EP1838956B1 - Dispositif de commande d'un moteur à combustion interne - Google Patents

Dispositif de commande d'un moteur à combustion interne Download PDF

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Publication number
EP1838956B1
EP1838956B1 EP05850088A EP05850088A EP1838956B1 EP 1838956 B1 EP1838956 B1 EP 1838956B1 EP 05850088 A EP05850088 A EP 05850088A EP 05850088 A EP05850088 A EP 05850088A EP 1838956 B1 EP1838956 B1 EP 1838956B1
Authority
EP
European Patent Office
Prior art keywords
actuator
data
control unit
oscillatory circuit
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 - Fee Related
Application number
EP05850088A
Other languages
German (de)
English (en)
Other versions
EP1838956A1 (fr
Inventor
Bernhard Valouch
Harald Schueler
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
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Publication of EP1838956A1 publication Critical patent/EP1838956A1/fr
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Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F02D41/266—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using computer, e.g. microprocessor the computer being backed-up or assisted by another circuit, e.g. analogue
    • 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
    • F02D41/24—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
    • F02D41/2432—Methods of calibration
    • F02D41/2435—Methods of calibration characterised by the writing medium, e.g. bar code
    • 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

Definitions

  • the invention relates to a device for controlling an internal combustion engine according to the preamble of claim 1.
  • a control unit reads data from a data carrier and used for control.
  • the data carrier is assigned to at least one actuator and includes data that characterize this actuator.
  • injectors which meter fuel to an internal combustion engine as a function of a drive signal have a data carrier which contains correction values with which deviations within a tolerance band of the individual injectors can be compensated. These correction data are determined at the end of the production of the injector and read into the data carrier.
  • the data carrier can be designed in many different ways, for example as a barcode or as a read-only memory element.
  • a system for collecting information has become known in which a device for storing information about the components is a data transponder arranged on the component.
  • the arrangement of the data transponder directly on the component has the advantage that it can be read out particularly reliably. In particular, it is not subject to external influences, such as oil / dirt and the like. Even contact problems on a component / reader interface, which can lead to incorrect programming, are thus excluded.
  • the information stored on the data carrier or the device for storing information is read during the initial initialization of the control unit and used in later operation for controlling the internal combustion engine.
  • the controllers include various functions that also determine correction values associated with an injector. Such a function is, for example, the so-called zero-quantity calibration.
  • the data are usually stored only in the control unit and used to control the internal combustion engine.
  • the individual injection quantity of an injector is detected at several test points. In this case, the deviation of the respective injection quantity from the desired value is determined.
  • These data are placed in the Injektorfertigung in a suitable form on the injector or stored for example in the aforementioned transponder.
  • the data is transmitted via suitable systems, for example via a camera system or by means of a diagnostic interface or by means of suitable readout systems for reading out transponders.
  • the data stored or stored on the injector must be read in again via the diagnostic interface or the camera system or another reading system.
  • the other correction values already determined by the control unit must in this case be read out of the old control unit and transferred to the new control unit.
  • specific functions of the diagnostic interface and / or the control device and / or a service tester are again necessary.
  • the DE 102 44 091 A1 to form the data carrier on the injector in such a way that the control unit writes data into the data carrier.
  • a simple exchange of the controller is possible in the event of a defect. It is of particular advantage that problem-free exchangeability of parts, in particular of the control unit, without the use of specific, manufacturer-dependent tools or testers is given.
  • the transponder is arranged on the outside of the component in order to allow the best possible data transmission. Due to this exposed position, however, there is now the risk of damaging the transponder, in particular if the component is an injector for injecting fuel, which is exposed to harsh operating conditions.
  • the US 6,418,913 describes a device for controlling an internal combustion engine, in which a control unit reads data from a data carrier and used for control.
  • the data carrier is assigned to at least one actuator and includes this actuator characteristic data.
  • the data is read from the data carrier by means of a resonant circuit whose components are arranged in a circuit associated with the actuator.
  • the invention is based on the object to further simplify a device for controlling an internal combustion engine, that with minimal installation effort a fail-safe bidirectional data transmission between the controller and the actuator, such as an injector for injecting fuel into the combustion chamber of an internal combustion engine is possible.
