WO2012159877A2 - Détermination du comportement d'ouverture standard d'un injecteur de carburant sur la base d'un comportement d'ouverture de test sous l'influence d'une impulsion de test à tension constante - Google Patents

Détermination du comportement d'ouverture standard d'un injecteur de carburant sur la base d'un comportement d'ouverture de test sous l'influence d'une impulsion de test à tension constante Download PDF

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Publication number
WO2012159877A2
WO2012159877A2 PCT/EP2012/058457 EP2012058457W WO2012159877A2 WO 2012159877 A2 WO2012159877 A2 WO 2012159877A2 EP 2012058457 W EP2012058457 W EP 2012058457W WO 2012159877 A2 WO2012159877 A2 WO 2012159877A2
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WO
WIPO (PCT)
Prior art keywords
time
test
coil drive
fuel injector
opp
Prior art date
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Ceased
Application number
PCT/EP2012/058457
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German (de)
English (en)
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WO2012159877A3 (fr
Inventor
Frank Denk
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Aumovio Germany GmbH
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Continental Automotive Technologies GmbH
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Publication of WO2012159877A3 publication Critical patent/WO2012159877A3/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • F02D41/24—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means
    • F02D41/2406—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using essentially read only memories
    • F02D41/2425—Particular ways of programming the data
    • F02D41/2429—Methods of calibrating or learning
    • F02D41/2451—Methods of calibrating or learning characterised by what is learned or calibrated
    • F02D41/2464—Characteristics of actuators
    • F02D41/2467—Characteristics of actuators for injectors
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/18—Circuit arrangements for obtaining desired operating characteristics, e.g. for slow operation, for sequential energisation of windings, for high-speed energisation of windings
    • H01F7/1844—Monitoring or fail-safe circuits
    • 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
    • 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
    • F02D2041/2058—Output circuits, e.g. for controlling currents in command coils characterised by the control of the circuit using information of the actual current value

Definitions

  • the present invention relates to the technical field of reflectors controlling Kraftstoffinj having a valve needle with a mechanically coupled magnetic armature and a coil having a spool drive for moving the magnetic ⁇ tables armature.
  • the present invention relates to a method and a device and a computer program for determining the temporal opening behavior of a fuel injector having a coil drive for an internal combustion engine of a motor vehicle.
  • the present invention relates to a method for determining a correlation between a temporal test opening behavior and a standard time series opening behavior of a coil drive Kraftstoffinj ector.
  • the present invention provides a method for driving a spool drive having a fuel injector for an internal combustion engine of a motor vehicle.
  • Fuel injector which is also referred to in this document as Spu ⁇ leninjektor required coil current is ty ⁇ pically provided by a suitable power controller hardware.
  • the adjusting time course of current through the coil of the coil drive is dependent inter alia on the inductance and the electrical resistance of the coil.
  • the electrical resistance is composed of the ohmic resistance of the winding (s) of the coil and the resistance of the (ferro) magnetic material of the Spuleninjektors together.
  • Eddy currents that flow in the ferromagnetic material due to magnetic flux changes are damped by the finite electrical resistance of the (ferro) magnetic material.
  • the present invention has for its object, as possible without an additional equipment expense to characterize the actual movement behavior of a Kraftstoffinj ector.
  • the prescribed method comprises (a) an energizing the coil drive with a test voltage profile which has an at least approximately constant test voltage in ⁇ nergur a predetermined test time slot, so that a magnetic armature of the coil drive from a closed position in which the Kraftstoffinj (b) measuring the time course of the current flowing through the coil drive current within the test time window, (c) identifying at least one characteristic (D) determining a time difference between the beginning of the test time window and the occurrence of the identified characteristic feature, and (e) determining the temporal opening behavior of the
  • Fuel injector which results in a loading of the coil drive with a standard series voltage profile, as a function of the determined time difference.
  • Test voltage level and not as usual with a booster or boost phase having voltage profile beholz ⁇ hits which although provides a desired rapid opening of the Spuleninjektors, which, however, makes it difficult or even impossible to recognize the cha ⁇ characteristic feature.
