downstream from a pump chamber of the high pressure pump.
15 This prevents entering of the LPG fuel into the low pressure area of the high pressure pump or other low pressure areas of the system. In an embodiment a non-return valve is arranged near a downstream end of the second fuel supply. Preferably this non-return valve is arranged just upstream 20 from the connection node. This prevents the first fuel from entering the second high pressure line supply.
In embodiment the high pressure pump can have a return line (or leak line) for returning fuel to the storage. In an embodiment the high pressure pump comprises a pump chamber 25 having a controlled inlet valve for controlling the amount of fuel supplied to the pump chamber and thereby controlling the amount of fuel to be pressurized.
According to another aspect a fuel system for a combustion engine with direct injection is provided, the 30 fuel system comprising at least one high pressure fuel line connected to an injection device of the combustion engine for the direct injection of fuel, wherein a LPG high pressure line supply for supplying a liquefied fuel vapor 5 fuel, such as liquid petrol gas (LPG), to the high pressure fuel line, the LPG high pressure line supply comprising at least a fuel storage for liquefied vapor fuel and a liquefied vapor fuel pump, and wherein the fuel supply is 5 arranged to supply the LPG at at least 30, preferably at least 38 bars and more preferably at least 42 bar pressure.
In an embodiment the liquefied vapor fuel pump is arranged to operate at at least 30, preferably at least 38 bars and more preferably at least 42 bars.
10 According to a further aspect a kit for fitting a bi fuel system in a high pressure direct injection combustion engine is provided. The internal combustion engine having direct injection comprises a high pressure fuel line. In an embodiment the kit comprises a second high pressure fuel 15 line supply for supplying a second fuel to the high pressure fuel line, the second fuel supply having a second fuel storage for a liquefied vapor fuel such as liquid petrol gasoline (LPG) and a liquefied fuel pump, the kit further comprising a connecting device for connecting the second 20 fuel supply to the high pressure fuel line. The connecting device allows connecting the second high pressure line supply to the high pressure fuel line. The connection device can comprise any generally known leak free connector.
In an embodiment the connection device replaces the 25 existing high pressure fuel line. The connection device can be formed as a T-high pressure fuel line comprising the connection node of the two supplies and the combustion engine .
In an embodiment the connecting device comprises a 30 high pressure fuel line and a non-return valve to be connected to that high pressure fuel line.
In an embodiment the kit comprises a controller arranged for controlling an amount of fuel supplied from the 6 second fuel supply and for controlling an amount of fuel supplied from a first fuel supply formed by the first fuel storage and high pressure pump. The controller can override or replace the already present ECU.
5 According to a yet another aspect a method for injecting fuel in a combustion engine is provided. The method comprises supplying pressurized fuel to a high pressure fuel line and injecting the pressurized fuel from the high pressure fuel line. A first fuel is supplied from a 10 first fuel storage to the high pressure fuel line over a high pressure pump. In an embodiment of the method a a second, different fuel is supplied to the high pressure fuel line from a second fuel storage. By supplying the second fuel, preferably a liquefied vapor fuel such as liquefied 15 petroleum gas, to the high pressure fuel line, the fuel can be supplied at a pressure above the vapor pressure, preventing the formation of bubbles.
In an embodiment the second fuel is pressurized inside the second fuel storage. This evaporation issue, if any 20 remaining, is thereby limited to inside the storage.
Preferably the fuel system and method is return line free. This prevents mixing of fuel and reduces the complexity of the fuel system and method.
In an embodiment the second fuel is pressurized to at 25 least 30, preferably at least 38 bars and more preferably at least 42 bars. At these pressures in combination with higher operating temperatures of the combustion engines, evaporation of the LPG is prevent as these pressures are above the vapor pressure, or even above the critical 30 pressure.
Various embodiments are possible within the scope of the invention. The scope of protection is in no means limited by the illustrated embodiments. Although the 7 invention will now be described with reference to the drawing and the claims, other (partial) aspects of the embodiments illustrated or explicitly or implicitly disclosed herein could be the subject of divisional patent 5 applications.
