CN104471226A - Method for controlling a defective injector - Google Patents
Method for controlling a defective injector Download PDFInfo
- Publication number
- CN104471226A CN104471226A CN201280074607.3A CN201280074607A CN104471226A CN 104471226 A CN104471226 A CN 104471226A CN 201280074607 A CN201280074607 A CN 201280074607A CN 104471226 A CN104471226 A CN 104471226A
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- CN
- China
- Prior art keywords
- flow
- fuel
- spray
- fluid
- fuse
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
- F02D41/22—Safety or indicating devices for abnormal conditions
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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
- F02D41/30—Controlling fuel injection
- F02D41/38—Controlling fuel injection of the high pressure type
- F02D41/3809—Common rail control systems
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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
- F02D41/22—Safety or indicating devices for abnormal conditions
- F02D2041/224—Diagnosis of the fuel system
-
- 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
- F02D41/22—Safety or indicating devices for abnormal conditions
- F02D2041/224—Diagnosis of the fuel system
- F02D2041/225—Leakage detection
Abstract
There is described a control method, in particular for use with an engine, for shutting down a fluid ejection valve having a leakage malfunction. The valve is connected in series after a flow fuse adapted to fall into a shut-down-state when a fluid flow through said flow fuse exceeds a predetermined flow value. A step of detecting the leakage malfunction of the valve is followed by a step of controlling the valve for ejecting a fluid flow exceeding the predetermined flow value to thereby trigger the flow fuse to cut off the valve from fluid supply. The predetermined flow value may be a value representing characteristic of the flow including cumulated fluid amounts measured by volume or mass. When the valve is a fuel injector of an internal combustion engine, the detection step evaluates at least one operating state parameter of the engine.
Description
Specification
The present invention relates to a kind of controlling method for fluid injection valve.Such as, fluid injection valve is generally used for internal-combustion engine, and wherein these valves are used for burner oil, lubricant, water or can are other fluids of liquid or gas.
Term injection valve should comprise all types of valves being suitable for controlling Fluid injection or sputtering injection valve.The fluid sprayed can be gas or liquid, and fuel, such as oily such lubricant, aqueous emulsion or solution or water in particular.Be used under fuel or other liquid or particular case that even gas is ejected in the cylinder of internal-combustion engine at sparger (ejector) valve, sparger is called nozzle (injector).
Injection valve involved by control of the present invention is connected to the valve as underground pipelines, and fluid to be sprayed in this pipeline exists with pressurized state.The typical case of this situation is the fuel burner of the motor with common rail system.Certainly, injector valve can be following injector valve, this injector valve for lubricant is splashed to slidingsurface, or in cylinder that additive (as containing the urea of solution) or water are splashed to engine environment and/or pipeline (air inlet and/or gas exhaust piping).
In view of the danger of the fluid under high pressure, when fluid especially is under high pressure dangerous to environment, flow fuse is built in pipeline or pipeline, and each injection valve is connected to the source of pressure fluid by this flow fuse.Flow fuse is designed to, and when exceeding the fluid flows amount protecting device of flow value of design flow value, triggers flow fuse, and cuts off the fluid being fed to each injection valve.When pipe breakage, actual mass flow and/or flow velocity can form the standard triggering flow fuse.But not only actual mass flow or flow velocity can be the parameters limiting this decisive flow value; And the further feature of fluid flow (such as, the pressure loss, temperature change etc.) can be used as the parameter representing flow value.Flow fuse is also known as excess-flow valve.
And, flow fuse can such as be designed to flow fuse and have fluid reservoir, flow fuse is made to allow peak value emitted dose to reach finite time section (being thereafter the closedown period of injection valve), make, when exceeding mean flowrate or absolute flow rate (it can calculate for the closedown period comprising period that peak value sprays and recharge for reservoir), to trigger flow fuse.This flow fuse can keep the fault opened completely suitably to make a response to injection valve.
Certainly, flow fuse must be designed so that flow fuse always allows the maximum spout amount of jet/mean flowrate will ejected from each injector valve under the serviceability of any permission of the machine using injection valve.Therefore, for safety, the tolerance triggering protecting device should set for permission injection valve injection fluid.
Because flow fuse is the mechanical system operated in inconvenient environment, so the required robustness (strong spring solid portion, large discharge, high pressure) of these structures reduces the sensitivity of flow fuse for trigger parameter usually, this makes it must allow even larger tolerance, to avoid triggering unintentionally.
