WO2005119038A1 - Procede et dispositif pour commander une soupape d'injection - Google Patents

Procede et dispositif pour commander une soupape d'injection Download PDF

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Publication number
WO2005119038A1
WO2005119038A1 PCT/EP2005/051733 EP2005051733W WO2005119038A1 WO 2005119038 A1 WO2005119038 A1 WO 2005119038A1 EP 2005051733 W EP2005051733 W EP 2005051733W WO 2005119038 A1 WO2005119038 A1 WO 2005119038A1
Authority
WO
WIPO (PCT)
Prior art keywords
signal
nozzle needle
actuator
pressure
closed position
Prior art date
Application number
PCT/EP2005/051733
Other languages
German (de)
English (en)
Inventor
Hellmut Freudenberg
Christian Hauser
Gonzalo Medina-Sanchez
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
Publication of WO2005119038A1 publication Critical patent/WO2005119038A1/fr

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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
    • F02D41/20—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
    • 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

Definitions

  • the invention relates to a method and a device for controlling an injection valve, in particular an injection valve for metering fuel into an internal combustion engine.
  • a particularly good mixture preparation can be achieved if one or more pre-injections take place before a main injection, which are also referred to as pilot injections, with given for the individual pre-injection if a very low fuel mass is to be metered. Precise control of the injection valve is very important, especially in the cases.
  • DE 199 30 309 C2 discloses a method and a device for controlling an injection valve with a piezo actuator and with a control chamber, the pressure of which acts on a movable nozzle body with a nozzle needle for opening and closing injection holes. Furthermore, a control valve is connected to the control chamber, which is actuated by the piezo actuator. After charging the piezo actuator, the voltage drop across it is recorded. A needle opening time is determined depending on the times at which the voltage drop assumes a predetermined first value or a predetermined second value.
  • the injection valve has an actuator which is operatively connected to an actuator with which the pressure in a control room can be influenced.
  • a nozzle needle is provided which is operatively connected to the pressure in the control room. Depending on the pressure in the control chamber, the nozzle needle can be moved into different positions in which different injection states of the injection valve can be set.
  • the actuator is designed as a piezoelectric actuator. The voltage drop across the piezoelectric actuator is detected as a detection signal when a change in the voltage occurs. The detection signal then serves as information for determining an injection timing.
  • WO 01/63121 discloses a method for detecting injection events of an injection valve with a piezoelectric actuator.
  • the injection valve comprises an injector body with a control chamber, with which a control valve is assigned which controls the fuel pressure in the control chamber.
  • the piezoelectric actuator acts on the control valve.
  • a voltage is applied to the piezoelectric actuator such that the resulting stroke of the piezoelectric actuator actuates the control valve.
  • Axial movement of a nozzle needle away from a valve seat is recognized as a function of an increase in the voltage drop across the piezoelectric actuator.
  • An end to the movement of the nozzle needle is recognized by an abrupt drop in the voltage on the piezoelectric actuator.
  • the object of the invention is to provide a method and a device which enables precise control of an injection valve.
  • the invention is characterized by a method and a corresponding device for controlling an injection valve with an actuator, with a control chamber, the pressure of which can be influenced as a function of the actuator, and with a nozzle needle, the position of which can be set as a function of the pressure in the control chamber.
  • An actuating signal for the actuator which is predefined as a function of operating parameters, is adapted as a function of a time profile of a signal that characterizes the pressure in the control chamber, namely as a function of at least two characteristic signal score the signal after controlling the nozzle needle (24) from its closed position and before subsequently controlling the nozzle needle (24) back to its closed position, which are turning points and / or extremes.
  • the invention makes use of the knowledge that turning points and extremes of the signal correlate very well with the time at which the nozzle needle is moved out of its closed position and the speed at which this takes place. They therefore correlate very well with the start of an injection and an amount of the measured fluid mass.
  • the invention is based on the knowledge that using the at least two characteristic signal points has the effect that measurement errors and errors which can occur when determining the characteristic signal points have a significantly smaller effect on the quality of a determined point in time when the nozzle needle moved out of it Closing position and the speed at which this occurs.
