EP1305509B1 - Ensemble circuit electronique et procede associe, servant a commander un actionneur sous la forme d'une soupape ou d'un injecteur - Google Patents

Ensemble circuit electronique et procede associe, servant a commander un actionneur sous la forme d'une soupape ou d'un injecteur Download PDF

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Publication number
EP1305509B1
EP1305509B1 EP01955255A EP01955255A EP1305509B1 EP 1305509 B1 EP1305509 B1 EP 1305509B1 EP 01955255 A EP01955255 A EP 01955255A EP 01955255 A EP01955255 A EP 01955255A EP 1305509 B1 EP1305509 B1 EP 1305509B1
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EP
European Patent Office
Prior art keywords
driver circuit
input
resetting
reset
circuit
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
EP01955255A
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German (de)
English (en)
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EP1305509A1 (fr
Inventor
Achim Przymusinski
Andreas Schiergl
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.)
Siemens AG
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Siemens AG
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Publication of EP1305509A1 publication Critical patent/EP1305509A1/fr
Application granted granted Critical
Publication of EP1305509B1 publication Critical patent/EP1305509B1/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
    • F02D41/24—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means
    • F02D41/26—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using computer, e.g. microprocessor
    • 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
    • F02D41/22—Safety or indicating devices for abnormal conditions
    • 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
    • H01F7/1877—Circuit arrangements for obtaining desired operating characteristics, e.g. for slow operation, for sequential energisation of windings, for high-speed energisation of windings controlling a plurality of loads

