EP0995024B1 - Procede et dispositif pour commander un consommateur electromagnetique - Google Patents

Procede et dispositif pour commander un consommateur electromagnetique Download PDF

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Publication number
EP0995024B1
EP0995024B1 EP99916804A EP99916804A EP0995024B1 EP 0995024 B1 EP0995024 B1 EP 0995024B1 EP 99916804 A EP99916804 A EP 99916804A EP 99916804 A EP99916804 A EP 99916804A EP 0995024 B1 EP0995024 B1 EP 0995024B1
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EP
European Patent Office
Prior art keywords
recharging
booster capacitor
voltage
value
injection
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP99916804A
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German (de)
English (en)
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EP0995024A1 (fr
Inventor
Klaus Scherrbacher
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
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Robert Bosch GmbH
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Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP0995024A1 publication Critical patent/EP0995024A1/fr
Application granted granted Critical
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Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/20—Output circuits, e.g. for controlling currents in command coils
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/20—Output circuits, e.g. for controlling currents in command coils
    • F02D2041/2003—Output circuits, e.g. for controlling currents in command coils using means for creating a boost voltage, i.e. generation or use of a voltage higher than the battery voltage, e.g. to speed up injector opening
    • F02D2041/2006—Output circuits, e.g. for controlling currents in command coils using means for creating a boost voltage, i.e. generation or use of a voltage higher than the battery voltage, e.g. to speed up injector opening by using a boost capacitor
    • 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
    • F02D2041/2034—Control of the current gradient
    • 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
    • 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
    • H01F7/1805—Circuit arrangements for holding the operation of electromagnets or for holding the armature in attracted position with reduced energising current
    • H01F7/1816—Circuit arrangements for holding the operation of electromagnets or for holding the armature in attracted position with reduced energising current making use of an energy accumulator

