CN102076938B - Gaseous fuel injection system for engines - Google Patents
Gaseous fuel injection system for engines Download PDFInfo
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- CN102076938B CN102076938B CN200980125438.XA CN200980125438A CN102076938B CN 102076938 B CN102076938 B CN 102076938B CN 200980125438 A CN200980125438 A CN 200980125438A CN 102076938 B CN102076938 B CN 102076938B
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- Prior art keywords
- fuel
- gaseous
- gaseous fuel
- discharge pressure
- pressure
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Classifications
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- 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
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- 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
- F02D19/023—Control of components of the fuel supply system to adjust the fuel mass or volume flow
- F02D19/024—Control of components of the fuel supply system to adjust the fuel mass or volume flow by controlling fuel injectors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/0025—Controlling engines characterised by use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
- F02D41/0027—Controlling engines characterised by use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures the fuel being gaseous
-
- 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
-
- 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
- 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
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D2200/00—Input parameters for engine control
- F02D2200/02—Input parameters for engine control the parameters being related to the engine
- F02D2200/06—Fuel or fuel supply system parameters
- F02D2200/0602—Fuel pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/30—Controlling fuel injection
- F02D41/38—Controlling fuel injection of the high pressure type
- F02D41/3809—Common rail control 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
- F02M21/06—Apparatus for de-liquefying, e.g. by heating
-
- 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
Landscapes
- 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)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Abstract
A gaseous fuel direct injection system (10) which comprises a primary fuel tank (13) for receiving a gaseous fuel such as LPG, and a secondary fuel tank for receiving a reserve fuel supply. The gaseous fuel is delivered to a fuel injector (23) connected to a fuel rail (15). Operation of the fuel injector (23) is controlled by an electronic control unit (ECU). As the gaseous fuel available in the primary fuel tank (13) depletes, the vapour pressure in the fuel rail (15) diminishes. The ECU is able to compensate for the reduced vapour pressure in the fuel rail (15) by increasing the duration of opening of the fuel injectors (23) as necessary in order to maintain delivery of a necessary mass of gaseous fuel by the fuel injector (23). However, at some stage the ECU can no longer compensate for the reduced fuel pressure, at which time it becomes necessary to switch the fuel supply from the primary tank (13) to the secondary fuel tank. The decaying pressure characteristic of the depleting gaseous fuel in the primary fuel tank (13) is utilised to recognise that stage and initiate the switch of the fuel supply to the secondary tank.
Description
Technical field
The present invention relates to spray for the gaseous fuel of internal-combustion engine.
Term " gaseous fuel " refers to for example compressed natural gas of compressed fuel gas (CNG) and hydrogen (H as used herein
2), and for example liquefied petroleum gas (LPG) of liquid gas fuel (LPG) and LNG Liquefied natural gas (LNG).
Term " directly sprays " and refers to that the conveying of fuel directly enters the firing chamber of internal-combustion engine, conventionally will be by means of fuel injector.
Background technique
The discussion intention of following background technique is only for helping to understand the present invention.This discussion not confirms or admits that the material of any institute reference is the knowledge before the application's priority date.
Gaseous fuel is known has certain (certain) advantage that is better than liquid fuel (for example gasoline and diesel oil) for internal-combustion engine, particularly relate to cost and exhaust emissions.Because these advantages, so in motor, use this fuel to have the trend of growth.
An example of this use relates to the direct gas jet engine fuel of two-stroke for vehicle.Conventionally, vehicle is equipped with for the main fuel tank of gaseous fuel and reserve tank, is arranged as fuel in the time that main fuel tank is exhausted into almost emptying state and supplies with and can switch to reserve tank from main fuel tank.But, need to detect when in main fuel tank, no longer include suitable available gas fuel to continue to move well motor by occurring.Although this can, by using fuel level (level) sensor in fuel tank to realize, apply its not necessarily cost solution to one's profit for some.
The present invention develops for this background, problem and the difficulty that is associated just.
Summary of the invention
According to a first aspect of the invention, the method of a kind of control for the gaseous fuel injection system of motor is provided, the method comprises: monitoring is from the supply pressure of the gaseous fuel of fuel source (source), monitor the discharge pressure of the gaseous fuel of fuel injector, move fuel injector with any the reducing in compensation discharge pressure by the function of discharge pressure, and whether the variation detecting in supply pressure or in discharge pressure reduces with the speed that is greater than assigned rate (prescribed rate).
