US3853106A - High frequency continuous-wave ignition energy for an internal combustion engine - Google Patents

High frequency continuous-wave ignition energy for an internal combustion engine Download PDF

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Publication number
US3853106A
US3853106A US00067450A US6745070A US3853106A US 3853106 A US3853106 A US 3853106A US 00067450 A US00067450 A US 00067450A US 6745070 A US6745070 A US 6745070A US 3853106 A US3853106 A US 3853106A
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US
United States
Prior art keywords
current flow
shaft
transistor
flip
high frequency
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
US00067450A
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English (en)
Inventor
R Canup
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.)
Texaco Inc
Original Assignee
Texaco Inc
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 Texaco Inc filed Critical Texaco Inc
Priority to US00067450A priority Critical patent/US3853106A/en
Priority to CA116086A priority patent/CA938996A/en
Priority to GB3292171A priority patent/GB1308750A/en
Priority to ZA714724A priority patent/ZA714724B/xx
Priority to AU31593/71A priority patent/AU457965B2/en
Priority to NL7110971A priority patent/NL7110971A/xx
Priority to BR5202/71A priority patent/BR7105202D0/pt
Priority to ES394367A priority patent/ES394367A1/es
Priority to DE19712141778 priority patent/DE2141778C3/de
Priority to SE7110783A priority patent/SE375131B/xx
Priority to FR7130947A priority patent/FR2102032A5/fr
Priority to CH1248971A priority patent/CH529294A/de
Application granted granted Critical
Publication of US3853106A publication Critical patent/US3853106A/en
Priority to HK280/76*UA priority patent/HK28076A/xx
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
    • 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
    • F02P7/00—Arrangements of distributors, circuit-makers or -breakers, e.g. of distributor and circuit-breaker combinations or pick-up devices
    • F02P7/06—Arrangements of distributors, circuit-makers or -breakers, e.g. of distributor and circuit-breaker combinations or pick-up devices of circuit-makers or -breakers, or pick-up devices adapted to sense particular points of the timing cycle
    • F02P7/067—Electromagnetic pick-up devices, e.g. providing induced current in a coil