Definitions

  • the invention relates to an electronic circuit arrangement for controlling at least one actuator, in particular for controlling the valves and / or the injectors of a Injection system of an internal combustion engine, according to the preamble of claim 1 and an associated method according to Claim 10.
  • Conventional injection systems for internal combustion engines for Motor vehicles usually have injectors that the Fuel in each case into a combustion chamber of the internal combustion engine inject, wherein the control of the injectors by a electronic driver circuit takes place.
  • volume flow control valves VCV - Volume Control Valve
  • PCV - Pressure Control Valve a volume flow control valve
  • the desired operating parameters for the actuators prescribes and, for example, the volume flow, the fuel pressure and specifies the injection times.
  • known injection systems have a monitoring unit on, the output side, each with a reset input the driver circuit is connected and the driver circuits when a malfunction occurs in a given can bring safe condition.
  • the monitoring unit is in this case for example via a data bus with the microcontroller connected to detect a malfunction.
  • the driver circuits be brought into a safe state in any case, if the driver of the motor vehicle disconnects the ignition.
  • the Microcontroller is therefore the input side with the ignition switch connected and controls the monitoring unit when switching off the ignition so that the driver circuits in be brought to the safe state.
  • a disadvantage of the known circuit arrangement described above is the fact that both the microcontroller and the monitoring unit are working properly need to turn the driver circuits into a safe one To bring state. In case of malfunction of the microcontroller or the monitoring unit is thus in danger of that the driver no longer turns off the driver circuits can bring the ignition to a safe state.
  • From DE 196 05 606 A1 is a device for resetting a computing element known in which the computing element a Part of an on and off switchable control device is.
  • the Device has a circuit arrangement that the computing element at least one reset signal, the Circuit arrangement to a at turning off the control device not switched off supply voltage connected is.
  • the circuit arrangement can the computing element the at least one reset signal both undelayed and time delay.
  • DE 39 25 881 A1 a Method and a device for control or regulation the engine power of an internal combustion engine of a motor vehicle known.
  • the invention is therefore the object of the above described known circuitry to Improve that the driver circuits even in case of malfunction the microcontroller or the monitoring unit Reliable can be brought to a safe state.
  • the object is, starting from the above known circuit arrangement according to the preamble of the claim 1, by the characterizing features of claim 1 or - with regard to a corresponding procedure - by the features of claim 10 solved.
  • the invention includes the general technical teaching, in addition for controlling the reset input of the driver circuits through the microcontroller or the monitoring unit bypassing the microcontroller and the monitoring unit a signal path from the ignition switch to the Provide reset input of the driver circuits, so that the shutdown of the driver circuits even with a malfunction the microcontroller or the monitoring unit sure it works.
  • the reset input of the driver circuit s a logic circuit upstream, the input side to a with preferably a microcontroller and a monitoring unit existing control unit and the other bypassing the control unit with the signal input to Connection of the ignition switch is connected, with the reset input the driver circuit is activated when on a Input of the logic circuit a corresponding activation signal is applied.
  • the reset of the driver circuit in the safe state thus takes place in this variant of the invention optionally by the control unit or directly by the ignition switch.
  • the reset input is the driver circuit high-active, making the driver circuit in a safe State is brought when at the reset input of the driver circuit a high level is applied.
  • the reset input of the driver circuit upstream logic circuit preferably an OR member.
  • the reset input the driver circuit, however, low-active, so that the Driver circuit is brought into a safe state, when at the reset input of the driver circuit, a low level is applied.
  • it indicates the reset input the driver circuit upstream logic circuit preferably on and off.
  • the Control unit bypassing signal path between the signal input for causing the shutdown of the driver circuits Switching element (e.g., ignition switch) and the reset input the driver circuit is arranged a delay element, wherein the delay time of the delay element preferably is greater than that for resetting the driver circuits required by the control unit processing time.
  • the delay time of the delay element is Therefore, preferably more than 700 ms, which is usually sufficient.
  • the control unit for controlling the Driver circuits from a microcontroller and a with the monitoring unit connected to the microcontroller, wherein the microcontroller on the output side via a control line is connected to the control input of the driver circuit, whereas the monitoring unit on the output side via a Reset line is connected to the driver circuit.
  • the microcontroller outputs the data (e.g., fuel pressure, Volume flow, injection duration), with which the driver circuits the actuators (e.g. Pressure control valve, injectors) controls, whereas the Monitoring unit monitors the operation of the microcontroller and the driver circuits in the event of a malfunction into a safe state.
  • the data e.g., fuel pressure, Volume flow, injection duration
  • the actuators e.g. Pressure control valve, injectors
  • the microcontroller and the monitoring unit are in this Variant of the invention preferably via a data bus connected to each other, wherein the data bus is preferably a SPI bus (SPI - serial peripheral interface) is.
  • SPI serial peripheral interface
  • the invention variant described above with a delay element in the signal path surrounding the control unit offers the advantage that the functionality of the shutdown the driver circuits by the control unit in Normal operation can be checked.
