EP2478200A1 - Verfahren und vorrichtung zum bestimmen einer bewegung einer nadel eines einspritzventils - Google Patents
Verfahren und vorrichtung zum bestimmen einer bewegung einer nadel eines einspritzventilsInfo
- Publication number
- EP2478200A1 EP2478200A1 EP10754910A EP10754910A EP2478200A1 EP 2478200 A1 EP2478200 A1 EP 2478200A1 EP 10754910 A EP10754910 A EP 10754910A EP 10754910 A EP10754910 A EP 10754910A EP 2478200 A1 EP2478200 A1 EP 2478200A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pressure
- time
- control chamber
- piezoelectric element
- nozzle needle
- 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.)
- Granted
Links
- 238000002347 injection Methods 0.000 title claims abstract description 32
- 239000007924 injection Substances 0.000 title claims abstract description 32
- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000011156 evaluation Methods 0.000 claims description 7
- 239000002356 single layer Substances 0.000 claims description 2
- 239000000446 fuel Substances 0.000 description 14
- 238000010586 diagram Methods 0.000 description 7
- 238000001514 detection method Methods 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 3
- 230000004913 activation Effects 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000001427 coherent effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
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
- F02M57/00—Fuel-injectors combined or associated with other devices
- F02M57/005—Fuel-injectors combined or associated with other devices the devices being sensors
-
- 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
- F02D41/20—Output circuits, e.g. for controlling currents in command coils
-
- 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
- F02D41/20—Output circuits, e.g. for controlling currents in command coils
- F02D41/2096—Output circuits, e.g. for controlling currents in command coils for controlling piezoelectric injectors
-
- 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
- F02M47/00—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure
- F02M47/02—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure of accumulator-injector type, i.e. having fuel pressure of accumulator tending to open, and fuel pressure in other chamber tending to close, injection valves and having means for periodically releasing that closing pressure
- F02M47/027—Electrically actuated valves draining the chamber to release the closing pressure
-
- 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
- F02M65/00—Testing fuel-injection apparatus, e.g. testing injection timing ; Cleaning of fuel-injection apparatus
- F02M65/005—Measuring or detecting injection-valve lift, e.g. to determine injection timing
-
- 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
- F02D41/20—Output circuits, e.g. for controlling currents in command coils
- F02D2041/202—Output circuits, e.g. for controlling currents in command coils characterised by the control of the circuit
- F02D2041/2051—Output circuits, e.g. for controlling currents in command coils characterised by the control of the circuit using voltage control
-
- 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
- F02D41/20—Output circuits, e.g. for controlling currents in command coils
- F02D2041/202—Output circuits, e.g. for controlling currents in command coils characterised by the control of the circuit
- F02D2041/2055—Output circuits, e.g. for controlling currents in command coils characterised by the control of the circuit with means for determining actual opening or closing time
-
- 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
- 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
- F02D2200/0604—Estimation of fuel pressure
-
- 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
- F02D2200/0618—Actual fuel injection timing or delay, e.g. determined from fuel pressure drop
-
- 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
- F02D41/40—Controlling fuel injection of the high pressure type with means for controlling injection timing or duration
-
- 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
- F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
- F02M2200/24—Fuel-injection apparatus with sensors
- F02M2200/247—Pressure sensors
Definitions
- the invention relates to a method and an arrangement for determining a
- the opening duration of a nozzle needle influences an injected fuel quantity. This opening period results indirectly from the activation duration or the duration of the energization of the actuator interacting with the fuel injector, for example 0 of a magnetic or piezoactuator, and the dynamic behavior of a high-pressure hydraulic system of the injection nozzle.
- common-rail injectors for the diesel injection actuated by the actuator switching valve is designed as a servo valve.
- the opening duration of the nozzle needle is additionally influenced by the dynamic behavior of the high-pressure hydraulics.
- the injected fuel quantity is also dependent on the opening duration of the nozzle needle.
