US3779226A - High frequency continuous wave ignition system - Google Patents

High frequency continuous wave ignition system Download PDF

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Publication number
US3779226A
US3779226A US00232094A US3779226DA US3779226A US 3779226 A US3779226 A US 3779226A US 00232094 A US00232094 A US 00232094A US 3779226D A US3779226D A US 3779226DA US 3779226 A US3779226 A US 3779226A
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United States
Prior art keywords
oscillator
ignition
control winding
ignition switch
circuit
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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
US00232094A
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English (en)
Inventor
R Canup
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Texaco Inc
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Texaco Inc
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Filing date
Publication date
Application filed by Texaco Inc filed Critical Texaco Inc
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Publication of US3779226A publication Critical patent/US3779226A/en
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    • 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
    • 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
    • F02P3/0421—Opening or closing the primary coil circuit with electronic switching means with electronic tubes

Definitions

  • This invention concerns ignition systems for internal combustion engines, generally. More specifically, it relates to an improvement that is of concern particularly in relation to high-frequency continuous-wave ignition systems.
  • this invention deals with a high-frequency continuous-wave ignition system foran internal combustion engine.
  • Said system includes an oscillator for supplying continuous-wave controlled-duration spark energy, and the said oscillator has a control winding for starting and stopping the oscillator at the beginning and end of each spark interval.
  • the system also includes means controlled by said engine for cutting off and supplying a DC bias current to said control winding, and an ignition switch for controlling energization of said ignition system including said DC bias current circuit.
  • the invention concerns the improvement that comprises circuit means for energizing said oscillator without passing through said ignition switch.
  • the invention relates to a highfrequency continuous-wave ignition system for an internal combustion engine
  • said system includes an oscillator for supplying continuous-wave controlledduration spark energy.
  • the said oscillator has a control winding for starting and stopping the oscillator at the beginning and end of each spark interval, and it has means for control by said engine for cutting off and applying DC bias current to said control winding.
  • the oscillator also has an ignition switch having a pair of ganged poles and a pair of off-position contacts for controlling energization of said ignition system, including said DC bias current circuit.
  • the invention concerns the improvement that comprises a permanent direct connection for energizing said oscillator, and first cirucit connections from the end of said control winding to said ganged poles, as
  • the invention concerns a highfrequency continuous-wave ignition system for an internal combustion engine which comprises, in combination, an oscillator for supplying continuous-wave controlled-duration spark energy.
  • the said oscillator has a control winding for starting and stopping the oscillator at the beginning and end of each spark interval. It also comprises means controlled by said engine for cutting off and supplying a DC bias current to said control winding, and an ignition switch that, in turn, comprises a pair of ganged poles and a pair of off-position contacts.
  • the combination also comprises means for grounding said control winding when said ignition switch is off, which includes circuit connections from said contacts to ground.
  • FIGURE is a schematic circuit diagram illustrating a system according to the invention.
  • ignition-switch control is provided in such manner that the power-supply connection to the oscillator may be permanent and, consequently, it can physically bypass the long distance required to go from the battery to the ignition-switch location and back to the engine where the ignition oscillator is located.
  • the system illustrated in this application includes the single transfonner 11 which has a secondary or output winding 12.
  • Winding I2 is connected to ground at one end, as illustrated.
  • the other end of the winding 12 is connected to the distributor cap of an internal combustion engine via a connector 13.
  • This is indicated by the caption TO DIST. CAP.
  • Input of high-frequency continuous-wave energy is supplied to the transformer 11 by an oxcillator 16.
  • Oscillator 16 includes a centertapped primary winding 17 for supplying the input energy to induce the high-voltage output in winding 12. Details of the operation of oscillator 16 are not necessary to an understanding of this invention, and therefore reference may be had to the foregoing three copending applications for such details.
  • the oscillator and ignition system of this invention include on the transformer a control winding 20.
  • This winding 20 has a DC bias current supplied therethrough in such manner as to insure the instant starting of the oscillator 16 when such current is interrupted.
  • starting network 21 that is shown enclosed in dashed lines. This is only applicable to the case where the spark intervals are controlled by breaker points, although the invention may be applied also to ignition systems employing other engine-controlled switching in the circuit of the control winding 20.
  • this invention is just as applicable to an ignition system that employs nonbreaker-point engine-controlled switching in the control winding circuit.
  • Ser. No. 193,909 filed Oct. 29, 1971
  • Ser. No. 209,060 filed 12/17/1971, (DNo.72,547).
  • the starting network 21 would be eliminated and a breakerless engine-controlled arrangement (not shown) would replace the breaker points 23.