  • Verification procedure is first determined whether the ignition switch was opened, because then anyway Shutdown after expiry of the specified delay time he follows.
  • the control unit then activates the reset line for a driver circuit, whereas the reset lines remain unaffected by the other driver circuit.
  • the internal combustion engine must function properly nevertheless within the delay time with a speed drop react, because, for example, the flow control valve has been closed. A detection of a corresponding speed drop despite switching off only a single driver circuit shows that the associated reset line works properly.
  • the electronic circuit arrangement shown in Figure 1 serves to control the actuators of an injection system for an internal combustion engine.
  • the circuit arrangement has a driver circuit 1 on the output side, on the one hand, a pressure regulating valve (PCV Pressure Control Valve) and on the other a flow control valve (VCV - Volume Control Valve) controls, both the flow control valve and the pressure control valve not shown for simplicity.
  • PCV Pressure Control Valve PCV Pressure Control Valve
  • VCV - Volume Control Valve flow control valve
  • the circuit arrangement according to the invention has a Driver circuit 2, the four injectors I1 - I4 of the injection system controls and thus the injection timing and determines the injection duration.
  • the master microcontroller 3 On the input side is the master microcontroller 3 with a Ignition switch KL15 connected, so that the injection process at Switching off the ignition and the related opening of the ignition switch KL15 is interrupted.
  • the master microcontroller detects the master microcontroller. 3 this in normal operation and disables the control lines Control Line 1 and Control Line 2. This leads to shutdown the injection.
  • the master microcontroller has 3 the possibility of a monitoring unit 4 via an interrupt line NMI (NMI - non maskable interrupt) that two reset lines enable DISABLE1 and DISABLE2 should be.
  • NMI NMI - non maskable interrupt
  • the control of the driver circuits 1, 2 in the safe State is thus not only by the master microcontroller 3, but also by the monitoring unit 4 of the type M37477, with the master microcontroller 3 on the one hand via a data bus SPI (SPI - serial peripheral interface) and the other via the interrupt line NMI (NMI - non maskable interrupt) is connected.
  • the interrupt line NMI allows the master microcontroller 3, the Monitoring unit 4 to signal that the injection process must be interrupted.
  • the Injection process also interrupted when the monitoring unit 4 based on the data transmitted via the data bus SPI detects that a malfunction of the master microcontroller 3 is present.
  • the monitoring unit 4 via the Reset line DISABLE2 a reset signal to the corresponding Reset input Reset the driver circuit 2, leaving this is brought to a safe state in which no Fuel is injected as all injectors I1-I4 shut down.
  • the reset line DISABLE2 between the monitoring unit 4 and the driver circuit 2 is via a Pull-down resistor 5 connected to ground to allow the reset line DISABLE2 during an initialization process of the Monitoring unit 4 and a resulting high-impedance State at the output of the monitoring unit 4 is a low level accepts.
  • the monitoring unit 4 in the two above described cases via the reset line DISABLE1 a reset signal, which via an inverter 6 and an AND gate 7 to the low-active reset input of the driver circuit 1 is supplied.
  • a reset signal which via an inverter 6 and an AND gate 7 to the low-active reset input of the driver circuit 1 is supplied.
  • To reset the driver circuit 1 gives the monitoring unit 4 via the reset line DISABLE1 so a high level off, so that at the output of the inverter 6 a low level appears, which is at the output of the AND gate 7 independent of the signal level on the other Input of the AND gate 7 to a low level and thus to a Reset the driver circuit 1 leads.
  • the reset line DISABLE1 is between the monitoring unit 4 and the inverter 6 via a pull-up resistor 8 with a supply voltage VCC connected to during an initialization process the monitoring unit 4 and a resulting High-impedance state at the output of the monitoring unit 4 a defined high level on the reset line To generate DISABLE1.
  • the illustrated circuit arrangement according to the invention also allows a direct penetration of the ignition switch KL15 to the driver circuits 1.
  • Tv 800 ms
  • other delay times T v ⁇ 700 ms can be used.
  • Opening of the ignition switch KL15 thus appears at the input of the delay element 10 immediately a low level, which is passed to the end of the predetermined delay time to the AND gate 7 and thus also to the reset input of the driver circuit 1. Opening of the ignition switch KL15 thus results in a complete malfunction of the master microcontroller 3 or the monitoring unit 4 to a reset of the driver circuits 1 in a safe state.
  • the invention shown in Figure 1 allows Circuitry a review of the proper Reset the driver circuit 1 or 2 by the monitoring unit 4, without interrupting normal operation must be, as shown in the figure 2 Flowchart shows.
  • the review of the orderly Reset is made only when the ignition switch KL15 is opened. It is therefore in the first First step waited until the ignition switch KL15 is opened. Subsequently, the monitoring unit 4 the reset signal DISABLE1 to low and the reset signal DISABLE2 high, which with correct function of the circuit arrangement to a reset of the driver circuit 2, not however, leads to a reset of the driver circuit 1.
  • the speed n 2 of the internal combustion engine is measured again to detect the response of the internal combustion engine to the reset of the driver circuit 2.
  • a reset of the driver circuit 2 leads to a closing of the injectors Il - I4, so that no more fuel is injected.
  • the speed reduction is calculated and compared with a predetermined limit. In a proper reset of the driver circuit 2, the speed decrease ⁇ n must exceed the predetermined minimum limit value ⁇ n min . Otherwise there is an error.
  • the two reset signals DISABLE1 and DISABLE2 are set to high, since both driver circuits 1, 2 are to be switched off.
  • the checking method described above thus takes place in the wake after opening of the ignition switch KL15 and does not affect the normal operation of the internal combustion engine or the injection system.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)
  • Electronic Switches (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)

