WO2003104633A1 - Procede et dispositif pour mesurer et regler les temps d'ouverture et de fermeture d'une soupape de distribution piezoelectrique - Google Patents

Procede et dispositif pour mesurer et regler les temps d'ouverture et de fermeture d'une soupape de distribution piezoelectrique Download PDF

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Publication number
WO2003104633A1
WO2003104633A1 PCT/DE2003/001858 DE0301858W WO03104633A1 WO 2003104633 A1 WO2003104633 A1 WO 2003104633A1 DE 0301858 W DE0301858 W DE 0301858W WO 03104633 A1 WO03104633 A1 WO 03104633A1
Authority
WO
WIPO (PCT)
Prior art keywords
control valve
end position
piezo
time
pressure
Prior art date
Application number
PCT/DE2003/001858
Other languages
German (de)
English (en)
Inventor
Harald Schmidt
Harald Gegenfurtner
Walter Schrod
Richard Pirkl
Original Assignee
Siemens Aktiengesellschaft
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens Aktiengesellschaft filed Critical Siemens Aktiengesellschaft
Priority to EP03756964A priority Critical patent/EP1511928A1/fr
Publication of WO2003104633A1 publication Critical patent/WO2003104633A1/fr
Priority to US11/009,980 priority patent/US20050121535A1/en

Links

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
    • F02D41/20—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
    • F02M57/00—Fuel-injectors combined or associated with other devices
    • F02M57/02—Injectors structurally combined with fuel-injection pumps
    • F02M57/022—Injectors structurally combined with fuel-injection pumps characterised by the pump drive
    • F02M57/023—Injectors structurally combined with fuel-injection pumps characterised by the pump drive mechanical
    • 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
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/21—Fuel-injection apparatus with piezoelectric or magnetostrictive elements

