WO2007049781A1 - Circuit d'alimentation en carburant pour carburant a point d'ebullition bas - Google Patents

Circuit d'alimentation en carburant pour carburant a point d'ebullition bas Download PDF

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Publication number
WO2007049781A1
WO2007049781A1 PCT/JP2006/321593 JP2006321593W WO2007049781A1 WO 2007049781 A1 WO2007049781 A1 WO 2007049781A1 JP 2006321593 W JP2006321593 W JP 2006321593W WO 2007049781 A1 WO2007049781 A1 WO 2007049781A1
Authority
WO
WIPO (PCT)
Prior art keywords
fuel
tank
engine
supply device
solenoid valve
Prior art date
Application number
PCT/JP2006/321593
Other languages
English (en)
Japanese (ja)
Inventor
Takeshi Tokumaru
Takeshi Seto
Original Assignee
Isuzu Motors Limited
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 Isuzu Motors Limited filed Critical Isuzu Motors Limited
Publication of WO2007049781A1 publication Critical patent/WO2007049781A1/fr

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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
    • F02D19/02—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
    • 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
    • F02D19/026—Measuring or estimating parameters related to the fuel supply system
    • F02D19/027—Determining the fuel pressure, temperature or volume flow, the fuel tank fill level or a valve position
    • 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
    • F02M21/0221—Fuel storage reservoirs, e.g. cryogenic tanks
    • F02M21/0224—Secondary gaseous fuel storages
    • 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
    • F02M21/0236—Multi-way valves; Multiple valves forming a multi-way valve system
    • 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
    • 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
    • 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 present invention relates to an engine having a plurality of fuel tanks for storing low-boiling point fuel, in particular, a diesel fuel supply device that uses dimethyl ether (DME) as fuel and injects liquid DME into a cylinder. It is about. Background art
  • DME dimethyl ether
  • DME is an ether having the structure of the chemical formula CH 3 OCH 3 and has a boiling point of about ⁇ 25 ° C., and can be easily liquidified by applying pressure or low temperature. For this reason, it is easy to transport and store, has few harmful components in exhaust gas, and has a high cetane number, which is an indicator of fuel compatibility with diesel fuel. R & D for fuel is being promoted for practical use. Research and development using DME as fuel is being carried out not only on diesel engines but also on gas turbine engines, for example. By the way, in order to store the liquefied DME in the fuel tank, it is necessary to pressurize, and the fuel tank becomes a cylinder-shaped pressure vessel.
  • Japanese Laid-Open Patent Publication No. 2 0 0 5-7 6 5 4 8 discloses a compound of liquefied fuel.
  • a vehicle is disclosed in which a number of fuel tanks are distributed and mounted on both sides of a vehicle chassis.
  • the fuel supply device shown in FIG. 3 is a so-called common rail type fuel supply device, and is provided between a fuel injection pump 1 for increasing the fuel up to an injection pressure and a fuel injection valve 2 attached to each cylinder of the engine.
  • a common rail 3 which is an accumulator for high-pressure fuel.
  • the high-pressure fuel sent from the fuel injection pump 1 is once accumulated in the common rail 3 and then injected into each cylinder by the fuel injection valve 2.
  • These fuel injection pump 1, common rail 3 and fuel injection valve 2 are devices mounted on the diesel engine.
  • DME fuel is stored in fuel tanks 4 A and 4 B attached to the vehicle body, and in-tank pumps 5 A and 5 B are installed in each fuel tank.
  • the fuel feed pipes 6 A and 6 B that send fuel from the fuel tank to the engine fuel supply system are connected to the discharge ports of the tank pumps 5 A and 5 B. These pipes are connected to the fuel feed pump 7 respectively. Connected to the suction side.
  • the DME in the fuel tank is supplied to the fuel injection pump 1 by the tank pumps 5 A and 5 B and the fuel feed pump 7.
  • the DM E supplied to the fuel injection pump 1 is larger than the injection amount from the fuel injection valve 2, and the fuel tanks 4A, 4 Fuel return pipes 8 A and 8 B for returning surplus fuel are connected to B.