In view of foregoing, there is following possibility, that is, flow fuse does not detect the Small leak (it may enduringly or intermittent to occur) from injection valve, namely can not trigger flow fuse.
For the Small leak of above-mentioned meaning, there is following possibility, namely the pipeline with other cut-off valve is provided, to interrupt or to be cut to the fluid supply of injection valve, if wherein there is Small leak, manually can operate or close described other cut-off valve by electric drive.But, provide other cut-off valve to be expensive, and owing to being integrated in pipeline by cut-off valve, cause the number of the hermetic unit in pipeline to increase.
Therefore, the present invention seeks to, proposing a kind of method for closing the fluid injection valve with leakage failure.
This object uses method according to claim 1 to realize; Describe favourable amendment in the dependent claims.
According to the present invention, controlling method for closing the fluid injection valve with leakage failure is used in following layout, in this arrangement, after valve is connected on flow fuse, described flow fuse is set to enter closed condition when the fluid flow by described flow fuse exceedes predetermined amount of flow value.Said method comprising the steps of: the leakage failure detecting described valve; And control described valve and spray and exceed the fluid flow of described predetermined amount of flow value, thus trigger described flow fuse to enter described closed condition, and cut off the fluid supply of described valve.
Term flow value is understood to express the value of one or more parameter relating to fluid flow.By arranging predetermined amount of flow value (threshold value), this predetermined amount of flow value can be set to be expressed as follows every value: flow velocity, volume flow rate, mass flowrate, the total fluid volume in scheduled time slot, the total fluid mass in scheduled time slot or the cumulative flow scale of construction gone out by volume or mass measurement, or it can relate to the combination of these parameters.
As illustrated above, method of the present invention uses the detecting step detecting leakage failure, and the step that this detecting step triggers flow value with detection by flow fuse is separated.
Preferably, when fluid injection valve, when being suitable for that spray is to fuel burner in the cylinder of internal-combustion engine under stress by fuel, can detect the leakage failure of nozzle based on the exception of at least one serviceability parameter of motor.Preferably, serviceability parameter be every as follows at least one: exhaust gas temperature, cylinder pressure, fuel consumption, speed of crankshaft and crank torque.In addition, can monitor and assess the combination of these parameters, for detecting leakage failure.
Preferably, in order to trigger flow fuse, when operating parameter is monitored by control unit of engine (ECU), and when control unit of engine causes nozzle spray during engine strokes to exceed the fuel of the amount of fuel-laden spray amount, described fuel-laden spray amount with when motor is with corresponding by the spray fuel quantity of nozzle spray in engine strokes during capacity operation.Therefore, in this case, when motor runs with maximum load, spray fuel quantity be set so that spray fuel quantity than will spray high to the fuel quantity in cylinder.In this way, exceed the design trigger value of flow fuse, and trigger protecting device.
Preferably, spray fuel quantity is at least 101% of fuel-laden spray amount, preferably at least 120%, and most preferably in the scope comprising 130% to 170%.Preferably, spray fuel quantity is set so that related streams value (one or more parameter based on flow) is greater than predetermined amount of flow value.
As mentioned above, the various types of machines except internal-combustion engine can also be applied to according to controlling method of the present invention, or it can be applied to the various types of fluid ejection apparatus except propellant spray in the machine of internal-combustion engine and other type.
Preferably, fluid injection valve is following sparger, the contact surface that this sparger is used in internal combustion engine sprays lubricant, spray lubricant to piston/cylinder contact surface (cylinder internal layer) especially, and detect leakage failure based on the exception of at least one serviceability parameter of motor.
Preferably, serviceability parameter be every as follows at least one: lubricant supply pressure, lubricant consumption, exhaust gas temperature and cylinder pressure.
In addition, preferably and similarly, fluid injection valve can be following sparger, this sparger is used for water or other aqueous solution (urea as containing solution) to be ejected in cylinder, air inlet pipeline or gas exhaust piping, wherein can detect leakage failure based on the serviceability parameter (such as, waste gas component, temperature etc.) of motor or regarding system.Preferably, fluid injection valve is to the valve in the cylinder of motor by water jet.This water ejector has the danger forming incrustation scale, if make water ejector stay open, may need to turn off.