Definitions

  • the invention relates to a method and an apparatus for Control of at least one electromagnetic consumer, in particular a solenoid valve to control the Fuel injection into an internal combustion engine one with electronic switching means and at least one Booster capacitor equipped control circuit, with a first step, the voltage of the booster capacitor after each partial or total discharge the same again the opening speed of the Injector and thus influencing the injection time reloads the desired value.
  • a common rail fuel injection system the metering of the fuel mass for a cylinder over a Injector controlled.
  • the accuracy of the metering will determined, among other things, by how quickly that Injector opens.
  • the opening process of the Injector is accelerated by getting a high Voltage, fed from a booster capacitor, on the Injector there.
  • the voltage of the booster capacitor after its discharge or partial discharge at Injection process brought back to the desired value become. This recharging is done by an electric one Circuit and takes some time. If more than one Follow injections so closely in time that not for the complete recharge of the booster capacitor enough time remains, an undefined arises Voltage at the booster capacitor. Is the tension of the Booster capacitor not at the start of the injection process at the desired value, this results in different opening times of the injection valve and thus also different fuel masses. Through the different fuel masses worsen it Emission behavior and engine running.
  • the invention is also intended to Power loss when driving the electromagnetic Minimize consumption.
  • the above task is used in a generic method solved that at least the speed and the load of the Internal combustion engine are detected and the strength of the first Required recharge current and / or the required recharge time for the booster capacitor at least depending on the recorded speed and load value is regulated.
  • the above method is thereby advantageously trained that in the executed scheme the strength of the recharge current and in a corresponding manner also the Reload time in coordination with the reload current. With this step can be advantageously the Minimize power loss.
  • the normal reload time is not sufficient. If there is such a requirement, the method according to the invention regulates the strength of the recharge current and the recharge time depending on these additional requirements for the engine control.
  • Another measure is to measure the voltage of the Booster capacitor and in the regulation of the recharge current and the reload time depending on the measured voltage on Booster capacitor.
  • Additional training allows a correction of the calculated injection time with a the deviation of the measured voltage from the desired voltage value at the booster capacitor specifying correction value by adding in another Process step the calculated injection time with the Correction value with formation of a corrected injection time is corrected.
  • a control device for solving the above object at least one electromagnetic consumer, in particular a solenoid valve to control the Fuel injection into an internal combustion engine one with electronic switching means and at least one Booster capacitor equipped drive circuit that Reloading means, the voltage of the booster capacitor reloading to a desired value is thereby characterized that the reloading means functionally with Means for detecting at least the speed and the load of the Internal combustion engine are connected and control means have the strength of that for the desired Voltage value required recharge current and / or the required reloading time depends at least on the from the detection means detected speed value and the Regulate load value.
  • Figure 1 shows a block diagram of the device according to the invention.
  • Figures 2 to 4 show functional characteristics of three different ones Embodiments of the method according to the invention and the control device according to the invention at least one electromagnetic consumer, these three described below Embodiments can also be combined with one another can. It should also be noted that those from the above-mentioned patent application DE 195 39 071 known Power stage also in the control device according to the Device can be used.
  • Figure 1 is an electromagnetic consumer designated by way of example with 100. This is from one driven with 110 designated output stage. Furthermore is a charging circuit 120 is provided, the most important of which Element is a so-called booster capacitor 125 represents. Power amplifier 110 and charging circuit 120 can form a structural unit and accordingly the device described in DE 195 39 071 is, be trained.
  • Both the output stage 110 and the charging circuit 120 are connected to a supply voltage UB.
  • This is a motor vehicle preferably around the battery of the motor vehicle.
  • the Booster capacitor 125 is on the one hand with ground and on the other others connected to the power amplifier 110.
  • the electromagnetic consumer 100 optionally with the Voltage UC of the booster capacitor 125 or with the Supply voltage UB can be connected. This is with represented by a dash-dotted line.
  • the control unit 130 receives the output signals N of a speed sensor 150 and the signal L one Load specification 155 forwarded. Furthermore, the Control unit 130, the output signal ti and that Output signal OPAN fed to a motor controller 140. The engine controller 140 processes at least that Output signal L of the load specification 155.
  • the sensor 150 preferably detects the speed n of Internal combustion engine.
