EP3636916A1 - Système d'allumage doté d'une étincelle d'allumage augmentée par le plasma hf d'une bougie d'allumage ainsi que procédé associé - Google Patents

Système d'allumage doté d'une étincelle d'allumage augmentée par le plasma hf d'une bougie d'allumage ainsi que procédé associé Download PDF

Info

Publication number
EP3636916A1
EP3636916A1 EP19201483.5A EP19201483A EP3636916A1 EP 3636916 A1 EP3636916 A1 EP 3636916A1 EP 19201483 A EP19201483 A EP 19201483A EP 3636916 A1 EP3636916 A1 EP 3636916A1
Authority
EP
European Patent Office
Prior art keywords
ignition
spark
voltage
frequency
fuel
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.)
Withdrawn
Application number
EP19201483.5A
Other languages
German (de)
English (en)
Inventor
Karsten Michels
Martin Fuchs
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.)
Volkswagen AG
Rosenberger Hochfrequenztechnik GmbH and Co KG
Original Assignee
Volkswagen AG
Rosenberger Hochfrequenztechnik GmbH and Co KG
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 Volkswagen AG, Rosenberger Hochfrequenztechnik GmbH and Co KG filed Critical Volkswagen AG
Publication of EP3636916A1 publication Critical patent/EP3636916A1/fr
Withdrawn legal-status Critical Current

Links

Images

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
    • 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
    • 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
    • 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
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B19/00—Engines characterised by precombustion chambers
    • F02B19/10—Engines characterised by precombustion chambers with fuel introduced partly into pre-combustion chamber, and partly into cylinder
    • F02B19/1019—Engines characterised by precombustion chambers with fuel introduced partly into pre-combustion chamber, and partly into cylinder with only one pre-combustion chamber
    • F02B19/1023—Engines characterised by precombustion chambers with fuel introduced partly into pre-combustion chamber, and partly into cylinder with only one pre-combustion chamber pre-combustion chamber and cylinder being fed with fuel-air mixture(s)
    • 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
    • F02P1/00—Installations having electric ignition energy generated by magneto- or dynamo- electric generators without subsequent storage
    • F02P1/08—Layout of circuits
    • 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
    • F02P15/00—Electric spark ignition having characteristics not provided for in, or of interest apart from, groups F02P1/00 - F02P13/00 and combined with layout of ignition circuits
    • 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
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
    • H01T13/00—Sparking plugs
    • H01T13/40—Sparking plugs structurally combined with other devices
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
    • H01T13/00—Sparking plugs
    • H01T13/50—Sparking plugs having means for ionisation of gap
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
    • H01T13/00—Sparking plugs
    • H01T13/54—Sparking plugs having electrodes arranged in a partly-enclosed ignition chamber
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B19/00—Engines characterised by precombustion chambers
    • F02B19/12—Engines characterised by precombustion chambers with positive ignition