Definitions

  • the invention relates to a method and a device for measuring the length of time that a valve needle of a piezo control valve needs to move from a first end position to a second end position.
  • Piezo control valves are used in piezo pump-nozzle units
  • PPE used for fuel quantity metering in internal combustion engines.
  • PPE fuel quantity metering in internal combustion engines.
  • the pump and nozzle form one unit.
  • the pump is operated either directly via a tappet or indirectly via a rocker arm from an engine camshaft.
  • the piezo control valve is controlled via an actuation unit in such a way that it is fully open in a first end position and completely closed in a second end position.
  • the control valve is open, the fuel is pressed back into the low-pressure fuel area by the pump piston via the piezo control valve during the piston stroke. If the control valve closes, the pump piston cannot push the fuel back into the low-pressure fuel range.
  • the fuel is compressed, which leads to an increase in pressure in the high-pressure area of the pump unit. If the pressure in the pump unit exceeds the opening pressure of the injection nozzle, fuel is injected into the combustion chamber of the internal combustion engine.
  • the closing time of the control valve thus determines the time of the fuel injection and the closing time the injection quantity.
  • the actuation unit of the PPE consists of a piezo actuator.
  • the expansion of the piezo actuator is proportional to the am Piezo actuator applied voltage (u (t)) and / or the applied current (i (t)).
  • the piezo actuator In order that the injection quantity spread is as small as possible, the piezo actuator must be as precise as possible to set the start, duration and end of the injection process by means of a precisely defined voltage (u (t)) and / or a precisely defined current (i (t)) can be controlled. Wear, aging processes and temperature changes lead to changed closing and opening times of the piezo control valve, as a result of which precise fuel injection quantity control can no longer be guaranteed.
  • DE 199 10 388 C2 discloses a method for checking that a capacitive actuator is functioning properly.
  • the actuator is checked by comparing the duration of the actuator actuation with the duration of the control signal which is responsible for the actuator actuation.
  • the correct functioning of the actuator is assumed if the measured duration of the actuation of the actuator lies within a range determined by the duration of the control signal.
  • the invention is based on the object of realizing a method and a device which precisely determine the actual closing and opening times of the control valve.
  • the object is achieved by the features of the independent claims.
  • Advantageous embodiments of the invention are characterized in the subclaims.
  • the invention is characterized in that the measurement of the actual closing and opening times of the control valve, in
  • An advantageous embodiment of the invention provides for the measurement of the time for moving the valve needle, from one end position to the other end position, on the running engine, within the time span within which the camshaft relates to the pump piston of the injection nozzle or to the corresponding one Transmission links, located within their base circle. During this time, the pump piston of the pump unit remains in its upper end position, the pressure in the control valve thus approximately corresponds to the pressure in the low-pressure fuel range.
  • a further advantageous embodiment of the invention provides for measuring the time period for moving the valve needle from one end position to the other end position with the camshaft stationary (engine off).
  • the pump piston does not perform a stroke and it is ensured that moving the valve needle does not lead to pressure surges within the control valve.
  • FIG. 1 shows a schematic illustration of a PPE
  • FIG. 2 shows a piezo control unit for the PPE shown in FIG. 1
  • Figure 3 is a schematic representation of the camshaft and the rocker arm for actuating the pump piston of the PPE;
  • FIG. 1 shows schematically a PPE.
  • the PPE shown is used to supply fuel into the combustion chamber of an internal combustion engine.
  • the PPE has a pump unit 1 which is used to build up the injection pressure.
  • the compressed fuel is injected into the combustion chamber of the internal combustion engine via an injection nozzle 10.
  • the PPE has a piezo control unit 20 with a control valve 21 and an externally controllable actuation unit 22.
  • the actuation unit 22 is designed as a piezoelectric actuator and is connected to the control unit 40, which contains an evaluation unit 41 and a control unit 42.
  • the pump unit 1, the injection nozzle 10 and the piezo control unit 20 preferably form a unit.
  • the pump unit 1 is driven directly or as shown via a rocker arm 3 by the camshaft 2.
  • the pump chamber 5 is connected to the control valve via a bypass bore 30. til 21, the piezo control unit 20 connected.
  • the control valve 21 When the control valve 21 is open, a free flow between the low-pressure fuel region 31 and the pump chamber 5 is ensured. In the suction stroke of the pump piston 4, fuel can be drawn into the pump chamber 5 from the low pressure region 31, through the control valve 21 and the bypass bore 30. If the control valve 21 remains open, the fuel is pressed back into the low-pressure fuel part 31 during the subsequent delivery stroke of the pump piston 4 without the fuel being compressed.
  • control valve 21, before or during the delivery stroke of the pump piston 4, is closed via the externally controllable actuating unit 22, the fuel in the pump chamber 5 is compressed. If the pressure in the pump chamber 5 exceeds the opening pressure of the injection nozzle 10, the injection nozzle opens and fuel becomes available injected into the combustion chamber of the internal combustion engine.
  • valve needle 50 which can be moved between a first and a second end position.
  • first end position 64 of the valve needle 50 indicated by the dashed lines, the control valve 21 is completely open and there is a connection between the low-pressure fuel area 31 and the high-pressure fuel area 52.
  • second end position 65 this is shown by the solid lines, is the control valve
  • valve needle 50 is located in the valve seat 51 on the housing side and separates the low-pressure fuel area 31 from the high-pressure fuel area 52. which is connected to the pump chamber 5 via the bypass bore 30.
  • the first end position can also be the position at which the control valve 21 is completely closed.
  • the second end position then corresponds to the position in which the control valve 21 is fully open.
  • the measurement of the closing or opening time of the control valve 21 then takes place analogously to the description in the exemplary embodiments.
  • the valve needle 50 is actuated via a piezo actuator 55. If the piezo actuator 55 is charged electrically, it expands and transmits a force to the pressure piece 57 via the end face 56.
  • the pressure piece 57 stands with a first lever 58 and a second lever 59 in contact.
  • the force that is transmitted from the piezo actuator 55 to the pressure piece 57 is amplified via the levers 58 and 59 and transmitted to a first axial end surface 70 of the valve needle 50.
  • the valve needle 50 is pressed into the valve seat 51.
  • the low-pressure fuel region 31 is connected to the control chamber 60, which is connected to the actuator chamber 62 via a compensating bore 61.
  • the actuator chamber 62 is in turn connected to the return 63, via which the fuel can flow from the actuator chamber 60 back into the low-pressure fuel region 31.
  • FIG. 3 shows a schematic illustration of an exemplary embodiment for actuating the PPE according to FIG. 1.