  • the standard series voltage profile can in particular have a temporal voltage curve in which a boost voltage is applied to the coil initially during an amplification phase, in order to ensure an accelerated movement of the armature of the coil drive from the closed position to the open ⁇ position.
  • a so-called freewheeling phase may follow, during which no voltage or only a significantly lower battery voltage than the amplification voltage is applied to the coil.
  • the magnet armature can reach its opening position already in the amplification phase or only in the freewheeling phase.
  • the freewheeling phase typically follows a so-called. Holding phase, within which the magnet armature is held in its open position. In the holding phase, a holding voltage is applied to the coil. In this case, an effective holding voltage level by a
  • Pulse width modulation can be achieved, which has a plurality of holding pulses, so that sets a predetermined holding current with a lower holding level and an upper holding level.
  • the characteristic feature for reaching the open position is indicative. This has the advantage that the achievement of a state of the Spuleninjektors can be detected with the described method, which is particularly characteristic of the opening behavior of the Spuleninjektors.
  • the method further comprises (a) identifying at least one further characteristic feature in the measured time course of the current intensity, and (b) determining a further time difference between the beginning of the test time window and the occurrence of the further identified characteristic feature.
  • the temporal opening behavior of the fuel injector which results when the coil drive is subjected to a standard series voltage profile, is additionally determined as a function of the determined further time difference.
  • the use of the further characteristic feature in the measured time curve of the current intensity during the test time window has the advantage that the opening behavior of the coil injector can be determined particularly accurately under the influence of the test voltage profile. This in turn allows a particularly accurate determination of temporal opening behavior of the coil or fuel injector under real conditions with the said standard series voltage profile.
  • the test voltage has a level which is less than or equal to the voltage level of a battery of the motor vehicle.
  • Test voltage level can have a well-defined value even in real operation of the motor vehicle, which ensures a particularly accurate determination of the motion behavior under the influence of the test voltage profile.
  • a level of the test voltage which is smaller than the battery voltage by a certain amount (eg, 1, 2, or 3 volts) and which is generated in a known manner from the battery voltage using a voltage converter supplying a fixed output voltage, has the advantage of that the level of the test voltage can be kept constant even with a fluctuating battery voltage.
  • the accuracy of the method described is independent of the current battery voltage.
  • fluctuating battery voltage levels that are within acceptable limits do not result in deterioration of accuracy in determining the opening performance.
  • the described test voltage can be generated, for example, by means of a 9V auxiliary winding on a DC / DC converter integrated in a motor control unit.
  • This test voltage is characterized by the fact that it remains constant even with a fluctuating battery voltage in a very good approximation. Since the test voltage is thus in principle smaller than the available battery voltage, the temporal current characteristic will thus lead to pronounced recognition of the two characteristic features during operation of the coil injector with this constant test voltage.
  • the characteristic and / or the further characteris ⁇ diagram feature is a turning point in the time course of the current strength of the current flowing through the coil drive current within the test window. This has the advantage that even small features that are difficult to recognize with the naked eye can be identified in the time course of the current intensity.
  • suitable mathematical methods for curve analysis can be used.
  • the inflection point of the characteristic feature and / or the further inflection point of the further characteristic feature can also be identified by means of a compensation curve or ., which describes the noisy course of the current.
  • the correlation determination method described comprises (a) loading the coil drive with a test voltage profile which has a constant test voltage within a predetermined test time window so that a magnet armature of the coil drive moves from a closed position, in which the Fuel injector is fully closed, in an open position in which the fuel injector is fully opened ector moves, (b) measuring the time course of a test fuel flow rate through the fuel ⁇ injector during the test time window, (c) a Determining a first time delay between the time of commencement of the test time window and the time of reaching a maximum test fuel flow rate, (d) subjecting the coil drive to a standard series voltage profile, (e) measuring the time course of a standard ⁇ rien-fuel flow rate through the fuel in ector under the influence of the standard series voltage profile, (f) determining a second time delay between the time of commencement of the standard series voltage profile and the
  • the described method for determining the correlation between the temporal test opening behavior and the standard time series opening behavior is based on the finding that the opening behavior of the fuel injector under the influence of the test voltage profile provides important information about the speed or dynamics of the opening process which shows the same fuel injector under the influence of the standard series voltage profile. It is assumed that ⁇ a fuel or Spuleninjektor, which opens slowly under the influence of the test voltage profile compared to other injectors, even with a real control with the standard series voltage profile shows a comparatively slow ⁇ opening behavior. The same applies of course also to an injector which opens relatively quickly under the influence of the test voltage profile in comparison to other injectors.