  • a fuel cooler 9 for cooling is interposed in the piping on the inlet side of the fuel injection pump 1 to prevent malfunction of the fuel spray pump 1 due to vaporization of DME.
  • the fuel tanks 4 A and 4 B If it is placed in the position, the temperature in the tank will differ depending on the surrounding environment or the driving conditions of the vehicle. Since the saturated vapor pressure of DME, which is a low boiling point fuel, changes with temperature, the pressure inside each fuel tank will also differ. Fuel return piping 8 A and 8 B return a large amount of surplus fuel into the fuel tank with low pressure, and the amount of fuel delivered from the fuel tank changes according to the pressure. This results in a bias in the amount of fuel. This is the reason why the fuel amount imbalance is difficult in multiple fuel tanks when using DME as fuel.
  • a manual switching valve 1 0 1 is arranged in the piping for sending fuel from each fuel storage tank, and a manual switching valve 1 0 is installed in the piping for returning fuel. 2 is arranged, and each fuel tank is switched and used one by one.
  • the manual switching valves 1 0 1 and 1 0 2 communicate each pipe with only one fuel tank. When the remaining amount of DME in one fuel tank decreases, it communicates with the other fuel tank. Can be switched manually.
  • Japanese Patent Laid-Open No. 2 0 0 2-1 9 5 1 2 1 discloses a fuel supply system for a plurality of fuel tanks.
  • a fuel supply device is described in which a solenoid valve is provided in each of the pipe and the fuel return pipe, and the solenoid valve is switched in accordance with a driver's command when the liquid level of one fuel tank decreases.
  • a rotation speed control device is provided in a fuel feed pump connected to each of a plurality of fuel tanks, and is detected by a liquid level gauge
  • a fuel supply device that controls the amount of fuel supplied to each engine by the fuel supply pump according to the level of the fuel and consumes fuel in a plurality of fuel tanks evenly.
  • a manual switching valve is arranged to switch the fuel tank to be used. When the remaining amount of one fuel tank decreases, the engine is stopped and the manual switching valve is turned off. It is necessary to operate and switch the fuel system to the other fuel tank.
  • the solenoid valves provided in the fuel feed pipes and the fuel return pipes of the plurality of fuel tanks are used as the driver's command. For those that switch accordingly, the solenoid valve is switched by remote control, so there is no need to stop the vehicle.
  • the low-boiling point fuel is not always in a liquid state in unused piping systems. In other words, when switching from one fuel tank to another, there is a possibility that vaporized fuel exists in the fuel feed pipes connected to other fuel tanks to be used after switching.
  • An object of the present invention is to solve such a problem in an engine using a low boiling point fuel and having a plurality of fuel tanks by a simple method. Disclosure of the invention
  • the present invention provides an engine fuel supply apparatus including a plurality of fuel tanks for storing low-boiling point fuel such as DME, and an electromagnetic valve is disposed in a fuel pipe connected to each fuel tank.
  • the solenoid pressure is opened by sufficiently raising the fuel pressure to be delivered. That is, the present invention, as described in claim 1,
  • Each of the fuel tanks is connected to the fuel system of the engine by a fuel feed pipe and a fuel return pipe, and has a tank pump for sending fuel to the fuel feed pipe.
  • a solenoid valve that is opened and closed by a control device is installed in the fuel feed pipe and the fuel return pipe, and the control device controls the solenoid valve of each fuel tank to send fuel to the fuel system of the engine.
  • the control device controls the solenoid valve of each fuel tank to send fuel to the fuel system of the engine.
  • a connecting pipe that connects the fuel feed pipe upstream of the solenoid valve to the fuel tank and a pressure regulating valve that is interposed in the connecting pipe;
  • the control device switches the fuel tank that sends out the fuel
  • the fuel tank that sends out the fuel after switching is operated for a predetermined period of time, and then the fuel feed pipe of the fuel tank and the fuel return It was configured to open the solenoid valve installed in the pipe.
