EP1887217A2 - Zündsystem für verbrennungsmotor - Google Patents

Zündsystem für verbrennungsmotor Download PDF

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Publication number
EP1887217A2
EP1887217A2 EP06747762A EP06747762A EP1887217A2 EP 1887217 A2 EP1887217 A2 EP 1887217A2 EP 06747762 A EP06747762 A EP 06747762A EP 06747762 A EP06747762 A EP 06747762A EP 1887217 A2 EP1887217 A2 EP 1887217A2
Authority
EP
European Patent Office
Prior art keywords
spark
ignition
discharge
max
ignition system
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Withdrawn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
EP06747762A
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English (en)
French (fr)
Inventor
Mikhail Panteleimonovich Brizhinev
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.)
Institute of Applied Physics RAS
Original Assignee
Institute of Applied Physics RAN
Institute of Applied Physics RAS
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 Institute of Applied Physics RAN, Institute of Applied Physics RAS filed Critical Institute of Applied Physics RAN
Publication of EP1887217A2 publication Critical patent/EP1887217A2/de
Withdrawn legal-status Critical Current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
    • F02P3/00—Other installations
    • F02P3/02—Other installations having inductive energy storage, e.g. arrangements of induction coils
    • F02P3/04—Layout of circuits
    • F02P3/0407—Opening or closing the primary coil circuit with electronic switching means
    • F02P3/0435—Opening or closing the primary coil circuit with electronic switching means with semiconductor devices

Definitions

  • the invention relates to automobile construction, in particular to electronic ignition systems for internal-combustion engines (ICEs).
  • ICEs internal-combustion engines
  • the invention can be used in spark ignition systems for a more reliable operation of engines under conditions of low temperatures and/or high humidity, as well as for a not so high quality of the fuel-air mixture.
  • a device which increases the plasma volume of a spark in the ignition plug ( RU Patent 2171909 , Int. class 7 F02P3/04, F02P3/08, published in 2001).
  • This device contains a series LC circuit connected in parallel to the spark gap in close vicinity to the ignition plug to exclude the influence of a high-resistance wire of the secondary circuit of the ignition plug.
  • this device increases the spark volume by a factor of 3 to 4 and enhances the ionizing and thermal effect.
  • This known device solves the problem of the spark current increase, but additional elements are introduced into the scheme.
  • the main drawback of such ignition system is high wave impedance ( ⁇ ⁇ 1M ⁇ ) of the oscillatory circuit formed by the secondary winding of the ignition coil, which is easy to shunt by the leakage impedance in the circuit.
  • the required, time-controlled duration of a continuous discharge can be obtained by a relaxation-oscillatory system of electronic ignition of ICE ( RU Patent 2054575 , Int.class 7 F02P3/04, published in 1996).
  • Two additional diodes are introduced into the ICE ignition system, whose primary circuit of the ignition coil contains a high-voltage thyristor-capacitor unit, a low-voltage booster unit, and a thyristor switch.
  • the first diode is connected in parallel to the circuit of a thyristor and a capacitor and connects the thyristor anode and the booster unit.
  • the second diode connects the middle point of the thyristor-capacitor circuit and the output of the primary winding of the ignition coil.
  • the ignition system creates relaxation oscillations, which permits one to support a continuous discharge current the required time and to form a broad initial front of flame.
  • the ignition system ensures effective burning of the fuel mixture and improves the fuel-consumption efficiency.
  • a drawback of this system is the introduction of additional elements.
  • the use of standard existing ignition coils precludes the solution of the problem of high wave impedance ⁇ of the oscillatory circuit of the secondary winding. This reduces reliability of operation and starting of the engine under unfavorable conditions due to shunting of the plug discharge gap by the leakage impedance.
  • the largest number of common elements with the proposed ignition system is contained in the standard ignition system (see, e.g., S.V.Akimov and Yu.P.Chizhov, "Electrical equipment of automobiles," a manual for higher school, pp. 188-191, “Za Rulem,” 2001 ), which was chosen as the closest counterpart (a prototype).
  • the prototype ignition system contains a power supply, a switch, an ignition coil consisting of the primary and secondary windings and a magnetic conductor, a spark gap, and also tanks and active resistances in the circuits of the primary and secondary windings.
  • a drawback of the standard ignition system is its unreliable performance.
  • the problem solved by the present invention is to increase the spark power and the reliability of spark producing of the ignition system due to exclusion of "overhead” losses by matching the magnitude of the wave impedance ⁇ of the circuit, formed by the inductance and capacitance as parts of the ignition system, and the spark-charge parameters, namely the breakdown voltage and the discharge current.
  • the proposed ignition scheme contains an ignition coil, which consists of the primary and secondary windings and a magnetic conductor, and a spark gap included into the secondary-winding circuit of the ignition coil.
  • the novelty of the developed ignition system is that the ignition coil is so designed that the wave impedance ⁇ of the oscillatory circuit, formed by the inductance and effective capacitance in the secondary winding, with allowance for the leakage currents, lies in the range 1.4 ⁇ U br I max ⁇ ⁇ ⁇ 4.5 ⁇ U br I max , where
  • U br is the minimum value of the voltage in the discharge gap, for which the breakdown is guaranteed and I max is the maximum admissible current of a spark discharge.
  • the maximum value of the discharge current is limited by the condition of transition of the high-voltage spark burning to the mode of a low-voltage plasma-arc discharge for which the main energy of the arc is spent not for heating of the fuel-air mixture, but for destruction of the plug electrodes.
  • the windings of the ignition coils should be manufactured with increased magnetic stray flux, e.g., in the form of a wafer.
  • the magnetic conductor of the ignition coil should be manufactured of a material with low specific losses, e.g., transformer iron rated for a frequency of 400 Hz.
  • the ignition system contains power supply 1, active resistance 2, capacitor 3, and commutator 4, included into primary-winding circuit 5 of the ignition coil.
  • the ignition coil also comprises a magnetic conductor, designed as magnetic core 6, and secondary winding 7, whose circuit contains self-inductance 8 of secondary winding 7, capacitance 9, calculated from the primary circuit, leakage impedance 10, and discharge gap 11 of the ignition plug.
  • Power supply 1 is an electrical cell, and resistance 2 is the active resistance of the primary circuit.
  • the ignition coil is so designed that the transformation coefficient K ⁇ 15-30.
  • the maximum voltage in primary winding 5 of the ignition coil reaches 1000-1500 V, which increases the requirement to a choice of the element base for commutator 4.
  • Magnetic core 6 of the ignition coil can be manufactured of a material with low specific losses, e.g., transformer iron rated for an operating frequency of 400 Hz.
  • Secondary winding 7 can also be designed as a wafer.
  • self-inductance 8 of secondary winding 7 limits the spark current and excludes losses in the capacitance phase of a discharge.
  • the coil parameters are chosen the same as for an on-shelf ignition coil of industrial design.
  • the inductance of primary winding 5 of the ignition coil amounts to L ⁇ 4 mH
  • the coil current I ⁇ 6-8 A and the capacitance of capacitor 3, which shields the electronic switch (commutator 4) against voltage overload is C ⁇ 0.1 ⁇ F.
  • the proposed ignition system is operated as follows.
  • commutator 4 in primary winding 5 of the ignition coil is switched on, a current arises from power supply 1 through primary winding 5 of the coil and commutator 4.
  • the current reaches the maximum admissible value, an energy sufficient for producing a spark discharge in the plug is accumulated in the coil.
  • the current of primary winding 5 charges capacitor 3, inducting a high voltage in secondary winding 7.
  • a breakdown occurs, and a current through secondary winding 7 of the coil is initiated.
  • the ignition system with claimed properties was obtained for a constant energy consumption (constant maximum current of the ignition coil).
  • the resulting system is less sensitive to leakage currents compared to the known counterparts since the magnitude of leakage impedance 10 is almost always greater than the wave impedance ⁇ of secondary-winding circuit 7 and cannot shunt it, which permits one to exclude "overhead” losses and thereby resolve the posed problem.
  • Tests of the ignition system confirmed high stability of spark producing in the plugs, such that the plugs remained serviceable even after about 100 thousand kilometers.
  • the presence of a soot deposit, petrol, and antifreeze on the plug insulator did not affect the stable operation of the engine.
  • the developed ignition system of ICE is manufactured on the basis of a modern element base (components).
  • the number of turns of the secondary-winding of the ignition coil amounted to ⁇ 2000, which should depress its self-cost in serial production since the usual number of turns lies in a range of 16 to 40 thousands.
  • the developed ignition system of ICE is ready for mass production.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)
EP06747762A 2005-05-05 2006-04-25 Zündsystem für verbrennungsmotor Withdrawn EP1887217A2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
RU2005113815/06A RU2287080C1 (ru) 2005-05-05 2005-05-05 Система зажигания двс
PCT/RU2006/000204 WO2006121368A2 (fr) 2005-05-05 2006-04-25 Systeme d'allumage pour moteur a combustion interne