Due to this layout, the amount of the gaseous fuel of conveying is the function of the endurance of the operation of fuel injector.
Preferably, the operation of fuel injector is controlled by for example electronic control unit of control member (ECU).Particularly, ECU determines the parameter of fuel injector operation institute foundation.This Operational Limits can, for example, comprise the endurance of the unlatching of fuel injector, fuel injector starts the time of opening corresponding to motor operation circulation, the time that fuel injector starts to cut out corresponding to motor operation circulation, or their any combination.
Preferably, supply pressure and the discharge pressure of ECU gas-monitoring fuel.
Preferably, ECU reference " Cha Tu or table (" look-up " map or table) " is to determine the Operational Limits of required fuel injector.
Preferably, identify at ECU the variation of supplying with in pressure or discharge pressure and relate to and being greater than the reducing of assigned rate, stop the conveying of gaseous fuel to fuel injector.
Conventionally, ECU can supply with to laying in fuel by switching engine.It can be that gaseous fuel is supplied with or the fuel of another form comprises liquid fuel (for example gasoline or diesel fuel) that this deposit fuel is supplied with.
Preferably, identify at ECU the variation of supplying with in pressure or discharge pressure and relate to the speed that is greater than appointment reduces, send instruction fuel source and will use up the signal of gaseous fuel.
The signal that should send by ECU can be initiated (initiate) and be switched to the supply of deposit fuel.
In fact, variation when this ECU is identified in motor operation in roadability, and the response of initiation action conduct to it, this can relate to supplies with fuel to switch to the supply of deposit fuel.
Therefore the Pressure characteristics that, the present invention manages the decay that is used in the gas fuel source (it typically is just at emptying gas container) exhausting when motor moves is to identify this event and to initiate action subsequently.This action subsequently can adopt any suitable form, for example transmission instruction gas fuel source has been exhausted into the signal of predetermined extent and/or motor operation has been switched to deposit fuel and supplied with, and avoids thus because excessive low gas pressure causes bad engine performance.
According to a second aspect of the invention, a kind of gaseous fuel injection system for motor is provided, this fuel injection system comprises: for monitoring the member from the supply pressure of the gaseous fuel of fuel source,, and reduce with compensation discharge pressure any and detect the member that reduces (reduction) that supply pressure or discharge pressure medium-rate are greater than the speed of appointment for move fuel injector by the function of discharge pressure to the member of the discharge pressure of fuel injector for gas-monitoring fuel.
According to a third aspect of the invention we, a kind of motor with fuel injection system is provided, comprise: the first fuel for gaseous fuel is supplied with, the second fuel is supplied with, be used for the member of the supply pressure of monitoring the gaseous fuel of supplying with from the first fuel, member for gas-monitoring fuel to the discharge pressure of fuel injector, reduce with compensation discharge pressure any and detect the member reducing that supply pressure or discharge pressure medium-rate are greater than the speed of appointment for move fuel injector by the function of discharge pressure, with for motor being supplied with and is switched to the member that the second fuel is supplied with from the first fuel when detecting when supplying with pressure or discharge pressure medium-rate is greater than the reducing of speed of appointment.
According to a forth aspect of the invention, provide a kind of vehicle with motor according to a third aspect of the invention we.
Brief description of the drawings
Following description by reference to a specific embodiment of the present invention will be understood the present invention better, as shown in the drawing, and wherein:
Fig. 1 is the summary view according to this embodiment's gaseous direct fuel injection system; With
Fig. 2 illustrates according to the emptying situation of fuel tank in this embodiment's fuel system.
Embodiment
Embodiment shown in the drawings is the gaseous direct fuel injection system 10 for the internal-combustion engine (not shown) for vehicle.This layout is suitable for from for example vehicle scope to heavy truck at the automatic rickshaw (auto-rickshaw) of India's common type of less vehicle.
This gaseous direct fuel injection system 10 comprises the gas container that main fuel tank 13 is provided, for holding such as LPG of gaseous fuel.This fuel system 10 also comprises secondary fuel tank (not shown), being used for holding deposit fuel supplies with, deposit fuel is supplied with and can be comprised gaseous fuel or traditional liquid fuel (for example gasoline or diesel oil move residing fuel cycle according to motor).