Definitions

  • the invention relates to an ignition method and an ignition system, which is set up to carry out the ignition method for igniting a fuel-air mixture or a fuel-air-exhaust gas mixture of an internal combustion engine with spark ignition, in particular an Otto combustion engine.
  • An internal combustion engine with a prechamber arranged between the combustion chamber and intake manifold is known.
  • the fuel is injected into the prechamber or possibly directly into the combustion chamber, so that a fuel-air mixture is prepared with the intake and compressed combustion air.
  • a spark plug which is referred to as the prechamber spark plug, is arranged in the prechamber.
  • a high-voltage source which is preferably designed as an ignition coil, provides a high-voltage pulse between the electrode and the ground, which causes a sparkover between the electrode and the ground contact.
  • the ignition spark leads to ignition of the fuel-air mixture or, in the case of exhaust gas recirculation, to ignition of the fuel-air-exhaust gas mixture.
  • Ignition systems which are coupled to a plasma generation.
  • An ignition device for igniting a fuel-air mixture in a combustion chamber of an internal combustion engine with a spark plug that has three electrodes is known. It is provided that the first electrode of the spark plug is connected to a high-voltage source for generating an electrical high-voltage pulse, so that the high-voltage pulse is applied to the first electrode. A second electrode is electrically connected to the ground potential. The third electrode of the spark plug is with the output a high-frequency voltage source is electrically connected, so that the high-frequency AC voltage is applied to the third electrode for generating a plasma.
  • An ignition device for igniting a fuel-air mixture based on the principle of partial discharges is known.
  • at least one of two electrodes of the ignition device is completely enclosed by a dielectric made of a solid. If an electrical voltage pulse is applied between these electrodes, partial discharges are generated due to the developing electrical field, which can lead to the formation of an ignition plasma and a flame core. Since the two electrodes are electrically insulated from one another by the dielectric arranged around at least one of the electrodes, complete discharge cannot take place. Therefore, a reliable and stable ignition of a fuel-air mixture can be realized even at high ignition voltages without significant burn-off at the electrodes.
  • an internal combustion engine has a plasma ignition system with an ignition device with dielectric barrier discharge in the cylinder and a fuel injection device for direct injection with a fuel nozzle in the cylinder.
  • a controller functionally connects the internal combustion engine, the plasma ignition system and the fuel injection system.
  • the fuel injection device injects a first fuel pulse before the ignition device is activated.
  • the ignition device then triggers a plasma energy pulse.
  • the fuel injection device is controlled in such a way that it injects a second fuel pulse during the plasma energy pulse.
  • a combustion assist device in an internal combustion engine provided with a fuel injection device is known. It is provided here that at least part of the fuel is injected into the intake manifold.
  • the combustion support device is provided with an electrode element which is arranged in the intake manifold and to which a high-frequency high voltage is applied.
  • the ignition system delivers a spatially extended plasma in a combustion chamber for igniting a fuel-air mixture.
  • the high-frequency plasma ignition consists of a series resonant circuit with an inductor, a high-frequency source for resonant excitation and a capacitance, the capacitance being formed by internal and external electrodes with a dielectric in between and these electrodes reaching with their outer ends with a predetermined mutual distance into the combustion chamber.
  • a high frequency discharge igniter which can stably cause a high frequency current to flow into a spark discharge path and thus efficiently form a large discharge plasma.
  • the high frequency discharge igniter is provided with a spark plug, an ignition coil device that generates a high voltage and supplies the generated high voltage to the spark plug so as to form a spark discharge path in the gap of the spark plug, a voltage amplification device that amplifies the voltage of an alternating current, and a high frequency current supply device that supplies an alternating current to the spark discharge path formed in the gap by means of the voltage amplifying device.
  • the invention is based on the object of providing an improved ignition system for internal combustion engines with spark ignition, in particular for gasoline engines with prechamber ignition.
  • the ignition system should improve the reliability of the ignition of the fuel-air mixture and ensure complete combustion of the fuel-air mixture even under unfavorable operating conditions.
  • the purpose of this is to significantly improve the operation of internal combustion engines with dilute fuel-air-exhaust gas mixtures, in particular in internal combustion engines with exhaust gas recirculation, or to enable them in the first place.
  • an internal combustion engine with the ignition system according to the invention is intended to further increase the efficiency under these unfavorable operating conditions and to reduce the emission of carbon monoxide and unburned hydrocarbons from the fuel.
  • the ignition system is also said to be advantageously suitable for operation using the Miller combustion method and for supercharged gasoline engines with direct fuel injection.