  • the load specification 155 delivers Signal L that the load of the internal combustion engine features. This can be a Interface with other control units in the Act motor vehicle. But it can also be provided be that the load size L is an internal Size of the motor controller 140 is. at spark-ignited internal combustion engines the load size L preferably around the position of the Throttle. With self-igniting internal combustion engines it is for example a die characterizing amount of fuel to be injected Size.
  • the Motor controller 140 Starting from at least the load L, the Motor controller 140 a drive signal ti that the Switching duration of the electromagnetic consumer certainly. This control period ti with which the output stage is applied determines the start of injection and that End of injection. It is shown in dashed lines that this Signal usually directly from the engine control 140 reaches the final stage 110.
  • This increased voltage UC is provided by the charging circuit 120.
  • the charging circuit 120 for example as a DC / DC converter, which increased a DC voltage into a DC voltage converted, be formed.
  • Booster capacitor 125 This is from the Charging circuit on one opposite the Supply voltage UB increased voltage UC charged. At the start of the control, the electromagnetic Consumer 100 with this increased voltage acted upon so that the consumer faster responds.
  • the charging process of the booster capacitor 125 is in the essentially through the recharge current ICN and the Reloading time tCN determined. These two sizes are specified by the control unit 130 and the Charging circuit 120 supplied.
  • the Control unit 130 among other things, the voltage UC that is on the booster capacitor 125 is present.
  • the signal OPAN evaluates that from the engine control provided. This signal OPAN gives the Request from the engine control, e.g. this Signal indicate that a switch from one Stratified charge operation takes place on a homogeneous operation should.
  • control unit 130 and the Charging circuit 120 are also used as recharging devices designated. How the different work Elements are described below with reference to FIGS. 2 to 4 described in more detail.
  • Figures 2-4 show functional features of three different embodiments of the inventive method and the inventive Device for controlling at least one electromagnetic consumer, these three
  • the exemplary embodiments described below also can be combined with each other. It is also too notice that from the above Patent application DE 195 39 071 also known final stage in the control device according to the invention can be used.
  • the voltage UC on the booster capacitor the speed n and the load L the Internal combustion engine detected.
  • the electronic Control unit EC controls depending on the detected Sizes UC, n and L the strength of the recharge current ICN, as well as the reload time tCN for reloading the Booster capacitor.
  • the voltage UC is before Injection process measured. To the power loss too can minimize, depending on the speed / load range Reload current ICN, can be changed. Accordingly the reload time tCN must also be changed. On Lowering the recharge current ICN means a Extension of reload time tCN, but one Reduction of power loss.
  • the speed n and determined the load L of the internal combustion engine OPAN requirements recorded by the engine control are in particular the requirement several injections at short intervals one after the other, e.g. when switching from Stratified charge in homogeneous operation with gasoline direct injection or with preliminary or Post-injections e.g. for catalyst regeneration. In this case, the normal reload time is not sufficient out. If there is such a requirement, the electronic control unit EC the recharge current Briefly increase the ICN and thus the reload time tCN shorten, so that the desired booster capacitor voltage UC sets and therefore an accurate Metering of the fuel is made possible. It is possible if a limited number of reloads is necessary, the charging circuit briefly overburden.
  • the measurement of the voltage UC before Injection is not mandatory if the Change in the recharge current ICN and the Reloading time tCN are coordinated.
  • Fig. 4 are the voltage UC on the booster capacitor that Speed n and the load value L of the internal combustion engine recorded and corresponding sizes of electronic Control unit EC supplied.
  • This forms one Correction value tik for correcting the calculated Injection time ti.
  • a correction element K links the calculated injection time ti and the correction value tik to form a corrected injection time ti *.
  • the correction means K part of the electronic control unit EC.
  • the Voltage of the booster capacitor to a desired one Reloaded value.
  • the voltage of the Booster capacitor after each partial or complete discharge of the same back onto the Opening speed of the injection valve and thus the desired value influencing the injection time recharged.
  • a second step the speed and the load of the Internal combustion engine detected. It is advantageous if additionally certain requirements of the engine control be recorded. This is for example a signal OPAN, which indicates that several Injections through the same solenoid valve in very short time intervals are required. Furthermore, the Voltage at the booster capacitor, especially before Injection process to be measured.
  • the strength of the ICN in the first step required recharge current and / or the required reload time tCN for the Booster capacitor at least depending on the im second step controlled operating state (LAST, speed) regulated.
  • a correction value (tik) is determined, which is a deviation of the measured Voltage from the desired voltage value on the booster capacitor when controlling the injectors considered.
  • a fifth Step a calculated injection time (ti) for the Injectors with the correction value (tik) under formation corrected injection time (ti *).