  • a three-pole ganged switch 36 that has four different position-switch contacts cooperating with each pole.
  • the numbers for these positions are arbitrarily assigned, going from left to right in the drawing illustration.
  • the second position is that illustrated in the drawing with the ganged switch arms in contact therewith.
  • the third and fourth positions are for each of the running and starting operations, respectively.
  • In the illustrated circuit there is a contact 39 that has a circuit connection 40 leading therefrom, which goes to the starting solenoid (not shown), as is indicated by the caption.
  • a spring bias (not shown) on the fourth position so that as soon as the engine starts, the switch is released, and it returns automatically to the third position.
  • a contact 43 on the uppermostbank is connected to the high-voltage side of the battery 33 via a circuit connector 44. Consequently, when the ignition switch is in the third, or run" position, the battery 33 is connected via a connector 45, and the connector 44 to the contact 43. From there, a circuit will be continued over an arm 48 of the ignition switch to a circuit connector 49.
  • the connector 49 leads to one end of the control winding 20 via a resistor 50. The other end of the winding 20 is connected to the circuit, as indicated above, that leads to the breaker points 23 or to the alternative (not shown) enginecontrolled circuit element that determines when this DC bias circuit from the battery 33 will be broken.
  • the same enginecontrolled switching element (or breaker points 23) will determine the termination of the oscillation when the switching element is closed again.
  • the system acts in the same manner as has been described in my earlier applications, with the sparkduration oscillating periods under control of the engine-operating elements in a usual manner, except that the oscillator 16 is not getting its power supply through the ignition switch 36.
  • This added circuit includes, in addition to the circuit connector 49 and switch arm 48, a circuit connector 52.
  • Connector 52 joins an of contact 53 of the ignition switch 36 with an auxiliary contact 54. Also connected to contact 54, there is a circuit connector 55 that leads to another switch arm 56 of the ignition switch 36.
  • switch arm 56 When the switch arm 56 is in either the auxiliary or off (second) positions, it contacts one or the other of switch contacts 60 or 61. Both of these contacts 60 and 61 have a circuit connector 62 joined therewith. Consequently, a circuit connection is completed to the other end of the control winding 20 in either of the first or second ignition-switch positions.
  • the foregoing circuit i.e., through ignition switch 36, applies a direct short-circuit across control winding 20 whenever the switch is in its off or auxiliary positions. Also, both ends of the winding 20 are grounded by having a connector 65 that is connected into the connector 55 so that the switch arm 56 is always grounded while there is, in addition, a diode 66 connected between the upper end (as illustrated) of the winding 20 and ground. These connections insure the cut-off and maintenance of the oscillator 16 in its nonoscillating state.
  • the circuit that includes the contacts of ignition switch 36 may employ relatively light-gauge wiring since the DC bias current as well as the short-circuiting currents for control winding 20 are both low-current conditions on the order of a few milliamperes.
  • the current required for the oscillator averages in the neighborhood of ten amperes with peak currents as-high as fifty amperes..
  • a high-frequency continuous-wave ignition system for an internal combustion engine, said system including an oscillator for supplying continuous-wave controlled-duration spark energy, said oscillator having a power supply and a control winding for starting and stopping the oscillator at the beginning and end of each spark interval, means controlled by said engine for cutting off and supplying a DC bias current to said control winding, and an ignition switch for controlling energization of said ignition system including said DC bias current circuit, the improvement comprising circuit means including a permanent direct connection for energizing said oscillator without passing through said ignition switch.
  • grounding means comprises circuit connections from said contacts to ground.
  • a high-frequency continuous-wave ignition system for an internal combustion engine, said system including an oscillator for supplying continuous-wave controlled-duration spark energy, said oscillator having a power supply and a control winding for starting and stopping the oscillator at the beginning and end of each spark interval, means controlled by said engine for cutting off and supplying a DC bias current to said control winding, and an ignition switch having a pair of ganged poles plus a pair of off-position contacts for controlling energization of said ignition system including said DC bias current circuit, the improvement comprising a permanent direct connection for energizing said oscillator without passing through said ignition switch, first circuit connections from the ends of said control winding to said ganged poles, and second circuit connections from said off-position contacts to ground.
  • a high-frequency continuous-wave ignition for an internal combustion engine comprising in combination an oscillator having a power supply and a control winding for starting and stopping the oscillator at the beginning and end of each spark interval, means controlled by said engine for cutting off and applying a DC bias current to said control winding, an ignition switch for controlling energization of said ignition system including a DC bias current circuit but excluding said power supply, and circuit means including a permanent direct connection for energizing said oscillator without passing through said ignition switch.
  • said ignition switch comprises a pair of ganged poles, and a pair of off position contacts, and wherein said grounding means comprises circuit connections from said contacts to ground.