  • the actuating signal is determined as a function of a last and at least one previous characteristic signal point of the signal after controlling the nozzle needle (24) from its closed position and before subsequently controlling the nozzle needle (24) back to its closed position. This is based on the knowledge that the sensitivity to changes in the time at which the nozzle needle is moved out of its closed position and the speed at which this occurs at the last characteristic signal point on greatest is. In this way, the injection valve can be controlled very precisely.
  • the actuating signal depends on the last and at least one penultimate characteristic signal point of the signal after controlling the nozzle needle (24) from its closed position and before subsequently controlling the nozzle needle (24) back to its closed position becomes. In this way, the injection valve can be controlled particularly precisely.
  • control signal is adapted depending on the sum of the signal points. This is particularly easy.
  • control signal is adapted depending on a product of the signal points. It has been shown that adapting in this way is very robust even when measurement errors or errors occur when evaluating the signal, and at the same time a very high sensitivity to a deviation from the actually desired behavior is ensured. So it can the injection valve can be controlled very precisely.
  • the actuator is a piezo drive and the control signal is a voltage signal so that very short response times of the piezo drive can be guaranteed.
  • the signal characterizing the pressure in the control chamber is the voltage signal of the piezo drive.
  • the piezo actuator can also be used simultaneously as a pressure sensor.
  • one of the characteristic signal points is a break point after the start of the control of the nozzle needle from its closed position and before the first maximum of the signal is reached.
  • the beginning of the control of the nozzle needle from its closed position preferably corresponds to the start of an electrical control of the actuator in the sense that this causes the nozzle needle to be moved out of its closed position.
  • the activation time period results from the time period between the start of the control of the nozzle needle from its closed position to the start of the control of the nozzle needle back to its closed position.
  • the beginning of the control of the nozzle needle back into its closed position preferably corresponds to the start of an electrical control of the actuator in the sense that this causes the nozzle needle to move back into it Closing position takes place.
  • the break point is characterized by a high sensitivity.
  • FIG. 1 shows an injection valve with a control device
  • FIG. 2 is a flowchart of a program that is processed in the control device
  • FIG. 3 shows a time profile of a voltage signal of a piezo actuator of the injection valve according to FIG. 1.
  • An injection valve (FIG. 1) has an injector housing 1 with a recess into which a piezo actuator 4 is inserted, which is coupled to a transformer 6.
  • the transmitter 6 is arranged in a leakage space 8.
  • a switching valve 10, which is preferably designed as a servo valve, is arranged in such a way that, depending on its switching position, it controls a leakage fluid, which in this embodiment is preferably the fuel.
  • the switching valve is coupled to the piezo actuator 4 via the transformer 6 and is driven by it, that is to say the switching position of the switching valve 10 is set by means of the piezo actuator 4.
  • the switching valve 10 is arranged in a valve plate 12.
  • the injection valve further comprises a needle guide body 14 and a nozzle body 16.
  • the valve plate 12, the needle Guide body 14 and the nozzle body 16 form a nozzle assembly which is fastened to the injector housing 1 by means of a nozzle clamping nut 18.
  • the needle guide body 14 has a recess which is continued as a recess of the nozzle body 16 in the nozzle body 16 and in which a nozzle needle 24 is arranged.
  • the nozzle needle 24 is guided in the needle guide body 14.
  • a nozzle spring 26 biases the nozzle needle 24 into a closed position in which it prevents fuel flow through an injection nozzle 28.
  • a control chamber 30 is formed, which is hydraulically coupled to a high-pressure bore 32 via an inlet throttle. If the switching valve 10 is in its closed position, the control chamber 30 is hydraulically decoupled from the leakage chamber 8. This has the consequence that after the switching valve 10 is closed, the pressure in the control chamber 30 essentially adjusts to the pressure in the high-pressure bore 32.
  • the high-pressure bore 32 is hydraulically coupled to a high-pressure fuel reservoir and is thus supplied with fuel under a pressure of, for example, up to 2000 bar.
  • a pressure in the closing direction of the nozzle needle 24 is exerted on an end face of the nozzle needle 24 via the control chamber 30 due to the fluid pressure in the control chamber 30.
  • the nozzle needle 24 furthermore has a shoulder axially spaced apart from its end face, which is acted upon by fluid that flows through the high-pressure bore 32 in such a way that an opening force acts on the nozzle needle 24.