Preferably, when motor is provided with fuel flow rate protecting device and fluid injection valve is fuel burner, and motor be also provided with lubricant flow fuse and fluid injection valve is lubricant sparger time, the leakage failure of test fluid injection valve comprise according to Fluid injection valve-type to the differentiation with abnormal operating parameter.Preferably, the operating parameter for this differentiation comprises fuel consumption and lubricant pressure.
Preferably, when flow fuse is arranged in the upstream of multiple fluid injection valve, described multiple fluid injection valve operates simultaneously, to spray the fluid flow exceeding the predetermined amount of flow value of flow fuse, thus triggering flow fuse enters closed condition, and cut off the liquid supply of described multiple liquid injection valve.
In advantageous applications of the present invention as above, this motor is direct fuel-injection engine, and the fuel system of motor comprises wherein with the common rail of pressurized state storage of fuels, and flow fuse is arranged in the fuel conduit between common rail and a fuel burner or multiple fuel burner.This motor can comprise multiple cylinder, and for the described nozzle of each cylinder or described multiple nozzle, in each fuel supply conduit, arranges flow fuse.
In a preferred form, this controlling method also comprises: when fault being detected, the step of display optical alarm and/or acoustics alarm; And/or when fault being detected, trigger the step that flow fuse enters closed condition.Preferably, this controlling method is performed when not stopping motor.
Further preferably, this controlling method can be applied to following hydraulic system, in this hydraulic system, in piston/cylinder arrangements (such as, in following pressure amplifier, this pressure amplifier for amplifying propellant spray pressure so that from fuel burner spray) use hydraulic oil.In this case, can before pressure amplifier use traffic protecting device, and to exceed the fuel flow rate of predetermined amount of flow value with spray by controlling fuel burner, and cause the flow of the hydraulic oil of the flow fuse triggering oil hydraulic circuit.
Preferably, such as, even if nozzle or sparger have problem, the application in of the present invention, engine of boat and ship also allows motor continuous running.When nozzle leaks lastingly, fuel in cylinder, is caused fuel enrichment by spray enduringly, and this may cause blasting in waste gas, exhaust-gas turbocharger, or the major defect of motor.On the other hand, stop and restarting this big-block engine and be trouble and consuming time.Especially, if boats and ships just navigate by water under severe weather conditions, so to stop and time of restarting motor not, maybe may may jeopardize the safe navigation of boats and ships.In this case, motor uses the cylinder reducing quantity to carry out continuous running is safe selection.This is a useful aspect of the present invention, and obtains further advantage by it, as from becoming clearly in the description of application example of the present invention below.
Fig. 1 illustrates the schematic diagram of the propellant spray system for 6 cylinder engines, its flow fuse having common rail and associate with each independent nozzle.
Fig. 1 shows the layout of the fuel system of two-cycle engine 10, and it has common rail 1, and fuel is stored in common rail 1 at an elevated pressure.In FIG, the connection of common rail 1 to the nozzle 31,32 of a cylinder 5 of motor 10 is only shown in detail, and common rail 1 is indicated to the other connection of other cylinder by #2, #3, #4, #5 and #6, and should have identical structure.By means of petrolift 7, fuel is fed into common rail 1, and petrolift 7 can be driven by motor 10.Fuel storage is in storage tank T.Safety check 71 prevents fuel to be back to pump 7 from common rail 1.The pressure control device comprising pressure-relief valve 8 is designed to and control unit of engine ECU 100 concurrent operation, the fuel pressure in common rail 1 to be maintained in the level of requirement.ECU 100 control pump 7 and/or pressure controlled valve 8, under high pressure to supply enough fuel, but prevent the excessive pressurization of fuel, to save energy.Alternatively, mechanical pressure-relief valve can be used to replace active pressure control valve 8, to carry out Stress control.Via the electric wire 103 for signal transmission and/or electric drive electric power, the control of pump 7 and pressure controlled valve 8 is connected to ECU 100.