  • the standard ⁇ series voltage profile in particular a gain phase, a subsequent freewheeling phase and a subsequent holding phase have.
  • the corrosion further relations determination method on (a) determining a further first time delay between the time of commencement of the test time slot and the time a occurs at the first time zero test fuel through ⁇ flow rate, and (b) determining a further second one Delay between the time the standard series voltage profile starts and the time a non-zero standard series fuel flow rate occurs for the first time.
  • the correlation between the temporal test opening behavior and the standard time series opening behavior is further determined on the basis of a comparison between the further first time delay and the further second time delay.
  • the described determination of the correlation based on two pairs of time delays has the advantage that a particularly accurate relationship between the opening behavior under the influence of the test voltage profile and the opening behavior under the influence of the standard series voltage profile can be determined.
  • the expected actual opening behavior of the fuel injector under the influence of the standard series voltage profile are determined particularly accurately.
  • the point in time at which a non-zero fuel flow rate occurs for the first time defines the beginning of the respective opening phase of the injector under the influence of the test series or under the influence of the standard series control profile.
  • the described correlation between the temporal test opening behavior and the standard time series opening behavior which in particular in an engine test bench, which accurate detection of the
  • a method for driving a coil drive having a fuel ⁇ injector for an internal combustion engine of a motor vehicle has (a) determining the temporal opening behavior of the motor ⁇ ector stoffinj according to an embodiment of the method described above and (b) adjusting the electrical activation of the fuel injector based on the determined temporal opening behavior so that, with an injection process, a predetermined Amount of fuel is injected.
  • the driving method described is based on the finding that the above-explained method for determining the temporal opening behavior of a coil drive Kraftstoffinj ector can be used to (a) the expected actual movement behavior of a magnet armature of Kraftstoffinj under the influence of the standard series voltage profile determine (b) the actual one based on the determined movement behavior
  • Standard series voltage profile to adjust the electrical control of the fuel injector such that the fuel injection quantity ⁇ corresponds as accurately as possible predetermined for a given operating condition setpoint.
  • the adjustment of the electric actuation of the coil or fuel injector described can be calculated in particular by the above-explained in detail the correlation between the temporal behavior test port and the standard serial port temporal behavior of the fuel injector or ⁇ be true.
  • a device for determining the temporal opening behavior of a coil drive having Kraftstoffinj ector for an internal combustion engine of a motor vehicle comprises (a) a current control ⁇ means for applying the coil drive with a test voltage profile which within a predetermined
  • Test time window has a constant test voltage, so that a magnet armature of the coil drive from a closed position in which the fuel injector is completely closed, in an opening position in which the
  • Fuel injector is fully opened, moves, (b) a measuring device for measuring the time course of the
  • the device described is based on the knowledge that can be obtained under the influence of the test voltage profile in ⁇ mation about the speed of opening by means of the opening behavior of fuel ⁇ injector, which then for a prediction of the speed of opening under the influence of the standard series Voltage profiles can be used. It is assumed that a fuel or Spuleninjektor, which opens only slowly under the influence of the test voltage profile compared to other Spuleninjektoren even under a real drive shows a relatively slow opening behavior. The same applies of course also to an injector which opens relatively quickly under the influence of the test voltage profile in comparison to other Spuleninjektoren.
  • the characteristic feature described which may be for example a kink in an otherwise constantly rising at ⁇ course, is all the more pronounced, the lower the voltage applied to the coil voltage.
  • a computer program for determining the temporal opening behavior of a coil drive Kraftstoffinj engine for an internal combustion engine of a motor vehicle is described.
  • the computer program when executed by a processor, is configured to perform the method of determining the temporal opening behavior of a fuel injector having a coil drive.