If this gaseous fuel comprises liquid gas fuel, for example liquefied petroleum gas (LPG) (LPG) or LNG Liquefied natural gas (LNG), it is stored in fuel tank 13 with liquefaction.
This gaseous fuel is delivered to fuel rail (fuel rail) 15 along fuel channel 17.Pressure regulator 19 is combined in fuel feed pipe road 17, to regulate the supply pressure of gaseous fuel of feed fuels rail 15.Heat exchanger 21 is also combined in fuel feed pipe road 17, for making liquid gas fuel vaporization, makes gaseous fuel be delivered to fuel rail 15 with gaseous state.In the layout of signal, regulator 19 and heat exchanger 21 are configured to the unit of one.Fuel feed pipe road is also combined with filter 25 and electromagnetism locking valve (solenoid lock-off valve) 27.
In this embodiment, motor is multi cylinder (multi-cylinder) motor, and gaseous fuel directly sprays in the determined firing chamber of each cylinder by being connected to the fuel injector 23 of fuel rail 15.
The operation of fuel injector 23 is by the control of electronic control unit (not shown).This electronic control unit (ECU) can be controlled the endurance of the unlatching of Operational Limits, the especially sparger of each fuel injector 23, and the time point of sparger opening and closing in cycle of engine.
This ECU receives input signal from providing about the various sensors of the operation conditions of motor and the information of driver command.This ECU exports various control signals, comprises the control signal about the operation of fuel injector 23.
Along with gaseous fuel available in main fuel tank 13 exhausts (deplete), the vapor tension in fuel rail 15 reduces.This ECU is by the amount of the gaseous fuel that relies on the variation control of Operational Limits of fuel injector and carried by fuel injector 23, the vapor tension reducing in can compensate for fuel rail 15.By controlling endurance of unlatching of fuel injector, corresponding to cylinder, circulation starts the time of opening to fuel injector, fuel injector circulates the time that starts to cut out corresponding to cylinder, or their any combination, and this ECU changes the Operational Limits of each fuel injector 23.Particularly, ECU increases the endurance of the unlatching of fuel injector 23 as required, enters firing chamber to maintain by the gaseous fuel of the main necessary quality of the required conveying of (prevailing) motor operation conditions (mass).
No longer can compensate at this ECU of certain stage the fuel pressure reducing, at this moment be necessary fuel to supply with and switch to secondary fuel tank (not shown) from holding the main fuel tank 13 of gaseous fuel.This is necessary, continues operation motor because be not desirably in to lack in enough fuel situation about can use, otherwise will cause that engine power declines, air fuel ratio is thin and manoeuvring performance is poor.But, also expect to optimize available gaseous fuel in use main fuel tank 13.Therefore, need detection when to be about to occur no longer include enough available gas fuel to continue moving well motor in main fuel tank 13, and only switch at that time the supply of deposit fuel.For this reason, monitor continuously the gaseous fuel vapor tension in gaseous fuel vapor tension and the fuel rail 15 in main fuel tank 13, any reducing on the shorter time period just indicated the deficiency that is about to occur available fuel.
For this purpose, for provide the sensor of information to comprise to ECU: first sensor 31, for responding to the vapor tension of the gaseous fuel that fuel tank 13 holds; With the second sensor 32, for responding to the vapor tension of the gaseous fuel in fuel rail 15.First sensor 31 is also responded to the temperature of the gaseous fuel holding in fuel tank 13, and the second sensor 32 is also responded to the temperature of the gaseous fuel in fuel rail 15.Temperature sense ability is that certain (certain) gaseous fuel provides additional benefit, and this will explain in the back.
To given engine speed and engine loading, the collected data about the gaseous fuel vapor tension in gaseous fuel vapor tension and fuel rail 15 in main fuel tank 13 are stored in ECU storage temporarily.Conventionally, this carries out in each cycle of engine, but other timing arrangement is possible.New pressure data is compared, although normally on continuous basis execution per second repeatedly, other timing arrangement is possible.If the variation of the gaseous fuel vapor tension in the gaseous fuel vapor tension in main fuel tank 13 and/or fuel rail 15 reduces faster than demarcating speed, main fuel tank 13 is regarded as emptying.