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)

Abstract

L'invention concerne un procédé et un dispositif pour commander au moins un consommateur électromagnétique, notamment une électrovanne, pour réguler l'injection de carburant dans un moteur à combustion interne au moyen d'un circuit de commande pourvu d'éléments de commutation électroniques et d'au moins un condensateur-amplificateur. Ce circuit de commande comprend des éléments de recharge (EC) qui rechargent le condensateur-amplificateur, après chaque décharge partielle ou totale de ce dernier, à une valeur de tension souhaitée, influençant la vitesse d'ouverture de la soupape d'injection et par conséquent le temps d'injection. L'invention est caractérisée en ce que les éléments de recharge (EC) sont reliés de façon fonctionnelle avec des éléments servant à détecter au moins le régime (n) et la charge (L) du moteur à combustion interne, et présentent des éléments de régulation (EC) qui régulent l'intensité du courant de recharge (ICN) requis pour obtenir la valeur de tension souhaitée, ainsi que la durée de recharge (tCN) au moins en fonction de la valeur de régime (n) et de la valeur de charge (L) détectées par lesdits éléments de détection.

Claims (14)

  1. Procédé pour commander au moins un consommateur électromagnétique, notamment une soupape magnétique, pour commander l'injection de carburant dans un moteur à combustion interne au moyen d'un circuit de commande équipé de moyens de commutation électroniques et au moins d'un condensateur "booster", comportant une première étape qui recharge la tension du condensateur "booster" à une valeur souhaitée,
    caractérisé en ce qu'
    une deuxième étape saisit, au moins la vitesse de rotation et la charge du moteur à combustion interne, et une troisième étape régule la force du courant de recharge nécessaire dans la première étape et/ou la durée nécessaire de recharge du condensateur "booster" au moins en fonction de la vitesse de rotation saisie et de la valeur de charge au cours de la deuxième étape.
  2. Procédé selon la revendication 1,
    caractérisé en ce que
    lors de la régulation dans la troisième étape, la force du courant de recharge et la durée de recharge sont réglées en cohérence l'une avec l'autre.
  3. Procédé selon la revendication 1 ou 2,
    caractérisé en ce que
    dans la deuxième étape, on saisit en outre des exigences définies relatives à la commande de moteur et nécessitant plusieurs injections par la même soupape magnétique à intervalles très courts, et dans la troisième étape, la force du courant de recharge et la durée de recharge sont régulées en fonction des exigences de la commande de moteur saisies en complément au cours de la deuxième étape.
  4. Procédé selon la revendication 3,
    caractérisé en ce que
    les exigences de la commande de moteur prises en compte en complément concernent en particulier la commutation entre charge stratifiée et fonctionnement homogène et pré- et/ou post-injection.
  5. Procédé selon l'une quelconque des revendications 1 à 4,
    caractérisé en ce que
    dans la deuxième étape, la tension sur le condensateur "booster" est en outre mesurée avant le processus d'injection.
  6. Procédé selon la revendication 5,
    caractérisé en ce que
    la force du courant de recharge et la durée de recharge sont en outre régulées dans la troisième étape en fonction de la tension mesurée sur le condensateur "booster".
  7. Procédé selon la revendication 5,
    caractérisé en ce qu'
    une quatrième étape recherche, à partir de la tension mesurée dans une deuxième étape sur le condensateur "booster", une valeur de correction (ti_kor) indiquant, pour le temps d'injection, un écart de la tension mesurée de la valeur de tension souhaitée sur le condensateur "booster", et une cinquième étape corrige un temps d'injection (ti) calculé avec la valeur de correction (ti_kor) en formant un temps d'injection (ti*) corrigé.
  8. Dispositif pour commander au moins un consommateur électromagnétique, notamment une soupape magnétique, pour commander l'injection de carburant dans un moteur à combustion interne, à l'aide de moyens de commutation électroniques et d'au moins un condensateur "booster", qui présente les moyens de recharge (EC) rechargeant la tension du condensateur "booster" à une valeur souhaitée,
    caractérisé en ce que
    les moyens de recharge (EC) sont fonctionnellement reliés à des moyens de saisie d'au moins la vitesse de rotation (n) et la charge (L) du moteur à combustion interne et présentent des moyens de régulation (EC) régulant la force du courant de recharge (ICN) nécessaire pour la valeur de tension souhaitée et la durée de recharge (tCN) nécessaire au moins en fonction de la vitesse de rotation (n) et de la valeur (L) de charge saisies par les moyens de saisie.
  9. Dispositif selon la revendication 8,
    caractérisé en ce que
    les moyens de régulation (EC) règlent la force du courant de recharge (ICN) nécessaire et la durée de recharge (tCN) nécessaire pour atteindre la valeur de tension souhaitée en cohérence l'une avec l'autre.
  10. Dispositif selon la revendication 8 ou 9,
    caractérisé en ce que
    les moyens de recharge (EC) sont en outre fonctionnellement reliés à des moyens de saisies de certaines exigences de la commande de moteur, ces exigences rendant nécessaire plusieurs injections par la même soupape magnétique à intervalles très courts, et les moyens de régulation (EC) régulent, à la valeur de tension souhaitée, la force du courant de recharge (ICN) nécessaire à la recharge du condensateur "booster" et la durée de recharge (tCN) nécessaire en fonction des exigences de la commande de moteur saisies par les moyens de saisie.
  11. Dispositif selon la revendication 10,
    caractérisé en ce que
    les exigences de la commande de moteur prises en compte en complément par les moyens de régulation (EC) et saisies par les moyens de saisie concernent en particulier la commutation entre charge stratifiée et fonctionnement homogène et pré- et/ou post-injection par la soupape magnétique.
  12. Dispositif selon l'une quelconque des revendications 8 à 11,
    caractérisé en ce que
    les moyens de saisie mesurent en outre une tension (UC) appliquée au condensateur "booster" avant le processus d'injection et transmettent aux moyens de régulation (EC) une grandeur correspondant à la tension mesurée.
  13. Dispositif selon la revendication 12,
    caractérisé en ce que
    les moyens de régulation (EC) régulent le courant de recharge (ICN) et la durée de recharge (tCN) du condensateur "booster" selon, en plus, la grandeur indiquant la tension (UC) mesurée sur le condensateur "booster" avant le processus d'injection.
  14. Dispositif selon la revendication 10,
    caractérisé en ce que
    des moyens de correction (K) sont prévus pour, à partir de la grandeur indiquant la tension (UC) mesurée sur le condensateur "booster" avant le processus d'injection, former une valeur de correction (ti_kor) indiquant, pour un temps d'injection, un écart de la tension mesurée de la valeur souhaitée de tension sur le condensateur "booster", et corriger le temps d'injection (ti) calculé avec la valeur de correction (ti_kor) en formant un temps (ti*) d'injection corrigé.
EP99916804A 1998-03-25 1999-03-19 Procede et dispositif pour commander un consommateur electromagnetique Expired - Lifetime EP0995024B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19813138 1998-03-25
DE19813138A DE19813138A1 (de) 1998-03-25 1998-03-25 Verfahren und Vorrichtung zur Ansteuerung eines elektromagnetischen Verbrauchers
PCT/DE1999/000776 WO1999049195A1 (fr) 1998-03-25 1999-03-19 Procede et dispositif pour commander un consommateur electromagnetique