  • Com ⁇ computer program equivalent to the concept of a Pro ⁇ program element, a computer program product and / or a computer-readable medium containing instructions for controlling a computer system to the operation of a system or a method in to coordinate suitably to achieve the effects associated with the method according to the invention.
  • the computer program may be implemented as a computer-readable instruction code in any suitable programming language such as JAVA, C ++, etc.
  • the computer program can be stored on a computer-readable storage medium (CD-ROM, DVD, Blue-ray disk, removable drive, volatile or non-volatile memory, built-in memory or processor, etc.).
  • the instruction code may program a computer or other programmable device such as, in particular, an engine control unit of a motor vehicle to perform the desired functions.
  • the computer program may be provided in a network, such as the Internet, from where it may be downloaded by a user as needed.
  • the invention can be implemented both by means of a computer program, i. software, as well as by means of one or more special electrical circuits, i. in hardware or in any hybrid form, i. using software components and hardware components.
  • FIG. 1 shows a device for determining the opening behavior of a fuel injector.
  • Figure 2 shows according to an embodiment of the invention, the time course of a voltage applied to a Spuleninjektor test voltage profile and the course of the resulting current flowing through the coil drive of the Spuleninjektors.
  • FIG. 3 shows a schematic representation of typical
  • Fuel flow rates through a fuel injector, in an engine test stand (a) having a gain phase exhibiting standard ⁇ se ⁇ voltage profile or (b) with a pulse having a constant test voltage
  • Test voltage profile is applied.
  • Figure 4 shows a schematic representation of the course of
  • FIG. 5 shows a pilot control characteristic for optimized driving of a coil injector.
  • FIG. 1 shows a device 100 for determining the opening behavior or the opening dynamics of a fuel injector.
  • the fuel injector is a conventional fuel injector which, in a known manner, has a coil drive with a magnet coil. By a suitable excitation of the magnetic coil, a magnetic field is generated, which moves a magnet armature of the coil drive along a displacement axis.
  • the magnet armature is connected to a needle of the fuel injector which, depending on its position, closes an opening of the fuel injector or releases it for a certain time for the purpose of fuel injection.
  • the device 100 has a current control device 102, a measuring device 104 and a data processing device 106.
  • the coil drive is subjected to a test voltage profile by means of the current control device 102, which has a constant test voltage within a predetermined test time window, so that a magnet armature of the coil drive moves from a closed position, in which the fuel injector is complete is closed, in an opening position in which the fuel injector is fully opened moves.
  • the measuring device 104 at least within the test time window, the time profile of the current intensity of the current flowing through the coil drive current is measured.
  • the data processing device 140 which may be implemented particularly in an engine control device by means of suitable hardware and / or by means of software is used, (a) the Identi ⁇ fy at least one characteristic feature in the measured time profile of the current intensity, (b) the determination of a time difference between the the start of the test time window, and the occurrence of the identified characteristic feature, and (c) determining the temporal opening behavior of fuel injector, which results in a loading ⁇ alsschlagung of the coil drive with a Standardse- rien-voltage profile as a function of the time difference determined.
  • Figure 2 shows according to an embodiment of the invention, the time course of a voltage applied to a Spuleninjektor test voltage profile and the course of the resulting
  • Amperage flowing through the coil drive of the Spuleninjektors In the diagram of Figure 2, the time t is plotted on the abscissa in the unit milliseconds. On the ordinate, the voltage applied to the coil injector or to the coil of the coil drive of the coil injector is plotted in the unit at 20 volts for the measuring curve denoted by "U”. For the measurement curve denoted by "I”, the current flowing through the coil injector or through the coil of the coil drive of the coil injector is plotted on the ordinate in the unit 2 amperes. For reasons of clarity, the zero point for the injector current I is compared to the zero point for the
  • the test voltage profile denoted by U shows a simple curve in which a voltage pulse is applied at a time of approximately 0.8 ms, which voltage pulse is applied within a test time window of approximately 0.8 ms to approximately 10 ms 8.8 ms an at least approximately constant voltage level of about 10 Volt assumes.