  • the nozzle needle 24 In your If the nozzle needle 24 is in the closed position, it prevents fuel flow through the injection nozzle 28. If the nozzle needle 24 moves from its closed position into the control chamber 30, it releases the fuel flow through the injection nozzle 28, in particular in its open position, in which it is in contact with the Area of the wall of the control chamber 30, which is formed by the valve plate 12.
  • Whether the nozzle needle 24 is in its open position or in its closed position depends on whether the force which is caused on the shoulder of the nozzle needle 24 by the pressure of the fluid there is greater or less than the force which is caused by the nozzle spring 26 and the pressure acting on the end face of the nozzle needle 24.
  • the switching valve 10 If the switching valve 10 is in its open position, fluid flows from the control chamber 30 through the switching valve 10 into the leakage chamber 8. With a suitable dimensioning of the inlet throttle, the pressure in the control chamber 30 then drops, which ultimately leads to a movement of the nozzle needle into its open position leads.
  • the pressure of the fluid in the leakage space 8 is significantly lower than the pressure of the fluid in the high pressure bore.
  • a control device 40 is assigned to the injection valve.
  • the control device 40 is designed to generate an actuating signal for the actuating drive of the injection valve, which in the present exemplary embodiment is the piezo actuator 4.
  • the control signal is preferably a current signal IS, which is preferably pulse-height modulated.
  • a predetermined number of pulses is preferably se, for example 20, with a predetermined time duration and period until the charging process is completed.
  • the electrical energy to be supplied to the piezo actuator during the charging process is set via the level of the respective pulse.
  • the energy to be supplied to the piezo actuator 4 during a charging process is determined as a function of operating parameters.
  • the energy supplied to the actuator influences its axial stroke and thus also the course of the pressure in the control chamber 30.
  • control device 40 is designed to detect a signal that characterizes the pressure in the control chamber 30.
  • the signal is a voltage signal US that characterizes the voltage drop across the piezo actuator 4.
  • the control device 40 preferably further comprises at least one driver which is assigned to the injection valve and which ensures a low-resistance supply of the current signal IS during the charging process LAV and a discharging process ELV and which is otherwise high-impedance.
  • a program for adapting the current signal IS is explained in more detail below with reference to the flow diagram in FIG. 2.
  • the program is stored in the control device 40 and is processed in the control device 40 during the operation of the injection valve.
  • the program is started in a step S1.
  • step S2 it is checked whether a charging process LAV has been started. If this is not the case, the program remains in step S4 for a predeterminable waiting time period T_W or, if appropriate, in the case of an internal combustion engine for a period of a predetermined crankshaft angle. The condition of step S2 is then checked again.
  • step S2 If, on the other hand, the condition of step S2 is met, the voltage signal US is recorded in step S6 and temporarily stored, including associated time information.
  • step S8 it is then checked whether an unloading process ELV has been started. If this is not the case, the processing is continued again in step S6 and the voltage signal US is further detected and temporarily stored. If, on the other hand, the condition of step S8 is met, the processing is continued in a step S10.
  • the loading process LAV causes the piezo actuator 4 to be lengthened in the axial direction and thus controls the nozzle needle 24 from its closed position.
  • the unloading process ELV shortens the axial length of the piezo actuator 4 and thus moves the nozzle needle 24 into its closed position.
  • the time period between the start of the charging process LAV and the start of the subsequent discharging process ELV of the piezo actuator 4 is referred to as the control time period of the piezo actuator 4.
  • the activation period essentially determines the metered amount of fluid.
  • the electrical energy supplied to the piezo actuator 4 during the charging process decisively determines the speed at which the nozzle needle 24 moves from its closed position to its open position.
  • steps S10 to S22 characteristic signal points of the voltage signal US are determined, the turning points, extremes or a break point before a first maximum Pl Voltage signals are US. Furthermore, in steps S10 to S22, the corresponding characteristic signal points of the voltage signal US are also assigned the corresponding points in time at which they occurred.
  • a time t_ ⁇ indicates a time of the start of a charging process LAV.
  • extremum, maximum and minimum are understood to mean relative extremes, maxima or minima and not necessarily absolute extremes, maxima or minima.
  • t ⁇ marks the time at which the discharge process ELV is started. All times are preferably related to the point in time at which the charging process LAV has ended.
  • step S10 an inflection point SHS is determined, which is located between the point in time ti of the start of the charging process LAV and the point in time at which the charging process LAV has ended.