Fuel burner 31,32 is connected to common rail 1 respectively by pipeline 21,22.In pipeline 21, be furnished with flow fuse 41, after this flow fuse 41 is triggered, flow fuse 41 is interrupted via the fuel supply of pipeline 21 to fuel burner 31.Fuel supply keeps interrupting, until flow fuse is by till manual replacement (such as, after solving nozzle problem).Similarly, in pipeline 22, be furnished with flow fuse 42, after this flow fuse 42 is triggered, flow fuse 42 is interrupted via the fuel supply of pipeline 22 to fuel burner 32.In addition here, fuel supply keeps interrupting, until flow fuse is by till manual replacement (such as, after solving nozzle problem).
Fig. 1 illustrates cylinder 5 and the piston 6 of motor 10 further with schematic diagram type.And, show the guide line 101,102 nozzle 31 and 32 being connected respectively to ECU 100.By the mode of these guide lines, ECU 100 controls nozzle and opens or close, so as with the amount required and in the timing required by propellant spray in cylinder 5.Carry out tuning to ECU 100 and nozzle 31,32, make ECU 100 opening signal can be sent to each nozzle 31,32, as long as and receive opening signal, each nozzle 31,32 just stays open.When opening signal is off, nozzle oneself close, make each nozzle 31,32 close and interrupts fuel spray in cylinder 5.
Flow fuse 41,42 is designed to be triggered when the flow value of the flow of the fuel by flow fuse exceedes predetermined amount of flow value.Predetermined amount of flow value can be the value with the parameter association of fluid flow.Such as, flow value can be through the pressure loss of flow fuse, is the dynamic pressure of the flow acted on the triggering surface of flow fuse, or or even in the difference by the static pressure in the stream of flow fuse and/or dynamic pressure.Certainly, other parameter of fluid flow can be selected to arrange flow value and associated threshold.
For illustrative purposes, hereinafter, the integrated flux by flow fuse in scheduled time slot as flow value, alternatively will be suitable for for illustrating of other flow value.
In the operation period of motor 10, suppose that in nozzle 31,32 has leakage failure.Leakage failure is that nozzle is not fully closed, i.e. the nozzle situation of not fastening.This may have a variety of causes, comprises the crackle etc. in the chip in fuel, the wearing and tearing of fastening surface, surface.In this case, when supposing that it is closed, fault nozzle 31,32 can enduringly by a small amount of propellant spray in cylinder 5, drive nozzle 31,32 spray fuel normally to work simultaneously, namely when nozzle 31,32 be controlled as open time, nozzle 31,32 spray require fuel quantity.
Because the predetermined amount of flow value for triggering flow fuse is the mean flow amount based on time per unit, so may exist by the too little situation being not enough to trigger flow fuse of the flow of fault nozzle.
ECU 100 is connected to each sensor (not shown), and the operating parameter of motor 10 and its peripheral unit (subtense angle) can be measured/detect to these sensors.Cause the change of monitored operating parameter from the spray enduringly of fault nozzle to the excessive fuel of cylinder 5, and can infer to there is fault in a nozzle 31,32 according to this change.
The parameter of monitor unit can comprise: exhaust gas temperature, cylinder pressure, fuel consumption, speed of crankshaft and crank torque.The power consumption of petrolift 8 or discharge flow rate (ON/OFF period) can also with other parameters combination be used as the indicator of leakage failure.
Once detect that cylinder has fault, ECU 100 just arranges guard sign, and this guard sign provides the alarm of acoustics and/or vision.In addition, alarm can send via the communication with responsible person, notifies the information about fault.Then, make decision to turn off at least one in nozzle 31,32.This decision can be found by people, or is automatically found by the program performed in ECU.If the fault nozzle in two nozzles 31,32 is turned off, then cylinder still can be operated with low performance by the single nozzle of normal running.Further, if two nozzles 31,32 are all turned off, then the individual cylinder 5 of motor 10 is turned off, but motor 10 keeps by the remaining cylinder (not shown) of operation running.
Nozzle 31,32 to be turned off when identifying, and the signal produced for turning off nozzle is (raw by the manual real estate of people, or automatically produced by control unit of engine ECU) time, ECU 100 exports to nozzle 31,32 and opens control signal, this signal preferably than when motor 10 normally and when operating with maximum load ECU 100 output to open control signal long significantly.Because this is from the long dozen ON signal of ECU 100, so many fuel is discharged in cylinder 5 by nozzle 31,32, makes the flow value of this fuel flow rate exceed the predetermined amount of flow value of flow fuse.Therefore, flow fuse 41,42 is triggered, and interrupts to the fuel supply about nozzle 31,32.Although make excess of fuel spray in cylinder, find that this excessive being injected in power operation in the single stroke of motor does not cause any problem.In this way, the lasting leakage of the danger flow in motor is stopped.Flow fuse can be designed as and makes flow fuse after the problem solving nozzle need manually to reset.Flow fuse can also be designed so that, when stress reduction at engine stop and after the maintenance needed in fuel conduit, flow fuse is automatically reset.
