Abstract: An embodiment system for controlling an ignition coil includes a first ignition coil including a first primary coil and a first secondary coil, a second ignition coil including a second primary coil and a second secondary coil, a spark plug including a pair of electrodes configured to generate a spark discharge by a discharge current generated by the first ignition coil and the second ignition coil, and a controller configured to selectively perform a multi-stage ignition through the first ignition coil and the second ignition coil or a single-stage ignition through the first ignition coil or the second ignition coil depending on an operation region of an engine and, in response to a misfire occurring in the engine while performing the multi-stage ignition, to adjust a number of ignitions or a dwell time.

Abstract: In an ignition apparatus, a controller outputs a discharge start signal instructing a start of a discharge in the spark plug, and a discharge control signal instructing control of a discharge current in the spark plug after the start of the discharge. A signal line connects between the controller and a control circuit. The discharge start signal and the discharge control signal are transferred from the controller to the control circuit via the signal line. The controller modulates, based on the plural command values, the discharge control signal such that the modulated discharge control signal includes information representing the plural command values and change timings for the respective command values. The control circuit controls, based on the discharge start signal and the modified discharge control signal, the energization circuit to thereby adjust the discharge current to each of the command values at a corresponding one of the change timings.

Abstract: An ignition coil includes primary and secondary coils, a center core inserted into a center hole of the primary coil and a center hole of the secondary coil, an annular side core that forms a magnetic circuit through which a first magnetic flux A generated by the primary coil by being joined to the center core permeates, and a permanent magnet that is disposed between the center core and the side core and that emits a second magnetic flux B directed opposite to the first magnetic flux A to apply a magnetic bias. The side core includes protruded portions that protrude towards lateral sides of a T-shaped horizontal portion of the center core, and gaps are provided between the lateral sides of the T-shaped horizontal portion of the center core and the protruded portions of the side core.

Abstract: An ignition coil includes primary and secondary coils, a center core inserted into a center hole of the primary coil and a center hole of the secondary coil, an annular side core that forms a magnetic circuit through which a first magnetic flux A generated by the primary coil by being joined to the center core permeates, and a permanent magnet that is disposed between the center core and the side core and that emits a second magnetic flux B directed opposite to the first magnetic flux A to apply a magnetic bias. The side core includes protruded portions that protrude towards lateral sides of a T-shaped horizontal portion of the center core, and gaps are provided between the lateral sides of the T-shaped horizontal portion of the center core and the protruded portions of the side core.

Abstract: According to an ignition device, a first switching unit applies a voltage between electrodes of by spark plug by turning on/off energization from an on-vehicle battery to a primary coil. Further, a second switching unit applies a voltage having the same direction as a spark discharge generated by turning on/off the first switching unit between the electrodes of the spark plug by supplying electrical energy accumulated in a booster circuit into a primary coil. Accordingly, it is possible to greatly reduce a complexity of the on/off switching of the first and second switching units compared to a conventional technology.

Abstract: This disclosure provides an ignition coil for a spark ignited internal combustion engine. The ignition coil includes a coil body having an outer surface and internal windings coupled to a connector. The ignition coil also includes a housing surrounding the coil body. The housing has an outer wall spaced apart from the outer surface of the coil body thereby forming a gap between the outer surface of the coil body and the outer wall. The outer wall includes an opening in flow communication with the gap.

Abstract: An ignition system for an internal combustion engine includes an ignition transformer with two primary windings. The ignition system is designed to generate, for a given ignition event, a unipolar current through the secondary winding by way of a control circuit that is configured to first energize and deenergize the first primary winding to establish a first electrical arc across the spark-plug electrodes and, when the current in the secondary winding reaches, or drops below, a current threshold, repeatedly energizes and deenergizes the second primary winding to establish a plurality of second current pulses across the electrodes in order to maintain the burn phase.

Abstract: The present invention features an ignition coil of an engine, in which a small condenser is directly installed to an LV pin of the ignition coil, thus effectively removing noise, and dissipating heat from the ignition coil to an outside, in addition to preventing the inflow of water.