- This injector for injecting fuel in a combustion chamber of an internal combustion engine is described in the document DE 10 2007 008 617 A1.
- This injector has a sensor for detecting the opening movement and / or the closing movement of a nozzle needle, which is designed as a piezoelectric or micromechanical acceleration sensor.
- the sensor is preferably arranged in the region of the injector head parallel or transverse to the longitudinal axis of the injector. It is particularly advantageous if the at least one sensor of the sensor module does not have direct contact with the high-pressure fuel, for example in the injector inlet and / or pressure chamber of the injector, and the measurement by the injector body and / or the nozzle body and / or through the injector plug. As a result, high-pressure tightness problems and high-pressure strength problems of the injector design can be avoided. Any delays in detecting the time-varying operating parameters can also be compensated.
- a method for determining a predetermined position of an armature in a solenoid valve is described in the publication DE 10 2007 031 552 A1.
- the armature can be converted by reducing a current through a solenoid of the solenoid valve with an output current from a predetermined starting position in the predetermined position.
- a detection of a time at which the armature occupies a certain position can be based on the time course of the measured current intensity of the current through the magnetic coil during the predetermined period of time.
- common-rail injectors with servo-valve and downstream high-pressure hydraulics a number of other influences can occur during operation that generate inaccuracies in the switching chain.
- a nozzle seat wear typically changes the opening timing and opening phase of the nozzle needle with the servo valve and high pressure hydraulics unchanged. If z. B. the nozzle needle lifts later or slower from the nozzle seat, it is at the time of reversal, when the servo valve closes again, have made a smaller stroke. Consequently, when closing, it will inevitably reach the nozzle seat sooner. Thus, a delayed opening of the needle also results in premature closure. Since the injected fuel quantity depends directly on the opening time of the needle, it thus leads to significant influences of an injected amount of fuel. The influence of pressure waves on the injected fuel quantity is based at least in part on a changed opening time of the nozzle needle. Another influence is the injection pressure available during injection.
- the closing time of the nozzle needle of the injection valve can be detected by qualitative sensing of the pressure in the control chamber.
- an injected amount of fuel can be accurately determined, since not only the inaccuracies of the servo valve but the entire switching chain of the injector or injector can be corrected. It is possible to compensate for the specimen scattering of similar injection valves as well as their drift over the life and the influence of variable boundary conditions, such. B. pressure oscillations in the line.
- the method can be implemented in a simple manner, since the operating principle of the invention is typically based on purely qualitative feature detection, by means of which both the opening and the closing of the nozzle needle can be detected.
- the invention is applicable to injectors with solenoid valves and piezo actuators.
- the control space at least one extremum, d. H. a minimum and / or a maximum.
- the course of the pressure is proportional to the voltage applied to the piezoelectric element. Consequently, the extremum to be determined also occurs at a zero point or a zero crossing of a pressure gradient and thus the first time derivative of the course of the pressure.
- the pressure gradient is usually proportional to the current flowing through a piezoelectric element.
- the arrangement described is designed to carry out all the steps of the presented method.
- individual steps of this method can also be carried out by individual components of the arrangement.
- functions of the arrangement or functions of individual components of the arrangement can be implemented as steps of the method.
- steps of the method may be realized as functions of individual components of the device or the entire device.
- FIG. 1 shows a schematic representation of a sectional view through a solenoid valve injector.
- FIG. 2 shows a schematic illustration of a control chamber of the solenoid valve injector from FIG. 1.
- FIG. 3 shows diagrams of operating parameters of an injector.
- FIG. 4 shows a schematic representation of an embodiment of an arrangement according to the invention.
- FIG. 1 shows a schematic sectional view through an injection valve 2 embodied as a solenoid valve injector.
- This injection valve 2 comprises an injector body 4 in which a valve piston 6 is arranged, which is guided at an upper end in a valve piece 8 and whose lower end is directed in the direction a nozzle 10 extends.