Definitions

  • ABSTRACT An ignition system useful with a high frequency con tinuous-wave source of spark energy, where a saturation winding controls the turning on and off of an oscillator which feeds the high frequency output.
  • the system controls current flow to the saturation winding during a timed interval for each spark.
  • the interval is under control of a timing shaft that has magnetic flux density change for inducing a signal in a control coil.
  • the control coil acts to switch a flip-flop circuit which, in turn, controls the gating of current flow to the oscillator control winding.
  • SUMMARY OF THE INVENTION It comprises in combination electromagnetic means associated with said shaft for providing an initial pulse of one polarity and a terminal pulse of the opposite polarity, separated by a pre-determined degree of shaft angle rotation, both pulses for each cylinder of said engine. It also comprises electronic means actuated by both said pulses for cutting off said current flow when said initial pulse appears and for restoring said current flow when said terminal pulse appears.
  • the invention relates to a system for use in a high frequency continuous-wave ignition system for an internal combustion engine.
  • the said system employs: (a) a control winding for starting and stopping said high frequency continuous-wave energy; and it has (b) a shaft for timing said energy relative to said engine.
  • the invention comprises improved means for controlling current flow through said winding (a) in accordance with a predetermined amount of shaft (b) angle rotation, and it comprises in combination (c) a rotor of magnetically permeable material carried by said shaft.
  • the rotor has a plurality of radial projections with concentric arcuate extremities extending concentrically over an arc equal to said predetermined rotation angle.
  • a stator of magnetically permeable material including a permanent magnet and a closed path for the magnetic flux which includes said rotor (c), and (e) a plurality of pointed projections on said stator (d) matching in number the projections on said rotor (c) and forming a minimum air gap when in radial registration with said rotor projections throughout said are.
  • It also comprises (f) a coil located in inductive relation'with said magnetic flux, and (g) a flipflop circuit comprising a pair of transistors and having said coil (f) connected therein for switching same.
  • it comprises (h) a diode and (i) transistor connected in series with said control winding (a) for controlling current flow therethrough, and (j) a PNP transistor connected to the base of said transistor (i).
  • FIG. 1 illustrates a high frequency continuouswave ignition system according to the prior art, e.g. the
  • FIG. 2 is a circuit diagram illustrating an electronic control system according to the inventions
  • FIG. 3 is a top plan view illustrating schematically a timing shaft and related rotor and stator elements, according to the invention.
  • FIG. 4 is a longitudinal cross-sectional view of the shaft and related elements that are illustrated in FIG.
  • the current flow through winding 12 is cut 05 and this creates instantaneous starting of the oscillator 11 in the manner that is explained in the aforementioned U.S. Pat. No. 3,407,795.
  • the oscillator 11 provides high frequency continuouswave energy in the output circuit shown that leads to a distributor 16 and a spark plug 17, all as illustrated.
  • the winding 12 and the magnetic core 15 are shown here in an electronic control circuit that is in accordance with the in-- vention. This circuit determines the timing of intervals during which current flow through the control winding 12 is cut off, sothat the oscillator 1 1 (FIG. 1) will oscillate and supply spark energy.
  • Control of the foregoing intervals is timed to be in proper synchronization with the internal combustion engine, by having the control circuit (illustrated in FIG.
  • Such timing element includes a shaft (FIGS. 3 and 4) that is mechanically rotated by direct connection with the engine (not shown) in a conventional manner.
  • This shaft is illustrated in FIGS. 3 and 4 along with a rotor 21 that-is constructed of magnetically permeable material. It is attached to the shaft 20 for rotation therewith at all times, and it is in alignment with a top annular portion 24 of a stator 25.
  • the stator includes a lower disc-like portion 26 for completing a magnetic flux path through I the stator and rotor of the combined elements.
  • Stator includes a cylindrical magnet section 29 that provides a source of magnetic flux for the aforementioned flux path.
  • the magnetic flux might be provided by other means, e.g. by having an electromagnetic coil (not shown) with current flow therein.
  • an induction coil 32 that is situated in inductive relation to the magnetic field created by the flux through the foregoing flux path. Consequently, changes in flux density will generate an EMF in the coil 32.
  • rotor 21 includes a corresponding number of recessed portions 37 between the projections 36. These are provided so that during the rotation of shaft 20, when projections 36 are out of correspondence radially with the projections 33 (on the stator), there will be a very substantial air gap created in the flux path.
  • induction coil 32 is located in a flip-flop circuit 40 which includes a pair of transistors 41 and 42 that are connected in a known manner for creating a bi-stable oscillator that can be switched from one state to the other and will remain in either state until switched to the other.
  • Each stable state has one of the transistors 41 or 42 conducting while the other is cut off.
  • the foregoing flip-flop circuit 40 includes one branch circuit with a resistor-"45 that is connected between a source of 8+ voltage 44, i.e. the battery indicated in FIG. 1 and the collector electrode of the transistor 41.
  • the emitter of transistor 41 is part of the circuit. It is connected to one end of another resistor 46 that has the other end thereof connected to ground, as illustrated.