  • the pump piston 4 is actuated via the camshaft 2 of an internal combustion engine. With each revolution of the camshaft 2, the cam 81 of the camshaft 2 actuates a rocker arm 82.
  • the rocker arm 82 transmits and amplifies due to its
  • the pump piston 4 Leverage the force from the camshaft 2 to a transmission member 83 which in turn is in contact with the pump piston 4.
  • the pump piston 4 Depending on the position of the cam 81 relative to the rocker arm 82, the pump piston 4 is in a suction stroke, a delivery stroke, or it remains in its upper starting position between the end of the suction stroke and the beginning of the delivery stroke.
  • the pump piston 4 carries out a delivery stroke as long as the contact point 84, between the rocker arm 82 and the camshaft 2, is in the area of the cam start AN. If the contact point 84 is in the area of the cam run AB, the pump piston 4 performs a suction stroke.
  • the pump piston 4 remains in its upper starting position. In this time interval, the pressure between the high-pressure fuel area and the low-pressure fuel area is equalized and the valve needle 50 can be moved back and forth between the two end positions without pressure surges being generated in the process.
  • the time interval is therefore particularly well suited for measuring the closing and opening times of the control valve 21.
  • FIG. 4 shows a graph which illustrates the course of the piezo voltage (u (t)), the piezo current (i (t)) and the valve needle stroke (h (t)) for a closing process of the control valve 21.
  • an actuating signal is set, for example in the form of a normalization pulse SON, which gives the command to close the control valve 21.
  • the valve needle 50 moves between the time t S0N and the time t c from the first end position 64 to the second end position 65.
  • the time interval between t S0N and t c thus corresponds exactly to the length of time that the control valve 21, from the control command to complete closing required.
  • the counterforce is passed on to the piezo actuator 55 by the mechanical coupling of the valve needle 50, via the levers 58 and 59 and the pressure piece 57, and has the effect that charge carriers are induced which appear as discontinuities in the course of the piezo voltage (u (t ) ) to make noticable.
  • the discontinuity in the voltage curve can be determined particularly easily via the time derivative of the piezo voltage (u '(t)).
  • An electrical circuit which includes a differentiator with a subsequent threshold value detection is suitable for detecting the discontinuity in the voltage curve.
  • Figure 5 shows a graph showing the course of the piezo voltage (u (t)), the piezo current (i (t)) and the valve needle stroke (h (t)) and the piezo charge (q (t)), in particular for an opening process of the Control valve 21 illustrates.
  • an actuating signal is set, for example in the form of a normalization pulse EON, which gives the command to open control valve 21.
  • the valve needle 50 moves between the times t E oN and the time t 0 from the second end position 65 to the first end position 64.
  • the time interval between t E0 N and t 0 thus corresponds exactly to the time that the control valve 21 receives from the control command needed until fully opened.
  • the piezo actuator 55 is discharged and moves very quickly back to its starting position defined for the opening state.
  • the valve needle '50 and with it coupled mechanical components can DEM piezo actuator 55 is not follow-positively and meet as a result of the already present in its initial position piezo actuator 55.
  • the impact induces a charge in the piezo actuator 55 as a pulse in the voltage and / or current curve.
  • the discontinuity can be determined in a simple manner, for example by a simple threshold value detection.
  • FIG. 6 shows a schematic illustration of a flow chart for regulating the closing time of the control valve 21.
  • the regulating device includes the sensor 90, the control unit 40, which has an evaluation unit 41 and a control unit 42, and the actuation unit 22.
  • Setpoints are stored in control unit 40.
  • the evaluation of the variables recorded during the program run takes place in the evaluation unit 41.
  • the control unit 42 generates the necessary control signals for moving the valve needle 50.
  • the intervals in which the closing time measurements are to be carried out can, for example, at once, at the beginning of a new operating cycle will set.
  • the sensor 90 first determines in a step S1 in which position P IST the camshaft 2 is currently.
  • a camshaft speed sensor can be used as sensor 90 for this purpose.
  • a position sensor can also be used.
  • the current position P IST with a stored position P START compared.
  • the camshaft 2 is located within its base circle G with respect to the pump piston 4, preferably in the vicinity of the cam outlet AB.
  • the pump piston 4 is in its upper starting position and the pressure in the control valve 21 and in the injection nozzle 10 largely corresponds to the pressure of the low-pressure fuel region 31.
  • step S3a the closing process of the control valve 21 is initiated in step S3a, in which a normalization pulse SON is set, by which the actuating unit 22 is controlled.
  • the time tso_./ of the control is stored in step S3b, and the piezo actuator 55 is activated in step S3c and / or S3X, with the piezo voltage UPIE ZO and / or the piezo current i P ⁇ E - zo or the control energy E PIEZ0 applied.
  • a charge is thereby generated in the piezo actuator 55, as a result of which the piezo actuator 55 expands.
  • the expansion of the piezo actuator 55 causes the valve needle 50 to begin moving from its first end position 64 to its second end position 65.
  • valve needle 50 hits the valve seat 51, a force is transmitted to the piezo actuator 55 by the mechanical coupling of the valve needle 50 to the piezo actuator 55.
  • the sudden action of force on the piezo actuator 55 when the valve needle 50 strikes the valve seat 51 has the effect that a charge is suddenly induced in the piezo actuator 55 that is proportional to the force acting.
  • a step S4 the derivation of the piezo voltage u ' P ⁇ EZ0 is formed and in a step S5 or S5' the curve of the derived piezo voltage u ' P ⁇ EZ o or the curve of the piezo current i P ⁇ EZ0 with a threshold value u Compare SC HWEL or iscHWEL. If the derived voltage U ' P ⁇ EZO or the current i P ⁇ EZ o exceeds the corresponding threshold values u' SCHWELL / or isc HEL , the program recognizes that the control valve 21 is closed.
  • the time t c at which the threshold value is exceeded and which corresponds to the closing time of the control valve 21 is recorded and stored in a further step S6.
  • the ACTUAL closing time t v _ ⁇ s ⁇ is calculated from the subtraction of the control time t S0N from the closing time t c .
  • the closing time difference ⁇ t is calculated in a further step S8 by subtracting the actual closing time tv_ ⁇ s ⁇ from the target closing time t v _soLL.
  • the piezo voltage u P ⁇ EZ0 and / or the piezo current i P ⁇ EZ0 or the control energy E PIEZ0 with which the piezo actuator 55 has been applied is too high or is selected too low. If ⁇ t v > 0, the actual closing time t v _ ⁇ s ⁇ is shorter than the desired closing time t v _soLL, ie the piezo voltage u P ⁇ EZ0 and / or the piezo current i P iEzo or the control energy E PIEZ0 are too high and become too high one last
  • Step SlO decreased. If ⁇ t v ⁇ 0, the actual closing time t v _ ⁇ s ⁇ is greater than the desired closing time t v _so LL, ie the piezo voltage u P ⁇ E zo and / or the piezo current ip ⁇ EZ o or the control energy E P ⁇ EZ0 are too low and SlO are increased in a last step. With the readjustment of the piezo voltage u PIEZ0 and / or the piezo current i P ⁇ EZ0 or the control energy E PIEZ0 , the program run ended and the valve closing time can be measured again.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)