  • a time t SH s of the break point SHS is assigned to the break point SHS.
  • the break point SHS is characteristic of the beginning of the movement of the switching valve 10 from its closed position. He therefore also characterizes one Time of a start of the movement of the nozzle needle 24 from its closed position.
  • the break point SHS is preferably determined by evaluating the first time derivative of the voltage signal US.
  • the first maximum P1 of the voltage signal US is determined and the time of the first maximum which is to be assigned to the first maximum P1 and which is generally the predetermined time t0 at which the charging process LAV is ended.
  • a first turning point B is determined and the time t B assigned to it.
  • step S16 a first minimum V of the voltage signal US is determined and the time t v assigned to it.
  • step S18 a second turning point G 1 of the voltage signal US is determined and a corresponding time t ⁇ i of the second turning point is assigned.
  • step S20 a second maximum P2 of the voltage signal U2 is determined and a time tp 2 of the second maximum of the voltage signal US is assigned.
  • a third turning point G2 of the voltage signal US is determined and the corresponding time t G3 is assigned to it.
  • the nu meration of the maxima, the minima and the turning points is in each case based on the first maximum Pl.
  • the time t 2 of the start of the discharge process is relative to the time to when the charging process LAV is ended, only one can Subset of the signal points described in steps S10 to S22 are determined. If the time t 2 of the start of the discharge process LAV is, for example, between the times t v and t G ⁇ of the first minimum V and the second turning point Gl, only the characteristic signal points of steps S10, S12, S14 and S16 can be determined and the corresponding times can be assigned to them.
  • step S24 which was the last characteristic signal point that could be determined on the basis of the actuation period of the piezo actuator 4.
  • the processing is then continued in a step S26 or S28 or S30 or S32 or S34. If the last characteristic signal point is the third turning point G2, the processing is continued in step S26. If the last characteristic signal point is the second maximum P2, the processing is continued in step S28. If the last characteristic signal point is the second turning point Gl, the processing is continued in a step S30. If the last characteristic signal point is the first minimum V, processing continues in step S32. If the last signal characteristic point of the first turning point B, so 'processing is continued in step S34.
  • a quality value GW is dependent on at least two of the times determined.
  • the characteristic signal points differ depending on the electrical energy actually supplied to the piezo actuator during the charging process LAV with an increasing time interval from the time t 0 at which the charging process LAV ends is more and more. They are then also with increasing time interval from the time to the charging process LAV has ended, is increasingly more suitable for correcting the current signal IS in such a way that the nozzle needle actually moves at the desired times and at the desired speed.
  • the quality value GW is thus determined in accordance with the available times depending on at least two times assigned to the corresponding characteristic signal points. It is particularly advantageous to determine the quality value at least as a function of the last or also the penultimate characteristic available signal point and thus to determine the quality value GW with the highest possible quality.
  • the quality value GW can be determined from any combination depending on at least two characteristic signal points.
  • the break point SHS also has a very high sensitivity and is therefore very well suited for determining the quality value GW.
  • the quality value GW can be determined by summing the corresponding points in time, which is very simple. Alternatively, however, it can also be determined by forming the product of the respective times. This results in a particularly high level of robustness against measurement errors when detecting the voltage signal US and evaluation errors of the voltage signal US, in particular when determining the respective characteristic signal points.
  • an electrical energy that is actually supplied to the piezo actuator 4 can simply be assigned, which forms the basis for a precise determination of a correction value KOR in a subsequent step S36.
  • the correction value KOR is then dependent in step S36 determined from the quality value GW.
  • This can be done by any assignment that has been appropriately determined. For example, this can be done by means of a map and corresponding map interpolation. It can also be carried out by means of any analytical function or also by means of a corresponding regulation which, for example, evaluates the deviation of the quality value GW from a predetermined value in a proportional, integral or differential manner.
  • a step S38 the current signal IS is then adjusted depending on the correction value KOR.
  • the signal characteristic of the course of the pressure in the control chamber can also be a signal deviating from the voltage signal US, such as a signal stored in the piezo actuator 4 Energy characterizing signal or a corresponding current signal.

