EP0854281B1 - Dispositif de pilotage d'au moins un consommateur électromagnetique - Google Patents

Dispositif de pilotage d'au moins un consommateur électromagnetique Download PDF

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Publication number
EP0854281B1
EP0854281B1 EP97117597A EP97117597A EP0854281B1 EP 0854281 B1 EP0854281 B1 EP 0854281B1 EP 97117597 A EP97117597 A EP 97117597A EP 97117597 A EP97117597 A EP 97117597A EP 0854281 B1 EP0854281 B1 EP 0854281B1
Authority
EP
European Patent Office
Prior art keywords
injection
partial
current
consumer
capacitor
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
EP97117597A
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German (de)
English (en)
Other versions
EP0854281A3 (fr
EP0854281A2 (fr
Inventor
Rainer Burkel
Holger Rapp
Andreas Werner
Bernhard Valouch
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
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP0854281A2 publication Critical patent/EP0854281A2/fr
Publication of EP0854281A3 publication Critical patent/EP0854281A3/fr
Application granted granted Critical
Publication of EP0854281B1 publication Critical patent/EP0854281B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F02D41/30—Controlling fuel injection
    • F02D41/3005—Details not otherwise provided for
    • 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
    • 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
    • F02D2041/2003—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
    • F02D2041/2013—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 voltage source
    • 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
    • F02D2041/2068—Output circuits, e.g. for controlling currents in command coils characterised by the circuit design or special circuit elements
    • F02D2041/2075—Type of transistors or particular use thereof

