Abstract: A multi-strike spark discharge system which is combined with an internal combustion engine to produce a plurality of high voltage discharges across the spark gap of the engine. A timing signal associated with the engine is treated and used to actuate a duration control circuit which in turn actuates a repetition rate control circuit thereby controlling the duration and frequency of the discharges across the spark gap. At low rpm the repetition rate control apparatus provides several multi-discharges which enhances the combustion process and improves the operation of the combination.

Abstract: Jet engine fuel igniters are excited with a current waveform which maintains an intermediate current value until a discharge has separated from the igniter surface. The current then rises to a higher level to provide sufficient energy for ignition of an air-fuel mixture. Ignition reliability is thus increased and the effects of erosion on the igniter surface are decreased.

Abstract: An igniter for the air/fuel mixture used in the cylinders of an internal combustion engine employs a conventional spark to initiate the discharge of a large amount of energy stored in a capacitor. A high current discharge of the energy in the capacitor switched on by a spark discharge produces a plasma and a magnetic field. The resultant combined electromagnetic current and magnetic field force accelerates the plasma deep into the combustion chamber thereby providing an improved ignition of the air/fuel mixture in the chamber.

Abstract: The embodiments of the breakerless magneto device disclosed herein have a rotor with a permanent magnet imbedded in the periphery thereof which acts in cooperation with the first and second magneto cores to generate a varying flux field in the cores. The first core has a first winding mounted thereon and the second core, which is mounted next adjacent the first core but insulated therefrom, has a second winding mounted thereon. The first winding therefore encompasses the first core, the second core, and the second winding. The second winding provides a trigger pulse to a solid state device which interrupts the current in the first winding, at or near its maximum value, thereby collapsing the flux field in the first core. This causes a high voltage to be induced in the secondary winding of the magneto coil which is applied to the spark gap for fuel ignition. Stable and proper spark timing is achieved with this device.

Abstract: An internal combustion engine ignition device of the capacitive discharge type which utilizes a single transistor, semi-conductive controlled rectifier and attendant reactive circuitry to provide timed high voltage application to create a direct current arc, or plasma, at the spark discharge devices. The circuit is actuated by closure of the contact points to energize a transistor to operate in a Class D amplifier mode that, in turn, enables conduction through the primary of a transformer, the secondary of which places increased voltage charge on a capacitor to a predetermined charge level. Thereafter, opening of the contact points causes conduction of the semi-conductive controlled rectifier which allows discharge of the charged capacitor through a current steering bridge to the ignition coil to enable application of high voltage for establishing a direct current arc, or plasma, at the spark discharge device.

Abstract: Welding arc stabilizing and igniting is effected with at least one pulse-forming condenser switched by spark gap or semiconductor switch to deliver a sharp discharge pulse through the winding of a pulse transformer, the magnetic energy thus built up in the transformer being then dissipated by a unidirectional diode bypass of the winding through the switch. The pulses are delivered by the transformer to the welding electrodes, and can be combined with pulses of lower voltage and longer duration by an appropriate series condenser-resistor combination in the transformer output. The pulse-forming condenser can be charged by simple resistor connection to the input of a step-down welding current transformer, or by transformer coupling to any source of AC welding current.

Abstract: A capacitor discharge ignition system for a jet engine which has a relatively high power factor at the transformer input without exceeding the one ampere current rating required in jet ignition systems at the desired power level. A specially designed power transformer (10 ) has a capacitor (3) connected across closely coupled primary and tertiary windings (11 and 12).

Abstract: The present circuit arrangement for generating a high voltage for the spark plugs of an internal combustion engine, includes an ignition coil having a secondary winding coupled to the spark plugs. One end of the primary winding of the coil is connected to one terminal of a battery by a conventional contact breaker. A capacitor and first switch are connected in that order between the other end of the primary winding and the other terminal of the battery. A diode is connected in parallel with the capacitor and first switch. A second switch is connected between the first terminal of the battery and the junction of the capacitor and the second switch. The first switch opens and closes in synchronism with the contact breaker. The second switch is open when the contact breaker is closed, and vice versa. The circuit functions as a voltage doubler whereby the voltage applied to the primary winding is doubled as compared to the battery voltage.