  • the starting point of the invention is an ignition system for a spark-ignition internal combustion engine, the spark ignition of the fuel being implemented by at least one spark plug assigned to a combustion chamber of the internal combustion engine, a first electrode of the spark plug being electrically connected to a high-voltage output of a high-voltage source and a second electrode being in the form of a ground contact, wherein the first electrode of the spark plug is coupled to an ignition system which has a high-frequency output to which a high-frequency voltage is applied, the high-voltage output of the high-voltage source of the spark plug and the high-frequency output being electrically connected to one another, so that a through the high-voltage source of the spark plug between the first electrode and second electrode at the high-voltage output of the high-voltage source is a voltage path for generating the spark discharge of an ignition spark with that applied to the high-frequency output the high-frequency voltage is amplified by coupling the high-frequency voltage via the high-frequency output into the voltage path of the high-voltage source, as a result
  • the spark plug has a prechamber with at least one opening, which connects the prechamber to the combustion chamber on the fuel side, so that the ignition spark in the prechamber, into which the high-frequency plasma can be coupled, causes the plasma-assisted spark ignition of the fuel in the prechamber.
  • the ignition system preferably comprises an HF generator and a power amplifier on the ignition system side.
  • the ignition system comprises a spark plug, which is a prechamber spark plug, with a cover cap having at least one opening, so that the prechamber of the prechamber spark plug is arranged between the cover cap and the first electrode.
  • the ignition system comprises a spark plug, which is a roof electrode spark plug, which is also equipped with the prechamber having at least one opening.
  • the ignition system in the combustion chamber has at least one sensor which detects at least one ignition parameter of the fuel.
  • the invention also relates to an ignition method, preferably using an ignition system with the features mentioned above and the features mentioned in the description.
  • the ignition system according to the invention is set up to carry out the method according to the invention explained below.
  • the ignition system includes, in particular, a control device in which a computer-readable program algorithm for executing the method and any maps required are stored.
  • the starting point of the method is a spark-ignition internal combustion engine, the spark ignition of the fuel being implemented by at least one spark plug assigned to a combustion chamber of the internal combustion engine, a first electrode of the spark plug being electrically connected to a high-voltage output of a high-voltage source and a second electrode being in the form of a ground contact, the first Electrode of the spark plug is coupled to an ignition system which has a high-frequency output to which a high-frequency voltage is applied, the high-voltage output of a high-voltage source of the spark plug and the high-frequency output being electrically connected to one another so that the high-voltage source of the spark plug between the first electrode and the second electrode on High-voltage output of the high-voltage source designed voltage path for generating the spark discharge of an ignition spark with the high-frequency spa present at the high-frequency output voltage is amplified by the high frequency voltage is coupled into the voltage path of the high-voltage source via the high-frequency output, as a result of which a high-frequency plasma is coupled into
  • the spark plug has a prechamber with at least one opening, which connects the prechamber to the combustion chamber on the fuel side, so that the ignition spark is formed in the prechamber into which the high-frequency plasma is coupled, so that plasma-assisted spark ignition of the fuel in the antechamber is effected.
  • the ignition method is preferably characterized in that the high-frequency plasma is generated at a predeterminable initiation time before the ignition of the ignition spark or at the same time as the ignition spark or after the ignition of the ignition spark and is coupled into the ignition spark.
  • the high-frequency plasma is initiated, thus generated and coupled in at least 0.5 ms before the ignition spark is ignited or at the latest 0.5 ms after the ignition spark is ignited.
  • the high-frequency plasma is preferably maintained from the time of initiation for a predefinable burning time of up to 2.5 ms.
  • the burning time of the high-frequency plasma is variable and is varied as a function of ignition parameters of the fuel that are sensed in the combustion chamber.
  • the burning time of the high-frequency plasma is variable as a function of the sensor-detected ignition parameters and is extended if the ignition parameters are poor or shortened if the ignition parameters are good, with a burning time of the high-frequency plasma being set to ⁇ 1 ms or the generation of the high-frequency plasma being stopped if the ignition parameters are good becomes.
  • the high-frequency voltage at the high-frequency output of the power amplifier has a frequency of 1 to 100 MHz and a voltage within a voltage amplitude between 0.1 kV and 30 kV, in particular between 0.4 kV and 1 kV.
  • a voltage ramp at the high-voltage output of the high-voltage source is superimposed by the high-frequency current generated by the HF generator via the power amplifier at the high-frequency output when it is coupled into the voltage path of the high-voltage source, which has a constructive effect on the ignition voltage requirement of the high-voltage source, so that it has a more advantageous effect