Publications (2)

Publication Number Publication Date
EP0995024A1 EP0995024A1 (fr) 2000-04-26
EP0995024B1 true EP0995024B1 (fr) 2003-10-22

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EP99916804A Expired - Lifetime EP0995024B1 (fr) 1998-03-25 1999-03-19 Procede et dispositif pour commander un consommateur electromagnetique

Country Status (5)

Country Link
US (1) US6360725B1 (fr)
EP (1) EP0995024B1 (fr)
JP (1) JP4531143B2 (fr)
DE (2) DE19813138A1 (fr)
WO (1) WO1999049195A1 (fr)

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JP5838074B2 (ja) * 2011-11-08 2015-12-24 日立オートモティブシステムズ株式会社 内燃機関の燃料噴射制御装置
US20130192566A1 (en) * 2012-01-27 2013-08-01 Bahman Gozloo Control system having configurable auxiliary power module
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US9989947B2 (en) * 2013-08-20 2018-06-05 Infineon Technologies Ag Driver circuit for driving electromagnetic actuators
DE102013220613B4 (de) * 2013-10-11 2024-03-14 Vitesco Technologies GmbH Verfahren und Computerprogramm zum Ansteuern eines Kraftstoffinjektors
US10087866B2 (en) 2015-08-31 2018-10-02 Infineon Technologies Ag Detecting fuel injector timing with current sensing
US10184860B2 (en) 2016-04-08 2019-01-22 Infineon Technologies Ag Control system for power train control
DE102022211462A1 (de) 2022-10-28 2024-05-08 Robert Bosch Gesellschaft mit beschränkter Haftung Verfahren zur Adaption eines Kondensatormodells für einen Ausgangskondensator eines Gleichspannungswandlers, Kraftstoffeinspritzsystem, Recheneinheit und Computerprogramm
DE102022211461A1 (de) 2022-10-28 2024-05-08 Robert Bosch Gesellschaft mit beschränkter Haftung Verfahren zur Prädiktion einer Ausgangsspannung an einem Gleichspannungswandler, Kraftstoffeinspritzsystem, Recheneinheit und Computerprogramm

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EP0995024A1 (fr) 2000-04-26
DE59907432D1 (de) 2003-11-27
WO1999049195A1 (fr) 1999-09-30
JP4531143B2 (ja) 2010-08-25
DE19813138A1 (de) 1999-09-30
JP2002500720A (ja) 2002-01-08
US6360725B1 (en) 2002-03-26

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