EP0200010B1 - Zündanlage - Google Patents

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Publication number
EP0200010B1
EP0200010B1 EP86104406A EP86104406A EP0200010B1 EP 0200010 B1 EP0200010 B1 EP 0200010B1 EP 86104406 A EP86104406 A EP 86104406A EP 86104406 A EP86104406 A EP 86104406A EP 0200010 B1 EP0200010 B1 EP 0200010B1
Authority
EP
European Patent Office
Prior art keywords
voltage
ignition
spark gap
medium
voltage transformer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP86104406A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0200010A1 (de
Inventor
Albert Schmidt
Dieter Teutsch
Roland Gaisser
Rudolf Maly
Eberhard Wagner
Hans Albrecht
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.)
BERU Ruprecht GmbH and Co KG
Original Assignee
BERU Ruprecht 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 BERU Ruprecht GmbH and Co KG filed Critical BERU Ruprecht GmbH and Co KG
Priority to AT86104406T priority Critical patent/ATE70598T1/de
Publication of EP0200010A1 publication Critical patent/EP0200010A1/de
Application granted granted Critical
Publication of EP0200010B1 publication Critical patent/EP0200010B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • 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
    • F02P7/03—Arrangements of distributors, circuit-makers or -breakers, e.g. of distributor and circuit-breaker combinations or pick-up devices of distributors with electrical means
    • F02P7/035—Arrangements of distributors, circuit-makers or -breakers, e.g. of distributor and circuit-breaker combinations or pick-up devices of distributors with electrical means without mechanical switching means
    • 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
    • F02P3/06—Other installations having capacitive energy storage
    • F02P3/08—Layout of circuits
    • F02P3/0876—Layout of circuits the storage capacitor being charged by means of an energy converter (DC-DC converter) or of an intermediate storage inductance
    • F02P3/0884—Closing the discharge circuit of the storage capacitor with semiconductor devices
    • 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
    • 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