To understand better this monitoring policy with reference to figure 2, Fig. 2 is the figure that represents the emptying situation of fuel tank, its demonstration: the gaseous fuel vapor tension (with TANK instruction) in (1) main fuel tank 13; (2) the gaseous fuel vapor tension in fuel rail 15 (with RAIL instruction); (3) endurance of the unlatching of each fuel injector 23 (with FPW instruction, fuel pulse width); (4) air fuel ratio (with AFR instruction).With reference to figure 2, the stage of indicating with A represents that the gaseous fuel vapor tension in main fuel tank 13 starts the moment that (commence) reduces, and because the gaseous fuel vapor tension in the characteristic fuel rail 15 of pressure regulator 19 also starts to reduce.In this stage, the endurance of the unlatching of fuel injector 23 starts to increase, carry the gaseous fuel of necessary quality to enter firing chamber to maintain, compensate thus the fuel supply (fuelling) that the gaseous fuel vapor tension because reducing in fuel rail 15 loses.Stage with B instruction represents that the endurance of the unlatching of fuel injector 23 reaches the moment of maximum limit of compensation.After carving at this moment, more compensation of this fuel injector open period are effective to solving the fuel rail pressure right and wrong that reduce, and for the gaseous fuel of the required quality of motor operation circulation can not be transported into firing chamber, result is that AFR increases to unacceptable degree and thin out (lean).Stage with C instruction represents the combustion stablized limit, good in these stage power management performance right and wrong.Represent that with the stage of D instruction motor will stop working moment of (stall) owing to lacking fuel.
According to the monitoring of carrying out by ECU, the slope (slope) of the TANK before ECU identification arrival stage B and RAIL plotted line (plot line) and initiation (initiate) switch to deposit fuel and supply with.
In other words, variation when this ECU is identified in motor operation in roadability, and initiate action as the response to it, this relates in this embodiment supplies with fuel to switch to secondary fuel tank from main fuel tank 13.
The signal (for example visible signal and/or audio signal) of any appropriate format is initiated in the operation that this ECU also can be motor, and instruction fuel is supplied with and switched to secondary fuel tank from main fuel tank 13.
As mentioned above, the temperature sense of carrying out by first sensor 31 and the second sensor 32 provides additional benefit for some gaseous fuel, because the fuel supply that it has been considered the composition of this fuel to be assessed and compensated for contingent notable change together with pressure sensitive.This is favourable, because the composition of some gaseous fuel mixture can change according to source and the season in 1 year.Variation in the composition of gaseous fuel can affect quality of fuel flow rate (mass flow rate), calorific value (calorific value) and stoichiometric ratio (stoichiometric ratio).This then can affect the performance of motor, especially, relate to emission level, moment of torsion, combustion stability and operating characteristics for vehicle in the situation that at motor.For instance, the modification of available LPG comprises: be mainly propane mixture, be mainly the mixture of butane and the more general mixture that comprises propane and butane.Similarly, the composition of rock gas (it is mainly methane) can change, and the composition (normally hydrogen and rock gas) of mixed fuel also can change.ECU is with reference to " Cha Tu or table " (" look-up " map or table), with according to being stored in the temperature of the gaseous fuel in fuel tank 13 and vapor tension to determine the composition of gaseous fuel.
According to aforementioned, obviously, the invention provides a kind of simple but very effective method, it defines the necessary stage that switches to secondary fuel tank from holding the main fuel tank of gaseous fuel that fuel is supplied with.Variation when this ECU is identified in motor operation in roadability, and initiate action as the response to it, fuel is supplied with and switched to secondary fuel tank from holding the main fuel tank of gaseous fuel.Particularly, utilizing (decaying) Pressure characteristics of the decay that exhausts the gaseous fuel of (depleting) in main fuel tank 13 to identify ECU no longer can compensate the gas fuel pressure reducing and be necessary fuel is supplied with to the stage that switches to secondary fuel tank.
Will be appreciated that scope of the present invention is not limited to described embodiment's scope.
For instance, the invention is not restricted to direct ejecting system.The present invention can be applicable to rely on the system of port injection or stifling (fumigation) (whether fuel is measured by sparger or for example servoid metering valve of other metering equipment).
