EP2115296A1 - Steuerung mehrerer steckerspulen über eine einzelne leistungsstufe - Google Patents

Steuerung mehrerer steckerspulen über eine einzelne leistungsstufe

Info

Publication number
EP2115296A1
EP2115296A1 EP08762151A EP08762151A EP2115296A1 EP 2115296 A1 EP2115296 A1 EP 2115296A1 EP 08762151 A EP08762151 A EP 08762151A EP 08762151 A EP08762151 A EP 08762151A EP 2115296 A1 EP2115296 A1 EP 2115296A1
Authority
EP
European Patent Office
Prior art keywords
frequency
circuit
plasma generation
resonator
plasma
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.)
Granted
Application number
EP08762151A
Other languages
English (en)
French (fr)
Other versions
EP2115296B1 (de
Inventor
Paulo Barroso
Clément Nouvel
Nabil Meziti
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.)
Renault SAS
Original Assignee
Renault SAS
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 Renault SAS filed Critical Renault SAS
Publication of EP2115296A1 publication Critical patent/EP2115296A1/de
Application granted granted Critical
Publication of EP2115296B1 publication Critical patent/EP2115296B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
    • F02P9/00—Electric spark ignition control, not otherwise provided for
    • F02P9/002—Control of spark intensity, intensifying, lengthening, suppression
    • F02P9/007—Control of spark intensity, intensifying, lengthening, suppression by supplementary electrical discharge in the pre-ionised electrode interspace of the sparking plug, e.g. plasma jet ignition
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
    • F02P9/00—Electric spark ignition control, not otherwise provided for
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
    • F02P17/00—Testing of ignition installations, e.g. in combination with adjusting; Testing of ignition timing in compression-ignition engines
    • F02P17/12—Testing characteristics of the spark, ignition voltage or current
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
    • F02P23/00—Other ignition
    • F02P23/04—Other physical ignition means, e.g. using laser rays
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
    • F02P7/00—Arrangements of distributors, circuit-makers or -breakers, e.g. of distributor and circuit-breaker combinations or pick-up devices
    • F02P7/02—Arrangements of distributors, circuit-makers or -breakers, e.g. of distributor and circuit-breaker combinations or pick-up devices of distributors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
    • F02P23/00—Other ignition
    • F02P23/04—Other physical ignition means, e.g. using laser rays
    • F02P23/045—Other physical ignition means, e.g. using laser rays using electromagnetic microwaves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
    • F02P3/00—Other installations
    • F02P3/01—Electric spark ignition installations without subsequent energy storage, i.e. energy supplied by an electrical oscillator