  • the solenoid valve is installed in the fuel feed pipe and the fuel return pipe connected to each fuel tank for storing DME and the like, and the fuel used by opening and closing these solenoid valves by the control device. Change the tank. Then, a connecting pipe that connects the upstream side of the solenoid valve of the fuel feed pipe to the fuel tank and a pressure regulating valve that is interposed in the connecting pipe are provided, and fuel from the new (after switching) fuel tank to the engine fuel system When the fuel is sent out, the in-tank pump of the fuel tank is operated for a predetermined period before the solenoid valve is opened.
  • the fuel supply device of the present invention uses a plurality of fuel tanks in sequence, and the tank soot pump of the fuel tank before use is stopped.
  • the tank pump is driven prior to the switching of the fuel tank to pressurize the fuel to increase the pressure and send it to the fuel feed pipe.
  • the delivered fuel circulates to the fuel tank through a connecting pipe equipped with a pressure regulating valve (electromagnetic valve having a throttle).
  • the pressure regulating valve installed in the connecting pipe is closed when the solenoid valve installed in the fuel feed pipe is opened.
  • a pressure sensor that detects pressure upstream of the electromagnetic valve is installed in the fuel feed pipe, and the tank pump is operated. The period until the pressure detected by the sensor reaches a predetermined value can be set. When configured in this manner, it is possible to more reliably prevent steam such as DME from entering the fuel feed pipe.
  • the control device may be configured to open and close the solenoid valve according to the driver's command when the fuel tank is switched.
  • a level sensor is provided in each of the plurality of fuel tanks, and the control device sends out fuel when the fuel level drops to a predetermined value. It is preferable to switch the fuel tank, which makes it possible to perform automatic switching without bothering humans.
  • the Monrail fuel injection pump is a precision pump that pressurizes to a very high pressure and is susceptible to damage from inhalation of air bubbles.
  • the present invention is suitable as a fuel supply device for a common rail diesel engine.
  • FIG. 1 is a view showing a fuel supply apparatus having a plurality of fuel tanks according to the present invention.
  • FIG. 2 is a flowchart showing the operation procedure of the present invention.
  • FIG. 3 is a view showing a conventional fuel supply apparatus having a plurality of fuel tanks.
  • FIG. 1 shows an outline of a common-rail fuel supply device for a diesel engine to which the present invention is applied.
  • the basic equipment configuration and operation of the common rail fuel supply system is the same as that of FIG. 3, which is the prior art.
  • the diesel engine is equipped with a common rail 3 that is a fuel accumulator pipe between a fuel injection pump 1 and a fuel injection valve 2 that increase the pressure of the fuel. Spray.
  • DME as fuel is stored in fuel tanks 4 A and 4 B attached to the vehicle body.
  • Tank pumps 5 A and 5 B are installed in each fuel tank, and fuel feed pipes 6 A and 6 B for sending fuel to the fuel system of the engine are connected to their discharge ports. These pipes are respectively connected to the suction side of the fuel feed pump 7, and DME is supplied to the fuel injection pump 1 via the fuel cooler 9 by these pumps.
  • Fuel return pipes 8 A and 8 B are connected to the fuel tanks 4 A and 4 B for returning surplus fuel from the engine fuel system.
  • the solenoid valves 10 A and 1 OB are disposed in the fuel feed pipes 6 A and 6 B, respectively, and the fuel return pipes 8 A and 8 B are respectively provided.
  • Solenoid valves 1 1 A, 1 IB are arranged. Since these solenoid valves are for switching the fuel tank to be used, instead of placing solenoid valves in the fuel feed pipes 6 A and 6 B and the fuel return pipes 8 A and 8 B, the branch of the fuel feed pipe Two three-way solenoid valves can be installed at the head and the branch of the fuel return pipe. Also, in the fuel feed pipes 6A and 6B, the upstream side of the solenoid valves 10A and 1OB is connected to the downstream side of the solenoid valves 11A and 11B of the fuel return pipes 8A and 8B. Tubes 1 2 A and 1 2 B are connected to each other.