Abstract: According to one embodiment, an internal combustion engine ignition system, including: a plurality of spark coils each having a primary coil and a secondary coil, each secondary coil being coupled to a common spark plug to apply a high voltage thereto; a plurality of primary current generation module provided correspondingly with the spark coils and configured to asynchronously generate primary currents respectively flowing through the primary coils; one or a plurality of primary current detection module configured to detect each of the primary currents; and a primary current control module configured to adjust an output power supplied to each primary coil in accordance with a change in the primary current to thereby control an increase rate of the primary current.

Abstract: The plasma ignition device includes an ignition plug, a breakdown discharge circuit configured to apply a high voltage to the ignition plug to cause a breakdown discharge in a discharge space in the ignition plug, and a plasma discharge circuit configured to accumulate electric energy supplied from a power supply and applies the accumulated electric energy to the ignition plug as a current to bring a gas in the discharge space into a plasma state so that the gas in the plasma state is injected to a combustion chamber of an combustion engine during the breakdown discharge in order to cause ignition. The plasma discharge circuit includes an energy accumulating section, and an energy supplying section configured to supply the electric energy to the energy accumulating section during a short time period immediately before the breakdown discharge circuit applies the first voltage to the ignition plug.

Abstract: An ignition system for an internal combustion engine includes an igniter having at least two high voltage (HV) electrodes and a low voltage (LV) electrode. The at least two HV electrodes are electrically isolated one from the other and the at least two HV electrodes are electrically isolated from the LV electrode. The system includes a coil assembly having at least one primary winding and at least two secondary windings, each secondary winding having a terminal for providing a HV signal. A driver module is provided for energizing the coil assembly. A high-tension cable, comprising at least two resistive wires, connects the at least two HV electrodes to the terminals of respective ones of the at least two secondary windings. The high-tension cable further comprises a non-resistive wire connecting the LV electrode to the driver module.

Abstract: A system for inductive contactless power transfer between a first vehicle part and at least one collector that can be variably positioned relative to the first vehicle part in a passenger cabin of a vehicle includes primary windings (P1-PN) that with secondary windings (S1, S2) on collectors or second vehicle parts can form a transducer. Depending on operating-mode switching of the vehicle, the operation of collectors is prevented, which collectors for the purpose of providing electrical power for operating external cleaning or maintenance devices are brought into the vehicle. Because of the expansion of the function of an existing contactless power and data transfer system, the system is particularly cost-effective and flexible, and in addition is of a very lightweight design.

Abstract: An ignition system for an internal combustion engine that utilizes a single primary coil and a single secondary coil to drive a pair of spark plugs. Current flowing in both a first direction and a second direction passes through the primary coil. The current flowing through the primary coil induces corresponding current in the secondary coil, which flows from the secondary coil to one of two spark plugs. Each spark plug is coupled to the secondary coil such that each of the two spark plugs receives current flowing only in a single direction. The current flowing through the ignition system can be from either a power source or created by the rotation of a flywheel having a series of magnet clusters.

Abstract: An ignition coil assembly and a method of assembling the ignition coil assembly including a first spool, a first coil, and a second spool. The first coil is wound around a first spool outer surface. The first spool and the first coil are disposed within a cavity of the second spool and an electrically insulating material injected into an annular space defined between a first coil outer surface and a second spool inner surface. The first spool is configured to allow a decrease of a circumference of the first spool when the first coil is wound around an outer surface of the first spool. Decreasing the circumference of the first spool increases the annular space sufficient to inject the electrically insulating material into the annular space without creating substantial voids in the electrically insulating material.

Abstract: According to one embodiment, an internal combustion engine ignition system, including: a plurality of spark coils each having a primary coil and a secondary coil, each secondary coil being coupled to a common spark plug to apply a high voltage thereto; a plurality of primary current generation module provided correspondingly with the spark coils and configured to asynchronously generate primary currents respectively flowing through the primary coils; one or a plurality of primary current detection module configured to detect each of the primary currents; and a primary current control module configured to adjust an output power supplied to each primary coil in accordance with a change in the primary current to thereby control an increase rate of the primary current.

Abstract: An ignition apparatus includes a cylindrical core made from magnetically-permeable material and a C-shaped magnetic return path structure that is made from a stack of silicon steel laminations. A tightly controlled air gap is provided between one leg of the C-shaped structure and an end face of the core, forming a magnetic circuit having a high magnetic permeability, which overall reduces the number of primary winding turns needed, thereby reducing the amount of copper wire. In addition, the circular cross-section of the core reduces the mean length per turn (MLT) of the primary winding because the primary winding can be wound directly on the core, which in turn also reduces the MLT of the secondary winding. The reduced MLT also reduces the amount of copper wire. The structure may be replaced using a magnetically-permeable, U-shaped shield.