Abstract: A capacitive discharge type ignition system is arranged for selective operation by timing signals generated by either breaker points or a breakerless timing signal generator. The generator utilizes the signal generated by an inductive pickup to modulate an oscillator output. The modulation signal is detected and by use of a peak point detector and converted to accurate timing pulses. Circuitry is included to bias the oscillator in a linear mode and inhibit timing signal generation at turn on until the oscillator is operating stably.

Abstract: The visibility of warning lights employing flash tubes is enhanced by control circuitry which generates closely spaced trigger pulse pairs for energizing the tubes to thereby produce double flashes. Noticeability of the warning light may be enhanced by addition thereto of a noise maker which operates off the same power supply that provides a high voltage for operating the flash tube or tubes.

Abstract: An internal combustion engine ignition device of the capacitive discharge type which utilizes a single transistor, semi-conductive controlled rectifier and attendant reactive circuitry to provide timed high voltage application to create a direct current arc, or plasma, at the spark discharge devices. The circuit is actuated by closure of the contact points to energize a transistor to operate in a Class D amplifier mode that, in turn, enables conduction through the primary of a transformer, the secondary of which places increased voltage charge on a capacitor to a predetermined charge level. Thereafter, opening of the contact points causes conduction of the semi-conductive controlled rectifier which allows discharge of the charged capacitor through a current steering bridge to the ignition coil to enable application of high voltage for establishing a direct current arc, or plasma, at the spark discharge device.

Abstract: An ignition system having capacitive storage of energy required for developing ignition pulses, particularly in Otto and Wankel engines, includes a capacitive storage arrangement, a charging circuit connected between the capacitive storage arrangement and a direct current supply for charging the capacitive storage arrangement, and an ignition transformer coupled to the capacitive storage arrangement via a thyristor switching arrangement for temporarily discharging the capacitive storage arrangement through the ignition transformer to develop pulses therein for application to spark plugs or the like.

Abstract: A solid state ignition system particularly adapted for use in igniting fuel oil, the system including plasma generator means, electronic trigger means and electronic brake means and being effective to produce an improved ionization arc between electrodes for the purpose of initiating fuel oil combustion.

Abstract: The invention relates to an ignition system for an internal combustion engine, comprising a d.c.-d.c. converter coupled to the vehicle battery, a storage capacitor, an inductor, a thyristor, a delay line and an ignition transformer. The delay line operates as buffer storage means to prevent the storage capacitor and converter from being grounded during each ignition cycle, so that a plurality of abrupt, high voltage ignition pulses of predetermined width may be supplied to the ignition transformer from a battery with a low supply voltage, thus ensuring the engine starting in improved conditions.

Abstract: An ignition circuit of the capacitor discharge type is disclosed for internal combustion engines. The circuit comprises a transistor inverter which supplies a voltage doubler to charge a storage capacitor. The storage capacitor is connected to an ignition coil through a thyristor. Control means for the thyristor includes engine breaker points or equivalent for alternately preventing and enabling turn-on of the thyristor. A voltage divider provides gate triggering current to the thyristor on each cycle of the voltage supply. This produces either single or multiple ignition pulses for each breaker point cycle, depending upon the engine speed. The voltage divider includes a leakage resistor to limit the initial pulse and to allow current flow through the breaker points and also includes an isolation resistor to render the triggering point of the thyristor immune to changes in the breaker point circuit.

Abstract: A capacitance discharge type breakerless ignition system for an internal combustion engine, comprising ignition coil means including a main and an auxiliary primary coils and a secondary coil, capacitance means including two capacitances connected to said main and auxiliary primary coils, respectively to be charged by a charging voltage and at least one ignition plug connected to said secondary coil, time constants of said connections of said main primary coil and said corresponding capacitance and of said auxiliary primary coil and said corresponding capacitance when said capacitances are simultaneously discharged through said main and auxiliary primary coils being different from each other whereby said ignition plug is sparkingly discharged for a longer continuation time.