Claims (13)

  1. Agencement de circuits électroniques pour l'excitation d'au moins un actionneur (I1 à I4), notamment pour l'excitation des soupapes et/ou des injecteurs d'un système d'injection d'un moteur à combustion interne, avec
       au moins un circuit d'excitateurs (1, 2) avec une entrée de commande (Control Line 1, Control Line 2) et avec une entrée de réinitialisation (RESET) pour l'excitation électrique de l'actionneur, en fonction des données entrant à l'entrée de commande (Control Line 1, Control Line 2),
       une unité de commande (3, 4) qui côté sortie est reliée avec l'entrée de réinitialisation (RESET) et par l'intermédiaire d'une ligne de commande (Control Line 1, Control Line 2) avec l'entrée de commande du circuit d'excitateurs (1, 2), et avec
       une entrée de signalisation (K115) reliée en interne avec l'unité de commande (3, 4) pour le raccordement externe d'un élément de commutation, l'unité de commande (3, 4) amenant le circuit d'excitateurs (1, 2) dans un état prédéfini, lors d'une activation de l'élément de commutation par l'intermédiaire de la ligne de réinitialisation (RESET),
       caractérisé en ce que
       le signal d'entrée (K115) pour l'élément de commutation est relié par l'intermédiaire d'un cheminement de signal (9) avec l'entrée de réinitialisation (RESET) du circuit d'excitateurs (1, 2), en contournant l'unité de commande (3, 4).
  2. Agencement de circuits selon la revendication 1,
       caractérisé en ce qu'un circuit logique (7) qui côté entrée est relié d'une part avec l'unité de commande (3, 4) et d'autre part par l'intermédiaire du cheminement de signal (9) avec l'entrée de signalisation est monté en amont de l'entrée de réinitialisation (RESET) du circuit d'excitateurs (1, 2), l'entrée de réinitialisation (RESET) du circuit d'excitateurs (1, 2) pouvant être activée au choix par l'unité de commande (3, 4) et/ou par l'entrée de signalisation.
  3. Agencement de circuits selon la revendication 2
       caractérisé en ce que l'entrée de réinitialisation (RESET) du circuit d'excitateurs (1, 2) est HAUTEMENT active et que le circuit logique comporte un organe OU.
  4. Agencement de circuits selon la revendication 2,
       caractérisé en ce que l'entrée de réinitialisation (RESET) du circuit d'excitateurs (1, 2) est BASSEMENT active et que le circuit logique comporte un organe ET (7).
  5. Agencement de circuits selon l'une quelconque des revendications précédentes,
       caractérisé en ce que dans le cheminement de signal (9) contournant l'unité de commande (3, 4), un élément de temporisation (10) est disposé entre l'entrée de signalisation (KI15) pour l'élément de commutation et l'entrée de réinitialisation (RESET) du circuit d'excitateurs (1, 2).
  6. Agencement de circuits selon la revendication 5,
       caractérisé en ce que l'élément de temporisation (10) présente un temps de retard supérieur à 700 ms.
  7. Agencement de circuits selon l'une quelconque des revendications précédentes,
       caractérisé en ce que l'unité de commande (3, 4) comporte un microcontrôleur (3) et une unité de surveillance (4) reliée au microcontrôleur (3), le microcontrôleur (3) étant relié côté sortie avec l'entrée de commande du circuit d'excitateurs (1, 2), par l'intermédiaire de la ligne de commande (Control Line 1, Control Line 2), alors qu'en revanche l'unité de surveillance (4) est raccordée côté sortie au circuit d'excitateurs (1, 2) par l'intermédiaire de la ligne de réinitialisation (RESET).
  8. Agencement de circuits selon la revendication 7,
       caractérisé en ce que le microcontrôleur (3) et l'unité de surveillance (4) sont raccordés sur un bus de données (SPI).
  9. Agencement de circuits selon la revendication 9,
       caractérisé en ce que le bus de données (SPI) est un bus SPI.
  10. Procédé de vérification de la réinitialisation du circuit d'excitateurs (1, 2) par l'unité de commande (3, 4), sous utilisation d'un agencement de circuits selon l'une quelconque des revendications précédentes, avec les étapes suivantes :
    activation de l'entrée de réinitialisation du circuit d'excitateurs (1, 2) par l'intermédiaire de la ligne de réinitialisation par l'unité de commande (3, 4),
    détection du comportement d'un dispositif influencé par l'actionneur, après l'activation de l'entrée de réinitialisation du circuits d'excitateurs (1, 2),
    évaluation du comportement du dispositif influencé par l'actionneur, pour la vérification d'une réinitialisation correcte du circuit d'excitateurs (1, 2).
  11. Procédé selon la revendication 10,
       caractérisé en ce que le dispositif influencé par l'actionneur est un moteur à combustion interne et en ce que pour la détermination du comportement du moteur à combustion interne après l'activation de l'entrée de réinitialisation du circuit d'excitateurs (1, 2) on mesure la vitesse de rotation du moteur à combustion interne.
  12. Procédé selon la revendication 11,
       caractérisé en ce qu'après l'activation de l'entrée de réinitialisation du circuit d'excitateurs (1, 2), on mesure la vitesse de rotation du moteur à combustion interne à un premier moment et à un second moment consécutif.
  13. Procédé selon la revendication 12,
       caractérisé en ce que l'intervalle de temps entre le premier moment et le deuxième moment est supérieur au temps de retard de l'élément de temporisation.
EP01955255A 2000-07-28 2001-07-17 Ensemble circuit electronique et procede associe, servant a commander un actionneur sous la forme d'une soupape ou d'un injecteur Expired - Lifetime EP1305509B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10036903A DE10036903C1 (de) 2000-07-28 2000-07-28 Elektronische Schaltungsanordnung und zugehöriges Verfahren
DE10036903 2000-07-28
PCT/DE2001/002674 WO2002010570A1 (fr) 2000-07-28 2001-07-17 Ensemble circuit electronique et procede associe, servant a commander un actionneur sous la forme d'une soupape ou d'un injecteur