  • the basic idea of the invention is to carry out a bidirectional data transmission between a control device and an actuator, for example an injector for fuel injection, by means of an electrical oscillating circuit, wherein the components of the Resonant circuit, inductors, capacitors and the like, are arranged in the control unit and / or in the actuator, so for example, only in the control unit or only in the actuator or distributed to the control unit and the actuator are arranged.
  • this is a transmission of data on properties of the injector or other data stored in data storage elements of the injector to the controller and conversely, a transfer of data from the controller to the data storage elements of the injector in an optimal manner feasible.
  • the resonant circuit generates a modulated AC signal having at least two discrete frequencies, which is transmitted via supply lines of the actuator.
  • the resonant circuit generates a modulated AC signal having at least two discrete frequencies, which is transmitted via supply lines of the actuator.
  • no additional data lines, connector pins or the like are required.
  • the data transmission is rather very advantageous over the supply lines, for example, the injector for fuel injection.
  • the transmission of the data takes place by means of modulation of an alternating voltage signal.
  • the modulation of the alternating voltage signal is effected by a frequency modulation.
  • the AC signal may additionally comprise selection elements, are addressed by which selection circuits in the injectors'.
  • identifiers such as serial numbers or the like may be included in the data transmission signals emitted by the injectors.
  • actuators for example injectors
  • the actuators are electrically connected to one of their poles and if the respective other poles are guided on switch elements inside or outside the control device-for example in paged out amplifiers-then a selection of the actuator with which data communication is to take place can be effected Switching elements or parallel arranged other switching elements are made.
  • circuit arrangements are provided which largely prevent rectifier effects.
  • the controllers have final stage topologies that include one or more freewheeling diodes for realizing slow and / or fast freewheels of the magnetic field energy of the actuator (s) for the purpose of current regulation or energy recovery.
  • parasitic antiparallel diodes act on some types of transistors, e.g. Mosfet's, or additionally present discrete antiparallel diodes in circuits with IGBTs (Insulated Gate Bipolar Transistors) for the sinusoidal AC signals used, which are usually in the high frequency range, as a rectifier and deform unfavorably the waveform of the signals.
  • IGBTs Insulated Gate Bipolar Transistors
  • the circuits for avoiding these rectifier effects can be realized, for example, that the aforementioned diode lines are selectively operated with a sufficient bias for the signal in the reverse direction.
  • This bias can be ratiometrically generated to the total supply voltage, so that the signal amplitude to improve the data transmission security and to ensure the energy transfer described in more detail below for power conditioning for the circuitry in the actuator can reach a sufficiently large value.
  • the data transmission takes place in times during which no injections take place, for example, in the case of an injector. But it is also possible to carry out the data transmission when a sufficiently long time substantially constant drive signals exist. In this way, the function of the actuator, such as the injector, is not affected during data transmission. There are also no electromagnetic interference that could exceed legal limits. As a result, an accidental switching on the actuator acting as a consumer is very advantageous excluded.
  • the components of the resonant circuit are preferably arranged depending on the actuators used in the control unit or in the circuit associated with the actuator.
  • the subcircuits of the resonant circuit can be capacitive and / or electronic or electromechanical switch to existing power amplifier circuits of the Controller are coupled. As a result, the operation of the power amplifier and the actuator, such as the injector for Kraflatoffeinspritzung not impaired.
  • the data transmission can be carried out on a wide variety of types of actuators, which are inductive, capacitive or ohmic consumers.
  • the actuator is an injector with a piezoelectric actuator
  • the capacitance of the actuator itself forms a component of the resonant circuit, in which case the inductance of this resonant circuit is arranged in the control unit.
  • an inductance of this magnetic circuit can form a component of the resonant circuit.
  • the capacitances of the resonant circuit are arranged in this exemplary embodiment in the control unit and / or in the load.
  • the actuator is an ohmic consumer
  • an additional inductance which is preferably arranged in the control unit
  • a capacitance which is preferably arranged in the consumer
  • the AC signal for optimal power supply is set to a uniform level immediately below the threshold of the actuator.
  • circuitry may be provided in the actuator that amplifies the rectified AC signal. Such circuitry is required whenever the voltage is not sufficient by simple rectification to drive the data transfer circuitry and other circuitry, such as, e.g. to provide a microcontroller for data processing, data storage and control of data transmission in the consumer.
  • the increase of the voltage value can be done by means of voltage multiplication, for example passively by means of diodes or actively with controlled active switches.
  • a transformer can be provided to increase the voltage. In this case, the inductance of the transformer forms part of the total inductance of the resonant circuit and affects its frequency.