Abstract: A first current is supplied to a first primary winding of an ignition coil and a second current is supplied to a second primary winding of the ignition coil. A voltage is generated across a secondary winding of the ignition coil and an ignition spark current is generated at a spark plug coupled to the secondary winding. The ignition spark current is based upon the generated voltage and the sum of the first current and the second current.

Abstract: An ignition coil includes a generally cylindrical center core having a plurality of cylindrical portions whose outside diameter is different from each other, a primary coil disposed around the center core; and a secondary coil disposed around the primary coil, wherein the secondary coil boosts voltage that is applied to the primary coil to high voltage.

Abstract: An ignition coil and a method for its manufacturer are provided, the ignition coil including a housing, a primary winding and a secondary winding disposed in the housing, and a terminal including a connection portion in electrical communication with the secondary winding and a threaded portion engaging the housing. The threaded portion of the terminal may include a self-tapping threaded portion. Furthermore, the terminal may include a first body portion having a first threaded portion and a first median diameter and a second body portion having a second threaded portion and a second median diameter, where the second median diameter is greater than the first median diameter. The terminal may also include a shoulder portion having a diameter greater than the second median diameter and a third body portion having a third median diameter greater than the second median diameter.

Abstract: There is provided an ignition coil alleviating an insulating load between output terminals and at inside of the ignition coil and stabilizing insulating performance by constituting two outputs from the ignition coil by the same output electrode. Specifically, the invention is characterized in arranging two ignition plugs at a single cylinder, providing a center tap terminal at a secondary coil, regularly winding the secondary coil until reaching the center tap terminal and inversely winding the secondary coil from a regular winding direction to an inverse winding direction after reaching the center tap.

Abstract: There is provided an ignition coil alleviating an insulating load between output terminals and at inside of the ignition coil and stabilizing insulating performance by constituting two outputs from the ignition coil by the same output electrode. Specifically, the invention is characterized in arranging two ignition plugs at a single cylinder, providing a center tap terminal at a secondary coil, regularly winding the secondary coil until reaching the center tap terminal and inversely winding the secondary coil from a regular winding direction to an inverse winding direction after reaching the center tap.

Abstract: An ignition coil having a core with a first leg and a second leg, a first primary winding arranged over the first leg, a second primary winding arranged over the second leg, a first secondary winding arranged over the first primary winding, a second secondary winding arranged over the second primary winding, and a spark plug terminal electrically connected to one end of the second secondary winding. The first primary winding is connected in series to the second primary winding. The first secondary winding is connected in series to the second secondary winding. The core is of a laminated steel construction. The first and second secondary windings are progressively wound in multiple layers over respective bobbins.

Abstract: An engine ignition coil device which comprises a coil case composed of a first cylindrical case and a second case having a small tubular hole in its center portion and an upper external shoulder at its open end fitted in an open end of the first case to form a closed end of the coil case and an internal unit assembled from a primary side coil bobbin, a secondary-side coil bobbin having a high-voltage terminal holder projecting from a center of its end flange portion, a rod-shaped core, and a high-voltage terminal attached to the high-voltage terminal holder and having a contact for electrically connecting an ignition plug thereto. The internal assembly is mounted in the coil case by inserting the high-voltage terminal holder in the small tubular hole of the secondary case with a tip of the contact projected outwardly therefrom and formed integrally with the coil case by injecting melted insulating resin into the coil case.

Abstract: An ignition coil arrangement for a multicylinder internal combustion engine comprising at least one coil unit, which is able to be simply installed even under restricted spatial conditions. To this end, the coil unit, which contains a primary winding and a secondary winding attached to two spark plugs, is designed with the windings as a divided and mechanically separated coil unit. One primary partial winding and an associated secondary partial winding are each combined to form partial winding, which are electrically connected in series via a primary connector lead or a secondary connector lead (26), and are jointly driven by way of a contact element. The ignition coil arrangement is used, in particular, in motor vehicles.