In FIG, describe the layout of motor, changed engine arrangement and each nozzle with its flow fuse of controlling oneself is set.It is feasible that two or more nozzles of a cylinder are connected to public flow fuse.In order to trigger this flow fuse, flow value should be set as that the flow value of the total fuel flow amount of all nozzles than the cylinder operated with the maximum load of motor is large.
If each nozzle is provided with its flow fuse of controlling oneself, so turn off process can be set as: to make in the stroke of piston an only nozzle be controlled the excessive fuel quantity of spray.In this way, the overload of the cylinder caused due to the burning of the extremely plentiful mixture in cylinder is avoided.
Hereinbefore, described and related to the example of propellant spray to the fuel burner in engine cylinder.When nozzle comes alternative by following injection valve, identical layout can be adopted: lubricant is injected in motor or is different from the injection valve on the slidingsurface in the machine of motor; Or the injection valve in water or additive or its mixture are ejected into motor or other application cylinder, induction part, discharge portion or other parts.In these adaptations, carry out alternative common rail by any pressure fluid accumulator, and certainly, design a flow fuse or multiple flow fuse for expection or permission peak rate of flow.Control operation for (one/multiple) injection valve is similar to above description, that is, spray excessive flow by control injection valve and cause flow fuse start (trip) or be triggered.
In the examples described above, flow fuse is illustrated and is described as individual component, and flow fuse can be integrated in nozzle.
Claims (16)
1. one kind for closing the controlling method of the fluid injection valve with leakage failure, this controlling method uses for motor especially, after wherein said valve is connected on flow fuse, described flow fuse is set to enter closed condition when the fluid flow by described flow fuse exceedes predetermined amount of flow value, said method comprising the steps of: the leakage failure detecting described valve; And control described valve and spray and exceed the fluid flow of described predetermined amount of flow value, thus trigger described flow fuse to enter described closed condition, and cut off the fluid supply of described valve.
2. controlling method according to claim 1, wherein, described predetermined amount of flow value is expressed as follows every value: flow velocity, volume flow rate, mass flowrate, the total fluid volume in scheduled time slot, the total fluid mass in scheduled time slot or the cumulative flow scale of construction arrived by volume or mass measurement.
3. the controlling method according to claim 1 and/or 2, wherein, described fluid injection valve be suitable for by fuel under stress spray to the fuel burner in the cylinder of internal-combustion engine, and detect the leakage failure of described nozzle based on the exception of at least one serviceability parameter of described motor.
4. controlling method according to claim 3, wherein, described serviceability parameter be every as follows at least one: exhaust gas temperature, cylinder pressure, fuel consumption, speed of crankshaft and crank torque.
5. the controlling method according to claim 3 and/or 4, wherein, described operating parameter is monitored by control unit of engine ECU, and wherein, described control unit of engine causes the spray during engine strokes of described nozzle to exceed the fuel of fuel-laden spray amount, described fuel-laden spray amount with when described motor is with corresponding by the spray fuel quantity of described nozzle spray in engine strokes during capacity operation.
6. controlling method according to claim 5, wherein, described spray fuel quantity is at least 101% of described fuel-laden spray amount, preferably at least 120%, and most preferably in the scope comprising 130% to 170%.
7. the controlling method according to claim 1 and/or 2, wherein, described fluid injection valve is following sparger, the contact surface that this sparger is used in internal combustion engine sprays lubricant, spray lubricant to piston/cylinder contact surface especially, and wherein detect described leakage failure based on the exception of at least one serviceability parameter of described motor.
8. controlling method according to claim 7, wherein, described serviceability parameter be every as follows at least one: lubricant supply pressure, lubricant consumption, exhaust gas temperature and cylinder pressure.