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  • 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)
  • Fuel-Injection Apparatus (AREA)

Abstract

La présente invention concerne une soupape d'injection comprenant une servocommande, une chambre de commande dont la pression peut être modifiée en fonction de la servocommande, ainsi qu'une aiguille d'injecteur dont la position peut être réglée en fonction de la pression dans la chambre de commande. Un signal de réglage pour la servocommande est adapté en fonction d'un profil dans le temps d'un signal caractérisant la pression dans la chambre de commande et, par conséquent, en fonction d'au moins deux points de signal caractéristiques du signal, après une commande de l'aiguille d'injecteur (24) pour la faire sortir de sa position de fermeture et avant une commande successive de l'aiguille d'injecteur (24) pour la ramener dans sa position de fermeture, ces points étant des points d'inflexion et/ou des extrêmes.
PCT/EP2005/051733 2004-06-03 2005-04-20 Procede et dispositif pour commander une soupape d'injection WO2005119038A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004027141.0 2004-06-03
DE102004027141 2004-06-03

Publications (1)

Publication Number Publication Date
WO2005119038A1 true WO2005119038A1 (fr) 2005-12-15

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PCT/EP2005/051733 WO2005119038A1 (fr) 2004-06-03 2005-04-20 Procede et dispositif pour commander une soupape d'injection

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005024876A1 (de) * 2005-05-31 2006-12-14 Siemens Ag Verfahren und Vorrichtung zum Steuern eines Einspritzventils
WO2007107484A1 (fr) * 2006-03-22 2007-09-27 Robert Bosch Gmbh Procede de determination de la tension d'ouverture d'un injecteur piezoelectrique
WO2010121892A1 (fr) * 2009-04-21 2010-10-28 Continental Automotive Gmbh Procédé et dispositif permettant de faire fonctionner un injecteur de carburant
WO2010121889A1 (fr) * 2009-04-21 2010-10-28 Continental Automotive Gmbh Procédé et dispositif de détermination d'une pression dans un accumulateur haute pression
WO2015024692A1 (fr) * 2013-08-20 2015-02-26 Delphi International Operations Luxembourg S.À R.L. Ensemble de vanne de commande
CN105545512A (zh) * 2014-10-24 2016-05-04 罗伯特·博世有限公司 用于对燃料喷射器的磁阀通电的方法

