WO1995002761A1 - Method and system to control the spark frequency of a multispark ignition system - Google Patents

Method and system to control the spark frequency of a multispark ignition system Download PDF

Info

Publication number
WO1995002761A1
WO1995002761A1 PCT/IB1994/000217 IB9400217W WO9502761A1 WO 1995002761 A1 WO1995002761 A1 WO 1995002761A1 IB 9400217 W IB9400217 W IB 9400217W WO 9502761 A1 WO9502761 A1 WO 9502761A1
Authority
WO
WIPO (PCT)
Prior art keywords
ignition
output
fuel
burning
input
Prior art date
Application number
PCT/IB1994/000217
Other languages
French (fr)
Inventor
Jury Alexandrovech Papko
Original Assignee
Jury Alexandrovech Papko
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 Jury Alexandrovech Papko filed Critical Jury Alexandrovech Papko
Priority to JP7504444A priority Critical patent/JPH08501857A/en
Publication of WO1995002761A1 publication Critical patent/WO1995002761A1/en

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
    • 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
    • F02P15/10—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 having continuous electric sparks

Definitions

  • This invention relates to power engineering and may be used in the sys ⁇ tems of ignition and control over processes of burning of fuel-air mixtures, particularly in internal combustion engines.
  • the ignition system is also known, which provides the formation of radio- frequency pulses of voltage in the interelectrode gap, which includes power supply, ignition coil, electronic gate, connected to the primary winding of the ignition coil, pulse generator, the output of which is connected to the elec ⁇ tronic gate and at least one spark-plug 121.
  • the disadvantage of the mentioned methods and devices is that they don ' t provide full enough burning of fuel and decrease of the level of toxicity of combustion products, as the formation of radio-frequency pulses of ignition changes in physico-chemical properties of the fuel-air mixture are not taken in account during its burning.
  • the aim of the invention is to increase efficiency of the burning process and to provide compietenesss of combustion of fuel and to decrease toxicity of combustion products.
  • the aim is achieved by the fact, that in the method of burning of fuel-air mix ⁇ ture, which consists in ignition through supply of radio-frequency pulses of voltage to the electrodes, connected to the secondary winding of the igni ⁇ tion coil, the frequency of pulses of voltage is changed during the burning process of fuel-air mixture, depending on current quantity in the secondary winding of the ignition coil.
  • the ignition system for carrying out this method which has power supply, ig ⁇ nition coil, electronic gate, connected to the primary winding of the ignition coil, pulse generator, the output of which is connected to the electronic gate, and at least one spark- plug, includes generator of feed-back signal, which includes current sensor, connected to the circuit of the primary winding of the ignition coil, the output of which is connected to the input of the analog- to-number converter of the sensor ' s signal, connected by its output to the input of the function converter and the output of the latter is connected to the second input of the pulse generator.
  • generator of feed-back signal which includes current sensor, connected to the circuit of the primary winding of the ignition coil, the output of which is connected to the input of the analog- to-number converter of the sensor ' s signal, connected by its output to the input of the function converter and the output of the latter is connected to the second input of the pulse generator.
  • the ignition system includes power supply 1 , ignition coil 2, electronic gate 3, connected to the primary winding of the ignition coil 2, pulse generator 4, the output of which is connected to the electronic gate 3, driver of the time of supply of ignition pulse 5, connected to the input of pulse generator 4, current sensor 6 in the circuit of the primary winding of the ignition coil 2, the output of which is connected to the analog-to-number converter 7, the output of which is con ⁇ nected to the input of the function converter 8, the output of which is con ⁇ nected to the second input of the pulse generator 4, and spark-plug 9, con ⁇ nected to the secondary winding of the ignition coil 2.
  • the ignition circuit works as follows.
  • the driver of ignition time 5 in synchronism with the frequency of rotation of the engine energizes the pulse generator 4 for the period of time, reverse proportional to the speed of rotation of the crankshaft of the engine.
  • the generator 4 generates a package of pulses with the frequency, determined by the variable, coming from the output of the function converter 8.
  • Pulses from the output of the generator 4 actuate the electronic gate 3, commutating electronic current in the primary winding of the ignition coil 2.
  • pulses of high voltage are induced in the secondary circuit of the ignition coil, which provide elec ⁇ tric discharges between electrodes of the spark-plug 9.
  • the amount of cur ⁇ rent in the circuit of the primary winding of the spark-plug is registered by the current sensor 6 , the signal from which passes to the input of the ana ⁇ log-to-number converter 7.
  • the result of conversion in the form of numeric code passes to the input of the function converter 8.
  • the func ⁇ tion converter 8 represents the matrix of memory cells with the values of nu ⁇ meric codes, corresponding to the values of the numeric code, passing from the output of the anaiog-to-number converter 7 and determining the fre ⁇ quency of pulses, applied by the generator 4 to the input of the electronic gate 3.