  • the ignition voltage requirement of the high voltage source at the high voltage output of the high voltage source is reduced.
  • a fuel-air mixture or a fuel-air-exhaust gas mixture in the combustion chamber is detected with respect to its ignition parameters by sensors and the ignition of the spark plug and the generation of the high-frequency plasma take place as a function of at least one of the detected ignition parameters, wherein at least one actual operating variable, in particular the frequency of the radio-frequency signal and / or the voltage amplitude and / or an initiation time for generating the radio-frequency plasma with an additional energy input in the ignition sparks and / or an increased ignition spark volume by the coupled radio-frequency plasma as a function of the size of the at least one detected Ignition parameters are adapted to the at least one predefinable target / actual operating variable.
  • a charge dilution of the fuel is provided as the variable, which is achieved by leaning or by external or internal residual gas recirculation of the fuel in the combustion chamber at the time of ignition of the spark plug spark is present.
  • the high voltage generated at the high-voltage output of the high-voltage source leads to a sparkover between the first electrode and the second electrode designed as a ground contact and thus to an ignition spark which ignites the fuel-air mixture or the fuel-air-exhaust gas mixture for combustion.
  • the ignition spark forms the spark channel.
  • the invention advantageously enables the radio channel to take over the generated high-frequency plasma by "coupling" the high-frequency power according to the invention, the high-frequency plasma providing additional energy in the ignition sparks within the prechamber for igniting a fuel-air mixture or a fuel-air exhaust gas Mixing enters, which also advantageously results in an increase in the spark volume and a longer plasma burning time.
  • the spark channel still exists when the high-frequency plasma is generated at a predefinable time of initiation, so that the spark channel can be taken over by the high-frequency plasma.
  • the spark is first broken through, which is stronger and more intense after the initiation time by the radio-frequency plasma than without radio-frequency plasma, after which the radio channel is fed and maintained by the radio-frequency plasma.
  • the generated high-frequency plasma and the high-frequency plasma coupled into the spark channel advantageously cause the molecular oxygen to dissociate into atomic oxygen.
  • the atomic oxygen thus available for the combustion and the radicals which arise in this way advantageously lead to the effect that the entire fuel-air mixture or the fuel-air-exhaust gas mixture is more reactive and therefore ignites faster and more reliably.
  • the fuel-air mixture or the fuel-air-exhaust gas mixture are advantageously more easily flammable, as a result of which the ignitability of the fuel-air mixture or fuel-air-exhaust gas mixture is significantly improved.
  • the conductive channel formed by the spark channel is formed / maintained longer and stabilized by the energy additionally supplied by the high-frequency plasma.
  • the spark channel is preferably maintained with high energy for a period of up to 2.5 ms. Extending the maintenance of the spark channel up to 2.5 ms advantageously makes it possible to supply the fuel-air mixture or the fuel-air-exhaust gas mixture with more energy than before, depending on the ignition parameters detected.
  • the high temperature of the spark channel is advantageously maintained for longer due to the additional energy supply.
  • an (almost) complete combustion can ultimately also be achieved in internal combustion engines operated with charge dilution, in the sense of leaner fuel-air mixtures, so that it is also possible with lean mixtures (emaciation) caused by a Excess air are characterized, as well as in the case of fuel-air-exhaust gas mixtures diluted by exhaust gas recirculation (charge dilution by internal or external EGR exhaust gas recirculation) reliable ignition of the otherwise flame-retardant mixtures occurs.
  • the high-frequency plasma advantageously increases the volume of the ignition spark, which also improves the ignition of flame-retardant mixtures by increasing the contact area of the spark channel with the fuel-air mixture or the fuel-air-exhaust gas mixture.
  • the flame-retardant mixtures occur particularly when the engine is operated in the lower part-load range.
  • the invention improves the reliability and completeness of the ignition of flame-resistant fuel-air mixtures or fuel-air-exhaust gas mixtures.
  • the invention in particular makes it possible to reliably operate gasoline engines with significantly higher charge dilution, in particular in part-load operation. At the same time, this mode of operation reduces nitrogen oxide emissions.
  • the improved combustion also reduces the emissions of hydrocarbons of the fuel that are not or only incompletely burned. In addition to reducing pollutant emissions, the specific fuel consumption of the engine is also reduced.
  • the use of a prechamber spark plug with a prechamber or a roof electrode spark plug with high-frequency plasma generation in the ignition spark within the prechamber advantageously means that the reliability of ignition when the charge is diluted is significantly increased.