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994013991A1 (fr) * 1992-12-08 1994-06-23 Pi Research Ltd. Electrovannes
DE19930309A1 (de) * 1999-07-01 2001-01-11 Siemens Ag Verfahren und Vorrichtung zur Regelung der Einspritzmenge bei einem Kraftstoffeinspritzventil mit Piezoelement-Aktor
EP1138909A1 (fr) * 2000-04-01 2001-10-04 Robert Bosch GmbH Procédé et dispositif de commande du procédé d'injection de combustible
DE10024662A1 (de) 2000-05-18 2001-12-06 Siemens Ag Einspritzventil mit einer Steuerschaltung und Verfahren zum Steuern eines Einspritzventils
EP1172541A1 (fr) * 2000-07-01 2002-01-16 Robert Bosch GmbH Actionneur piézo-électrique pour système d'injection
EP1541840A2 (fr) * 2003-12-09 2005-06-15 Siemens Aktiengesellschaft Procédé de fonctionnement d'un actionneur pour soupape d'injection et soupape d'injection

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994013991A1 (fr) * 1992-12-08 1994-06-23 Pi Research Ltd. Electrovannes
DE19930309A1 (de) * 1999-07-01 2001-01-11 Siemens Ag Verfahren und Vorrichtung zur Regelung der Einspritzmenge bei einem Kraftstoffeinspritzventil mit Piezoelement-Aktor
DE19930309C2 (de) 1999-07-01 2001-12-06 Siemens Ag Verfahren und Vorrichtung zur Regelung der Einspritzmenge bei einem Kraftstoffeinspritzventil mit Piezoelement-Aktor
EP1138909A1 (fr) * 2000-04-01 2001-10-04 Robert Bosch GmbH Procédé et dispositif de commande du procédé d'injection de combustible
DE10024662A1 (de) 2000-05-18 2001-12-06 Siemens Ag Einspritzventil mit einer Steuerschaltung und Verfahren zum Steuern eines Einspritzventils
EP1172541A1 (fr) * 2000-07-01 2002-01-16 Robert Bosch GmbH Actionneur piézo-électrique pour système d'injection
EP1541840A2 (fr) * 2003-12-09 2005-06-15 Siemens Aktiengesellschaft Procédé de fonctionnement d'un actionneur pour soupape d'injection et soupape d'injection

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005024876A1 (de) * 2005-05-31 2006-12-14 Siemens Ag Verfahren und Vorrichtung zum Steuern eines Einspritzventils
DE102005024876B4 (de) * 2005-05-31 2007-08-16 Siemens Ag Verfahren und Vorrichtung zum Steuern eines Einspritzventils
JP4705689B2 (ja) * 2006-03-22 2011-06-22 ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング 圧電インジェクタの開放電圧を確定するための方法
JP2009530538A (ja) * 2006-03-22 2009-08-27 ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング 圧電インジェクタの開放電圧を確定するための方法
WO2007107484A1 (fr) * 2006-03-22 2007-09-27 Robert Bosch Gmbh Procede de determination de la tension d'ouverture d'un injecteur piezoelectrique
WO2010121892A1 (fr) * 2009-04-21 2010-10-28 Continental Automotive Gmbh Procédé et dispositif permettant de faire fonctionner un injecteur de carburant
WO2010121889A1 (fr) * 2009-04-21 2010-10-28 Continental Automotive Gmbh Procédé et dispositif de détermination d'une pression dans un accumulateur haute pression
CN102414425A (zh) * 2009-04-21 2012-04-11 欧陆汽车有限责任公司 用于确定高压蓄压器中的压力的方法和装置
CN102422004A (zh) * 2009-04-21 2012-04-18 欧陆汽车有限责任公司 使喷射阀工作的方法和装置
US8726885B2 (en) 2009-04-21 2014-05-20 Continental Automotive Gmbh Method and device for determining a pressure in a high-pressure accumulator
US9200580B2 (en) 2009-04-21 2015-12-01 Continental Automotive Gmbh Method and device for operating an injection valve
WO2015024692A1 (fr) * 2013-08-20 2015-02-26 Delphi International Operations Luxembourg S.À R.L. Ensemble de vanne de commande
CN105545512A (zh) * 2014-10-24 2016-05-04 罗伯特·博世有限公司 用于对燃料喷射器的磁阀通电的方法
CN105545512B (zh) * 2014-10-24 2021-06-18 罗伯特·博世有限公司 用于对燃料喷射器的磁阀通电的方法

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