  • Pressure regulating valves 1 3 A and 1 3 B are installed in the connecting pipes 1 2 A and 1 2 B, and the pressure regulating valves are electromagnetic valves having a throttle part.
  • Each solenoid valve and pressure regulating valve arranged in the fuel feed pipe and the fuel return pipe are controlled by the control device 14.
  • a signal indicating the liquid level of the fuel tanks 4 A and 4 B is input to the control device 14.
  • signals from pressure sensors 15 A and 15 B provided upstream of solenoid valves 10 A and 10 B of fuel feed pipes 6 A and 6 B are also input.
  • the sensor is not indispensable, and it is possible to omit it and perform switching control.
  • the fuel supply device of the present invention switches the fuel in a plurality of fuel tanks and supplies it to the engine.
  • the fuel tank supplying the DME that is, the fuel tank used Is constantly checked (step S 1) and the liquid level is detected (step S 2). If the liquid level is higher than the specified value, just repeat this and you will not proceed to the next step in the flowchart.
  • step S 1 the fuel tank supplying the DME, that is, the fuel tank used
  • step S 2 When the remaining amount of fuel in fuel tank 4 A decreases and it is detected in step S 2 that the liquid level is below the specified value, the flow proceeds to step S 3 and the liquid level of the fuel tank in fuel tank 4 B After confirming that DME remains sufficiently, control to switch the fuel tank is executed.
  • the in-tank pump 5 B of the fuel tank 4 B is activated to send out DME to the fuel feed pipe 6 B (step S 4).
  • the state of each solenoid valve and the pump in the tank is as shown in St. 4 of the table in FIG. 2.
  • the tank pump 5 A of the fuel tank 4 A is continuously driven, and the DME is the fuel feed pipe 6
  • Electromagnetic valve 1 with open A 1 It is supplied to the engine via OA, and the electromagnetic valve 10 B arranged in the fuel feed pipe 6 B of the fuel tank 4 B is closed.
  • the DME delivered from the in-tank pump 5 B passes through the opened pressure regulating valve 13 B and circulates to the fuel tank 4 B through the connecting pipe 12 B.
  • step S 5 The pressure in the fuel feed pipe 6 B is detected by the pressure sensor 15 5 B (step S 5).
  • step S 6 the pressure reaches a predetermined value equal to or higher than the saturated steam pressure
  • the process proceeds to step S 6 and the electromagnetic in the fuel feed pipe 6 B Solenoid valve 1 1 B of valve 1 0 B and fuel return pipe 8 B is opened, and pressure regulating valve 1 3 B is closed at the same time.
  • the state of each solenoid valve and in-tank pump at this time is as shown in St. 6 of the table in FIG. 2.
  • the in-tank pump 5 A of the fuel tank 4 A is still driven, and the DME It is supplied to the engine from both tanks 4A and 4B. In this way, fuel shortage during switching is prevented, and pressure fluctuations associated with switching are mitigated.
  • a pressure sensor is installed to detect that the pressure in the fuel feed pipe 6 B has reached a predetermined value or more.
  • the tank pump The solenoid valve 1 1 B may be opened corresponding to the time after the start of 5 B.
  • step S 7 When the solenoid valve 1 1 B is opened, the elapsed time thereafter is counted (step S 7).
  • the operation of the in-tank pump 5 A of the fuel tank 4 A is stopped and the fuel feed is stopped. Close the solenoid valve 1 OA of pipe 6 A to the state of St. 8 (step S 8).
  • DME is supplied to the engine from both fuel tanks for a predetermined time, the use of the fuel tank that has been used is stopped, and the fuel tank switching control is completed.
  • the present invention provides an engine fuel supply apparatus having a plurality of fuel tanks for storing low-boiling point fuel such as DME, in which a solenoid valve is provided in a fuel pipe connected to each fuel tank. It is possible to switch automatically when the fuel tank to which fuel is sent out is switched, and to sufficiently raise the fuel pressure to be sent out at the time of switching to prevent fuel vapor from being mixed It is. Therefore, the present invention can be applied to various engines using low boiling point fuel. In the above embodiment, the present invention is applied to a common rail type diesel engine fuel supply device, but is not limited to this, and various modifications such as application to an LPG fuel supply device are possible. Obviously it is possible.