  • the use of the ignition system according to the invention and the implementation of the method according to the invention in a charge-diluted engine that is to say an engine operated with exhaust gas recirculation, in particular a supercharged, direct-injection gasoline engine and / or a gasoline engine operated according to the Miller method, are provided according to the invention.
  • FIGS. 1A and 1B show in a synopsis a prechamber spark plug 18 of an ignition system 10 which is arranged in a combustion chamber 16 of the internal combustion engine 12 and which, in addition to the prechamber spark plug 18 as an ignition system for spark ignition, comprises a high-voltage source, in particular an ignition coil 24, a high-frequency (HF) generator 32 and a power amplifier 40.
  • a high-voltage source in particular an ignition coil 24, a high-frequency (HF) generator 32 and a power amplifier 40.
  • HF high-frequency
  • the prechamber spark plug 18 comprises a first electrode 20, in particular designed as a center electrode, and a prechamber 18 'and a second electrode 26 as a ground electrode.
  • the spark plug 18, in particular the prechamber spark plug has at least one opening 46 in a cover cap 42, so that a prechamber 18 ′ of the prechamber spark plug 18 is arranged between the cover cap 42 and the first electrode 20.
  • the prechamber 18 ' which forms a prechamber ignition chamber, is connected to the main combustion chamber 16 via the at least one opening 46 (cf. Figure 1A ) connected.
  • a fuel is injected by means of the injector 52 (cf. Figure 1A ) into the main combustion chamber 16.
  • a fuel-air mixture or a fuel-air-exhaust gas mixture is produced in the combustion chamber 16 by injecting the fuel into the air drawn in through the intake manifold 50 or through an exhaust gas recirculation system , which is compressed in a known manner by the piston 54 moving upwards.
  • the fuel-air mixture or a fuel-air-exhaust gas mixture reaches the prechamber 18 ′ of the prechamber spark plug 18 during the compression stroke of the piston 54.
  • the ignition of the fuel-air mixture or the fuel-air-exhaust gas mixture is initiated by the ignition spark 34 in the prechamber 18 ', in particular in the prechamber ignition chamber of the prechamber 18'.
  • the corresponding high-voltage ignition is led from the high-voltage output 22 of the ignition coil 24 to the central electrode 20 of the prechamber spark plug 18 via an electrical line implemented by an ignition cable 56.
  • the ignition spark 34 is triggered as intended to ignite the fuel-air mixture or fuel-air-exhaust gas mixture.
  • a high-frequency voltage generated by the HF generator 32 and passed through the power amplifier 40 and thus amplified is conducted from the high-frequency output 30 to the central electrode 20 of the prechamber spark plug 18, thus coupled into the high-voltage output 22 of the ignition coil 24 at a predeterminable initiation time (before or at the same time or after the ignition spark 34 has been formed).
  • the conductive channel realized by the ignition spark 34 is acted upon by the generated and coupled high-frequency plasma 36 and the ignition spark 34 formed is loaded with more energy and is preferably maintained longer and is more voluminous compared to conventional ignition sparks by the coupled high-frequency plasma 36.
  • the high-frequency plasma 36 advantageously generates more radicals from the molecular compounds of the respective mixture in addition to a conventional ignition spark, which leads to a more stable and faster ignition.
  • the ignition energy is advantageously increased, as a result of which less flammable fuel-air mixtures or fuel-air-exhaust gas mixtures are more reliable can be ignited. Accordingly, leaner fuel-air mixtures or diluted fuel-air-exhaust gas mixtures with partially charged / compressed combustion air return are ignited more reliably and completely.
  • FIG. 1A Shown cylinder of an engine block 48 of an internal combustion engine 12 is formed in a conventional manner with control valves 60, in particular intake and exhaust valves, in the area of an intake manifold 50 and in the area of an exhaust manifold 62.
  • FIGS. 2A and 2 B show in a synopsis a roof electrode spark plug 44 of an ignition system 10 arranged in a combustion chamber 16 of the internal combustion engine 12, which in addition to the roof electrode spark plug 44 as an ignition system for spark ignition of the roof electrode spark plug 44 analogously to the first embodiment, an ignition coil 24, a radio-frequency (RF) generator 32 and one Power amplifier 40 includes.
  • RF radio-frequency
  • the roof electrode spark plug 44 comprises a first electrode 20, in particular in the form of a central electrode, and a prechamber 44 'and a second electrode 26 as a ground electrode.
  • the roof electrode spark plug 44 is equipped with the prechamber 44 'having at least one opening 44'-1. Via the at least one opening 44'-1, the prechamber 44 ', which forms a prechamber ignition chamber, is also (see Figure 2A ) connected to the main combustion chamber 16.
  • a fuel is injected by means of the injector 52 (cf. Figure 1A ) into the main combustion chamber 16.
  • EGR exhaust gas recirculation
  • enriched air-exhaust gas mixture in the combustion chamber 16 becomes a fuel-air mixture or a fuel-air exhaust gas -Mixed produced, which is compressed in a known manner by the piston 54 moving upwards.
  • the fuel-air mixture or a fuel-air-exhaust gas mixture reaches the prechamber 44 ′ of the roof electrode spark plug 44 during the compression stroke of the piston 54.
  • the ignition of the fuel-air mixture or the fuel-air-exhaust gas mixture is advantageously initiated with the effects described by the ignition spark 34 in the prechamber 44 ', in particular in the prechamber ignition chamber of the prechamber 44'.