  • the other transistor 42 is connected in another branch circuit that leads from the B+ voltage source 44 through a pair of resistors 49 and 50 that are connected in series. This circuit leads to the collector electrode of the transistor 42. The circuit continues from the emitter element of transistor 42 and then it is con nected over via a circuit connection 53 to the same end of the resistor 46 as was the emitter of the other transistor 41. a
  • the base electrode of transistor 42 is connected to one end of a resistor 56 that has the other end thereof connected to ground, as illustrated.
  • the base of transistor 42 is also connected via a circuit wire 57 to one end of a resistor 60 that has a shunting capacitor 61 connected there across.
  • the other end of resistor 60 is connected over to the collector electrode of transistor 41 in the other branch.
  • transistor 41 there is a connection from the base electrode thereof to one end of a resistor 64 that has a shunting capacitor 65 connected there across.
  • the other end of resistor 64 is connected via a wire 66 back over to the collector electrode of the transistor 42.
  • a timing circuit that includes a unijunction transistor oscillator 82 (see FIG. 2).
  • This oscillator is made up of a unijunction transistor 83 that has itscontrol electrode connected between a resistor 86 and a capacitor 87 which are connected in series. These provide a time constant effect so that a pulse will be obtained after a predetermined time delay in case the engine has stopped as indicated above. Such pulse will cause the flip-flop circuit to be switched back so as to cut off the oscillator 11.
  • the other two electrodes of the unijunction transistor 83 are connected respectively to one end of each of two resistors 90 and 91.
  • Resistor 90 has the other end thereof connected via a circuit wire 94 to the B+ voltage source.
  • the other end of resistor 91 is connected to ground, as illustrated.
  • the oscillator 11 (FIG. 1) is controlled, turned on and off, by the flow of direct current through winding 12 of the timing transformer (core As long as no current flows, the oscillator will run and a spark is available. When current flows, the timing transformer is saturated and insufficient feedback is present for the oscillatorto oscillate. However, for the oscillator to start, the flow of current through the startstop winding 12 of the timing transformer (core 15) must be interrupted abruptly. Such interruption was accomplished with mechanical switching at the breaker points, in prior arrangements.
  • the transistors 41 and 42 and allied components compose a conventional flip-flop circuit with the exception of winding 32 which has replaced the conventional base to ground resistor of transistor 41.
  • the coil 32 is the pickup coil on the stator 25 that is associated with the timing shaft 20.
  • Zener diode 98 (FIG. 2) that is connected between the B+ voltage supply and ground. This is employed to regulate the amplitude of the B+ voltage and consequently a single electronic system may be used with different values of battery voltage.
  • the diode 71 is provided for preventing voltage induced in the control winding 12 (FIGS. 1 and 2) from damaging the transistor 70 (FIG. 2) during the time that the Jensen type oscillator 11 (FIG. 1) is running.
  • a.high frequency continuouswave ignition system for an internal combustion engine, said system employing a control winding for starting and stopping said high frequency continuous-wave energy, and having a shaft for timing said energy relative to said engine,
  • improved means for controlling current flow through said winding in accordance with a predetermined amount of shaft angle rotation comprising in combination electromagnetic means associated with said shaft for providing an initial pulse of one polarity and a terminal pulse of the opposite polarity separated by a predetermined degree of shaft angle rotation and both pulses for each cylinder of said engine, and
  • bistable oscillator means actuated by both said pulses for cutting off said current flow when said initial pulse appears and for restoring said current flow when said terminal pulse appears.
  • said rotor and said stator providing a permeable magnetic flux path having a gap therein and said coil being located in inductive relationship to said flux, and wherein said electronic'means comprises a flip-flop circuit having said coil connected therein.
  • circuit means for connecting said current flow control means to one branch of said flip-flop circuit.
  • circuit means comprises a PNP transistor connected to the base of said transistor.
  • said flip-flop circuit comprises a pair of transistors.
  • improved means for controlling current flow through said winding (a) in accordance with a predetermined amount of shaft (b) angle rotation comprising in combination c. a rotor of magnetically permeable material carried by said shaft (b) and having a plurality of radial projections with concentric arcuate extremities extending concentrically over an arc equal to said predetermined rotation angle,
  • stator of magnetically permeable material including a permanent magnet and a closed path for the magnetic flux which includes said rotor (c),
  • a flip-flop circuit comprising a pair of transistors and having said coil (f) connected therein for switching same
  • a unijunction transistor oscillator connected to one side of said flip-flop (g) for switching it (g) back to said other state after a predetermined time delay in case said engine stops with it (g) having been switched to said one state.
  • a high frequency continuous-wave ignition system for an internal combustion engine, said system employing a control winding for starting and stopping said high frequency continuous-wave energy, and having a shaft for timing said energy relative to said engine, improved means for controlling current flow through said winding in accordance with a predetermined amount of shaft angle rotation, comprising in combination means associated with said shaft for providing an initial pulse of one polarity and a terminal pulse of the opposite polarity separated by a predetermined degree of shaft angle rotation and both pulses for each cylinder of said engine, and
  • bistable oscillator means actuated by both said pulses for cutting off said current flow when said initial pulse appears, and for restoring said current flow when said terminal pulse appears.