Definitions

  • the present invention relates generally to systems for generating plasma between two electrodes of a spark plug, used in particular for radiofrequency ignition control of a gaseous mixture in combustion chambers of an internal combustion engine.
  • plasma generation circuits incorporating coils-candles are used to generate multi-filament discharges between their electrodes, to initiate the combustion of the mixture in the chambers of combustion of the engine.
  • the multi-spark plug is described in detail in the following patent applications in the name of the applicant FR 03- 10766, FR 03-10767 and FR 03-10768.
  • Such a coil-plug is conventionally modeled by a resonator 1, whose resonant frequency F c is greater than 1 MHz, typically close to 5 MHz.
  • the resonator comprises in series a resistor R, an inductance L and a capacitance C. Ignition electrodes 10 and 12 of the coil-plug are connected across the capacitor C.
  • the amplitude at the terminals of the capacitor C is amplified, for developing multi- filamentary discharges between the electrodes of the candle, on distances of the order of one centimeter, at high pressure and for peak voltages below 30 kV.
  • branched sparks Insofar as they involve the simultaneous generation of at least several lines or ionization path in a given volume, their branches being moreover omnidirectional.
  • the control of the supply of such a coil-candle requires the use of a supply circuit, capable of generating voltage pulses, typically of rise time of 100 ns, and amplitude of the order of 1 kV, at a frequency intended to be very close to the resonant frequency of the radiofrequency resonator of the coil-candle.
  • a supply circuit capable of generating voltage pulses, typically of rise time of 100 ns, and amplitude of the order of 1 kV, at a frequency intended to be very close to the resonant frequency of the radiofrequency resonator of the coil-candle.
  • Such a power supply circuit is shown diagrammatically in FIG. 2. It conventionally implements a so-called "Class E power amplifier" assembly. This type of DC / AC converter makes it
  • the amplifier 2 comprises a switch M for controlling the switches at the terminals of the resonator 1, produced according to this example in the form of a power MOSFET transistor.
  • a control device 5 generates and applies a control signal Vl to a control frequency on the gate of the power MOSFET M, via a control stage 3 shown schematically.
  • the latter is activated by the different ignition commands and is in the form of control pulse trains at the control frequency.
  • a parallel resonant circuit 4 is connected between an intermediate voltage source Vinter and the drain of the transistor M.
  • This circuit 4 comprises an inductance Lp in parallel with a capacitance Cp.
  • the parallel resonator transforms the intermediate voltage Vinter into an amplified voltage Va (illustrated in FIG. 5), corresponding to the intermediate voltage multiplied by the overvoltage coefficient of the parallel resonator.
  • This amplified voltage is provided on the drain of the transistor M furthermore connected to the input of the resonator 1.
  • the transistor M thus acts as a switch and applies (respectively blocks) the voltage Va to the input of the resonator 1 when the signal of command Vl is at logic high (respectively low).
  • the transistor M thus imposes a switching frequency determined by the control signal Vl, which is sought to make as close as possible to the resonant frequency of the coil-plug connected at the output (typically 5 MHz). in order to maintain and maximize the energy transfer between the parallel resonator 4 and the series resonator 1 forming the coil-candle.
  • This phase of energy transfer from the power stage formed by the amplifier to the resonator of the coil-plug must be performed at the resonance frequency of the resonator, to ensure a good performance. Indeed, if the transistor M imposes a different switching frequency of the resonant frequency of the coil-candle, the energy transfer is degraded, because of the narrow bandwidth of the series resonator used for the candle coil .
  • each combustion chamber is equipped with a coil-candle as described above to initiate, on command, combustion.
  • the present invention aims to overcome this disadvantage, by allowing to control a plurality of coils-candles through the same and single amplification channel.
  • the subject of the invention is a radiofrequency plasma generator device, characterized in that it comprises: a power supply circuit comprising a switch controlled by a control signal for applying an intermediate voltage to an output of the supply circuit at a frequency defined by the control signal,
  • each plasma generation circuit having a resonance frequency of its own and capable of generating a plasma when a high voltage level is applied to the output of the supply circuit at a frequency substantially equal to the resonance frequency of the plasma generating circuit, a control device of the supply circuit, determining the frequency of the control signal among one of the frequencies of resonance of the plasma generation circuits, so as to selectively control each plasma generation circuit according to the control frequency used.
  • each plasma generation circuit comprises a resonator and each resonator comprises a distinct resonance frequency.
  • each plasma generation circuit comprises a resonator, each resonator having an identical resonant frequency, and at least one of the plasma generation circuits further comprises means for shifting the resonance frequency of its resonator.
  • the frequency shift means comprise an impedance matching circuit arranged in series between the output of the supply circuit and the resonator.
  • the impedance matching circuit comprises an inductance.
  • the impedance matching circuit is constituted by an impedant connecting cable providing the connection between the output of the supply circuit and each resonator, the length of the portion of cable between the resonators defining the frequency offset. between the resonators.
  • each plasma generation circuit is adapted to achieve ignition in one of the following implementations: controlled ignition in a combustion engine cylinder, ignition in a particle filter, ignition decontamination in an air conditioning system.
  • the invention also relates to a method for controlling the power supply of a plasma generating device comprising a power supply circuit having a switch controlled by a control signal for applying an intermediate voltage to a frequency defined by the control signal on an output of the supply circuit, to which at least two plasma generating circuits are connected in parallel, each plasma generating circuit being arranged to be selectively controlled at a resonant frequency
  • said method comprising the steps of: receiving a request for determining a control frequency; determination of the plasma generation circuit to be controlled; determining a control frequency substantially equal to the resonant frequency of the plasma generating circuit to be controlled; - generating the control signal at the determined control frequency.
  • FIG. 1 is a diagram illustrating an electric model used for the resonator modeling a plasma generation coil-spark plug
  • FIG. 2 is a diagram illustrating a device for generating a high voltage integrating an amplifier, used for powering and controlling a spark plug coil