Abstract

L'invention concerne un procédé et un dispositif pour mesurer le temps que nécessite l'aiguille (50) d'une soupape de distribution (21) d'une unité injecteur-pompe piézoélectrique pour passer d'une première position finale (64) en une deuxième position (65) finale. Ce temps dépend de la tension (u (t)) et/ou du courant (i (t)) appliqué à la soupape de distribution (21). Le signal de réglage est généré à un moment où la pression dans la soupape de distribution (21), pendant la mesure, correspond à la pression de la plage de basse pression du carburant (31).
PCT/DE2003/001858 2002-06-11 2003-06-03 Procede et dispositif pour mesurer et regler les temps d'ouverture et de fermeture d'une soupape de distribution piezoelectrique WO2003104633A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP03756964A EP1511928A1 (fr) 2002-06-11 2003-06-03 Procede et dispositif pour mesurer et regler les temps d'ouverture et de fermeture d'une soupape de distribution piezoelectrique
US11/009,980 US20050121535A1 (en) 2002-06-11 2004-12-10 Method and device for measuring and regulating the closing and opening times of a piezo control valve

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2002125911 DE10225911B3 (de) 2002-06-11 2002-06-11 Verfahren und Vorrichtung zum Messen und Regeln der Schließ- und Öffnungszeit eines Piezo-Steuerventils
DE10225911.9 2002-06-11

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US11/009,980 Continuation US20050121535A1 (en) 2002-06-11 2004-12-10 Method and device for measuring and regulating the closing and opening times of a piezo control valve

Publications (1)

Publication Number Publication Date
WO2003104633A1 true WO2003104633A1 (fr) 2003-12-18

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PCT/DE2003/001858 WO2003104633A1 (fr) 2002-06-11 2003-06-03 Procede et dispositif pour mesurer et regler les temps d'ouverture et de fermeture d'une soupape de distribution piezoelectrique

Country Status (3)

Country Link
EP (1) EP1511928A1 (fr)
DE (1) DE10225911B3 (fr)
WO (1) WO2003104633A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005059337A1 (fr) 2003-12-18 2005-06-30 Volkswagen Mechatronic Gmbh & Co. Kg Procede et dispositif pour reguler une soupape et procede et dispositif pour reguler un ensemble injecteur-pompe avec cette soupape
WO2005108765A1 (fr) * 2004-04-28 2005-11-17 Siemens Aktiengesellschaft Procede pour determiner un temps de fermeture d'un element de fermeture et ensemble circuit
DE102004027291A1 (de) * 2004-06-04 2006-01-12 Volkswagen Mechatronic Gmbh & Co. Kg Verfahren und Vorrichtung zum Steuern eines Ventils
US7258109B2 (en) * 2004-07-31 2007-08-21 Robert Bosch Gmbh Method for operating a fuel injection device, especially for a motor vehicle
DE102015206795A1 (de) * 2015-04-15 2016-10-20 Continental Automotive Gmbh Verfahren zum Betreiben eines piezogesteuerten direktbetätigten Einspritzventils