- a nozzle needle 1 1 is connected to the valve piston 6 and disposed within the nozzle 10.
- the valve piston 6 is connected to a high-pressure bore 12 and a return bore 14.
- a magnetic head 16, an armature assembly 18, and a return 20 are disposed.
- the injection valve 2 is further connected via an electrical connection 22 to an electrical energy source and via a high-pressure or high-pressure port 23, which comprises a rod filter, with a fuel supply line.
- FIG. 1 also shows a control chamber 24 of the injection valve 2.
- the magnetic head 16 When operating the injection valve 2, it is provided that the magnetic head 16 is energized, whereby the armature group 18 is moved toward the magnetic head. This opens the connection between the control chamber 24 above the valve piston 6 and the return 20. This triggers a drop in the pressure in Control chamber 24 and thus an opening movement of the composite of valve piston 6 and nozzle needle 1 1. By opening the nozzle needle 11, the connection between the high-pressure bore 12 and the spray holes of the nozzle 10 is established, whereby fuel is conveyed to the nozzle 10 and injected into a cylinder of an internal combustion engine.
- FIG. 1 Details of such an injection valve 2 or injector are shown schematically in FIG.
- a control chamber 24 is shown in Figure 2, which is bounded by an inner wall of the valve member 8 and arranged within the valve member 8 valve piston 6.
- FIG. 2 shows the control chamber 24 of the injection valve 2 in the idle state.
- the control chamber 24 is connected via an inlet throttle 26 to the high-pressure port for providing fuel, which is under rail pressure, and via a switchable
- Outflow throttle 28 connected to the return 20 of the injection valve 2.
- the flow through the outlet throttle 28 is blocked in the idle state by a switching valve, not shown here, and is released by activation of the switching valve.
- the pressure within the control chamber 24 causes a downward, ie in the closing direction of the nozzle needle 1 1, directed force on the valve piston 6, which forwards this force to the nozzle needle 1 1.
- Flight phase of the nozzle needle 1 1 acts through the pressure field under the nozzle needle 1 1 specific opening force on the nozzle needle 1 first
- the pressure in the control chamber 24 is adjusted in this time interval so that there is a balance of forces between the opening and closing force.
- the pressure in the control chamber 24 thus reflects the opening force of the nozzle needle 1 1 again.
- the injection valve 2 is always dimensioned so that in this case prevails in the control chamber 24, a pressure which is smaller than the rail pressure.
- FIG. 3 shows a first diagram 30 and a second diagram 32.
- the first diagram 30 comprises a vertically oriented axis 34, along which a pressure in the control chamber 24 in the unit bar is plotted over a horizontally oriented axis 36 for the time in milliseconds.
- a vertically oriented axis 38 is plotted over the horizontally oriented axis 36 for time in microns.
- a curve for a pressure 40 within the control chamber 24 is shown.
- a curve for a stroke 42 of the nozzle needle 1 1 is shown in the second diagram 32 in synchronism.
- the two diagrams 30, 32 show that an opening and closing effect as a change in movement of the nozzle needle 1 1 on the pressure 40 within the control chamber 24. So shows the
- Pressure 40 at the beginning of opening of the nozzle needle 1 1 a first, formed as a minimum extremum 44. After closing the nozzle needle 1 1, the pressure 40 has a second formed as a minimum extremum 46.
- An opening force on the nozzle needle 1 1 and thus the pressure 40 in the control chamber 24 are because of the then existing seat throttling at a small stroke 42 of the nozzle needle 1 1, ie immediately after opening and immediately before closing, particularly small.
- the rail pressure prevails in the control chamber 24. The then existing excess of the closing force against the opening force is mechanically in this case in the
- FIG. 4 shows schematically, a small piezoelement 48, which serves as a sensor, is arranged in the wall of the control chamber 24, usually in the region of the stationary valve piece 8. Electrical connections 50 of the piezoelement 48 are pushed back into the low-pressure region of the injection valve 2. executed. Furthermore, the two terminals 50 are connected to externally accessible plug contacts.