9. the controlling method according to any one in claim 1 to 8, wherein, described motor is provided with fuel flow rate protecting device, and described fluid injection valve is fuel burner, and wherein, described motor is also provided with lubricant flow fuse, and wherein said fluid injection valve is lubricant sparger, and wherein, the detection of the leakage failure of convection cell injection valve comprises according to Fluid injection valve-type the differentiation with abnormal operating parameter.
10. controlling method according to claim 9, wherein, the operating parameter for described differentiation comprises fuel consumption and lubricant pressure.
11. controlling methods according to any one in aforementioned claim 1 to 10, wherein, described flow fuse is arranged in the upstream of multiple fluid injection valve, and wherein said multiple fluid injection valve operates simultaneously, to spray the fluid flow exceeding the predetermined amount of flow value of flow fuse, thus trigger described flow fuse and enter described closed condition, and cut off the fluid supply of described multiple fluid injection valve.
12. controlling methods according to any one in aforementioned claim, wherein, described motor is direct fuel-injection engine, and the fuel system of described motor comprises wherein with the common rail of pressurized state storage of fuels, and wherein said flow fuse is arranged in the fuel conduit between described common rail and described fuel burner or described multiple fuel burner.
13. controlling methods according to claim 12, described motor comprises multiple cylinder, and for the described nozzle of each cylinder or described multiple nozzle, in each fuel supply conduit, arranges flow fuse.
14. controlling methods according to any one in aforementioned claim, wherein, described controlling method is further comprising the steps of: when fault being detected, display optical alarm and/or acoustics alarm; And/or when fault being detected, triggering described flow fuse and entering described closed condition.
15. controlling methods according to any one in aforementioned claim, wherein, perform described controlling method when not stopping described motor.
16. controlling methods according to claim 3, wherein, described motor has hydraulic system, this hydraulic system comprises the hydraulic amplifier of the fuel pressure for increasing propellant spray driven by described hydraulic system, wherein, flow fuse is arranged in described hydraulic system and is connected with pressure amplifier, and wherein, by from the excessive flow of described fuel burner spray, described flow fuse is triggered the supply of the hydraulic fluid interrupting described pressure amplifier.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/EP2012/063650 WO2014008936A1 (en) | 2012-07-12 | 2012-07-12 | Method for controlling a defective injector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104471226A true CN104471226A (en) | 2015-03-25 |
Family
ID=46548425
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201280074607.3A Pending CN104471226A (en) | 2012-07-12 | 2012-07-12 | Method for controlling a defective injector |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP2882953A1 (en) |
| JP (1) | JP2015522125A (en) |
| KR (1) | KR20150036030A (en) |
| CN (1) | CN104471226A (en) |
| WO (1) | WO2014008936A1 (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE59610232D1 (en) * | 1995-09-23 | 2003-04-24 | Bosch Gmbh Robert | Method and device for controlling an internal combustion engine |
| DE19632339A1 (en) * | 1996-08-10 | 1998-02-12 | Bosch Gmbh Robert | Method and device for monitoring a flow limiter of a fuel metering system of an internal combustion engine |
| FR2762358B1 (en) * | 1997-04-16 | 1999-07-09 | Peugeot | DEVICE FOR MONITORING THE OPERATION OF A DIESEL ENGINE, ESPECIALLY A MOTOR VEHICLE |
| DE19726183A1 (en) * | 1997-06-20 | 1998-12-24 | Bosch Gmbh Robert | Method and device for monitoring a fuel metering system |
| DE19860468A1 (en) * | 1998-12-28 | 2000-07-06 | Bosch Gmbh Robert | Fuel injection system |
| US7428893B2 (en) * | 2004-11-12 | 2008-09-30 | Caterpillar Inc | Electronic flow control valve |
-
2012
- 2012-07-12 EP EP12737764.6A patent/EP2882953A1/en not_active Withdrawn
- 2012-07-12 WO PCT/EP2012/063650 patent/WO2014008936A1/en active Application Filing
- 2012-07-12 JP JP2015520826A patent/JP2015522125A/en active Pending
- 2012-07-12 KR KR20157000585A patent/KR20150036030A/en not_active Application Discontinuation
- 2012-07-12 CN CN201280074607.3A patent/CN104471226A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| KR20150036030A (en) | 2015-04-07 |
| WO2014008936A1 (en) | 2014-01-16 |
| JP2015522125A (en) | 2015-08-03 |
| EP2882953A1 (en) | 2015-06-17 |
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Application publication date: 20150325 |