The invention will now be described with reference to the drawing showing a single embodiment of method and device according to the invention, in which:
Figure 1 shows an embodiment of a fuel system 10 according to the invention.
A fuel system 1 comprises a schematically illustrated engine 21 having four cylinders. A schematically illustrated common rail 20 will allow direct injection of the fuel into the cylinders.
15 Fuel is supplied via the high pressure fuel line 8.
Fuel is supplied to the high pressure fuel line from the liquid fuel supply 9 and/or from liquefied vapor fuel supply 10. Both are fuel supplies connected directly to a node 16 in the high pressure fuel line 8.
20 In a prior art combustion engine the liquid fuel supply 9 is present. The liquid fuel supply 9 comprises a liquid fuel storage 2 having a inlet line 3 and a pump 4. Pump 4 can be located inside or outside the storage 2. A fuel line 5 connects the storage and fuel pump 4 with a high 25 pressure pump 6, here a controlled high pressure pump connected to controller 7. The controller can be an ECU.
The high pressure pump 6 allows increasing the pressure in the fuel to pressures at least above 30 bars, preferably 100-200 bars. The high-pressurized fuel is 30 provided to the high pressure fuel line 8 and supplied to the engine. The controlled high pressure pump 6 allows supplying the exact needed amount of fuel.
8 A kit can be provided to allow fitting a second fuel supply in the already present fuel system. The kit can comprise a second fuel storage 11, a fuel line 18 having a first fuel pump 12, preferably located inside the storage 11 5 and optionally a second pump 14. Fuel line 18 connects the storage 11 with high pressure fuel line 8 at node 16. A non return valve is part of fuel line 18 and is provided close to node 16.
The high pressure line supply 9 and/or high pressure 10 line supply 10 supply fuel to the high pressure fuel line 8 and thereby to the common rail for direct injection.
Storage 11 can be a liquefied vapor fuel storage, preferably arranged for storing liquefied petroleum gas. A safety valve 13 can close the supply of fuel from storage 15 11.
Pump 12, and in an embodiment in combination with pump 14, is arranged to supply the second fuel from storage 11 at a pressure of at least 30, preferably at least 38, and more preferably at least 42 bars in fuel line 18. This will 20 prevent evaporation of liquefied petroleum gas at all times. Node 16 is shown schematically. In an embodiment a suitable connector connects fuel line 18 and fuel line 8.
9
Clauses 1. Fuel system for a combustion engine with direct injection, comprising 5 • at least one high pressure fuel line connected to an injection device of the combustion engine for the direct injection of fuel, • a first high pressure line supply for supplying a fuel to the high pressure fuel line, the first high pressure 10 line supply comprising at least a high-pressure fuel pump having an inlet connected to a first fuel storage for a liquid fuel, such as gasoline, and having an outlet connected to the high pressure fuel line, and • a second high pressure line supply for supplying a fuel 15 to the high pressure fuel line, the second high pressure line supply comprising at least a second fuel storage for liquefied vapor fuel, such as liquid petrol gas (LPG), and a liquefied vapor fuel pump.
2. Fuel system according to claim 1, wherein a 20 most upstream node arranged to receive fuel from both high pressure line supplies is arranged downstream from the high pressure pump connected to the first fuel storage.
3. Fuel system according to claim 1, wherein the second high pressure line supply is arranged to by-pass the 25 high pressure pump.
4. Fuel system according to any of the previous claims, wherein the high pressure fuel line is arranged to operate at 42 bars or more and the second high pressure line supply is arranged to supply the fuel at at least 42 bars.
30 5. Fuel system according to claim 4, wherein the fuel system is arranged to maintain a pressure of at least 42 bars in the high pressure fuel line.
10 6. Fuel system according to any of the previous claims, wherein the liquefied vapor fuel pump is arranged in the liquefied vapor fuel storage.