  • FIG. 3 illustrates a first embodiment of distribution of the resonant frequencies of the bobbins according to the invention
  • FIG. 4 illustrates a second embodiment of distribution of the resonant frequencies of the spark plug coils according to the invention
  • FIG. 5 illustrates a complete diagram of a radiofrequency ignition comprising N spark plugs according to the invention
  • FIG. 6 illustrates a flowchart of an exemplary implementation of the control of the ignition according to the invention.
  • the present invention therefore aims at controlling a plurality of coil-type plasma generation circuits, using a single amplification channel, in other words by using a single power supply circuit of the class E power amplifier type as previously described. in FIG. 2, for selectively supplying the plurality of plasma generation circuits connected in parallel at the output of this single supply circuit.
  • each of these plasma generating circuits has a resonant frequency well separated from the others. This is indeed to avoid overlapping resonance frequency resonator domains forming each plasma generation circuit and thus to overcome the problems of multiple simultaneous ignitions.
  • the resonant frequency difference between the plural plasma generation circuits connected in parallel at the output of the single supply circuit must preferably be at least equal to a multiple of the bandwidth of each resonator. For example, it may be possible to shift the resonance frequency of each plasma generating circuit relative to each other by a value equal to two or three times the bandwidth of each circuit. Several embodiments are possible to achieve such a frequency shift between the resonant frequencies of each plasma generation circuit.
  • a first way of doing is to use for each plasma generation circuit a coil-candle, as modeled in Figure 1, different by construction, so that the coils-candles used have sufficiently distinct resonant frequencies in accordance with the principles outlined above.
  • each plasma generation circuit consists of a resonator as shown in FIG. 1 and in which each resonator has a distinct resonance frequency
  • each plasma generation circuit consists of a resonator as shown in FIG. 1 and in which each resonator has a distinct resonance frequency
  • it requires the adaptation of the industrial process to the production of a plurality of separate types of coils-candles and then requires as many references of coils-candles that there are channels to control.
  • a preferred embodiment for effecting the resonance frequency shift between the plurality of plasma generation circuits to be controlled consists in using identical coil-plugs, the resonators of which model them. identical resonant frequencies, and to associate with each resonator means for shifting its resonant frequency.
  • the resonance frequency shifting means of a plasma generation circuit comprise an impedance matching circuit 14, arranged to be arranged in series between the output of the supply circuit 2 and the resonator 1.
  • the impedance-resonator pair forming the plasma generation circuit sees its resonant frequency offset with respect to the resonance frequency of the resonator 1 of the insulated coil-candle.
  • the insertion of such impedance circuits of respective different values, respectively Z1, Z2, Z3 and Z4, in series between the output of the single supply circuit and each coil-candle, respectively BB1.
  • the impedance values of the circuits 14 are thus chosen so that the difference in resonance frequency between each plasma generation circuit, each constituted by an impedance-resonator torque, is equal to at least one multiple of the bandwidth of each resonator.
  • the resonance frequency shifting means of a plasma generating circuit with respect to another uses the connection cable providing the connection between the output of the supply circuit and each coil-candle as series impedance, the coils-candles being otherwise identical, namely that their resonator have an identical resonant frequency.
  • it is the length of the cable portion, respectively L1, L2, L3, between the spark-coils, respectively between BB1 and BB2, between BB2 and BB3 and between BB3 and BB4, which acts as an impedance , in particular of inductance, and thus defines the resonator frequency offset between the resonators of the coils-candles.
  • the control method of the single power supply circuit must then take into account the frequency adapted to the channel to be controlled for each ignition.
  • control device 5 of the power supply circuit can have a memory capable of preserving the order of frequency classification corresponding to each of the channels to be controlled.
  • the control device on receipt of an ignition request, is first of all able to to determine the cylinder to be controlled, numbered for example from 1 to 4 in the order of disposition on the engine.
  • Each cylinder number is therefore associated with the resonance frequency, respectively F1, F2, F3 and F4, specific to the corresponding plasma generation circuit to be controlled.
  • the control device then comprises a module determining the frequency of the control signal to be generated, among these frequencies F1, F2, F3 and F4, as a function of the number of the cylinder to be switched on and the order of classification of the previously memorized frequencies.
  • control device applies the control signal to said frequency on an output interface intended to control the switch M.
  • the selective power transfer to the plasma generating circuit to be controlled for ignition is then naturally managed by the control frequency used for this ignition.
  • the determination of the resonant frequencies to be obtained at the output of the single supply circuit can be controlled by tabulation or servocontrol methods as described in the French patent applications filed in the name of the applicant FR 05-127669 and FR 05-12770.
  • the control device may be provided with an interface for receiving engine operating parameter measurement signals (engine oil temperature, engine torque, engine speed, ignition angle, air temperature). inlet, pressure in the combustion chamber, etc.) and / or power supply operating parameter measurement signals, as well as a particular memory module storing relationships between measurement signals and the frequency of a control signal to be generated.
  • the controller determines the frequency of a control signal to be generated based on measurement signals received on the receiving interface and relationships stored in the memory module.
  • Other applications than the achievement of a controlled ignition of combustion engine can be envisaged without departing from the scope of the present invention, such as the realization of ignition in a particle filter, or ignition of decontamination in an air conditioning system.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Optics & Photonics (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)
  • Generation Of Surge Voltage And Current (AREA)
  • Amplifiers (AREA)
EP08762151.2A 2007-03-01 2008-02-25 Steuerung mehrerer steckerspulen über eine einzelne leistungsstufe Not-in-force EP2115296B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0701499A FR2913298B1 (fr) 2007-03-01 2007-03-01 Pilotage d'une pluralite de bobines bougies via un unique etage de puissance
PCT/FR2008/050310 WO2008113955A1 (fr) 2007-03-01 2008-02-25 Pilotage d'une pluralite de bobines bougies via un unique etage de puissance