Definitions

  • the invention relates to a method and a device to control at least one electromagnetic consumer.
  • a device for controlling at least one electromagnetic consumer is known from EP-A-0548915.
  • the injection is at least a first and a second Split injection.
  • the one in a storage medium stored charge is at the beginning of the control in the Reloaded consumers, being in the storage means at the first Partial injection remains a partial charge.
  • the storage medium will discharge until the voltage of the supply voltage has reached.
  • the charge remaining in the storage medium cannot can be used for quick charging of the consumer because the Voltage of the capacitor has the same value as that Voltage of the supply voltage.
  • This facility is therefore in the second partial injection, an accelerated switch-on like not possible for the first partial injection.
  • With several Partial injections is only a partial injection accelerated switching of the consumer achievable.
  • a device for controlling at least one electromagnetic Consumer is known from DE-OS 44 13 240.
  • the next activation is the stored energy reloaded into the consumer.
  • the distance between the two partial injections are not chosen to be smaller, than the time it takes to turn the capacitor on charge sufficiently high voltage at which the subsequent Switching on takes place sufficiently quickly.
  • the object of the invention is based on a device to control an electromagnetic consumer shorten the distance between two partial injections, with the second partial injection the switch-on process should be accelerated.
  • the device according to the invention with the features of the independent Claims has the advantage that the distance chosen between the two partial injections very short can be, at the same time a very fast switching process is possible with all partial injections.
  • the device according to the invention is based on the Embodiments illustrated in the drawing. 1 shows a circuit arrangement of the invention Device, Figure 2 and 3 different over time applied signals.
  • the device according to the invention is preferred for internal combustion engines, especially with self-igniting internal combustion engines, used.
  • This electromagnetic Valves are referred to below as consumers designated.
  • the invention is not limited to this application, it can be used wherever Fast switching electromagnetic consumers are required become.
  • the opening and Closing time of the solenoid valve When used in internal combustion engines, in particular self-igniting internal combustion engines, the opening and Closing time of the solenoid valve the start of injection or the end of injection of fuel in the cylinder.
  • Figure 1 are the most important elements of the invention Facility shown.
  • it is a four-cylinder internal combustion engine. Every consumer has an injection valve and a cylinder of the internal combustion engine for each injection valve assigned. If the number of cylinders of the internal combustion engine deviates valves, switching devices and diodes are in a corresponding Number to be provided.
  • connection of the consumers 100 to 103 are over a switching means 115 and a diode 110 with a voltage supply 105 in connection.
  • the diode 110 is arranged so that it with its anode the positive pole and with its cathode with the switching means 115 communicates.
  • the switching means 115 is concerned is preferably a field effect transistor.
  • the second connection for consumers 100 to 103 stands over a second switching means 120, 121, 122 and 123 in connection with a resistance means 125.
  • the switching means 120 to 123 are also preferably around field effect transistors.
  • the switching means 120 to 123 are used as low-side switches and the switching means 115 referred to as a high-side switch.
  • the second connection of the resistance means 125 is connected to the second connection the power supply in connection.
  • Each consumer 100 to 103 has a diode 130, 131, 132 and 133 assigned. Those of the diodes are with the Connection point between consumer and low-side switch in contact.
  • the cathode connection is with a capacitor 145 and a further switching means 140 in connection.
  • the second connection of the switching means 140 is with the first Connections of consumers 100 to 103 in contact.
  • Switching means 140 are also preferably a field effect transistor. This switching means 140 will also known as a booster switch.
  • the second connection capacitor 145 is also connected to the second terminal the supply voltage 105 in connection.
  • the high-side switch 115 is operated by a control unit 160 with a control signal AH.
  • the switching device 120 is sent by the control unit 160 with a control signal AL1, the switching means 121 with a drive signal AL2, the Switching means 122 with a control signal AL3, the switching means 123 with a control signal AL4 and the switching means 140 applied with a control signal AC.
  • Diode 150 switched between the second connection of the voltage supply 105 and the connection point between the switching means 115 and the first connections of consumers 100 to 103 is one Diode 150 switched.
  • the anode of the diode is included connected to the second connection of the voltage supply 105.
  • Resistor 125 can be used by the consumer flowing current can be determined.
  • a current measurement is over the current measuring resistor 125 only possible if one of the Switching means 120 to 123 is closed.
  • the current measuring resistor is also arranged elsewhere become.
  • the second connection of the capacitor 145 with the connection point between the current measuring means 125 and the switching means 120 to 123 are connected.
  • a current measurement is also in the blocked state Low-side switch possible.
  • the current measuring means between the power supply and the high-side switch or between the high-side switch and the Be arranged consumers.
  • FIG. 2a the drive signal AC for the booster transistor 140 applied.
  • the control signal is shown in FIG. 2b AH applied for the high-side switch 115.
  • figure 2c shows the control signal AL of one of the low-side switches.
  • Figure 2d is that of the consumer flowing current I and in Figure 2e that applied to capacitor 145 Voltage UC plotted against time.
  • a control that corresponds to a metering cycle without Pre-injection shown for a solenoid valve.
  • phase 0 before triggering the consumer the output stage is switched off.
  • the control signals AC, AH and AL are at low potential. This means, that the high-side switch 115, the low-side switch 120 to 123 and the booster switch 140 block the current flow. No electricity flows through the consumers.
  • the capacitor 145 is charged to its maximum voltage UC. This takes For example, a value of approximately 80 volts, whereas the Voltage of the power supply assumes a value of approx. 12 V.
  • the low-side switch In the first phase at the beginning of the control, which operates as a booster the low-side switch is activated, which is associated with the consumer, the fuel should measure. This means that from phase 1 the Signal AL assumes a high level. At the same time the line AC issued a high signal, the switch 140 controlled. The high-side switch 115 is not activated, this continues to block. This control of Switching means causes the capacitor 145 through the booster switch 140, the corresponding consumer, the Consumer assigned low-side switch and the current measuring means 125 a current flows. In this phase the Current I very much due to the high voltage at the consumer quickly. Phase 1 ends when the capacitor 145 applied voltage falls below a certain value U2.
  • the inrush current from the high-side switch 115 taken over and the booster deactivated.
  • the control signal for the booster switch 140 is withdrawn, so that switch 140 locks.