Abstract: A improved stator apparatus for use in the ignition system of an internal combustion engine. The stator apparatus comprises a magnetically permeable core having a coil housing mounted to a leg portion thereof. A coil assembly including a voltage transformer is maintained in the coil housing. The various coils of the coil assembly are mounted about a central chimney member of the housing coaxial with the portion of the core extending therethrough. A circuit grounding member is electrically connected between the voltage transformer and the core by frictional contact therebetween. The circuit grounding member is constructed of a generally flat conductive piece having a longitudinal ridge defined along a portion of its length. In exemplary constructions, the longitudinal ridge extends along side a portion of the core and is biased into frictional contact therewith. The ridge facilitates assembly of the stator apparatus as well as enhancing electrical connection of the grounding member with the core.

Abstract: An apparatus for identifying the power stroke of a particular cylinder in a multi-cylinder engine which utilizes a wasted spark electronic distributorless ignition system but lacks a camshaft driven cylinder identification sensor, wherein a single sensor can be placed in a coil pack adjacent to and substantially equidistant from the ignition coil towers. The sensor will produce a signal reflecting the difference in voltage drops between corresponding pairs of spark plugs who share the same coil and which utilizes this signal to determine the power stroke of individual cylinders to produce a resulting synthetic cylinder identification signal. This apparatus can further be used as a permanent on-board sensor, thereby negating the need for a separate camshaft driven sensor, to determine the cylinder identification.

Abstract: An ignition coil is provided with a primary coil which includes a distributed constant circuit including inductance and capacitance. A thyristor is connected in parallel to the primary coil, and a secondary coil is magnetically coupled to the primary coil. When a predetermined voltage is supplied to the primary coil, the capacitance is charged. If the thyristor is turned-on, the capacitance is discharged sequentially with time deviation since charge of the capacitance is sequentially delayed by the inductance which is connected in parallel to the capacitance.

Abstract: An ignition system for a spark ignited internal combustion engine. The system can apply alternating current to the electrodes of a spark plug to maintain an arc at the electrodes for the desired length of time. The amplitude of the arc current can be varied. The alternating current is developed by a DC to AC inverter that is comprised of a transformer that has a center tapped primary and a secondary that is connected to the spark plug. An arc is initiated at the spark plug by discharging a capacitor through one of the winding portions of the center-tapped primary. Alternatively, the energy stored in an inductor can be supplied to a primary winding portion to initiate an arc. The ignition system is powered by a controlled current source that receives input power from a source of direct voltage such as a battery on a motor vehicle.

Abstract: An ignition system of AC continuous discharge type is disclosed which comprises a switching circuit for supplying the primary current of an ignition coil alternately in two directions and which is applicable to the internal combustion engine, for example. The rise of the primary current is slowed by an inductance device and the energy stored in the inductance device is absorbed into a capacitor.

Abstract: An ignition device for an internal combustion engine comprising an ignition coil adapted to produce a secondary reversible voltage, two wires commonly branched from the one end of the ignition coil, and two spark plugs connected to the wires. In each of the two wires, there are provided a series gap forming device and a diode. The diodes are arranged in reverse directions relative to each other, so that the secondary high voltage generated in one direction can pass through one of the diodes and the secondary high voltage in the reverse direction can pass through the other diode, whereby a spark is realized at one end of the two spark plugs by a selective application of the primary current.

Abstract: An ignition system for a distributorless internal combustion engine ignition system. Parameters related to the energization of a given ignition coil are stored and later utilized to control the dwell time for this same ignition coil. Another coil is energized and deenergized between the storing of parameters and the subsequent use of the parameters that relate to the given coil. The system causes a spark plug to be fired when a calculated spark timing signal is developed or at a time delayed from the occurrence of the calculated spark timing signal. Delayed spark plug firing occurs when certain conditions are not met prior to the time the calculated spark timing signal occurs. One of these conditions is that primary winding current has not attained a current limit value prior to the time that the calculated spark timing signal occurs.

Abstract: In an ignition device for an internal combustion engine, the ignition device comprises: three closed circuits including first, second and third closed circuits, each circuit having at least a DC power source, a primary coil and a switching transistor; an ignition coil having three primary coils and a secondary coil; an ignition command signal generating means producing first and second ignition command signals, the first ignition command signal being applied to the third closed circuit and the second ignition command signal being applied to the control circuit; and a control circuit for causing the first and second switching elements to push-pull operate based on the input timing of the second ignition command signal.