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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)
  • Fuel-Injection Apparatus (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)

Abstract

L'invention concerne un circuit d'alimentation en carburant pour moteur comprenant une pluralité de réservoirs de carburant qui permettent de stocker un carburant à point d'ébullition bas tel que le DME. Dans ce circuit, les réservoirs de distribution de carburant sont couplés automatiquement au circuit d'une manière permettant d'empêcher le mélange de vapeur au carburant au moment du couplage. Une électrovanne (10A) ou un dispositif analogue sont disposés dans les tuyaux (6A, 6B) d'alimentation et dans les tuyaux (8A, 8B) de retour de carburant reliés aux réservoirs (4A, 4B) pour carburant à point d'ébullition bas, et le réservoir d'essence devant être utilisé est sélectionné par ouverture/fermeture des électrovannes au moyen d'une commande (14). Ce circuit comprend en outre des conduits (12A, 12B) servant à relier les tuyaux d'alimentation aux réservoirs de carburant, et des soupapes (13A, 13B) régulatrices de pression installées dans ces conduits de raccord. Lors du couplage des réservoirs, une pompe installée dans le réservoir est actionnée pendant une durée prédéterminée avant l'ouverture de l'électrovanne de manière à mettre de carburant sous pression. Ce processus permet de liquéfier de manière sûre le carburant à faible point d'ébullition, et d'empêcher les défauts de fonctionnement provoqués par des vapeurs mélangées au carburant dans le circuit d'alimentation en carburant.
PCT/JP2006/321593 2005-10-28 2006-10-24 Circuit d'alimentation en carburant pour carburant a point d'ebullition bas WO2007049781A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2005-314685 2005-10-28
JP2005314685A JP2007120423A (ja) 2005-10-28 2005-10-28 低沸点燃料用の燃料供給装置

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Publication Number Publication Date
WO2007049781A1 true WO2007049781A1 (fr) 2007-05-03

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008298042A (ja) * 2007-06-04 2008-12-11 Isuzu Motors Ltd 燃料供給装置
EP2098706A2 (fr) * 2008-03-07 2009-09-09 Alois Dotzer Moteur diesel à combustion interne
JP2010144697A (ja) * 2008-12-22 2010-07-01 Ud Trucks Corp 液化天然ガス車両の燃料系システム

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007031779A1 (de) * 2007-07-07 2009-01-08 Deutz Ag Rapsölmotor
JP4914863B2 (ja) * 2008-03-28 2012-04-11 東海ゴム工業株式会社 振動部品の防振マウント
CN103133161A (zh) * 2013-03-15 2013-06-05 周继光 发动机醚类燃料供给控制系统

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JPH06173834A (ja) * 1992-12-03 1994-06-21 Fuji Heavy Ind Ltd 高圧噴射式エンジンの燃料圧力制御方法
JPH07127542A (ja) * 1993-10-30 1995-05-16 Suzuki Motor Corp 燃料供給装置
JPH1054319A (ja) * 1996-08-09 1998-02-24 Denso Corp エンジン用蓄圧式燃料供給装置
JPH1136990A (ja) * 1997-07-18 1999-02-09 Nippon Soken Inc エンジンの燃料供給装置
JP2001349256A (ja) * 2000-06-06 2001-12-21 Nippon Soken Inc 内燃機関の燃料供給システム
JP2002195121A (ja) * 2000-12-26 2002-07-10 Nippon Sharyo Seizo Kaisha Ltd 燃料系統自動切替装置
JP2005098260A (ja) * 2003-09-26 2005-04-14 Isuzu Motors Ltd 燃料供給装置

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06173834A (ja) * 1992-12-03 1994-06-21 Fuji Heavy Ind Ltd 高圧噴射式エンジンの燃料圧力制御方法
JPH07127542A (ja) * 1993-10-30 1995-05-16 Suzuki Motor Corp 燃料供給装置
JPH1054319A (ja) * 1996-08-09 1998-02-24 Denso Corp エンジン用蓄圧式燃料供給装置
JPH1136990A (ja) * 1997-07-18 1999-02-09 Nippon Soken Inc エンジンの燃料供給装置
JP2001349256A (ja) * 2000-06-06 2001-12-21 Nippon Soken Inc 内燃機関の燃料供給システム
JP2002195121A (ja) * 2000-12-26 2002-07-10 Nippon Sharyo Seizo Kaisha Ltd 燃料系統自動切替装置
JP2005098260A (ja) * 2003-09-26 2005-04-14 Isuzu Motors Ltd 燃料供給装置

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008298042A (ja) * 2007-06-04 2008-12-11 Isuzu Motors Ltd 燃料供給装置
EP2098706A2 (fr) * 2008-03-07 2009-09-09 Alois Dotzer Moteur diesel à combustion interne
EP2098706A3 (fr) * 2008-03-07 2011-11-30 Alois Dotzer Moteur diesel à combustion interne
JP2010144697A (ja) * 2008-12-22 2010-07-01 Ud Trucks Corp 液化天然ガス車両の燃料系システム

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