- the piezoelectric element 48 provides a voltage 52 which, less an offset voltage, is proportional to the pressure 40 in the control chamber 24. The offset voltage is variable over time, but is only subject to significantly slower fluctuations than is the case with the pressure 40 in the control chamber 24.
- the opening and / or the closing of the nozzle needle 11 is detected via an extremum in the course of the voltage 52 output by the piezoelement 48.
- a sealing of the control chamber 24 in the region of the piezoelectric element 48 for low pressure can be done by applying technologies that are suitable for products with electrical actuators in the high pressure region, eg. B. CRI3.3i the Robert Bosch GmbH, known, for. B. by Glaseinschmelzonne for performing electrical contacts and the like.
- the voltage 52 which emits the piezoelectric element 48 in the idle state, can be set to zero via a leakage resistance between the supply lines to the piezoelectric element 48 independently of the rail pressure.
- the bleeder resistor can be arranged in the injection valve 2, in a control unit 54, which is used in the context of the method as an evaluation and a voltage measuring device and an ammeter, or in a supply line between the controller 54 and the piezoelectric element 48. If required, the bleeder resistor can also be connected to a voltage source present in the control unit 48, so that the quiescent voltage of the piezoelectric element 48 can be set to any desired value, for example the voltage of this voltage source.
- An electrode of the piezoelectric element 48 may be connected in the injector or the injection valve 2 to the injector body 4 or injector housing and thus to the mass of the vehicle. In this case, only one sensor line is led out of the injection valve 2 and evaluated their electrical potential to ground.
- the piezoelectric element 48 may also be terminated via a low-resistance resistor, so that, instead of the voltage 52 U, the current I output by the piezoelectric element 48 is evaluated.
- This stream is equal to Gradients of the charge on the electrodes of the piezoelectric element 48 and thus proportional to the pressure gradient dp / dt in the control room.
- the opening and closing time of the nozzle needle 1 1 always go in this case with a sign reversal of the output from the piezoelectric element 48 current. This current zero crossing is then detected in each case.
- the piezoelectric element 48 may be formed in a single-layer technique, similar to a Zündpiezo a lighter, particularly advantageous in connection with the evaluation of the voltage 52, or in multilayer technology particularly advantageous in connection with the evaluation of the current.
- injection valve 2 embodied as a solenoid valve injector. But it can also be used for piezo injectors.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Analytical Chemistry (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102009029549A DE102009029549A1 (de) | 2009-09-17 | 2009-09-17 | Verfahren zum Bestimmen eines Zeitpunkts |
PCT/EP2010/063185 WO2011032873A1 (de) | 2009-09-17 | 2010-09-08 | Verfahren und vorrichtung zum bestimmen einer bewegung einer nadel eines einspritzventils |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2478200A1 true EP2478200A1 (de) | 2012-07-25 |