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)
  • Electromagnetism (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)
EP19201483.5A 2018-10-10 2019-10-04 Système d'allumage doté d'une étincelle d'allumage augmentée par le plasma hf d'une bougie d'allumage ainsi que procédé associé Withdrawn EP3636916A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102018125080.0A DE102018125080A1 (de) 2018-10-10 2018-10-10 Zündsystem mit einem durch ein HF-Plasma vergrößerten Zündfunken einer Zündkerze mit einer Vorkammer sowie ein zugehöriges Verfahren

Publications (1)

Publication Number Publication Date
EP3636916A1 true EP3636916A1 (fr) 2020-04-15

Family

ID=68158946

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19201483.5A Withdrawn EP3636916A1 (fr) 2018-10-10 2019-10-04 Système d'allumage doté d'une étincelle d'allumage augmentée par le plasma hf d'une bougie d'allumage ainsi que procédé associé

Country Status (4)

Country Link
US (1) US10830201B2 (fr)
EP (1) EP3636916A1 (fr)
CN (1) CN111022240B (fr)
DE (1) DE102018125080A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102020115359B4 (de) 2020-06-09 2022-12-08 Bayerische Motoren Werke Aktiengesellschaft Brennkraftmaschine mit einer Vorkammerzündung mit Spülkanal
US20220275748A1 (en) * 2021-02-26 2022-09-01 Hyundai Motor Company Ignition promoter assembly and engine having the same
US12071858B2 (en) 2021-10-13 2024-08-27 General Electric Company Fire retardant engine casing apparatus
WO2024015269A1 (fr) * 2022-07-12 2024-01-18 Prometheus Applied Technologies, Llc Commande d'étincelle basée sur un modèle prédictif
DE102022207300A1 (de) 2022-07-18 2024-01-18 Robert Bosch Gesellschaft mit beschränkter Haftung Verfahren und Vorrichtung zur Steuerung einer Vorkammerzündkerze

Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004058925A1 (de) 2004-12-07 2006-06-08 Siemens Ag Hochfrequenz-Plasmazündvorrichtung für Verbrennungskraftmaschinen, insbesondere für direkt einspritzende Otto-Motoren
DE102008062574A1 (de) * 2008-12-16 2010-06-17 Ge Jenbacher Gmbh & Co. Ohg Zündkerze
DE102010041908A1 (de) * 2009-12-09 2011-06-16 Robert Bosch Gmbh Zündeinrichtung
DE102010000349B3 (de) * 2010-02-10 2011-11-24 Stefan Goldammer Verfahren und Vorrichtung zur Plasmazündung brennstoffhaltiger Gemische, insbesondere in Verbrennungsmotoren und -turbinen
US20120242215A1 (en) * 2011-03-21 2012-09-27 Denso International America, Inc. Copper core combustion cup for pre-chamber spark plug
US20130119865A1 (en) * 2010-07-07 2013-05-16 Imagineering, Inc. Plasma generation device
US8536769B2 (en) * 2010-07-27 2013-09-17 Dkt Verwaltungs-Gmbh Prechamber spark plug
US20150027395A1 (en) * 2011-10-31 2015-01-29 Daihatsu Motor Co., Ltd. Control device for spark ignition type internal combustion engine
DE102014202520B3 (de) 2013-10-18 2015-03-05 Mitsubishi Electric Corporation Hochfrequenz-Entladungszündvorrichtung
DE102015114718A1 (de) 2014-09-08 2016-03-10 GM Global Technology Operations LLC (n. d. Ges. d. Staates Delaware) Verfahren und Vorrichtung zum Steuern des Betriebs eines Verbrennungsmotors
WO2017108389A1 (fr) 2015-12-22 2017-06-29 Robert Bosch Gmbh Dispositif d'allumage pour allumer un mélange carburant air
WO2017167437A1 (fr) 2016-03-29 2017-10-05 Rosenberger Hochfrequenztechnik Gmbh & Co. Kg Dispositif d'allumage pour enflammer un mélange air-carburant dans une chambre de combustion
DE102017214641A1 (de) 2016-08-24 2018-03-01 Mitsubishi Electric Corporation Verbrennungsunterstützungsvorrichtung für Verbrennungsmotor
US20180135506A1 (en) * 2016-11-14 2018-05-17 GM Global Technology Operations LLC Combustion ignition device for an internal combustion engine

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8104444B2 (en) * 2007-10-31 2012-01-31 Caterpillar Inc. Pre-chamber igniter having RF-aided spark initiation
JP6298961B2 (ja) * 2012-10-29 2018-03-28 イマジニアリング株式会社 電磁波放射装置
WO2016075361A1 (fr) * 2014-11-12 2016-05-19 Wärtsilä Finland Oy Moteur à gaz à combustion interne à combustion pauvre comportant un dispositif d'allumage à plasma à décharge à barrière diélectrique à l'intérieur d'une pré-chambre de combustion
WO2016075357A1 (fr) * 2014-11-12 2016-05-19 Wärtsilä Finland Oy Ensemble d'allumage et procédé d'allumage d'un mélange de combustible dans une chambre de combustion d'un moteur à combustion interne à piston
US9771919B2 (en) * 2015-07-10 2017-09-26 Caterpillar Inc. Energy enhanced ignition system having lean pre-combustion
DE102016006350A1 (de) * 2016-05-23 2017-11-23 Rosenberger Hochfrequenztechnik Gmbh & Co. Kg Zündkerze für eine Hochfrequenz-Zündanlage
CN106762331B (zh) * 2016-12-16 2019-03-05 华中科技大学 一种微波辅助火花塞点火方法及其集成装置

Patent Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004058925A1 (de) 2004-12-07 2006-06-08 Siemens Ag Hochfrequenz-Plasmazündvorrichtung für Verbrennungskraftmaschinen, insbesondere für direkt einspritzende Otto-Motoren
DE102008062574A1 (de) * 2008-12-16 2010-06-17 Ge Jenbacher Gmbh & Co. Ohg Zündkerze
DE102010041908A1 (de) * 2009-12-09 2011-06-16 Robert Bosch Gmbh Zündeinrichtung
DE102010000349B3 (de) * 2010-02-10 2011-11-24 Stefan Goldammer Verfahren und Vorrichtung zur Plasmazündung brennstoffhaltiger Gemische, insbesondere in Verbrennungsmotoren und -turbinen
US20130119865A1 (en) * 2010-07-07 2013-05-16 Imagineering, Inc. Plasma generation device
US8536769B2 (en) * 2010-07-27 2013-09-17 Dkt Verwaltungs-Gmbh Prechamber spark plug
US20120242215A1 (en) * 2011-03-21 2012-09-27 Denso International America, Inc. Copper core combustion cup for pre-chamber spark plug
US20150027395A1 (en) * 2011-10-31 2015-01-29 Daihatsu Motor Co., Ltd. Control device for spark ignition type internal combustion engine
DE102014202520B3 (de) 2013-10-18 2015-03-05 Mitsubishi Electric Corporation Hochfrequenz-Entladungszündvorrichtung
DE102015114718A1 (de) 2014-09-08 2016-03-10 GM Global Technology Operations LLC (n. d. Ges. d. Staates Delaware) Verfahren und Vorrichtung zum Steuern des Betriebs eines Verbrennungsmotors
WO2017108389A1 (fr) 2015-12-22 2017-06-29 Robert Bosch Gmbh Dispositif d'allumage pour allumer un mélange carburant air
WO2017167437A1 (fr) 2016-03-29 2017-10-05 Rosenberger Hochfrequenztechnik Gmbh & Co. Kg Dispositif d'allumage pour enflammer un mélange air-carburant dans une chambre de combustion
DE102017214641A1 (de) 2016-08-24 2018-03-01 Mitsubishi Electric Corporation Verbrennungsunterstützungsvorrichtung für Verbrennungsmotor
US20180135506A1 (en) * 2016-11-14 2018-05-17 GM Global Technology Operations LLC Combustion ignition device for an internal combustion engine