Definitions

  • the invention relates to an ignition system according to the preamble of patent claim 1.
  • the basic goal is to achieve sparks with the highest possible ignitability.
  • the aspect of high ignitability is gaining importance especially in connection with the lean burn engines that are currently being developed to save fuel, which use fuel-air mixtures (Lambda ⁇ 1.4) that are unwilling to ignite and react very slowly, and with the use of exhaust gas catalytic converters that only misfire tolerated to a limited extent, because unburned fuel entering the catalytic converter can burn the catalytic converter.
  • an ignition system according to the preamble of claim 1 is known.
  • a medium-voltage storage capacitor is provided in the number of ignition strands and the high-voltage converter has inductors which allow the ignition energy stored in the high-voltage storage capacitor to be converted in a period of approximately 0.1 ms.
  • an object of the invention to provide an ignition system which, without amplification or additional load on the primary energy source, is able to reliably deliver the required ignition voltage with a high-energy ignition spark.
  • the use of the low-inductance high-voltage converter in the multiplicity of ignition strands and the associated omission of a high-voltage ignition distributor makes a decisive contribution to ensuring that the energy is lossless and extremely quickly from the medium-voltage storage capacitor, to which the primary energy source works via the medium-voltage converter, into the high-voltage storage capacitor is reloaded.
  • the capacity of the high-voltage storage capacitor can be chosen so high without loss of charging security that even after the spark gap has broken through, i.e. if storage capacity and spark plug capacity are in parallel, the voltage at the spark plug gap is still so high that it is suitable for all operating states Spark plug spark gap is sufficient. With a spark plug capacitance of approximately 20 pF, values of the order of 300 pF are typical for the high-voltage storage capacitor.
  • the spark gap represents a switch that suddenly changes to low resistance when the breakdown voltage is reached, with low inductance and low resistance of the entire ignition circuit, including the voltage converter generating the high voltage, ensuring that voltage rises on the spark gap of the order of 100 kV / ⁇ s can be achieved. As a result, the majority of the energy converted in the spark plug spark gap goes into the plasma structure and thus into the mixture to be ignited.
  • the low resistance and low inductance required for the individual ignition strands include the switching elements which switch the medium-voltage storage capacitor to the individual ignition strands.
  • thyristors are preferably used, which can be easily opened at the correct time and which can be quickly blocked by themselves.
  • a blocking oscillator is preferably provided for the medium-voltage converter on which the primary low-DC voltage source operates. It is short-circuit proof, relatively loss-free buildable, can be optimally adjusted in performance and has a sufficiently rapid voltage rise.
  • the medium voltage storage capacitor to which the voltage converter operates is preferably charged to a voltage of the order of 700 V and has a capacitance of the order of magnitude of 1.5 ⁇ F.
  • the high-voltage storage capacitor can thus be charged to voltage values of approximately 30 kV with a capacitance of the order of magnitude of 300 pF.
  • Such a lossless transmission has proven to be impossible with conventional ignition coils with high inductance and with an ignition distribution on the high voltage side.
  • a voltage converter 2 in the form of a blocking oscillator is acted upon by a voltage typical for these voltage sources, for example 12 V or less, via a disconnector in the form of a switch.
  • the blocking oscillator 2 charges a medium-voltage energy store 1 in the form of a film capacitor of approximately 1.5 ⁇ F capacitance to a voltage of approximately 700 V.
  • the circuit branches into parallel branches of the same structure, corresponding to the multiplicity of the units to be ignited, i.e. Spark plugs or cylinders.
  • controllable isolators preferably fast thyristors, 3a, 3b, 3c, 3d, ... are parallel in the multiplicity of the ignition strings provided.
  • FIG. 3 A preferred construction of an ignition line 4x to 8x is shown in FIG. 3.
  • Transformer 4x To the high voltage output of the High voltage storage capacitor 5x is connected to transformer 4x.
  • spark gap 6x In parallel is the series connection of spark gap 6x and spark plug capacity 7x with spark gap 8x.
  • the spark plug capacitance is typically approx. 20 pF.
  • the capacitance of this spark gap In order for the voltage generated by the transformer 4x to actually drop substantially across the spark gap 6x before the spark gap 6x breaks down, the capacitance of this spark gap must be chosen to be small compared to the spark plug capacitance 7x, so it is preferably of the order of 2 pF.
  • the storage capacitor 5x in turn must be so high with its capacitance that after switching through the spark gap, that is if the capacitance of the storage capacitor 5x and the spark plug capacitance 7x are in parallel, the total capacitance is still essentially determined by the capacitance of the storage capacitor 5x.
  • the desired value for this voltage is of the order of 30 kV.
  • the generation of a voltage of the order of 30 kV on a capacitance of the order of a few hundred pF without additional load on the primary energy source, i.e. battery or alternator, is achieved by using the low-loss and low-inductance high-voltage transformers 4x in conjunction with dispensing with ignition distribution on the high-voltage side and their replacement by the isolators 3x on the low voltage side of the transformers 4x achieved in the multiplicity of these transformers.
  • Particularly suitable values for the high-voltage transformer are of the order of magnitude of 150 ⁇ H inductance, 350 m ⁇ resistance on the primary side in conjunction with 350 mH inductance, 180 ⁇ resistance on the secondary side.
  • a ferrite core material ensures low core losses.
  • the low inductance of the high voltage transformer 4x leads to extremely rapid recharging processes from the medium-voltage storage capacitor into the high-voltage storage capacitor 5x that has just been connected, which, in conjunction with the rapid breakdown of the spark gap that is thereby promoted, provides 6x voltage increases of the order of magnitude 100 kV / ⁇ s on the spark plug spark gap. This favors the energy conversion in the spark gap 8x in the head of the spark, i.e. in the nanosecond range, and contributes to the fact that in the time available, there are only negligible amounts of energy due to possible shunts, such as those caused by sooting the insulator body of the spark plug can drain off.
  • the low inductance of the high-voltage transformer 4x makes its combination with the high-voltage storage capacitor 5x or the medium-voltage storage capacitor 1 very rapidly oscillating resonant circuits, so that the energy which is not converted in the nanosecond range can be returned to the medium-voltage storage capacitor.
  • a diode can be provided antiparallel to the switching path of the thyristor 3x, which is already blocking at this time.
  • the requirements for the isolating element 3x located between the medium-voltage energy store 1 and the high-voltage converter 4x consist primarily in the fact that it can be controlled in a defined time, switches very quickly and is very low-resistance in the switched-through state in order to avoid losses here as well. These requirements are met to a particularly high degree by a fast thyristor, as is available today.
  • the separation elements 3x can be activated in any suitable manner.
  • a map computer that can be controlled via signal transmitters 10 (sensors), so that the ignition timing can be adjusted in accordance with engine requirements, load conditions, etc., can be used as the signal converter 9 that controls the isolating elements 3x.
  • the signal converter 9 can also be a converted mechanical high-voltage ignition distributor without a high-voltage function, which contains the sensors for negative pressure adjustment, centrifugal force adjustment, cylinder detection, etc.
  • a blocking oscillator is preferred as medium-voltage converter 2 because it can be built with relatively little loss, can be optimally adapted in terms of performance, is short-circuit proof and offers a sufficiently rapid voltage rise in the millisecond range. In addition, it can be built small.
  • the blocking oscillator principle it is also possible to fully charge the medium-voltage energy store 1 with a pulse sequence of approximately 10 Hz, sufficient for engine starts, from a primary voltage of 3 V (extreme cold start).
  • a plurality of medium-voltage energy storage devices 1 act on each ignition train, with the provision of corresponding additional isolating elements 3x. This means that several high-energy sparks can be processed one after the other per ignition process and spark plug. Since the ignition system draws energy proportionally to the spark sequence of the battery or alternator, double sparks are possible up to half the maximum spark sequence, and triple sparks at a third of the maximum ignition sequence without a greater load on the battery or alternator than with the maximum spark sequence.
  • FIG. 2 shows part of the circuit of Figure 1 in greater detail.
  • the signal converter 9 for example a map computer, outputs its output control signals to the light-emitting diodes 20a, 20b, 20c, 20d, ... from optocouplers with which the power section is galvanically isolated from the control elements in order to suppress crosstalk from one ignition branch to the other.
  • the phototransistors 21a, 21b, 21c, 21d, ... of the optocouplers give their signals to the control electrodes of the thyristors 3a, 3b, 3c, 3d, ..., which are in series with the primary windings of the high-voltage converters 4a, 4b, 4c, 4d , ... lie.
  • the voltage of the medium-voltage capacitor 1 charged via the blocking oscillator 2 from the alternator or battery is at a voltage of the order of magnitude 1.
  • the Thyristor controlled by signal converter 9, switched through, current flows - because of the low inductance and low resistance of the high-voltage converter 4x and the speed of the thyristor 3x with short rise time and high peak currents.
  • the high-voltage converter transforms the voltage on the primary side high and the high-voltage storage capacitor 5x, which is no longer shown in FIG. 2, is charged with high efficiency in the nanosecond range to the desired voltage of the order of magnitude of 30 kV.
  • the decoupling diodes 22x are omitted and diodes connected antiparallel to the thyristors are provided.
  • the response voltage of the spark gaps was then increased to 27 kV and the capacitance of the storage capacitors increased to 330 pF.
  • the application of the ignition system described is not limited to single and multi-cylinder reciprocating piston engines, but can also be used with rotary piston engines, gas turbines etc. with a wide variety of fuels diesel, gasoline, alcohol, ethanol, hydrogen, hydrogen gasoline, biogas, natural gas, propane etc. with more or less good mixture preparation, more or less emaciated.