  • the control signals AH and AL for the high-side switch 115 and the consumer associated low-side switches are set to high levels set so that these switches release the current flow. Consequently a current flows from the voltage supply 105 via the Diode 110, the high-side switch 115, the consumer, the corresponding low-side switch, the current measuring resistor 125 back to voltage source 105.
  • the current measuring resistor 125 By touching the high-side switch can the current by means of the current measuring resistor 125 is recorded to a predeterminable value for the starting current IA can be regulated. That is, when reached of the target current IA for the starting current becomes the high-side switch 115 controlled so that it locks. When falling short another threshold is released again.
  • the second phase ends when the control unit 160 does so End of the tightening phase.
  • This can e.g. the Be the case when a switching point detection recognizes that the solenoid valve armature has reached its new end position. Recognizes the switching point detection is not within a given time that the solenoid valve armature reaches its new end position has reached, then an error is recognized.
  • the third phase also known as the first quick erase the control signal for the corresponding Low side switch withdrawn.
  • This causes a Electricity from the respective consumer through the consumer associated diode 130 to 133 in capacitor 145 flows and the energy stored in the consumer in the Capacitor 145 is charged.
  • the high-side switch 115 is controlled in the illustrated embodiment so that it stays closed.
  • the sink In this phase the sinks Current from the starting current IA to the holding current IH. simultaneously the voltage across capacitor 145 rises to a value U3, but which is significantly below the value U1 lies.
  • the third phase ends when the setpoint IH for the holding current is reached.
  • the transition from the starting current IA on the holding current IH is released energy stored in the capacitor. It is particularly advantageous here that the transition from the pull-in current to the holding current done quickly due to the quick deletion.
  • the third phase is followed by the fourth phase, the is also referred to as holding current control.
  • the control signal remains for the Low-side switch at its high level, that is Low-side switches assigned to consumers remain closed.
  • the high-side switch 115 By opening and closing the high-side switch 115 the current that flows through the consumer is transferred to the Setpoint for the holding current adjusted.
  • locked High-side switch 115 acts as a freewheeling circuit. The current flows from the consumer through the low-side switch, the resistor 125 and the free-wheeling diode 150.
  • Phase 4 has ended, when the injection process is completed.
  • the corresponding low-side switch turned off and the high-side switch 115 turned on.
  • the current falls through the consumer flows, also quickly to zero from.
  • the voltage U increases across the capacitor 145 is applied to a smaller value than in the third Phase.
  • the setpoint for the current I goes from a high to a low value.
  • the energy released is transferred to the capacitor 145 transhipped. Quick erasure occurs during these phases. This causes the current to quickly reach its new set point.
  • the power amplifier is inactive, that is, there is no fuel metering.
  • the high-side switch 115 by the control signal AH back to its conductive state brought.
  • a current flow is initialised in one of the consumers.
  • the current flows via the diode 110, for example Switch 115, the consumer 100, the switching means 120 and the current measuring means 125 back into the voltage source.
  • the low side switch controlled at Reaching a setpoint for the current that is chosen is that the solenoid valve is not yet responding, the low side switch controlled so that it opens. This causes again a quick erase for the current path consisting of the consumer, one of the diodes 130 to 133 and the capacitor 145. As a result, the one present at capacitor 145 increases Tension.
  • the low-side switch 120 is reactivated. This process is repeated until the voltage across capacitor 145 gradually reached the value U1 again. This process is called rechargen.
  • phase 8 in which all control signals withdrawn and all switches in their locked state to be brought. This phase corresponds to phase 0.
  • An injection is preferably made into a pre-injection, which is before the main injection, and the Main injection split.
  • Post-injection may also be used after the main injection. Also it is possible to use the pre-injection, the main injection and / or the post-injection into further partial injections to divide.
  • Figure 3 shows a metering cycle with two partial injection is.
  • the pre-injection takes place and between the times t3 and t5 is the main injection.
  • the pre-injection is usually shorter than the main injection.
  • the distance between pre-injection and main injection the is called the distance between t2 and t3, should be as short as possible his. As a rule, this distance is shorter than the time period between t5 and t6 used to recharge the capacitor 145 is required.
  • the triggering for the pilot injection begins at time t1.
  • the Switch as controlled in phase 1.
  • the voltage U across the capacitor falls to the value U4, which is clearly above zero.
  • This means the storage medium is pre-injected only a partial load removed. Part of the cargo remains in the storage medium.
  • a current flows with it the value I1.
  • the switching means controlled as in phase 2.
  • the tension remains at value U4 and current I1 flows through the Consumer.
  • the pilot injection ends at time t2.
  • This has to Consequence that the current I drops to zero.
  • the voltage U increases the voltage U to the value U1. This is because the energy stored in the consumer in the capacitor is reloaded.
  • the partial charge remaining in capacitor 145 together with that which is released when the pre-injection is ended Charge is sufficient that the voltage U across the capacitor increases to the value U1. This charge on the capacitor sufficient for accelerated switching on of the consumer at the main injection.
  • the activation for the main injection begins at time t3. From this point on, the control takes place accordingly as described in Figure 2. Between the times t3 and t4 become the switches corresponding to phases 1 and 2 controlled. From time t4, the current I is on the holding current is reduced in accordance with phases 3 and 4. The voltage is between times t3 and t5 to the value U2, which is only slightly above zero.
  • Capacitor 145 is switched on by the consumer Voltage U3 charged.
  • the procedure according to the invention is such that when reloading in the phase 7 of the capacitor 145 to a much higher Voltage U3 is charged as in the embodiment according to Figure 2.
  • the value of the voltage U3 is chosen so that after the capacitor 145 is discharged during the pre-injection energy is still stored in capacitor 145.
  • the voltage U3 is selected so that together with the Switch off at the end of the pre-injection from the consumer energy transferred to the capacitor achieves voltage U1 becomes.
  • the one after the end of the pre-injection in the condenser contained energy is sufficient for accelerated switching on at the main injection.
  • the procedure according to the invention was based on the example of Pre-injection and the main injection described.
  • the Procedure is not based on this embodiment limited, it can always be used when two or several injections take place in quick succession.
  • a pre-injection, a main injection and a post-injection takes place.
  • the device according to the invention was based on the example of a Internal combustion engine shown with four cylinders.
  • the method is also on internal combustion engines with a different number of cylinders transferable. There is a corresponding number for this of consumers, switching devices and other elements. It can also be provided that the consumer in a larger number of groups is divided. This is particularly useful with higher numbers of cylinders.