Publications (1)

Publication Number Publication Date
EP1887217A2 true EP1887217A2 (de) 2008-02-13

Family

ID=37396994

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06747762A Withdrawn EP1887217A2 (de) 2005-05-05 2006-04-25 Zündsystem für verbrennungsmotor

Country Status (4)

Country Link
EP (1) EP1887217A2 (de)
CN (1) CN100575696C (de)
RU (1) RU2287080C1 (de)
WO (1) WO2006121368A2 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5997689B2 (ja) * 2011-03-04 2016-09-28 日立オートモティブシステムズ株式会社 内燃機関用点火コイル
CN106555683B (zh) * 2016-11-18 2019-05-31 龙岩学院 一种沼气发动机点火控制方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1414588B2 (de) * 1962-07-04 1971-07-22 Robert Bosch Gmbh, 7000 Stuttgart Zuendeinrichtung fuer brennkraftmaschinen
DE2338556C2 (de) * 1973-07-30 1982-09-09 Robert Bosch Gmbh, 7000 Stuttgart Zündanlage für Brennkraftmaschinen
RU2054575C1 (ru) 1992-10-26 1996-02-20 Акимов Николай Александрович Релаксационно-колебательная система электронного зажигания двигателя внутреннего сгорания
RU2107184C1 (ru) 1996-05-13 1998-03-20 Валерий Афанасьевич Винокуров Искровая система зажигания

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2006121368A2 *

Also Published As

Publication number Publication date
CN101213366A (zh) 2008-07-02
RU2287080C1 (ru) 2006-11-10
WO2006121368A3 (fr) 2007-03-01
CN100575696C (zh) 2009-12-30
WO2006121368A2 (fr) 2006-11-16

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