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  • 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)
  • Ignition Installations For Internal Combustion Engines (AREA)
  • Magnetic Heads (AREA)
  • Generation Of Surge Voltage And Current (AREA)
EP86104406A 1985-04-15 1986-04-01 Zündanlage Expired - Lifetime EP0200010B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86104406T ATE70598T1 (de) 1985-04-15 1986-04-01 Zuendanlage.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3513422 1985-04-15
DE3513422A DE3513422C2 (de) 1985-04-15 1985-04-15 Zündanlage für Brennkraftmaschinen

Publications (2)

Publication Number Publication Date
EP0200010A1 EP0200010A1 (de) 1986-11-05
EP0200010B1 true EP0200010B1 (de) 1991-12-18

Family

ID=6268042

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86104406A Expired - Lifetime EP0200010B1 (de) 1985-04-15 1986-04-01 Zündanlage

Country Status (9)

Country Link
US (1) US4727891A (cs)
EP (1) EP0200010B1 (cs)
JP (1) JPS61241465A (cs)
AT (1) ATE70598T1 (cs)
BR (1) BR8601692A (cs)
DD (1) DD245702A5 (cs)
DE (1) DE3513422C2 (cs)
ES (1) ES8706903A1 (cs)
IN (1) IN166150B (cs)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1204274B (it) * 1986-04-24 1989-03-01 Claudio Filippone Dispositivo di accensione a controllo elettronico di plasma,per motori a combustione interna
DE3731393A1 (de) * 1987-09-18 1989-04-06 Bosch Gmbh Robert Hochspannungsschalter
JPH04349386A (ja) * 1991-05-27 1992-12-03 West Electric Co Ltd 内燃機関点火装置用の定電圧放電管
DE4117808C2 (de) * 1991-05-31 1994-09-22 Bosch Gmbh Robert Zündanlagen für Brennkraftmaschinen mit Hochspannungsschalter
US6559376B2 (en) 1996-09-30 2003-05-06 Nology Engineering, Inc. Combustion initiation device and method for tuning a combustion initiation device
CA2383205A1 (en) * 1999-09-15 2001-03-22 Gunter Schemmann Electronic circuits for plasma-generating devices
DE10048053A1 (de) * 2000-09-28 2002-06-06 Christoph Koerber Plasmastrahl-Zündsystem
US6374816B1 (en) 2001-04-23 2002-04-23 Omnitek Engineering Corporation Apparatus and method for combustion initiation
US6679235B1 (en) * 2003-02-21 2004-01-20 Delphi Technologies, Inc. High power ignition system having high impedance to protect the transformer
GB0720939D0 (en) * 2007-10-24 2007-12-05 Powell Jude A Coolign device
AT507748A1 (de) * 2008-12-16 2010-07-15 Ge Jenbacher Gmbh & Co Ohg Zündeinrichtung
JP5860481B2 (ja) 2011-01-13 2016-02-16 フェデラル−モーグル・イグニション・カンパニーＦｅｄｅｒａｌ−Ｍｏｇｕｌ Ｉｇｎｉｔｉｏｎ Ｃｏｍｐａｎｙ 選択的に強化されたアーク形成を伴うコロナ点火システム
FR3032232B1 (fr) * 2015-01-30 2017-03-10 Meggitt (France) Generateur d'allumage a haute energie notamment pour turbine a gaz
DE102015002104B4 (de) 2015-02-23 2024-08-01 Spectro Analytical Instruments Gmbh Energieeffizienter und immanent sicherer Anregungsgenerator