  • the frequency of the resonant circuit and / or the ability of the resonant circuit to generate a vibration can be used very advantageously for diagnosing the functionality of the controller, in particular an output stage of the controller and / or the actuator.
  • the figure shows schematically a block diagram of a device making use of the invention.
  • An apparatus for controlling an internal combustion engine shown in the figure, has a control unit 100.
  • the control unit 100 includes a control unit 110, which in turn includes several functions. These are inter alia a so-called quantity compensation control 112 and / or a zero quantity calibration 114.
  • the control unit is connected via supply lines 130, 140 to an actuator 200.
  • a resonant circuit 300 For transmitting data as well as energy from the control unit 100 to the actuator 200 and vice versa, a resonant circuit 300 is provided whose components are distributed to the control unit 100 and the actuator 200.
  • a first component 150 and in the actuator 200, a second component 250 of the resonant circuit 300 are arranged in the control unit 100.
  • the first component 150 in the control unit 100 may be formed for example by a capacitance and / or inductance.
  • the second component 250 in the actuator 200 can be realized in a corresponding manner by an inductance or capacitance or by an ohmic load.
  • the data transmission takes place to a circuit 260 in the actuator 200, which stores and / or processes the transmitted data.
  • the data transmission takes place by means of modulated AC voltage signals, wherein several different types of modulation can be used. An easily generated and evaluated modulation type is the frequency modulation.
  • two discrete sine frequencies are used for the data transmission, or one on-off sampling of the oscillator 300 is used.
  • a data transmission according to the so-called "frequency hopping" method is possible.
  • At least two discrete frequencies are used fixedly or dynamically according to a transmission protocol.
  • the evaluation circuits in this case only have to evaluate the presence of the two or more frequencies changing the rhythm of the data transmission or the on-off keying of a frequency.
  • resonant circuit 300 is generally low in quality, frequency modulation allows for low energy consumption and simple and inexpensive circuitry.
  • a reactance preferably a capacitor, is connected in parallel to the resonant circuit 300 in the control device 100 or the actuator 200 by means of an electronic switch (not shown).
  • the evaluation of the frequency changes takes place by means of frequency discriminators, which are part of the circuit 260, by counting the times between zero crossings or exceeding specifiable thresholds in the signal.
  • the circuit 260 may include a microcontroller. The same applies to the control unit 110 too. It can be provided that the control unit 110 simultaneously demodulates the transmitted data again, that is, receives to obtain information about the quality of the transmitted information.
  • control circuit 260 sends the received data or other information, such as checksums or the like, back to the control unit 110 so as to give the control unit 100 information about the bidirectional transmission path. Namely, if there is no possibility to establish a data transmission to the actuator 200, in particular if the oscillator 300 is unable to form a vibratory structure or massive frequency errors occur, it can be concluded that the actuator 200 has an error. Thus, an indirect detection of errors of the actuator 200 is possible.
  • the alternating voltage signal can also be provided for supplying power to the components 250 of the oscillator 300 arranged in the actuator 200 as well as to the circuit 260 associated with the actuator 200.
  • the AC signal is rectified in a suitable manner and optionally amplified.
  • the rectification and gain circuit 270 is part of the circuit 260.
  • auxiliary current sources or reverse pull-up resistors can be provided in a known manner, which generate a bias voltage. This bias is used simultaneously in actuators having piezoelectric consumers, to prevent their piezoceramics are reformed.
  • the generated AC signal is a harmonic sine wave signal.
  • the frequency or the frequencies resulting from the modulation are placed in a frequency range which is outside of possible interfering radio or übertragungsfrequenzbändem. As a possible frequency range, the range of 100 KHz to 140 KHz in question. The area lies below the German long-wave range and above the time signal transmitter Mainflingen. Other frequency ranges are conceivable. These are adapted to the actuators. It should be emphasized that the frequencies do not have to be kept very stable. They merely have to lie within the specified limits of the available frequency band. For this reason, the capacities of the resonant circuit 300 can be realized by inexpensive ceramic capacitors with a tolerance of ⁇ 10%.
  • the device described above for the bidirectional transmission of data from the control unit 100 to the actuator 200 may also be used for a diagnosis of the actuator 200, in particular for a diagnosis of a final stage of the actuator, which is part of the control unit 110, and / or the actuator 200 become.
  • the frequency of the resonant circuit 300 in the control unit 110 is evaluated and / or the ability of the resonant circuit 300 to generate a vibration for diagnosing the functionality of the control unit 110, in particular an output stage, which is part of this control unit 110, or the actuator 200 used. If the frequency deviates, for example, from a predefinable value, or the resonant circuit 300 does not oscillate generated, it is assumed that a defect of the controller 100 and / or the actuator 200.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)