  • this voltage level is obtained from a battery voltage by means of a known voltage reduction, so that this voltage level always assumes the fixed voltage level of about 10 volts even with (slight) fluctuations of the battery voltage.
  • Inductance of the (solenoid) coil of the Spuleninjektors (a) at the time of the beginning of the opening phase of the Spuleninjektors (the magnetic armature begins to move from its closed position towards its open position) and (b) at the time of the end of the opening phase of the Spuleninjektors (the magnetic anchor is just reaching its open position).
  • the test voltage should definitely be much smaller than a boost voltage which is applied during normal operation of the Spuleninjektors for the purpose of opening the Spuleninjektors as fast as possible.
  • the test voltage is lowered by a known voltage reduction to a slightly lower level than the battery voltage, so that the test voltage remains at least approximately constant even with a slight fluctuation of the battery voltage. , 0
  • a current measuring method such as an analog detection of the current value via an analog / digital converter of a microcontroller on an engine control unit, it is possible in the test pulse phase to determine the two characteristic features 1 and 2 with a suitable software algorithm.
  • a detection of the two characteristic features 1 and 2 in the application of the Spuleninjektors with a standard standard series voltage ⁇ profile is usually not possible because the necessary for a regular operation of the Spuleninjektors standard ⁇ series voltage profile typically consists of a boost phase generated by means of a so-called boost voltage and a time-dependent hold phase, which is usually operated by means of the battery voltage.
  • the beginning of the opening of the Spuleninjektors is typically in time in the boost phase.
  • the end of the opening of the Spuleninjektors is typically shortly after the boost phase, in the region of the so-called freewheeling phase.
  • the boost phase the temporal current gradient is very positive.
  • the subsequent freewheeling phase shows typi ⁇ cally a negative high current gradient. For this reason, the detection of the two characteristic features 1 and 2 in the context of a regular standard ⁇ power profile with high current flow changes is usually not possible.
  • FIG. 3 shows a schematic representation of typical fuel flow rates through a fuel injector operating in a motor test stand (a) with a standard series voltage profile having a boost phase, or (b) with a test voltage profile having a pulse with a constant test voltage is charged.
  • a standard series current profile is referred to, which results from an application of the Spu ⁇ leninjektors with a Boostphase having Stan ⁇ dard series voltage profile.
  • the boost phase begins at time zero (intersection between ordinate and abscissa).
  • fuel flow begins at a time OPP_l_N.
  • the time OPP_l_N marks the beginning of the armature movement of the Spuleninjektors from its closed position in the direction of its open position.
  • the fuel flow rate reaches its maximum value. Therefore, the time OPP_2_N marks the end of the armature movement of the Spuleninjektors from its closed position to its open position.
  • the reference numeral 320 designates a test current profile, which results from an application of the coil injector with an at least approximately constant test voltage. The beginning of the application of the test voltage is also at time zero.
  • Reference numeral 322 denotes the time dependence of the resulting fuel flow rate under the influence of the test current profile.
  • the fuel flow starts at a time OPP_l_T and the time OPP_l_T thus marks the start of the armature movement of the coil injector from its closed position in the direction of its open position.
  • the fuel flow rate reaches its maximum value at a time OPP_2_T. This time therefore marks the reaching of the opening position of the magnetic armature of the Spuleninjektors. From FIG. 3 it can be seen that the temporal correlations At_OPP_l and At_OPP_2 between the two events of the standard series current profile (OPP_l_N and OPP_2_N) or
  • Test current profile (OPP_l_T and OPP_2_T) can easily determine. These correlations can then be used ector in actual operation of Kraftstoffinj to control the power ⁇ stoffinj ector in an optimized manner. In the real operation of the fuel injector, this happens from time to time Test voltage profile applied to the coil of the fuel injector. If the fuel injector then shows a comparatively slow opening behavior compared to a fuel injector of the same type measured on the engine test bench, then it is assumed that the fuel injector exhibits a comparatively slow opening behavior even under real driving (with an amplification phase). The activation of the
  • Fuel injector is then shifted to earlier times to have an accurate rate adjustment for each injection pulse.
  • the reference numeral 450 designates a time course of current through a real Spuleninjektor, which has both a certain inductance and a certain (temperature-dependent) electrical resistance.