Also Published As

Publication number Publication date
CN111022240B (zh) 2022-02-18
DE102018125080A1 (de) 2020-04-16
US10830201B2 (en) 2020-11-10
CN111022240A (zh) 2020-04-17
US20200116119A1 (en) 2020-04-16

Similar Documents

Publication Publication Date Title
EP3636916A1 (fr) Système d'allumage doté d'une étincelle d'allumage augmentée par le plasma hf d'une bougie d'allumage ainsi que procédé associé
EP0892172B1 (fr) Procédé de fonctionnement d'un moteur à combustion interne à injection directe
DE102007034390B4 (de) Verfahren zum Betreiben eines Zündsystems für einen fremdzündbaren Verbrennungsmotor eines Kraftfahrzeugs und Zündsystem
DE3309256C2 (fr)
EP2358986B1 (fr) Moteur à combustion interne et procédé pour la combustion à allumage par compression
DE2535960A1 (de) Brennkraftmaschinen-zuendanlage
DE112015000466B4 (de) Zünder und verfahren zur erzeugung einer plasmaentladungsstrahlung
DE10147529A1 (de) Verfahren zum Betreiben einer mit selbstzündbarem Kraftstoff betriebenen Brennkraftmaschine
EP0211133B1 (fr) Méthode et dispositif pour transférer de l'énergie thermique dans un espace rempli par une matière
DE102016112380A1 (de) Zündsystem mit Zusatzenergie und magerer Vorkammerverbrennung
DE102021209139A1 (de) Zündsystem für zweistufige zündung und motor mit diesem system
EP2510222A1 (fr) Dispositif d'allumage
DE102014214174B4 (de) Zündanordnung für eine Brennkraftmaschine, Brennkraftmaschine und Verfahren zum Betreiben einer Brennkraftmaschine
DE102009046092A1 (de) Stufenkerze
DE102014222925B4 (de) Dielektrisch behinderte Vorkammerzündung
DE2543125A1 (de) Verfahren und vorrichtung zum zuenden von kraftstoff/luft-gemischen in ottomotoren
DE102022207299A1 (de) Verfahren und Vorrichtung zur Steuerung einer Brennkraftmaschine
DE10046693B4 (de) Verfahren zum Betrieb einer direkteinspritzenden Otto-Brennkraftmaschine
DE102008061784B4 (de) Verfahren zum Betreiben einer Otto-Brennkraftmaschine
DE102009016668B4 (de) Brennverfahren für einen fremdgezündeten Verbrennungsmotor
AT526244B1 (de) Verfahren zum Betreiben einer fremdgezündeten Viertakt-Brennkraftmaschine
DE102022004524A1 (de) Verfahren für Zündung einer Brennkraftmaschine mit direkt einspritzendem Treibstoff
WO2007006062A1 (fr) Procede pour faire fonctionner un moteur a combustion interne qui fonctionne avec du carburant gazeux
DE102018211006A1 (de) Verfahren zum Betreiben eines monovalenten Verbrennungsmotors mit Diffusionsverbrennung nach dem Dieselprinzip, Kraftstoffinjektor
DE3040190A1 (de) Verfahren und vorrichtung zum steuern einer verbrennungskraftmaschine

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN PUBLISHED

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20200904

RBV Designated contracting states (corrected)

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: EXAMINATION IS IN PROGRESS

17Q First examination report despatched

Effective date: 20220722

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20230822