Abstract

The method of burning-up the fuel mixture wherein its inflammation by feeding electromagnetic pulses into the fuel mixture is characterized in that the pulses frequency is altered relating to the breakdown voltage of the fuel mixture improving the effectiveness of the combustion process and completeness of fuel burning-up and decrease of the toxicity of the combustion products.

Description

Methode and system to control the spark frequency of a mul ti spark ign ition system
This invention relates to power engineering and may be used in the sys¬ tems of ignition and control over processes of burning of fuel-air mixtures, particularly in internal combustion engines.
Methods of burning of fuel-air mixtures are known, consisting in ignition through supply of radio- frequency pulses to electrodes, connected to the secondary winding of the ignition coil IM.
The ignition system is also known, which provides the formation of radio- frequency pulses of voltage in the interelectrode gap, which includes power supply, ignition coil, electronic gate, connected to the primary winding of the ignition coil, pulse generator, the output of which is connected to the elec¬ tronic gate and at least one spark-plug 121.
The disadvantage of the mentioned methods and devices is that they don't provide full enough burning of fuel and decrease of the level of toxicity of combustion products, as the formation of radio-frequency pulses of ignition changes in physico-chemical properties of the fuel-air mixture are not taken in account during its burning.
The aim of the invention is to increase efficiency of the burning process and to provide compietenesss of combustion of fuel and to decrease toxicity of combustion products.
The aim is achieved by the fact, that in the method of burning of fuel-air mix¬ ture, which consists in ignition through supply of radio-frequency pulses of voltage to the electrodes, connected to the secondary winding of the igni¬ tion coil, the frequency of pulses of voltage is changed during the burning process of fuel-air mixture, depending on current quantity in the secondary winding of the ignition coil.
The ignition system for carrying out this method which has power supply, ig¬ nition coil, electronic gate, connected to the primary winding of the ignition coil, pulse generator, the output of which is connected to the electronic gate, and at least one spark- plug, includes generator of feed-back signal, which includes current sensor, connected to the circuit of the primary winding of the ignition coil, the output of which is connected to the input of the analog- to-number converter of the sensor's signal, connected by its output to the input of the function converter and the output of the latter is connected to the second input of the pulse generator.
In the drawing there is a function circuit of the ignition system for carrying out the proposed method of burning of fuel-air mixture. The ignition system includes power supply 1 , ignition coil 2, electronic gate 3, connected to the primary winding of the ignition coil 2, pulse generator 4, the output of which is connected to the electronic gate 3, driver of the time of supply of ignition pulse 5, connected to the input of pulse generator 4, current sensor 6 in the circuit of the primary winding of the ignition coil 2, the output of which is connected to the analog-to-number converter 7, the output of which is con¬ nected to the input of the function converter 8, the output of which is con¬ nected to the second input of the pulse generator 4, and spark-plug 9, con¬ nected to the secondary winding of the ignition coil 2. The ignition circuit works as follows.
The driver of ignition time 5 in synchronism with the frequency of rotation of the engine ( not shown in the drawing) energizes the pulse generator 4 for the period of time, reverse proportional to the speed of rotation of the crankshaft of the engine. During this period the generator 4 generates a package of pulses with the frequency, determined by the variable, coming from the output of the function converter 8. Pulses from the output of the generator 4 actuate the electronic gate 3, commutating electronic current in the primary winding of the ignition coil 2. As a result, pulses of high voltage are induced in the secondary circuit of the ignition coil, which provide elec¬ tric discharges between electrodes of the spark-plug 9. The amount of cur¬ rent in the circuit of the primary winding of the spark-plug is registered by the current sensor 6 , the signal from which passes to the input of the ana¬ log-to-number converter 7. The result of conversion in the form of numeric code passes to the input of the function converter 8. For example, the func¬ tion converter 8 represents the matrix of memory cells with the values of nu¬ meric codes, corresponding to the values of the numeric code, passing from the output of the anaiog-to-number converter 7 and determining the fre¬ quency of pulses, applied by the generator 4 to the input of the electronic gate 3.
During ignition and burning of fuel-air mixture in the cylinder of the engine, physico-chemical characteristics in the inter-electrode gap of the plug 9 change because of the appearance of the nucleation site for ionized gas. Further propagation of the flame along displacement volume and increase in content of combustion products in the cylinder also change conditions of ignition of the fuel-air mixture.
These factors cause a change in the strength of current in the secondary and primary windings of the ignition coil. The quantity of current, caused by changes in the parameters of burning fuel-air mixture in the vicinity of the electrodes of the stark-plug 9 is converted by the current sensor 6, convert¬ ers 7 and 8 into the control signal, correcting the frequency of pulses, gen¬ erated by the pulse generator 4, and, consequently, the frequency of elec¬ tric discharges in the spark-plug.
The availability of several influential factors determines an essential non- linearity of dependance of optimal pulse repetition frequency of ignition, ap¬ plied by the generator 4 to the input of the electronic gate 3, on physico- chemical condition of the fuel-air mixture in the cylinder of the engine dur¬ ing a working stroke.This relationship is determined experimentally and registered in the form of numeric codes into the memory cells of the function converter 8.
Owing to the proposed method, automatic control over the process of igni¬ tion of the fuel-air mixture, its stable burning and optimization of rates of chemical reactions are provided, which contribute to an increase of efficien¬ cy of the process of burning and completeness of combustion and decrease in toxicity of combustion products.
The author apply for assigning the name "PULSCAR" to this invention.
Sources of information:
1.USSR authoris certificate No.879008, CI.F02" 15/00,19981
2. US patent No. 4522185,01.123/ 637. 1985