The present invention can be applicable to be used for the gas fuel delivery system in heavy road diesel engine and associated vehicle.In addition,, although the present embodiment is about using the layout of a fuel injector to be described to each cylinder, the invention is not restricted to this.For example, the present invention can be applicable to the quantity of sparger and the unequal layout of the quantity of cylinder.
In addition, the present invention can be not limited to spray the layout that operation is synchronizeed with the timing of engine.
The present invention can be applicable to operate in the motor under two-stroke or four stroke cycle.
In addition, the present invention can be applicable to ignition by compression and spark ignition engine.
In addition, the present invention can be used for relating to the fuel injection system of two-fluid (two-fluid), and wherein fuel is delivered to firing chamber in the mode of for example air of gas of compression.
Specification and and claim in the whole text in, unless context requirement, otherwise word " comprises (comprise) " and modified example as " comprising (comprises) " or " comprising (comprising) ", mean comprising of the complete thing (integer) to statement or the set (group) of complete thing by being interpreted as, but not to any other complete thing or the eliminating of the set of complete thing.
Claims (20)
1. control is for a method for the gaseous fuel injection system of motor, and the method comprises: monitoring is from the supply pressure of the gaseous fuel of fuel source; Monitoring is delivered to the discharge pressure of the gaseous fuel of fuel injector; Moving fuel injector by the function of described discharge pressure reduces to compensate any of described discharge pressure; Whether reduce with the speed that is greater than assigned rate with the variation that detects described supply pressure or described discharge pressure.
2. method according to claim 1, wherein, the operation of fuel injector is by control member control, and, described supply pressure and the described discharge pressure of this control member gas-monitoring fuel.
3. method according to claim 2, wherein, control member is determined the Operational Limits of required fuel injector with reference to " Cha Tu or table ".
4. according to the method in claim 2 or 3, wherein, the speed that the variation that identifies described supply pressure or described discharge pressure relates to being greater than assigned rate reduces, stop the conveying of gaseous fuel to fuel injector at control member.
5. method according to claim 4, wherein, in the time that described situation occurs, motor is switched to the supply of deposit fuel by control member.
6. for a gaseous fuel injection system for motor, this fuel injection system comprises: for monitoring the member from the supply pressure of the gaseous fuel of fuel source, the member for gas-monitoring fuel to the discharge pressure of fuel injector; With anyly reduce and detect the member that described supply pressure or discharge pressure reduce to be greater than the speed of assigned rate with what compensate described discharge pressure for move fuel injector by the function of described discharge pressure.
7. gaseous fuel injection system according to claim 6, wherein, the described supply pressure of a kind of control member for gas-monitoring fuel and the described discharge pressure of gaseous fuel are provided, and, this control member is exercisable to control the operation of fuel injector by the function of described discharge pressure, reduces to compensate any of discharge pressure.
8. gaseous fuel injection system according to claim 7, wherein, this control member is suitable for monitoring supplies with the variation of pressure or discharge pressure, and in the time that pressure reduces to be greater than the speed of assigned rate, initiates action.
9. according to the gaseous fuel injection system described in claim 6,7 or 8, wherein, also comprise gas container for holding gaseous fuel and for responding to the first sensor of vapor tension of gas container gaseous fuel, this gas container provides the fuel source of gaseous fuel.
10. gaseous fuel injection system according to claim 9, wherein, first sensor is also responded to the temperature of the gaseous fuel holding in gas container.
11. gaseous fuel injection systems according to claim 9, wherein, also comprise the second sensor of the vapor tension for responding to the gaseous fuel that is delivered to fuel injector.
12. gaseous fuel injection systems according to claim 11, wherein, the second sensor is also responded to the temperature of the gaseous fuel that is delivered to fuel injector.
13. gaseous fuel injection systems according to claim 11, wherein, fuel injector is connected to fuel rail, and wherein, the vapor tension of the gaseous fuel in this second sensor sensing fuel rail.
14. gaseous fuel injection systems according to claim 12, wherein, fuel injector is connected to fuel rail, and wherein, the vapor tension of the gaseous fuel in this second sensor sensing fuel rail.
15. gaseous fuel injection systems according to claim 9, wherein, this gas container provides main fuel tank, is provided with in addition the secondary fuel tank of supplying with for holding deposit fuel.