Abstract: A current-interrupting type ignition device having an ignition coil having a primary winding, a secondary winding and an auxiliary winding disposed in the primary circuit, the number of turns of the auxiliary winding being less than that of the primary one. The auxiliary winding is energized in such a manner that electromagnetic flux passes in a direction opposite to that of the primary winding when energized. In this arrangement current flows through the auxiliary winding via a transistor and a diode when the primary current flowing through the primary winding is interrupted, thereby adding a voltage induced across the secondary winding by the transferring effect upon the energization of the auxiliary winding to the corresponding high voltage induced across the secondary winding upon the interruption of the current flow through the primary winding.

Abstract: To reliably provide ignition energy only to specific spark plugs (11, 12; 14, 15) of a multi-cylinder internal combustion engine (ICE), a double-E core has primary windings (6, 8) located on a main or central branch, and separate secondary windings (10, 13) located in shunt branches, each secondary winding being associated with respective spark plugs. The primary windings are so energized that, at any one time, only one of the primary windings is conductive. In accordance with the invention, permanent-magnet biasing magnets (18, 20) are located in air gaps in the shunt magnetic paths (17, 19), and so polarized that the flux generated upon current flow through the respective branches of the primary windings is counter the bias magnetization of the respective magnet (18, 20) in the respective shunt path (17, 19) on which the secondary winding (10, 13) is wound which is associated with the respectively energized primary winding (e.g.

Abstract: To reliably provide ignition energy only to specific spark plugs (11, 12; 14, 15) of a multi-cylinder internal combustion engine (ICE), a double-E core has a main or common or central branch, and separate primary (6, 8) and secondary windings (10, 13) located in shunt core branches (18', 19'), each secondary winding being associated with respective spark plugs. The magnetic circuits of the primary windings including the common branch and single air gaps (20, 21), each in the shunt magnetic paths (18, 19), so that the flux change generated upon interruption of current flow through the respective primary windings need pass through one air gap only for the associated concentric secondary, buth through two magnetically serially placed air gaps for the other secondary.

Abstract: An ignition device for an internal combustion engine has a DC power source, first and second switching elements, a control signal generator for the switching elements, an ignition coil, and spark gaps. A first part of a primary coil of the ignition coil, a capacitor, the DC power source, and the first switching element form a closed circuit. A second part of the primary coil and the second switching element form another closed circuit. The signal generator generates ON signals for alternately turning on the first and second switching signals at predetermined timings based on an ignition command signal. The ignition performance of this ignition device for an internal combustion engine is improved.

Abstract: To provide ignition energy to respective spark plugs of a multi-cylinder internal combustion engine (ICE) without a distributor, winding groups, each including a primary and secondary winding, are located on respective core portions of an iron core, which core portions are coupled together by zones (a, b, c) of high magnetic reluctance, or low magnetic flux conductivity; the winding groups can be located on L cores (16, 17) with two high-reluctance gaps between the ends of the facing L cores (FIG. 1) or on a common U core (28, 30, 29) with a cross yoke (31) spaced from the ends of the legs of the U.

Abstract: A distributorless ignition system of an internal combustion engine has a supplementary spark energy module to increase spark energy. Two ignition coils each have secondary coils with split secondary center taps. Each of the primary windings is coupled to its own ignition module. The supplementary spark energy module is coupled to each of the split secondary center taps. A pair of spark plugs is coupled to one of the secondary windings and another pair of spark plugs is coupled to the other secondary winding.

Abstract: A distributorless ignition system of an internal combustion engine has a supplementary spark energy module to increase spark energy. Two ignition coils each have secondary coils with split secondary center taps. Each of the primary windings is coupled to its own ignition module. The supplementary spark energy module is coupled to each of the split secondary center taps. A pair of spark plugs is coupled to one of the secondary windings and another pair of spark plugs is coupled to the other secondary winding.

Abstract: An ignition coil includes a primary winding, an auxiliary primary winding and an ignition high voltage generating secondary winding which are wound on the same core. The primary current from the generating coil of a magneto flows to the base of a transistor through the primary winding of the ignition coil. The primary current flowing through the primary winding induces a voltage across the auxiliary primary winding and the induced voltage is applied between the base and emitter of the transistor. At the time of ignition, the primary current flowing to the base of the transistor is shunted by a semiconductor switching element so that the transistor is turned off and the current flowing through the auxiliary primary winding is interrupted, thus generating a high voltage across the secondary winding of the ignition coil.