Claims

What is claimed is:
1. Method of burning of fuel-air mixture, consisting in its ignition through supply of radio- frequency pulses of voltage to the electrodes of the stark- plug, connected to the secondary winding of the ignition coil, characterized in that the frequency of pulses of voltages is change depending on the breakdown voltage in the fuel mixture.
2. System of ignition, including power supply, ignition coil, electronic gate, connected to the primary winding of the coil, pulse generator , the output of which is connectes to the electronic gate and at least one spark- plug , connected to the secondary winding of the spark- plug, characterized in that that it includes current sensor, connected to the circuit of the primary winding of the ignition coil , analog- to-number converter, connected by its input to the output of the current sensor, and function converter, the input of which is connected to the output of the analog- to-number converter, and the output is connected to the second input of the pulse generator.
PCT/IB1994/000217 1993-07-13 1994-07-11 Method and system to control the spark frequency of a multispark ignition system WO1995002761A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7504444A JPH08501857A (en) 1993-07-13 1994-07-11 Method and apparatus for controlling the spark frequency of a multi-spark ignition device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP93810496.5 1993-07-13
EP93810496A EP0634573A1 (en) 1993-07-13 1993-07-13 Method and system for controlling the spark frequency of a multispark ignition system

Publications (1)

Publication Number Publication Date
WO1995002761A1 true WO1995002761A1 (en) 1995-01-26

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB1994/000217 WO1995002761A1 (en) 1993-07-13 1994-07-11 Method and system to control the spark frequency of a multispark ignition system

Country Status (3)

Country Link
EP (1) EP0634573A1 (en)
JP (1) JPH08501857A (en)
WO (1) WO1995002761A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19608526C2 (en) * 1996-03-06 2003-05-15 Bremi Auto Elek K Bremicker Gm Process for regulating the minimum ignition energy in an internal combustion engine