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  • 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)
US00232094A 1972-03-06 1972-03-06 High frequency continuous wave ignition system Expired - Lifetime US3779226A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US23209472A 1972-03-06 1972-03-06

Publications (1)

Publication Number Publication Date
US3779226A true US3779226A (en) 1973-12-18

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ID=22871851

Family Applications (1)

Application Number Title Priority Date Filing Date
US00232094A Expired - Lifetime US3779226A (en) 1972-03-06 1972-03-06 High frequency continuous wave ignition system

Country Status (12)

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US (1) US3779226A (en, 2012)
JP (1) JPS5419942B2 (en, 2012)
AU (1) AU463839B2 (en, 2012)
BR (1) BR7301622D0 (en, 2012)
CA (1) CA979064A (en, 2012)
CH (1) CH546889A (en, 2012)
FR (1) FR2175059B1 (en, 2012)
GB (1) GB1389962A (en, 2012)
IT (1) IT981131B (en, 2012)
NL (1) NL163308C (en, 2012)
SE (1) SE402151B (en, 2012)
ZA (1) ZA73797B (en, 2012)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3926557A (en) * 1972-08-21 1975-12-16 Kyberna Gmbh Ignition device for internal combustion engines
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
US3576201A (en) * 1969-04-21 1971-04-27 Massey Ferguson Inc Tree-choking apparatus

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3020904A (en) * 1958-10-20 1962-02-13 Holley Carburetor Co Transistor ignition system
US3299875A (en) * 1964-10-12 1967-01-24 Ford Motor Co Ignition system
US3407795A (en) * 1966-06-02 1968-10-29 Texaco Inc Ignition system for internal combustion engines

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3020904A (en) * 1958-10-20 1962-02-13 Holley Carburetor Co Transistor ignition system
US3299875A (en) * 1964-10-12 1967-01-24 Ford Motor Co Ignition system
US3407795A (en) * 1966-06-02 1968-10-29 Texaco Inc Ignition system for internal combustion engines

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3926557A (en) * 1972-08-21 1975-12-16 Kyberna Gmbh Ignition device 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
DE2260805A1 (de) 1973-09-13
NL7301825A (en, 2012) 1973-09-10
AU5275373A (en) 1974-09-05
AU463839B2 (en) 1975-08-07
CH546889A (de) 1974-03-15
ZA73797B (en) 1974-06-26
FR2175059A1 (en, 2012) 1973-10-19
SE402151B (sv) 1978-06-19
NL163308B (nl) 1980-03-17
DE2260805B2 (de) 1976-07-15
GB1389962A (en) 1975-04-09
NL163308C (nl) 1980-08-15
FR2175059B1 (en, 2012) 1977-12-30
BR7301622D0 (pt) 1974-05-16
CA979064A (en) 1975-12-02
JPS5419942B2 (en, 2012) 1979-07-19
IT981131B (it) 1974-10-10
JPS4912240A (en, 2012) 1974-02-02

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