Publications (2)

Publication Number Publication Date
EP2115296A1 true EP2115296A1 (de) 2009-11-11
EP2115296B1 EP2115296B1 (de) 2017-09-06

Family

ID=38566150

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08762151.2A Not-in-force EP2115296B1 (de) 2007-03-01 2008-02-25 Steuerung mehrerer steckerspulen über eine einzelne leistungsstufe

Country Status (9)

Country Link
US (1) US8547020B2 (de)
EP (1) EP2115296B1 (de)
JP (1) JP5036830B2 (de)
KR (1) KR20090115947A (de)
CN (1) CN101622442B (de)
BR (1) BRPI0807707A2 (de)
FR (1) FR2913298B1 (de)
RU (1) RU2009136346A (de)
WO (1) WO2008113955A1 (de)

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DE102011052096B4 (de) * 2010-09-04 2019-11-28 Borgwarner Ludwigsburg Gmbh Verfahren zum Erregen eines HF-Schwingkreises, welcher als Bestandteil einen Zünder zum Zünden eines Brennstoff-Luft-Gemisches in einer Verbrennungskammer hat
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CN104426411B (zh) * 2013-08-28 2018-02-23 贵阳帕斯玛环保技术有限公司 一种单谐振高频高压电源
US9716371B2 (en) 2013-12-12 2017-07-25 Federal-Mogul Ignition Company Non-invasive method for resonant frequency detection in corona ignition systems
US9525274B2 (en) 2014-04-29 2016-12-20 Federal-Mogul Ignition Company Distribution of corona igniter power signal
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JP6190793B2 (ja) * 2014-11-13 2017-08-30 三菱電機株式会社 内燃機関用点火装置
US9518555B2 (en) * 2014-12-04 2016-12-13 Freescale Semiconductor, Inc. Radiation devices
JPWO2016108283A1 (ja) * 2014-12-29 2017-11-02 イマジニアリング株式会社 点火システム、及び内燃機関
JP6449736B2 (ja) * 2015-08-05 2019-01-09 三菱電機株式会社 内燃機関点火装置
AT518968B1 (de) 2016-07-08 2019-05-15 Ge Jenbacher Gmbh & Co Og Steuervorrichtung für eine Vielzahl von Aktuatoren einer Brennkraftmaschine
JP2018025190A (ja) * 2016-08-09 2018-02-15 サンケン電気株式会社 点火装置
WO2018225169A1 (ja) * 2017-06-07 2018-12-13 イマジニアリング株式会社 点火装置
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CN116982138A (zh) * 2021-12-31 2023-10-31 源多可股份有限公司 用于多工作站的等离子体处理系统

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Also Published As

Publication number Publication date
CN101622442A (zh) 2010-01-06
US20100194279A1 (en) 2010-08-05
BRPI0807707A2 (pt) 2014-05-27
KR20090115947A (ko) 2009-11-10
CN101622442B (zh) 2011-12-28
JP2010520399A (ja) 2010-06-10
WO2008113955A1 (fr) 2008-09-25
FR2913298B1 (fr) 2009-04-17
EP2115296B1 (de) 2017-09-06
JP5036830B2 (ja) 2012-09-26
RU2009136346A (ru) 2011-04-10
US8547020B2 (en) 2013-10-01
FR2913298A1 (fr) 2008-09-05

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