Abstract

Dispositif de commande d'un moteur à combustion interne dans lequel un appareil de commande (100) extrait des données d'un support de données et / ou écrit des données sur ledit support et utilise lesdites données pour la commande. Le support de données est associé à au moins un actionneur (200) et cet actionneur (200) contient des données de caractérisation. L'extraction des données du support de données ou l'écriture des données sur ledit support sont effectuées par un circuit oscillant (300) dont les composants (150, 250) sont situés dans l'appareil de commande (100) et / ou dans un circuit associé à l'actionneur (200).

Claims (10)

  1. Dispositif de commande d'un moteur à combustion interne, dans lequel un appareil de commande (100) lit des données sur un support de données et/ou en écrit sur ce support de données et les utilise pour la commande,
    le support de données étant associé à au moins un organe de réglage (200) et cet organe de réglage (200) contenant des données caractéristiques,
    caractérisé en ce que
    la lecture des données sur le support de données ou l'écriture des données sur le support de données s'effectuent à l'aide d'un circuit oscillant (300) dont les composants (150, 250) sont disposés dans l'appareil de commande (100) et/ou dans un circuit associé à l'organe de réglage (200), le circuit oscillant (300) formant un signal de tension alternative qui est transmis par les conducteurs d'alimentation (120, 140) de l'organe de réglage (200) et qui présente au moins deux fréquences distinctes.
  2. Dispositif selon la revendication 1, caractérisé en ce que la modulation du signal de tension alternative s'effectue par modulation de fréquence.
  3. Dispositif selon la revendication 2, caractérisé en ce que le transfert de données s'effectue par sauts de fréquence.
  4. Dispositif selon l'une des revendications précédentes, caractérisé en ce que l'alimentation en énergie d'un circuit (260) associée à l'organe de réglage (200) s'effectue par le signal de tension alternative.
  5. Dispositif selon l'une des revendications précédentes, caractérisé en ce que l'organe de réglage (200) est un injecteur qui injecte du carburant dans le moteur à combustion interne.
  6. Dispositif selon la revendication 5, caractérisé en ce que l'injecteur présente un actionneur piézoélectrique qui forme une capacité du circuit oscillant (300) dont l'inductance est disposée dans l'appareil de commande (100) et/ou dans l'organe de réglage (200).
  7. Dispositif selon la revendication 5, caractérisé en ce que l'injecteur présente une soupape magnétique qui forme une inductance du circuit oscillant (300) dont les capacités sont disposées dans l'appareil de commande (100) et/ou dans l'organe de réglage (200).
  8. Dispositif selon l'une des revendications 1 à 4, caractérisé en ce que l'organe de réglage (200) est un consommateur ohmique qui forme un circuit oscillant (300) avec une capacité disposée de préférence dans le consommateur et une inductance disposée de préférence dans l'appareil de commande (100).
  9. Dispositif selon l'une des revendications 1 à 8, caractérisé en ce que les composants (150, 250) qui forment le circuit oscillant (300) forment un oscillateur oscillant librement.
  10. Dispositif selon l'une des revendications 1 à 10, caractérisé en ce que la fréquence du circuit oscillant et/ou la capacité du circuit oscillant (300) à délivrer une oscillation sont évaluées dans l'unité de commande (110) pour diagnostiquer la capacité de fonctionnement de l'appareil de commande (100) et/ou de l'organe de réglage (200).
EP05850088A 2005-01-12 2005-12-12 Dispositif de commande d'un moteur à combustion interne Expired - Fee Related EP1838956B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005001425A DE102005001425A1 (de) 2005-01-12 2005-01-12 Vorrichtung zur Steuerung einer Brennkraftmaschine
PCT/EP2005/056666 WO2006074846A1 (fr) 2005-01-12 2005-12-12 Dispositif de commande d'un moteur à combustion interne