7. Fuel system according to any of the previous 5 claims, also comprising a controller arranged to control the first and second supplies.
8. Fuel system according to claim 7, wherein the controller is arranged, when starting the combustion engine, to allow supply of fuel from the first supply only.
10 9. Fuel system according to claim 7 or 8, wherein the controller is arranged to switch between respective fuel supplies for alternating fuel supply.
10. Fuel system according to claim 7 or 8, wherein the controller is arranged to mix fuel from fuel 15 supplies.
11. Fuel system according to any of the previous claims, wherein a non-return valve is arranged downstream from a pump chamber of the high pressure pump and a nonreturn valve is arranged near a downstream end of the second 20 high pressure line supply.
12. Fuel system according to any of the previous claims, wherein the high pressure pump comprises a controlled inlet valve for controlling an amount of fuel supplied to a pump chamber of the high pressure pump.
25 13. Fuel system for a combustion engine with direct injection, comprising at least one high pressure fuel line connected to an injection device of the combustion engine for the direct injection of fuel, wherein a LPG high pressure line supply for supplying a liquefied vapor fuel, 30 such as liquid petrol gas (LPG), to the high pressure fuel line, the LPG high pressure line supply comprising at least a fuel storage for liquefied vapor fuel and a liquefied 11 vapor fuel pump, and wherein the fuel supply is arranged to supply the LPG at at least 42 bar pressure.
14. Fuel system according to any of the previous claims, wherein the liquefied vapor fuel pump is arranged to 5 operate at at least 42 bars.
15. Kit for fitting a bi-fuel system in a high pressure direct injection combustion engine having a high pressure fuel line, the kit comprising a second high pressure fuel line supply for supplying a second fuel to the 10 high pressure fuel line, the second fuel supply having a second fuel storage for a liquefied vapor fuel such as liquid petrol gas (LPG) and a liquefied vapor fuel pump, the kit further comprising a connecting device for connecting the second fuel supply to the high pressure fuel line.
15 16. Kit according to claim 15, wherein the connecting device comprises a high pressure fuel line and a non-return valve to be incorporated in that high pressure fuel line.
17. Kit according to claims 15 or 16, wherein the 20 kit comprises a controller arranged for controlling an amount of fuel supplied from the second fuel supply and for controlling an amount of fuel supplied from a first fuel supply formed by the first fuel storage and high pressure pump .
25 18. Method for injecting fuel in a combustion engine, the method comprising supplying pressurized fuel to a high pressure fuel line and injecting the pressurized fuel from the high pressure fuel line, wherein a first fuel is supplied from a first fuel storage to the high pressure fuel 30 line over a high pressure pump and wherein a second, different fuel is supplied to the high pressure fuel line from a second fuel storage.
12 19. Method according to claim 18, wherein the second fuel is pressurized inside the second fuel storage.