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2810159A1 (de) * 1978-03-09 1979-09-13 Bloss Werner H Prof Dr Ing Verfahren und einrichtung zur zuendung brennfaehiger gemische

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US2950419A (en) * 1956-12-07 1960-08-23 Bendix Corp Ignition apparatus
GB1077004A (en) * 1963-05-01 1967-07-26 Rotax Ltd Spark ignition apparatus
US3331034A (en) * 1964-09-10 1967-07-11 Gen Motors Corp Converter stabilizing circuit
DE1439995C3 (de) * 1964-11-27 1974-02-07 Beru-Werk Albert Ruprecht, 7140 Ludwigsburg Funkentstörtes Kondensatorzündgerät
US3575153A (en) * 1968-11-18 1971-04-20 Eltra Corp Regulated voltage converter
US3629651A (en) * 1969-09-25 1971-12-21 Bendix Corp Pulse-generating apparatus
GB1371042A (en) * 1970-10-20 1974-10-23 Plessey Co Ltd Spark generating systems for internal combustion engines
GB1473325A (en) * 1973-06-29 1977-05-11 Lucas Industries Ltd Spark ignition systems for internal combustion engines
US4027198A (en) * 1975-08-14 1977-05-31 The Bendix Corporation Capacitor discharge ignition system
GB1571884A (en) * 1975-12-03 1980-07-23 Lucas Industries Ltd Spark ignition systems for gas turbine engines
JPS57165673A (en) * 1981-04-07 1982-10-12 Nissan Motor Co Ltd Plasma ignition device
US4382430A (en) * 1981-06-01 1983-05-10 Shinichiro Iwasaki Ignition system
JPS57203867A (en) * 1981-06-09 1982-12-14 Nissan Motor Co Ltd Plasma ignition apparatus
US4391236A (en) * 1981-07-24 1983-07-05 Outboard Marine Corporation CD Ignition with automatic spark retard
JPS5859376A (ja) * 1981-10-05 1983-04-08 Nissan Motor Co Ltd プラズマ点火装置
SE437286B (sv) * 1982-07-09 1985-02-18 Saab Scania Ab Tendsystem for flercylindrig fyrtaktmotor
US4479467A (en) * 1982-12-20 1984-10-30 Outboard Marine Corporation Multiple spark CD ignition system
US4487192A (en) * 1983-04-18 1984-12-11 Ford Motor Co Plasma jet ignition system
US4562823A (en) * 1983-07-15 1986-01-07 Nippon Soken, Inc. Ignition device for internal combustion engine
CA1267930A (en) * 1984-02-27 1990-04-17 Ronald C. Pate Combustion initiation system employing hard discharge ignition

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2810159A1 (de) * 1978-03-09 1979-09-13 Bloss Werner H Prof Dr Ing Verfahren und einrichtung zur zuendung brennfaehiger gemische

Also Published As

Publication number Publication date
ES8706903A1 (es) 1987-07-01
DE3513422A1 (de) 1986-12-18
ES553995A0 (es) 1987-07-01
DD245702A5 (de) 1987-05-13
IN166150B (cs) 1990-03-17
BR8601692A (pt) 1986-12-16
DE3513422C2 (de) 1993-10-28
JPS61241465A (ja) 1986-10-27
US4727891A (en) 1988-03-01
ATE70598T1 (de) 1992-01-15
EP0200010A1 (de) 1986-11-05

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