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2529724A1 (en) * 1975-07-03 1977-01-20 Kyberna Gmbh IGNITION DEVICE FOR COMBUSTION MACHINES (II)
DE2616693A1 (en) * 1976-04-15 1977-11-03 Bosch Gmbh Robert IGNITION SYSTEM, IN PARTICULAR FOR COMBUSTION MACHINERY
DE2619556A1 (en) * 1976-05-04 1977-11-24 Bosch Gmbh Robert IGNITION SYSTEM, IN PARTICULAR FOR COMBUSTION MACHINERY
DE2751450A1 (en) * 1977-11-18 1979-05-23 Bosch Gmbh Robert IGNITION SYSTEM, IN PARTICULAR FOR COMBUSTION MACHINERY
DE2821084A1 (en) * 1978-05-13 1979-11-15 Bosch Gmbh Robert High energy ignition system for IC engine - has additional energy store which can be discharged with specified time delay after first energy store
US4653459A (en) * 1984-08-23 1987-03-31 Robert Bosch Gmbh Method and apparatus for igniting a combustible mixture, especially gasoline-air in the combustion chamber of an internal combustion engine
EP0242839A2 (en) * 1986-04-24 1987-10-28 EL.EN.A. S.r.l. (Electronic Engineering Application) Electronically-controlled plasma ignition system for internal combustion engines
EP0281528A1 (en) * 1987-03-02 1988-09-07 MARELLI AUTRONICA S.p.A. Variable-energy-spark ignition system for internal combustion engines, particularly for motor vehicles
WO1991000961A1 (en) * 1989-07-13 1991-01-24 Siemens Aktiengesellschaft Internal combustion engine ignition device
EP0415240A2 (en) * 1989-08-30 1991-03-06 VOGT electronic Aktiengesellschaft Ignition system for a combustion engine
US5056497A (en) * 1989-04-27 1991-10-15 Aisin Seiki Kabushiki Kaisha Ignition control system
WO1993006363A1 (en) * 1991-09-23 1993-04-01 Cimacar, S.L. Electronic oscilator equipment for internal combustion engines

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2529724A1 (en) * 1975-07-03 1977-01-20 Kyberna Gmbh IGNITION DEVICE FOR COMBUSTION MACHINES (II)
DE2616693A1 (en) * 1976-04-15 1977-11-03 Bosch Gmbh Robert IGNITION SYSTEM, IN PARTICULAR FOR COMBUSTION MACHINERY
DE2619556A1 (en) * 1976-05-04 1977-11-24 Bosch Gmbh Robert IGNITION SYSTEM, IN PARTICULAR FOR COMBUSTION MACHINERY
DE2751450A1 (en) * 1977-11-18 1979-05-23 Bosch Gmbh Robert IGNITION SYSTEM, IN PARTICULAR FOR COMBUSTION MACHINERY
DE2821084A1 (en) * 1978-05-13 1979-11-15 Bosch Gmbh Robert High energy ignition system for IC engine - has additional energy store which can be discharged with specified time delay after first energy store
US4653459A (en) * 1984-08-23 1987-03-31 Robert Bosch Gmbh Method and apparatus for igniting a combustible mixture, especially gasoline-air in the combustion chamber of an internal combustion engine
EP0242839A2 (en) * 1986-04-24 1987-10-28 EL.EN.A. S.r.l. (Electronic Engineering Application) Electronically-controlled plasma ignition system for internal combustion engines
EP0281528A1 (en) * 1987-03-02 1988-09-07 MARELLI AUTRONICA S.p.A. Variable-energy-spark ignition system for internal combustion engines, particularly for motor vehicles
US5056497A (en) * 1989-04-27 1991-10-15 Aisin Seiki Kabushiki Kaisha Ignition control system
WO1991000961A1 (en) * 1989-07-13 1991-01-24 Siemens Aktiengesellschaft Internal combustion engine ignition device
EP0415240A2 (en) * 1989-08-30 1991-03-06 VOGT electronic Aktiengesellschaft Ignition system for a combustion engine
WO1993006363A1 (en) * 1991-09-23 1993-04-01 Cimacar, S.L. Electronic oscilator equipment for internal combustion engines
EP0560775A1 (en) * 1991-09-23 1993-09-22 Cimacar, S.L. Electronic oscilator equipment for internal combustion engines

Also Published As

Publication number Publication date
EP0634573A1 (en) 1995-01-18
JPH08501857A (en) 1996-02-27

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