EP2478200B1 EP2478200B1 (de) | 2015-04-22 |
Family
ID=43478039
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP10754910.7A Active EP2478200B1 (de) | 2009-09-17 | 2010-09-08 | Verfahren und vorrichtung zum bestimmen einer bewegung eines nadels eines einspritzventils |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP2478200B1 (de) |
CN (1) | CN102575607B (de) |
DE (1) | DE102009029549A1 (de) |
IN (1) | IN2012DN00278A (de) |
WO (1) | WO2011032873A1 (de) |
Families Citing this family (27)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102011075732B4 (de) | 2011-05-12 | 2021-02-11 | Vitesco Technologies GmbH | Regelverfahren für ein Einspritzventil und Einspritzsystem |
DE102012222851B4 (de) * | 2012-12-12 | 2021-12-02 | Robert Bosch Gmbh | Verfahren zur Kontrolle eines Piezo-Injektors |
DE102014204098A1 (de) * | 2014-03-06 | 2015-09-10 | Robert Bosch Gmbh | Verfahren zur Regelung eines Common-Rail-Injektors |
DE102014209823B4 (de) * | 2014-05-23 | 2016-03-31 | Continental Automotive Gmbh | Verfahren zur Bestimmung der Schließcharakteristik des Steuerventils eines Piezo-Servoinjektors |
DE102014210561A1 (de) * | 2014-06-04 | 2015-12-17 | Robert Bosch Gmbh | Verfahren zur Steuerung von Mehrfacheinspritzungen insbesondere bei einem Kraftstoff-Einspritzsystem einer Brennkraftmaschine |
DE102014213202A1 (de) | 2014-07-08 | 2016-01-14 | Robert Bosch Gmbh | Außenöffnendes Ventil, das insbesondere für Anlagen an Brennkraftmaschinen dient |
DE102014221706A1 (de) | 2014-10-24 | 2016-04-28 | Robert Bosch Gmbh | Verfahren zur Bestromung eines Magnetventils eines Kraftstoffinjektors |
DE102014226179A1 (de) | 2014-12-17 | 2016-06-23 | Robert Bosch Gmbh | Verfahren zum Regeln eines Kraftstoffinjektors |
JP6237655B2 (ja) * | 2015-01-15 | 2017-11-29 | トヨタ自動車株式会社 | 燃料噴射量制御装置の監視装置 |
DE102015202876A1 (de) * | 2015-02-18 | 2016-08-18 | Robert Bosch Gmbh | Ventileinrichtung |
DE102015206128A1 (de) * | 2015-04-07 | 2016-10-13 | Robert Bosch Gmbh | Verfahren zum Betreiben eines Kraftstoffinjektors |
GB201511007D0 (en) | 2015-06-23 | 2015-08-05 | Delphi Int Operations Lux Srl | Nozzle assembly with adaptive closed signal |
DE102015212085B4 (de) * | 2015-06-29 | 2017-10-19 | Continental Automotive Gmbh | Verfahren und Vorrichtung zur Ermittlung des minimalen hydraulischen Spritzabstandes eines Piezo-Servo-Injektors |
DE102015217776A1 (de) | 2015-09-17 | 2017-03-23 | Robert Bosch Gmbh | Verfahren zur Erkennung einer Schädigung einer Düsennadel eines Kraftstoffinjektors oder des Düsennadelsitzes |
DE102016217306A1 (de) * | 2016-09-12 | 2018-03-15 | Robert Bosch Gmbh | Verfahren zur Steuerung von Mehrfacheinspritzungen bei einem Einspritzsystem |
DE102017205695A1 (de) | 2017-04-04 | 2018-10-04 | Robert Bosch Gmbh | Verfahren zum Ermitteln eines Ankerhubes eines Kraftstoffinjektors |
DE102017206366A1 (de) | 2017-04-13 | 2018-10-18 | Robert Bosch Gmbh | Verfahren zum Betreiben eines Kraftstoffinjektors |
DE102017211582A1 (de) | 2017-07-06 | 2019-01-10 | Robert Bosch Gmbh | Verfahren zur Regelung eines Kraftstoffinjektors |
DE102017211583A1 (de) | 2017-07-06 | 2019-01-10 | Robert Bosch Gmbh | Verfahren zum Ermitteln einer Undichtigkeit eines Kraftstoffinjektors |