Publications (2)

Publication Number Publication Date
EP1305509A1 EP1305509A1 (fr) 2003-05-02
EP1305509B1 true EP1305509B1 (fr) 2005-12-07

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EP01955255A Expired - Lifetime EP1305509B1 (fr) 2000-07-28 2001-07-17 Ensemble circuit electronique et procede associe, servant a commander un actionneur sous la forme d'une soupape ou d'un injecteur

Country Status (4)

Country Link
US (1) US6748929B2 (fr)
EP (1) EP1305509B1 (fr)
DE (1) DE10036903C1 (fr)
WO (1) WO2002010570A1 (fr)

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US7330345B2 (en) * 2005-05-09 2008-02-12 Honeywell International, Inc. Valve control method for circuitry for power generation systems
CN100402824C (zh) * 2006-07-23 2008-07-16 燕山大学 电喷发动机变工作排量控制技术
US8636670B2 (en) 2008-05-13 2014-01-28 The Invention Science Fund I, Llc Circulatory monitoring systems and methods
US20090287120A1 (en) 2007-12-18 2009-11-19 Searete Llc, A Limited Liability Corporation Of The State Of Delaware Circulatory monitoring systems and methods
US9717896B2 (en) 2007-12-18 2017-08-01 Gearbox, Llc Treatment indications informed by a priori implant information
CN103206308A (zh) * 2013-04-18 2013-07-17 东风汽车公司 一种用于汽油发动机ecu安全监控系统的方法
CN111762033A (zh) * 2019-04-01 2020-10-13 北京宝沃汽车有限公司 控制车辆供电的方法、装置、存储介质及车辆

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US3699397A (en) * 1971-03-30 1972-10-17 Us Navy Flux-driver circuit for phased array
US4234903A (en) * 1978-02-27 1980-11-18 The Bendix Corporation Inductive load driver circuit effecting slow hold current delay and fast turn off current decay
GB8406331D0 (en) * 1984-03-10 1984-04-11 Lucas Ind Plc Control system
US4589401A (en) * 1985-04-12 1986-05-20 Motorola, Inc. Injector driver fault detect and protection device
IT1223822B (it) * 1988-09-14 1990-09-29 Marelli Autronica Circuito elettrico particolarmente circuito elettronico di potenza per impianti di iniezione di autoveicoli con funzione di rilevazione diagnostica del guasto e relativo procedimento
DE3925881A1 (de) * 1989-08-04 1991-02-07 Bosch Gmbh Robert Verfahren und vorrichtung zur steuerung und/oder regelung der motorleistung einer brennkraftmaschine eines kraftfahrzeugs
US4989150A (en) * 1990-02-23 1991-01-29 Fuji Jukogyo Kabushiki Kaisha Injector diagnosis system
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DE19605606B4 (de) * 1996-02-15 2005-01-27 Robert Bosch Gmbh Einrichtung zum Rücksetzen eines Rechenelements

Also Published As

Publication number Publication date
US6748929B2 (en) 2004-06-15
US20030099079A1 (en) 2003-05-29
EP1305509A1 (fr) 2003-05-02
DE10036903C1 (de) 2002-01-03
WO2002010570A1 (fr) 2002-02-07

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