Abstract: An ignition system for internal combustion engines, in which a spark is produced across a spark plug gap when a capacitor is discharged through a primary winding of an ignition coil.As a switching means for energizing and deenergizing the primary winding of the ignition coil a transistor is used, and also a time constant circuit for controlling the transistor is provided. At the time of producing a spark by rendering the transistor conductive, electromagnetic energy is stored in the primary winding of the ignition coil. When the transistor is subsequently cut off by the action of the afore-mentioned time constant circuit, a second spark is produced with the electromagnetic energy stored in the primary winding.

Abstract: The energizing circuit of one of the primary windings of an ignition coil having at least two primary windings and a secondary winding is interrupted in timed relationship with the engine whereby a high ignition arc-creating potential is induced in the secondary winding upon each interruption of the primary winding energizing circuit. Upon each interruption of the primary winding energizing circuit, a monostable multivibrator circuit is triggered to the alternate state in which a potential signal is present upon the output circuit thereof and an electrical switching device is triggered conductive to complete a discharge circuit for an ignition capacitor through the other ignition coil primary winding.

Abstract: An ignition device for an internal combustion engine which comprises a DC-DC converter for stepping up battery voltage; a capacitor charged with output from said DC-DC converter; an SCR for discharging the electric energy stored in the capacitor through the primary side of an ignition coil; a circuit for igniting the SCR according to the operating condition of a contact breaker; a bias voltage source for rectifying output voltage from bias voltage generating winding fitted to the oscillation voltage stepup transformer of the DC-DC converter and impressing the resultant negative output on the SCR gate and the resultant positive output of the SCR cathode; a transformer type coupling circuit connected between a circuit included in the DC-DC converter to generate high rectified output voltage and the capacitor, thereby coupling the DC-DC converter with the capacitor, wherein the transformer type coupling circuit prevents excess load from being applied on the DC-DC converter when the SCR is rendered conducting and

Abstract: A single-transformer high-frequency continuous-wave ignition system for an internal combustion engine. It employs a solid-state oscillator with a control winding for starting and stopping the oscillator, as timed by the engine. There is a D.C. bias current applied to the control winding. Cutting off the D.C. current ensures instantaneous starting of the oscillator, and an A.C. short circuit ensures stopping thereof.

Abstract: A pulse discharge electronic control circuit for providing an output signal of predetermined electrical energy and duration for engine ignition, missile firing or the like, the circuit having no moving parts and including means for producing electrical oscillations, means for storing the electrical energy thereof, and means for discharging the stored energy through a load, means also being included for providing high and low voltage output, alternating and regulated current output, and regulated voltage output and for converting alternating to direct current at a higher or lower level than the input signal at a theoretical one hundred percent efficiency.

Abstract: A pulse generating system especially adapted for use in ignition systems of internal combustion engines including a solid state pulse triggering circuit for controlling spark timing and in which the timing is advanced with increased engine speed and can be changed independently of engine speed by a voltage biasing means. The triggering circuit can be programmed to provide any desired spark timing and can be controlled in response to a condition, such as engine fuel, temperature, pressure or other parameter.

Abstract: A system of capacitive discharge ignition for automobile vehicles with a converter governed by a multi-vibrator, maintains constantly the maximum working current in the power circuit, independently of the feed voltage, by the control of the time of commutation of the multi-vibrator, by using a diode of the Zener type. The diode is connected in parallel with the collector-emitter section of the transistor of the multi-vibrator which is normally shorted to charge the commutation condenser at a fixed voltage which is lower than the lowest value of the voltage of utilization. A transistor with a battery sensor circuit short-circuits part of the resistance of the charging circuit of the condenser when the voltage is higher than a pre-fixed value.

Abstract: The invention relates to systems comprising a triggering element such as a thyristor triggered from a relaxation oscillator and relates more particularly to an electrical igniter.In this system means are provided for ensuring the automatic decrease of the intensity of the triggering pulses supplied by the oscillator so that triggering automatically stops after a predetermined time. These means comprise a timing mechanism formed by a resistance inserted in series in the discharge circuit of the oscillator with a capacitor and diode in parallel on the said resistance, the diode being oriented so as to charge the capacitor under the action of pulses supplied by the oscillator.The invention can be applied to an igniter for gas burners.