  • the reference numeral 452 denotes a time course of current through an imaginary Spuleninjektor, which has only an electrical resistance.
  • the coil current I results from the following equation:
  • U is the constant voltage applied to the coil injector.
  • L is the coil inductance and t is the time.
  • the curve 450 of the real coil injector is described by the curve 452 for very small times and by the curve 454 for very large times.
  • FIG. 5 shows an exemplary pilot control characteristic curve for optimizing the control of a coil injector, which indicates the period of time At_OPP_X as a function of the temperature of the coil injector (injector temperature). Where "X" is the same as in 3 time periods At_OPP_l and At_OPP_2 for 1 or 2.
  • correction to be applied is determined by other physical system parameters, such as of the
  • Fuel temperature, the distance to the previous injection, etc. may depend. These dependencies can also be stored in suitable pilot-control characteristics or pre-tax identifiers or, if appropriate, also described by a model after corresponding measurements in an engine test bench.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)

Abstract

L'invention concerne un procédé de détermination du comportement d'ouverture d'un injecteur de carburant comportant un entraînement par bobine pour un moteur à combustion interne d'un véhicule automobile. Le procédé comprend les étapes suivantes consistant à : (a) soumettre l'entraînement par bobine à l'action d'un profil de tension de test (U) qui présente, dans une fenêtre temporelle de test, une tension de test au moins approximativement constante, de telle sorte qu'une armature d'aimant de l'entraînement par bobine se déplace d'une position de fermeture dans une position d'ouverture ; (b) mesurer la variation dans le temps de l'intensité (I) du courant circulant dans l'entraînement par bobine ; (c) identifier une caractéristique spécifique de la variation dans le temps de l'intensité du courant (I) ; (d) déterminer une différence temporelle (OPP_2_T) entre le début de la fenêtre temporelle de test et l'apparition de la caractéristique spécifique ; et (e) déterminer le comportement d'ouverture dans le temps de l'injecteur de carburant obtenu lorsque l'entraînement par bobine est soumis à un profil de tension standard, en fonction de la différence temporelle (OPP_2_T) déterminée. En outre, l'invention concerne un dispositif et un programme informatique conçus pour mettre en œuvre le procédé. L'invention concerne également un procédé permettant de déterminer une corrélation entre un comportement d'ouverture de test et un comportement d'ouverture standard d'un injecteur de carburant, et un procédé de commande de l'injecteur de carburant.
PCT/EP2012/058457 2011-05-24 2012-05-08 Détermination du comportement d'ouverture standard d'un injecteur de carburant sur la base d'un comportement d'ouverture de test sous l'influence d'une impulsion de test à tension constante Ceased WO2012159877A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011076363.5A DE102011076363B4 (de) 2011-05-24 2011-05-24 Verfahren und Vorrichtung zur Bestimmung des Öffnungsverhaltens eines Kraftstoffinjektors für eine Brennkraftmaschine
DE102011076363.5 2011-05-24

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WO2012159877A2 true WO2012159877A2 (fr) 2012-11-29
WO2012159877A3 WO2012159877A3 (fr) 2013-03-07

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10024264B2 (en) 2013-07-24 2018-07-17 Continental Automotive Gmbh Determination of the point in time of a predetermined open state of a fuel injector

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013205518B4 (de) * 2013-03-27 2023-08-10 Vitesco Technologies GmbH Ermittlung des Zeitpunkts eines vorbestimmten Öffnungszustandes eines Kraftstoffinjektors