Publications (2)

Publication Number Publication Date
EP1838956A1 EP1838956A1 (fr) 2007-10-03
EP1838956B1 true EP1838956B1 (fr) 2009-02-11

Family

ID=35976563

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05850088A Expired - Fee Related EP1838956B1 (fr) 2005-01-12 2005-12-12 Dispositif de commande d'un moteur à combustion interne

Country Status (5)

Country Link
US (1) US20080255747A1 (fr)
EP (1) EP1838956B1 (fr)
CN (1) CN100529371C (fr)
DE (2) DE102005001425A1 (fr)
WO (1) WO2006074846A1 (fr)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007020061B3 (de) 2007-04-27 2008-10-16 Siemens Ag Verfahren und Datenträger zum Auslesen und/oder Speichern von injektorspezifischen Daten zur Steuerung eines Einspritzsystems einer Brennkraftmaschine
EP2325465A1 (fr) * 2009-11-24 2011-05-25 Delphi Technologies Holding S.à.r.l. Système de communication d'injecteur de carburant
US9306723B2 (en) 2010-02-20 2016-04-05 Google Technology Holdings LLC Multi-carrier control signaling in wireless communication system
DE102015104107B4 (de) * 2014-03-20 2019-12-05 GM Global Technology Operations LLC (n. d. Ges. d. Staates Delaware) Aktor mit integriertem treiber
KR101619633B1 (ko) * 2014-11-06 2016-05-11 현대오트론 주식회사 솔레노이드 밸브를 구동시키기 위한 파형 신호 출력 장치 및 방법

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US5634448A (en) * 1994-05-31 1997-06-03 Caterpillar Inc. Method and structure for controlling an apparatus, such as a fuel injector, using electronic trimming
US5575264A (en) * 1995-12-22 1996-11-19 Siemens Automotive Corporation Using EEPROM technology in carrying performance data with a fuel injector
FR2804557B1 (fr) * 2000-01-31 2003-06-27 St Microelectronics Sa Adaptation de la puissance d'emission d'un lecteur de transpondeur electromagnetique
US6418913B1 (en) * 2000-10-25 2002-07-16 International Engine Intellectual Property Company, L.L.C. Electric-actuated fuel injector having a passive or memory circuit as a calibration group identifier
US6671611B1 (en) * 2000-11-28 2003-12-30 Bombardier Motor Corporation Of America Method and apparatus for identifying parameters of an engine component for assembly and programming
DE10117809A1 (de) * 2001-04-10 2002-10-17 Bosch Gmbh Robert System und Verfahren zum Erfassen von Informationen
US6691677B2 (en) * 2002-02-15 2004-02-17 Cummins Inc. Fuel delivery device and fuel delivery system
DE10213349A1 (de) * 2002-03-26 2003-10-09 Bosch Gmbh Robert System zum Erfassen von Informationen
DE10229019A1 (de) * 2002-06-28 2004-01-29 Robert Bosch Gmbh Verfahren zur Steuerung eines Kraftstoffzumeßsystems einer Brennkraftmaschine
DE10236820A1 (de) * 2002-08-10 2004-02-26 Robert Bosch Gmbh Verfahren zum Individualisieren eines mit einem piezoelektrischen Element versehenen Injektors einer Brennkraftmaschine, Verfahren zur Ansteuerung eines piezoelektrischen Elements, Injektor, sowie Brennkraftmaschine
DE10244091A1 (de) * 2002-09-23 2004-04-01 Robert Bosch Gmbh Verfahren und Vorrichtung zur Steuerung einer Brennkraftmaschine
DE10312914A1 (de) * 2003-03-22 2004-10-07 Robert Bosch Gmbh Kraftstoffeinspritzventil und Brennkraftmaschinenanlage
JP4487922B2 (ja) * 2005-12-15 2010-06-23 株式会社デンソー 燃料噴射装置の初期設定方法、および燃料噴射装置の初期設定方法に用いられる初期設定装置

Also Published As

Publication number Publication date
CN101099035A (zh) 2008-01-02
WO2006074846A1 (fr) 2006-07-20
DE102005001425A1 (de) 2006-07-20
EP1838956A1 (fr) 2007-10-03
DE502005006630D1 (de) 2009-03-26
US20080255747A1 (en) 2008-10-16
CN100529371C (zh) 2009-08-19

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