Abstract: An ignition system for an internal combustion engine, wherein separate ignition transformers are mounted directly on respective spark plugs and an A.C. drive signal is applied to the ignition transformers sequentially in accordance with engine timing to fire the spark plugs sequentially. The A.C. drive signal is applied to each of the ignition transformers by means of a leakage transformer whereby ignition currents are maintained at a relatively low level after initiation of the ignition discharge across the spark plug electrodes. In one embodiment, each ignition transformer is composed of plural individual transformers disposed in a planetary arrangement around an axis defined by the respective spark plug. Each of these individual transformers includes at least one secondary winding and at least one primary winding wound on a respective core, with each of the secondary windings mounted in series across the electrodes of the spark plug.

Abstract: An ignition system for an internal combustion engine is disclosed which includes a separate ignition transformer for each spark plug in the engine. Each of the ignition transformers is enabled by means of signals produced by a crankshaft position sensor. Pulsating DC currents are then caused to flow in the primary windings of the ignition transformer thereby inducing a high voltage into a secondary winding of the transformer. A combination ignition transformer and spark plug cover is also disclosed.

Abstract: A plasma ignition system having a plurality of plasma ignition plugs eliminates a mechanical distributor for sequentially distributing plasma ignition energy into each plasma ignition plug.

Abstract: An ignition system for an internal combustion engine is disclosed which includes a separate ignition transformer for each spark plug in the engine. Each of the ignition transformers is enabled by means of signals produced by a crankshaft position sensor. Pulsating DC currents are then caused to flow in the primary windings of the ignition transformer thereby inducing a high voltage into a secondary winding of the transformer. A combination ignition transformer and spark plug cover is also disclosed.

Abstract: An ignition system for an internal combustion engine includes two power transistors respectively connected to opposite ends of the primary winding of an ignition coil to interrupt the primary currents which flow from a power source through the mid-tap of the primary winding. The two power transistors have emitters connected in common and a resistor is connected to the junction of this common connection to detect respective primary currents with the single resistor. A single current control circuit is provided to control the two power transistors in response to the detected respective primary currents.

Abstract: An ignition system (51-59, 60, Ql, Qn, 30) providing high modulation energy by means of modulator (30) is used to fire an igniter and effect total fuel burning without detonation. An extremely long ignition arc is initiated at an optimum timing angle (.theta..degree.) in advance of top dead center piston position. Such long arc with its high energy content makes possible an ignited fuel nodule of increased size within the combustion chamber of the engine. The increased fuel nodule size makes possible efficient engine operation at the variety of cylinder pressures and the variety of ignition voltages usable to ignite the fuel. These long arcs may be sustained over a large range of duty cycle periods of ignition electrical power by modulation of transient current feeding the igniter.

Abstract: Apparatus for producing spark ignition of an internal combustion engine in which sparks at the spark plugs are initiated by a high voltage pulse of typically 20 KV and are sustained thereafter by a d.c. voltage of typically 3 KV. In one embodiment the d.c. voltage is produced from a 12 volt supply by a d.c. to d.c. converter, the converter being adapted to produce a substantially constant voltage irrespective of the current drain produced by the spark, within given limits. The converter is also adapted to shut down its operation in the event of an output short circuit. The converter is disclosed connected to a lean burn PROCO engine with the result that only one spark plug per cylinder is required. In an alternative embodiment the d.c. sustaining voltage is derived directly from a conventional alternator driven by the engine.

Abstract: An ignition system includes an alternating current power source which feeds a transformer having a primary winding, the primary winding being coupled to an electronic switch. The electronic switch intermittently interrupts current flowing in the primary winding and in the output circuit of the power source. Such electronic switch is made operable by virtue of the peak excursions of the alternating current thus supplying the necessary collector or emitter potential, depending upon the manner in which the electronic switch is connected, for the entire igniter firing cycle. A capacitor in series with the output circuit of the power source and with the primary winding enables current to be transferred out of the power source to such primary winding. Such electronic switch also provides discrete separation between successive output waveforms of successive ignition firing cycles. The system employs a temporary change accumulator inductor in the output circuit in series with the primary winding.