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

Claims (4)

  1. Procédé de commande d'au moins un consommateur électromagnétique en forme d'électrovanne pour commander l'injection de carburant dans un moteur à combustion interne selon lequel on divise l'injection en au moins une première injection partielle et une seconde injection partielle, la charge accumulée dans un moyen de stockage (145) étant transférée au début de la commande (t1) dans le consommateur (100) et le moyen de stockage (145) conserve une charge partielle lors de la première injection partielle,
    caractérisé en ce que
    la charge partielle restante est dimensionnée pour qu'à l'injection partielle suivante, elle suffise pour une mise en oeuvre accélérée.
  2. Procédé selon la revendication 1,
    caractérisé en ce que
    la charge partielle restante dans le moyen de stockage avec la charge libérée à la fin de la première injection partielle suffít pour une mise en oeuvre accélérée de l'injection partielle suivante.
  3. Procédé selon l'une quelconque des revendications précédentes,
    caractérisé en ce que
    le moyen de stockage est chargé avec une charge du consommateur.
  4. Dispositif de commande d'au moins un consommateur électromagnétique en forme d'électrovanne (100), notamment d'une électrovanne de commande de l'injection de carburant dans un moteur à combustion interne, l'injection étant divisée en au moins une première et une seconde injection partielles, comprenant des moyens (140) qui transfèrent la charge stockée dans un moyen de stockage (145) au début de la commande (1) vers le consommateur (100), le moyen de stockage (145) conservant une charge partielle lors de la première injection partielle,
    caractérisé en ce que
    la charge partielle restante est dimensionnée de façon que lors de l'injection partielle suivante elle suffise pour une mise en oeuvre accélérée.
EP97117597A 1997-01-17 1997-10-10 Dispositif de pilotage d'au moins un consommateur électromagnetique Expired - Lifetime EP0854281B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19701553A DE19701553A1 (de) 1997-01-17 1997-01-17 Verfahren und Vorrichtung zur Ansteuerung wenigstens eines elektromagnetischen Verbrauchers
DE19701553 1997-01-17

Publications (3)

Publication Number Publication Date
EP0854281A2 EP0854281A2 (fr) 1998-07-22
EP0854281A3 EP0854281A3 (fr) 1998-08-05
EP0854281B1 true EP0854281B1 (fr) 2003-01-08

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP97117597A Expired - Lifetime EP0854281B1 (fr) 1997-01-17 1997-10-10 Dispositif de pilotage d'au moins un consommateur électromagnetique

Country Status (2)

Country Link
EP (1) EP0854281B1 (fr)
DE (2) DE19701553A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19813138A1 (de) 1998-03-25 1999-09-30 Bosch Gmbh Robert Verfahren und Vorrichtung zur Ansteuerung eines elektromagnetischen Verbrauchers
DE10140091A1 (de) * 2001-08-16 2003-02-27 Bosch Gmbh Robert Verfahren und System zum Beinflussen der Einspritzmenge einer Kraftstoffzumesseinheit
JP4148127B2 (ja) * 2003-12-12 2008-09-10 株式会社デンソー 燃料噴射装置
DE102009027340A1 (de) * 2009-06-30 2011-01-05 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH Ansteuerschaltung für mehrere induktive Lasten
US10371082B1 (en) * 2018-01-22 2019-08-06 Delphi Technologies Ip Limited Fuel injector control including state selection based on a control signal characteristic

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1251259B (it) * 1991-12-23 1995-05-05 Elasis Sistema Ricerca Fiat Circuito di comando di carichi prevalentemente induttivi, in particolare elettroiniettori.

Also Published As

Publication number Publication date
EP0854281A3 (fr) 1998-08-05
EP0854281A2 (fr) 1998-07-22
DE19701553A1 (de) 1998-07-23
DE59709097D1 (de) 2003-02-13

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