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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)
  • Electromagnetism (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)
US00067450A 1970-08-27 1970-08-27 High frequency continuous-wave ignition energy for an internal combustion engine Expired - Lifetime US3853106A (en)

Priority Applications (13)

Application Number Priority Date Filing Date Title
US00067450A US3853106A (en) 1970-08-27 1970-08-27 High frequency continuous-wave ignition energy for an internal combustion engine
CA116086A CA938996A (en) 1970-08-27 1971-06-18 High frequency continuous-wave ignition energy for an internal combustion engine
GB3292171A GB1308750A (en) 1970-08-27 1971-07-14 High frequency continuous-wave ignition system for an internal combustion engine
ZA714724A ZA714724B (en) 1970-08-27 1971-07-16 High frequency continuous-wave ignition energy for an internal combustion engine
AU31593/71A AU457965B2 (en) 1970-08-27 1971-07-23 High frequency continuous-wave ignition system foran internal combustion engine
NL7110971A NL7110971A (enExample) 1970-08-27 1971-08-10
BR5202/71A BR7105202D0 (pt) 1970-08-27 1971-08-12 Sistema de ignicao
ES394367A ES394367A1 (es) 1970-08-27 1971-08-19 Sistema de encendido de onda continua a alta frecuencia pa-ra motor de combustion interna.
DE19712141778 DE2141778C3 (de) 1970-08-27 1971-08-20 Zündvorrichtung für Brennkraftmaschinen
SE7110783A SE375131B (enExample) 1970-08-27 1971-08-25
FR7130947A FR2102032A5 (enExample) 1970-08-27 1971-08-26
CH1248971A CH529294A (de) 1970-08-27 1971-08-26 Zündanordnung für Verbrennungsmotoren
HK280/76*UA HK28076A (en) 1970-08-27 1976-05-13 High frequency continuous-wave ignition system for an internal combustion engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00067450A US3853106A (en) 1970-08-27 1970-08-27 High frequency continuous-wave ignition energy for an internal combustion engine

Publications (1)

Publication Number Publication Date
US3853106A true US3853106A (en) 1974-12-10

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US00067450A Expired - Lifetime US3853106A (en) 1970-08-27 1970-08-27 High frequency continuous-wave ignition energy for an internal combustion engine

Country Status (12)

Country Link
US (1) US3853106A (enExample)
AU (1) AU457965B2 (enExample)
BR (1) BR7105202D0 (enExample)
CA (1) CA938996A (enExample)
CH (1) CH529294A (enExample)
ES (1) ES394367A1 (enExample)
FR (1) FR2102032A5 (enExample)
GB (1) GB1308750A (enExample)
HK (1) HK28076A (enExample)
NL (1) NL7110971A (enExample)
SE (1) SE375131B (enExample)
ZA (1) ZA714724B (enExample)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4128082A (en) * 1977-03-18 1978-12-05 Toyota Jidosha Kogyo Kabushiki Kaisha Electronic fuel injection control device
US4192275A (en) * 1976-11-03 1980-03-11 Weydemuller Donald C Electronic ignition system
EP0012784A1 (fr) * 1978-12-27 1980-07-09 SORECO Holding S.A. Dispositif d'allumage électronique haute-fréquence pour moteur à combustion interne
US4291661A (en) * 1977-07-05 1981-09-29 Gerry Martin E Inductive-capacitive modulated ignition system
EP0076983A1 (en) * 1981-10-01 1983-04-20 Mitsubishi Denki Kabushiki Kaisha Breakerless ignition system for internal combustion engines
EP0076982A1 (en) * 1981-10-01 1983-04-20 Mitsubishi Denki Kabushiki Kaisha Ignition system for internal combustion engines
EP0077483A1 (en) * 1981-10-01 1983-04-27 Mitsubishi Denki Kabushiki Kaisha Ignition circuit for internal combustion engines
US4516557A (en) * 1981-08-10 1985-05-14 Mitsubishi Denki Kabushiki Kaisha Ignition apparatus for internal combustion engine
US4733646A (en) * 1986-04-30 1988-03-29 Aisin Seiki Kabushiki Kaisha Automotive ignition systems