20. Method according to claim 18 or 19, wherein the second fuel is pressurized to at least 42 bars.
5

Claims (20)

1. Brandstofsysteem voor een interne 5 verbrandingsmotor met directe injectie, omvattende • ten minste één hoge druk leiding verbonden met een injective-inrichting van de verbrandingsmotor voor directe injectie van brandstof, • een eerste hoge druk leidingtoevoer voor het toevoeren 10 van een brandstof aan de hoge druk leiding, waarbij de eerste hoge druk leidingtoevoer omvat ten minste een hoge druk brandstofpomp die een ingang heeft die verbonden is met een eerste brandstofopslag voor een vloeibare brandstof, zoals benzine, en ten minste een 15 uitgang die verbonden is met de hoge druk leiding, en • een tweede hoge druk leidingtoevoer voor het toevoeren van een brandstof aan de hoge druk leiding, waarbij de tweede hoge druk leidingtoevoer omvat ten minste een tweede brandstofvoorraad voor vloeibaar gemaakte 20 dampbrandstof, zoals vloeibaar petroleumgas (LPG), en een vloeibaar gemaakte dampbrandstof pomp.A fuel system for an internal direct-injection internal combustion engine, comprising • at least one high-pressure line connected to an injection device of the direct-fuel injection engine, • a first high-pressure line supply for supplying a fuel to the high pressure conduit, the first high pressure conduit supply comprising at least one high pressure fuel pump having an inlet connected to a first fuel storage for a liquid fuel, such as gasoline, and at least one outlet connected to the high pressure conduit and a second high-pressure line supply for supplying a fuel to the high-pressure line, wherein the second high-pressure line supply comprises at least a second fuel supply for liquefied vapor fuel, such as liquefied petroleum gas (LPG), and a liquefied vapor fuel pump. 2. Brandstofsysteem volgens conclusie 1, waarbij een meest stroomopwaartse node ingericht om brandstof van beide hoge druk leidingtoevoeren te ontvangen is ingericht 25 stroomafwaarts van de hoge druk pomp verbonden met de eerste brandstofopslag.2. Fuel system as claimed in claim 1, wherein a most upstream node arranged to receive fuel from both high-pressure pipe supplies is arranged downstream of the high-pressure pump connected to the first fuel storage. 3. Brandstofsysteem volgens conclusie 1, waarbij de tweede hoge druk leidingtoevoer is ingericht om de hoge druk pomp te bypassen.The fuel system of claim 1, wherein the second high pressure pipe supply is adapted to bypass the high pressure pump. 4. Brandstofsysteem volgens één van de voorgaande conclusies, waarbij de hoge druk leiding is ingericht om werkzaam te zijn bij 42 bar of meer en waarbij de tweede hoge druk leidingtoevoer is ingericht om de brandstof toe te voeren op ten minste 42 bar.A fuel system according to any one of the preceding claims, wherein the high pressure line is arranged to operate at 42 bar or more and wherein the second high pressure line supply is arranged to supply the fuel at at least 42 bar. 5. Brandstofsysteem volgens conclusie 4, waarbij het brandstofsysteem is ingericht om een druk van ten minste 5 42 bar in de hoge druk leiding te behouden.The fuel system of claim 4, wherein the fuel system is arranged to maintain a pressure of at least 5 42 bar in the high pressure conduit. 6. Brandstofsysteem volgens één van de voorgaande conclusies, waarbij de vloeibaar gemaakte dampbrandstof pomp is ingericht in de vloeibaar gemaakte dampbrandstof opslag.The fuel system of any one of the preceding claims, wherein the liquefied vapor fuel pump is arranged in the liquefied vapor fuel storage. 7. Brandstofsysteem volgens één van de voorgaande conclusies, ook omvattende een besturing die is ingericht om de eerste en tweede toevoeren te controleren.A fuel system according to any one of the preceding claims, also comprising a control adapted to control the first and second feeds. 8. Brandstofsysteem volgens conclusie 7, waarbij de besturing is ingericht, wanneer de verbrandingsmotor 15 wordt gestart, om alleen brandstof van de eerste toevoer toestaat om toe te voeren.8. Fuel system according to claim 7, wherein the control is arranged, when the combustion engine 15 is started, to allow only fuel from the first supply to be supplied. 