DE102018200205A1 (de) | 2018-01-09 | 2019-07-11 | Robert Bosch Gmbh | Verfahren zur Ermittlung eines Ankerhubs eines Kraftstoffinjektors und zum Betreiben des Kraftstoffinjektors |
DE102019209690A1 (de) | 2018-09-10 | 2020-03-12 | Robert Bosch Gmbh | Verfahren zur Steuerung der Kraftstoffzumessung in eine Brennkraftmaschine |
DE102018218229A1 (de) | 2018-10-24 | 2020-04-30 | Robert Bosch Gmbh | Verfahren zum Ermitteln einer Ladungskonstante |
RU198569U1 (ru) * | 2020-02-25 | 2020-07-16 | Общество с ограниченной ответственностью Управляющая компания "Алтайский завод прецизионных изделий" | Устройство для определения быстродействия электромагнитного актуатора топливной форсунки |
DE102021205381A1 (de) | 2021-05-27 | 2022-12-01 | Robert Bosch Gesellschaft mit beschränkter Haftung | Verfahren zum Charakterisieren von Kraftstoff |
DE102022205734A1 (de) | 2022-06-07 | 2023-12-07 | Robert Bosch Gesellschaft mit beschränkter Haftung | Verfahren zur Ansteuerung eines Injektors, Steuergerät |
DE102022211245A1 (de) | 2022-10-24 | 2024-04-25 | Robert Bosch Gesellschaft mit beschränkter Haftung | Verfahren zum Ermitteln eines oder mehrerer charakteristischer Zeitpunkte einer Kraftstoffeinspritzung |
DE102022212772A1 (de) | 2022-11-29 | 2024-05-29 | Robert Bosch Gesellschaft mit beschränkter Haftung | Verfahren zur Ansteuerung eines Injektors, Steuergerät |
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DE3609599A1 (de) | 1986-03-21 | 1987-09-24 | Bosch Gmbh Robert | Verfahren zur steuerung der entregungszeit von elektromagnetischen einrichtungen, insbesondere von elektromagnetischen ventilen bei brennkraftmaschinen |
DE3843138A1 (de) | 1988-12-22 | 1990-06-28 | Bosch Gmbh Robert | Verfahren zur steuerung und erfassung der bewegung eines ankers eines elektromagnetischen schaltorgans |
DE102007008617A1 (de) * | 2007-02-22 | 2008-08-28 | Robert Bosch Gmbh | Injektor mit Sensormodul sowie Einspritzsystem |
DE102007031552A1 (de) | 2007-07-06 | 2009-01-08 | Robert Bosch Gmbh | Verfahren zum Ermitteln einer Position eines Ankers in einem Magnetventil und Vorrichtung zum Betreiben eines Magnetventils mit einem Anker |
DE102007045606B3 (de) * | 2007-09-25 | 2009-02-26 | Mtu Friedrichshafen Gmbh | Verfahren zur Steuerung und Regelung einer Brennkraftmaschine mit Common-Railsystem einschließlich Einzelspeichern |
US7896257B2 (en) * | 2008-02-16 | 2011-03-01 | Mi Yan | Fuel injector with real-time feedback control |
JP4894804B2 (ja) * | 2008-03-28 | 2012-03-14 | 株式会社デンソー | 燃料噴射弁 |
-
2009
- 2009-09-17 DE DE102009029549A patent/DE102009029549A1/de not_active Withdrawn
-
2010
- 2010-09-08 WO PCT/EP2010/063185 patent/WO2011032873A1/de active Application Filing
- 2010-09-08 CN CN201080041445.4A patent/CN102575607B/zh active Active
- 2010-09-08 EP EP10754910.7A patent/EP2478200B1/de active Active
- 2010-09-08 IN IN278DEN2012 patent/IN2012DN00278A/en unknown
Non-Patent Citations (1)
Title |
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See references of WO2011032873A1 * |
Also Published As
Publication number | Publication date |
---|---|
EP2478200B1 (de) | 2015-04-22 |
CN102575607A (zh) | 2012-07-11 |
CN102575607B (zh) | 2015-06-24 |
IN2012DN00278A (de) | 2015-05-08 |
WO2011032873A1 (de) | 2011-03-24 |
DE102009029549A1 (de) | 2011-03-24 |
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