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2581636B1 (fr) * 1985-05-07 1988-05-06 Audureau Sa Equipement de chariot elevateur permettant le levage et l'avancee de la charge

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3356896A (en) * 1964-12-16 1967-12-05 Motorola Inc Electronic device
US3407795A (en) * 1966-06-02 1968-10-29 Texaco Inc Ignition system for internal combustion engines
US3575153A (en) * 1968-11-18 1971-04-20 Eltra Corp Regulated voltage converter
US3593696A (en) * 1968-02-29 1971-07-20 Consiglio Nazionale Ricerche Electronic ignition system for producing high frequency spark trains for internal combustion engines

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3356896A (en) * 1964-12-16 1967-12-05 Motorola Inc Electronic device
US3407795A (en) * 1966-06-02 1968-10-29 Texaco Inc Ignition system for internal combustion engines
US3593696A (en) * 1968-02-29 1971-07-20 Consiglio Nazionale Ricerche Electronic ignition system for producing high frequency spark trains for internal combustion engines
US3575153A (en) * 1968-11-18 1971-04-20 Eltra Corp Regulated voltage converter

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4192275A (en) * 1976-11-03 1980-03-11 Weydemuller Donald C Electronic ignition system
US4128082A (en) * 1977-03-18 1978-12-05 Toyota Jidosha Kogyo Kabushiki Kaisha Electronic fuel injection control device
US4291661A (en) * 1977-07-05 1981-09-29 Gerry Martin E Inductive-capacitive modulated ignition system
EP0012784A1 (fr) * 1978-12-27 1980-07-09 SORECO Holding S.A. Dispositif d'allumage électronique haute-fréquence pour moteur à combustion interne
US4516557A (en) * 1981-08-10 1985-05-14 Mitsubishi Denki Kabushiki Kaisha Ignition apparatus for internal combustion engine
EP0076983A1 (en) * 1981-10-01 1983-04-20 Mitsubishi Denki Kabushiki Kaisha Breakerless ignition system for internal combustion engines
EP0076982A1 (en) * 1981-10-01 1983-04-20 Mitsubishi Denki Kabushiki Kaisha Ignition system for internal combustion engines
EP0077483A1 (en) * 1981-10-01 1983-04-27 Mitsubishi Denki Kabushiki Kaisha Ignition circuit for internal combustion engines
US4733646A (en) * 1986-04-30 1988-03-29 Aisin Seiki Kabushiki Kaisha Automotive ignition systems

Also Published As

Publication number Publication date
NL7110971A (enExample) 1972-02-29
AU3159371A (en) 1973-01-25
HK28076A (en) 1976-05-21
SE375131B (enExample) 1975-04-07
AU457965B2 (en) 1975-02-13
BR7105202D0 (pt) 1973-06-07
GB1308750A (en) 1973-03-07
FR2102032A5 (enExample) 1972-03-31
ES394367A1 (es) 1973-12-01
ZA714724B (en) 1972-11-29
CH529294A (de) 1972-10-15
DE2141778B2 (de) 1975-10-02
DE2141778A1 (de) 1972-03-02
CA938996A (en) 1973-12-25

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