9. Brandstofsysteem volgens conclusie 7 of 8, waarbij de besturing is ingericht om tussen de respectievelijke brandstoftoevoeren te schakelen om de 20 brandstoftoevoer af te wisselen.9. Fuel system according to claim 7 or 8, wherein the control is adapted to switch between the respective fuel supplies in order to alternate the fuel supply. 10. Brandstofsysteem volgens conclusie 7 of 8, waarbij de besturing is ingericht om brandstof van de brandstoftoevoeren te mengen.10. Fuel system according to claim 7 or 8, wherein the control is adapted to mix fuel from the fuel supplies. 11. Brandstofsysteem volgens één van de 25 voorgaande conclusies, waarbij een één-wegklep is ingericht stroomafwaarts van een pompkamer van de hoge druk pomp en een één-wegklep is ingericht nabij een stroomafwaarts einde van de tweede hoge druk leidingtoevoer.11. Fuel system according to any of the preceding claims, wherein a one-way valve is arranged downstream of a pump chamber of the high-pressure pump and a one-way valve is arranged near a downstream end of the second high-pressure pipe supply. 12. Brandstofsysteem volgens één van de 30 voorgaande conclusies, waarbij de hoge druk pomp een bestuurde ingangsklep omvat voor het controleren van een hoeveelheid brandstof die wordt toegevoerd aan een pompkamer van de hoge druk pomp.12. Fuel system as claimed in any of the foregoing claims, wherein the high-pressure pump comprises a controlled input valve for controlling a quantity of fuel that is supplied to a pump chamber of the high-pressure pump. 13. Brandstofsysteem voor een verbrandingsmotor met directe injectie, omvattende ten minste één hoge druk leiding verbonden met een injectie-inrichting van de verbrandingsmotor voor de directe injectie van brandstof, 5 waarbij een LPG hoge druk leidingtoevoer voor het toevoeren van een vloeibaar gemaakte dampbrandstof zoals vloeibaar petroleumgas (LPG) aan de hoge druk leiding, waarbij de LPG hoge druk leidingtoevoer omvat ten minste een brandstofvoorraad voor vloeibaar gemaakte dampbrandstof en 10 een vloeibaar gemaakte dampbrandstof pomp, en waarbij de brandstoftoevoer is ingericht om de LPG op ten minste 42 bar druk toe te voeren.13. Fuel system for a direct injection combustion engine, comprising at least one high pressure line connected to a fuel injection direct injection engine, wherein an LPG high pressure line supply for supplying a liquefied vapor fuel such as liquid petroleum gas (LPG) on the high pressure conduit, wherein the LPG high pressure conduit supply comprises at least one fuel supply for liquefied vapor fuel and a liquefied vapor fuel pump, and wherein the fuel supply is adapted to supply the LPG at at least 42 bar pressure feed. 14. Brandstofsysteem volgens één van de voorgaande conclusies, waarbij de vloeibaar gemaakte 15 dampbrandstof pomp is ingericht ten minste een druk van 42 bar af te geven.14. Fuel system according to one of the preceding claims, wherein the liquefied vapor fuel pump is arranged to release at least a pressure of 42 bar. 15. Inbouwset voor een twee-brandstofsysteem in een hoge druk directe injectie verbrandingsmotor omvattende een hoge druk brandstofleiding, waarbij de inbouwset een 20 tweede hoge druk brandstofleidingtoevoer omvat voor het toevoeren van een tweede brandstof aan de hoge druk brandstofleiding, waarbij de tweede brandstoftoevoer een tweede brandstofopslag voor een vloeibaar gemaakte dampbrandstof zoals vloeibaar petroleumgas (LPG) en een 25 vloeibaar gemaakte dampbrandstof pomp, waarbij de inbouwset verder omvat een verbindingsinrichting voor het verbinden van de tweede brandstoftoevoer aan de hoge druk brandstofleiding.15. Installation kit for a two-fuel system in a high-pressure direct injection combustion engine comprising a high-pressure fuel line, wherein the installation set comprises a second high-pressure fuel line supply for supplying a second fuel to the high-pressure fuel line, the second fuel supply having a second fuel storage for a liquefied vapor fuel such as liquefied petroleum gas (LPG) and a liquefied vapor fuel pump, the mounting kit further comprising a connecting device for connecting the second fuel supply to the high pressure fuel line. 16. Inbouwset volgens conclusie 15, waarbij de 30 verbindingsinrichting