DE102013206600B4 (de) 2013-04-12 2015-08-06 Continental Automotive Gmbh Einspritzsystem zum Einspritzen von Kraftstoff in eine Brennkraftmaschine und Regelverfahren für ein solches Einspritzsystem
DE102013207555B3 (de) 2013-04-25 2014-10-09 Continental Automotive Gmbh Verfahren zur Einspritzmengenadaption
EP2796703B1 (fr) 2013-04-26 2016-07-20 Continental Automotive GmbH Ensemble de soupape pour soupape d'injection et soupape d'injection
DE102013209077B4 (de) 2013-05-16 2019-06-06 Continental Automotive Gmbh Verfahren und Vorrichtung zum Bestimmen der elektrischen Ansteuerdauer eines Kraftstoffinjektors für eine Brennkraftmaschine
DE102014202136B4 (de) * 2013-09-19 2019-03-07 Continental Automotive Gmbh Verfahren und Vorrichtung zur Detektion von Betriebszuständen eines elektromagnetisch angetriebenen Gerätes
DE102014209587B4 (de) * 2014-05-20 2016-03-31 Continental Automotive Gmbh Charakterisierung eines Messkanals zum Vermessen eines Rückkopplungssignals, welches von einem sich in Betrieb befindenden Kraftstoff-Injektor generiert wird
DE102015207954B3 (de) * 2015-04-29 2016-06-16 Continental Automotive Gmbh Ermittlung eines Zeitpunkts eines vorbestimmten Öffnungszustandes eines Kraftstoffinjektors
JP6581420B2 (ja) * 2015-07-31 2019-09-25 日立オートモティブシステムズ株式会社 燃料噴射装置の制御装置
US10087866B2 (en) 2015-08-31 2018-10-02 Infineon Technologies Ag Detecting fuel injector timing with current sensing
DE102015219383B3 (de) * 2015-10-07 2017-02-09 Continental Automotive Gmbh Bestimmung eines Zeitpunktes, zu welchem sich ein Kraftstoffinjektor in einem vorbestimmten Zustand befindet
DE102015219673B4 (de) * 2015-10-12 2025-08-07 Schaeffler Technologies AG & Co. KG Erkennen eines vorbestimmten Öffnungszustandes eines einen Magnetspulenantrieb aufweisenden Kraftstoffinjektors
DE102016203182A1 (de) * 2016-02-29 2017-08-31 Robert Bosch Gmbh Verfahren zum Ermitteln eines Luftspalts eines Magnetventilinjektors
DE102016205268B3 (de) * 2016-03-31 2017-06-08 Continental Automotive Gmbh Ermitteln von Einspritzparameterwerten für Kraftstoffinjektoren
DE102020213169B3 (de) * 2020-10-19 2022-02-03 Vitesco Technologies GmbH Verfahren und Vorrichtung zur Bewegungsdiagnose eines Ankers eines Magnetventils
DE102021208757A1 (de) 2021-08-11 2023-02-16 Robert Bosch Gesellschaft mit beschränkter Haftung Verfahren zum Bestimmen einer charakteristischen Größe eines Magnetventils
DE102023210453A1 (de) * 2023-10-24 2025-04-24 Vitesco Technologies GmbH Verfahren, Steuerungsvorrichtung, Computerprogrammprodukt und Kraftstoff-Einspritzvorrichtung zum Betreiben eines Kraftstoffinjektors einer Brennkraftmaschine

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4142996A1 (de) * 1991-12-24 1993-07-01 Bosch Gmbh Robert Verfahren zum messen der mechanischen bewegung eines magnetventilankers, insbesondere von elektrisch gesteuerten einspritzanlagen
DE19736773A1 (de) * 1997-08-23 1999-02-25 Bosch Gmbh Robert Sensoranordnung zur Erfassung der Lage eines elektromagnetisch bewegten Ankers
DE10129153A1 (de) * 2001-06-16 2003-01-09 Festo Ag & Co Elektromagnetisches Ventil mit Haltestromabsenkung
US7430899B2 (en) * 2006-10-27 2008-10-07 Ford Motor Company Methods and systems for testing electromagnetically actuated fuel injectors
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
DE102007063479A1 (de) * 2007-12-20 2008-11-20 Siemens Ag Verfahren und Schaltungsanordnung zum Erzeugen eines eine Endlage eines Elektromagneten anzeigenden Signals
DE102009045307A1 (de) * 2009-10-02 2011-04-07 Robert Bosch Gmbh Verfahren und Steuergerät zum Betreiben eines Ventils

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10024264B2 (en) 2013-07-24 2018-07-17 Continental Automotive Gmbh Determination of the point in time of a predetermined open state of a fuel injector

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