16. gaseous fuel injection systems according to claim 15, also comprise the member that switches to secondary fuel tank and operate in response to the action of control member initiation from main fuel tank for the fuel to fuel injector is supplied with.
17. 1 kinds of motors, have according to the gaseous fuel injection system described in any one in claim 6 to 16.
18. 1 kinds of motors, have fuel injection system, and this fuel injection system comprises: the first fuel for gaseous fuelled is supplied with; The second fuel is supplied with; Be used for the member of the supply pressure of monitoring the gaseous fuel of supplying with from the first fuel; Member for from gas-monitoring fuel to the discharge pressure of fuel injector; Anyly reduce and detect the member that described supply pressure or discharge pressure reduce to be greater than the speed of assigned rate with what compensate described discharge pressure for move fuel injector by the function of described discharge pressure; With the member for motor is switched to the second fuel supply in the time detecting that described supply pressure or discharge pressure reduce to be greater than the speed of assigned rate from the first fuel supply.
19. 1 kinds have the vehicle of motor according to claim 17.
20. 1 kinds have the vehicle of motor according to claim 18.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2008903366 | 2008-06-30 | ||
| AU2008903366A AU2008903366A0 (en) | 2008-06-30 | Gaseous Fuel Injection System for Engines | |
| PCT/AU2009/000845 WO2010006356A1 (en) | 2008-06-30 | 2009-06-30 | Gaseous fuel injection system for engines |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102076938A CN102076938A (en) | 2011-05-25 |
| CN102076938B true CN102076938B (en) | 2014-11-26 |
Family
ID=41549914
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200980125438.XA Expired - Fee Related CN102076938B (en) | 2008-06-30 | 2009-06-30 | Gaseous fuel injection system for engines |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN102076938B (en) |
| AU (1) | AU2009270319B2 (en) |
| WO (1) | WO2010006356A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5401352B2 (en) * | 2010-02-05 | 2014-01-29 | 株式会社ケーヒン | Fuel switching control device and method |
| WO2012048310A1 (en) * | 2010-10-08 | 2012-04-12 | Pinnacle Engines, Inc. | Use of pressurized fuels in an internal combustion engine |
| ITBO20110292A1 (en) * | 2011-05-23 | 2012-11-24 | Magneti Marelli Spa | METHOD OF CHECKING FUEL INJECTION IN A POLI-FUEL INTERNAL COMBUSTION ENGINE IN CASE OF PRESSURE SWITCHES |
| US8919325B2 (en) | 2012-02-08 | 2014-12-30 | Ford Global Technologies, Llc | Method and system for engine control |
| US8903630B2 (en) * | 2012-02-08 | 2014-12-02 | Ford Global Technologies, Llc | Method and system for engine control |
| US8831857B2 (en) * | 2012-03-07 | 2014-09-09 | Ford Motor Company Of Australia Limited | Method and system for estimating fuel composition |
| US9115653B2 (en) * | 2012-03-27 | 2015-08-25 | Ford Global Technologies, Llc | System and method for emptying a tank |
| US9422900B2 (en) | 2012-03-27 | 2016-08-23 | Ford Global Technologies, Llc | System and method for closing a tank valve |
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- 2009-06-30 CN CN200980125438.XA patent/CN102076938B/en not_active Expired - Fee Related
- 2009-06-30 AU AU2009270319A patent/AU2009270319B2/en not_active Ceased
- 2009-06-30 WO PCT/AU2009/000845 patent/WO2010006356A1/en active Application Filing
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| WO1992008888A1 (en) * | 1990-11-20 | 1992-05-29 | Biocom Pty. Ltd. | A dual fuel injection system and a method of controlling such a system |
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| US6467466B1 (en) * | 1999-07-30 | 2002-10-22 | Fujitsu Ten Limited | Gas leakage detection and fail-safe control method for gas-fueled internal combustion engine and apparatus for implementing the same |
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Also Published As
| Publication number | Publication date |
|---|---|
| AU2009270319A1 (en) | 2010-01-21 |
| CN102076938A (en) | 2011-05-25 |
| AU2009270319B2 (en) | 2013-05-23 |
| WO2010006356A1 (en) | 2010-01-21 |
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