een hoge druk brandstofleiding omvat en een één-wegklep om op te nemen in genoemde hoge druk brandstofleiding.16. Installation kit according to claim 15, wherein the connecting device comprises a high-pressure fuel line and a one-way valve for receiving in said high-pressure fuel line. 17. Inbouwset volgens conclusie 15 of 16, waarbij de inbouwset een besturing omvat die is ingericht voor het controleren van een hoeveelheid brandstof die wordt toegevoerd via de tweede brandstoftoevoer en voor het 5 controleren van een hoeveelheid brandstof die wordt toegevoerd via een eerste brandstoftoevoer gevormd door de eerste brandstofopslag en hoge druk pomp.17. Built-in set according to claim 15 or 16, wherein the built-in set comprises a control adapted to control an amount of fuel supplied via the second fuel supply and to control an amount of fuel supplied via a first fuel supply formed by the first fuel storage and high pressure pump. 18. Werkwijze voor het injecteren van brandstof in een verbrandingsmotor, waarbij de werkwijze omvat het 10 toevoeren van brandstof onder druk aan een hoge druk brandstofleiding en het injecteren van de op druk gebrachte brandstof uit de hoge druk brandstofleiding, waarbij een eerste brandstof wordt toegevoerd vanuit een eerste brandstofvoorraad aan de hoge druk brandstofleiding via een 15 hoge druk pomp en waarbij een tweede, andere brandstof wordt toegevoerd aan de hoge druk brandstofleiding vanuit een tweede brandstofvoorraad.18. Method for injecting fuel into a combustion engine, the method comprising supplying pressurized fuel to a high-pressure fuel line and injecting the pressurized fuel from the high-pressure fuel line, wherein a first fuel is supplied from a first fuel supply to the high-pressure fuel line via a high-pressure pump and wherein a second, different fuel is supplied to the high-pressure fuel line from a second fuel supply. 19. Werkwijze volgens conclusie 18, waarbij de tweede brandstof binnen de tweede brandstofvoorraad op druk 20 wordt gebracht.The method of claim 18, wherein the second fuel is pressurized within the second fuel supply. 20. Werkwijze volgens conclusie 18 of 19, waarbij de brandstof op een druk van ten minste 42 bar wordt gebracht.A method according to claim 18 or 19, wherein the fuel is brought to a pressure of at least 42 bar.
NL2008803A 2012-05-11 2012-05-11 Fuel system for a combustion engine with direct injection, kit for a fuel system and method for directly injecting a fuel in a combustion engine. NL2008803C2 (en)

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PCT/EP2013/059832 WO2013167753A1 (en) 2012-05-11 2013-05-13 Fuel system, kit and method for directly injecting a fuel in a combustion engine

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WO2017174118A1 (en) 2016-04-05 2017-10-12 Befinal Gmbh Fuel exchange and fuel delivery system for fuel installations
TR201711657A2 (en) * 2017-08-08 2019-02-21 Goekhan Say Gasoline usage and high pressure pump regulator in LPG usage in direct injection engines

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WO2009110792A1 (en) * 2008-03-03 2009-09-11 Vialle Alternative Fuel Systems B.V. Arrangement and method for an internal combustion engine with direct dual fuel injection
DE102008043930A1 (en) * 2008-11-20 2010-06-02 Robert Bosch Gmbh Fuel injection system for internal-combustion engine, has two fuel containers with fuel injection valve for combustion chamber of internal-combustion engine
WO2011059316A1 (en) * 2009-11-12 2011-05-19 Vialle Alternative Fuel Systems B.V. Fuel supply system and high-pressure pump for combustion engine

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WO2009110792A1 (en) * 2008-03-03 2009-09-11 Vialle Alternative Fuel Systems B.V. Arrangement and method for an internal combustion engine with direct dual fuel injection
DE102008043930A1 (en) * 2008-11-20 2010-06-02 Robert Bosch Gmbh Fuel injection system for internal-combustion engine, has two fuel containers with fuel injection valve for combustion chamber of internal-combustion engine
WO2011059316A1 (en) * 2009-11-12 2011-05-19 Vialle Alternative Fuel Systems B.V. Fuel supply system and high-pressure pump for combustion engine

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