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005032087A1 (de) * 2005-07-08 2007-01-18 Siemens Ag Verfahren und Vorrichtung zum Steuern eines Einspritzventils
DE102012204278A1 (de) * 2012-03-19 2013-09-19 Continental Automotive Gmbh Verfahren zum Betreiben eines Kraftstoffeinspritzsystems und Kraftstoffeinspritzsystem mit Einspritzventil mit Regelung der Bewegung des Verschlusselementes

Citations (4)

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Publication number Priority date Publication date Assignee Title
DE19910388A1 (de) * 1999-03-09 2000-09-21 Siemens Ag Verfahren zum Ansteuern eines kapazitiven Stellgliedes
DE10038995A1 (de) * 1999-10-16 2001-04-19 Bosch Gmbh Robert Verfahren und Vorrichtung zur Steuerung der Kraftstoffzumessung in einer Brennkraftmaschine
EP1172541A1 (fr) * 2000-07-01 2002-01-16 Robert Bosch GmbH Actionneur piézo-électrique pour système d'injection
WO2003027468A1 (fr) * 2001-09-22 2003-04-03 Robert Bosch Gmbh Dispositif d'injection de carburant destine a un moteur a combustion interne

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19910388A1 (de) * 1999-03-09 2000-09-21 Siemens Ag Verfahren zum Ansteuern eines kapazitiven Stellgliedes
DE10038995A1 (de) * 1999-10-16 2001-04-19 Bosch Gmbh Robert Verfahren und Vorrichtung zur Steuerung der Kraftstoffzumessung in einer Brennkraftmaschine
EP1172541A1 (fr) * 2000-07-01 2002-01-16 Robert Bosch GmbH Actionneur piézo-électrique pour système d'injection
WO2003027468A1 (fr) * 2001-09-22 2003-04-03 Robert Bosch Gmbh Dispositif d'injection de carburant destine a un moteur a combustion interne

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005059337A1 (fr) 2003-12-18 2005-06-30 Volkswagen Mechatronic Gmbh & Co. Kg Procede et dispositif pour reguler une soupape et procede et dispositif pour reguler un ensemble injecteur-pompe avec cette soupape
DE10359675B3 (de) * 2003-12-18 2005-07-07 Volkswagen Mechatronic Gmbh & Co. Kg Verfahren und Vorrichtung zum Steuern eines Ventils und Verfahren und Vorrichtung zum Steuern einer Pumpe-Düse-Vorrichtung mit dem Ventil
US7275522B2 (en) 2003-12-18 2007-10-02 Siemens Ag Method and apparatus for controlling a valve, and method and apparatus for controlling a pump-nozzle apparatus with the valve
WO2005108765A1 (fr) * 2004-04-28 2005-11-17 Siemens Aktiengesellschaft Procede pour determiner un temps de fermeture d'un element de fermeture et ensemble circuit
US7413160B2 (en) 2004-04-28 2008-08-19 Siemens Aktiengesellschaft Method for determining a closing time of a closing element and circuit arrangement
DE102004020937B4 (de) * 2004-04-28 2010-07-15 Continental Automotive Gmbh Verfahren zum Bestimmen einer Schließzeit eines Schließgliedes und Schaltungsanordnung
DE102004027291A1 (de) * 2004-06-04 2006-01-12 Volkswagen Mechatronic Gmbh & Co. Kg Verfahren und Vorrichtung zum Steuern eines Ventils
DE102004027291B4 (de) * 2004-06-04 2009-11-26 Continental Automotive Gmbh Verfahren und Vorrichtung zum Steuern eines Ventils
US7690358B2 (en) 2004-06-04 2010-04-06 Continental Automotive Gmbh Method and device for controlling a valve
US7258109B2 (en) * 2004-07-31 2007-08-21 Robert Bosch Gmbh Method for operating a fuel injection device, especially for a motor vehicle
DE102015206795A1 (de) * 2015-04-15 2016-10-20 Continental Automotive Gmbh Verfahren zum Betreiben eines piezogesteuerten direktbetätigten Einspritzventils

Also Published As

Publication number Publication date
EP1511928A1 (fr) 2005-03-09
DE10225911B3 (de) 2004-02-12

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