Additional Capacitor Other Than Breaker Point Capacitor Is In Series With Coil Primary Or Secondary Patents (Class 123/653)
  • Patent number: 7080639
    Abstract: A circuit for controlling an ignition coil is provided. The circuit includes a first transistor, second transistor, and a capacitor. The first transistor is connected in electrical series between the ignition coil and a voltage reference. The capacitor is connected between the ignition coil and a control input of the first transistor. The second transistor is configured to selectively connect the capacitor to the voltage reference.
    Type: Grant
    Filed: June 30, 2005
    Date of Patent: July 25, 2006
    Assignee: Visteon Global Technologies, Inc.
    Inventor: Tom I. Pattantyus
  • Patent number: 7066161
    Abstract: A capacitive discharge ignition (CDI) system for generating ignition sparks in an internal combustion engine comprises a single CDI module including a plurality of charge storage capacitor devices, a corresponding plurality of sets of ignition outputs, at least one charging circuit for charging at least one of the plurality of charge storage capacitor devices, and an ignition controller for selectively and individually controlling each of the plurality of charge storage capacitor devices and the at least one power supply circuit. Each of the plurality of charge storage capacitor devices is operatively coupled to the ignition outputs of one of the plurality of sets of ignition outputs. This allows for the single CDI module to power multiple, independent spark plugs either simultaneous of, immediately prior to or after each other while still delivering full energy to each ignition device.
    Type: Grant
    Filed: July 23, 2004
    Date of Patent: June 27, 2006
    Assignee: Advanced Engine Management, Inc.
    Inventors: John Edward Romero, Scott A. Furlong
  • Patent number: 6112730
    Abstract: An ignition system for an internal combustion engine having a transformer with a primary winding adapted to be connected to a power supply and a secondary winding adapted to be connected to a spark plug of the internal combustion engine, and a controller interconnected to the transformer so as to activate and deactivate the output of the transformer. The transformer serves to produce an output from the secondary winding having a frequency of between 1 KHz and 100 KHz and a voltage of at least 20 kilovolts. In particular, the transformer produces an output of an alternating current having a high voltage sine wave reaching at least 20 kilovolts. A voltage regulator is connected to the power supply and to the transformer so as to provide a constant DC voltage input to the transformer. The transformer produces power of constant wattage from the output of the secondary winding during the activation by the controller.
    Type: Grant
    Filed: May 17, 1999
    Date of Patent: September 5, 2000
    Assignee: Marrs, Thomas C.
    Inventors: Thomas C. Marrs, Barry Green
  • Patent number: 6070568
    Abstract: The invention describes a novel circuit to be used in spark-ignition combustion engines. An ignition circuit according to the invention extends the voltage decay time following the initial generation of a spark across the spark plug gap. In addition, it reduces the oscillation of the voltage following any secondary negative spike. Use of the circuit increases combustion efficiency and reduces wear and tear on the spark plugs. This purpose is achieved by including a diode and a capacitor in the spark circuit; alternately, the diode may act as a capacitor when reverse biased.
    Type: Grant
    Filed: December 18, 1997
    Date of Patent: June 6, 2000
    Inventors: Jonathan Redecen Dibble, Andrew Desmond Nutt
  • Patent number: 6006156
    Abstract: An apparatus for diagnosing and controlling an ignition system of an internal combustion engine includes an ignition coil controllable by an ignition control circuit, a spark voltage sensor electrically connected to the high tension side of the ignition coil secondary and an ion voltage sensor electrically connected to the low tension side of the ignition coil secondary. A computer processes the spark voltage signal by comparing the signal to a number of predefined spark voltage waveforms in memory. If the spark voltage signal matches any of the spark voltage waveforms in memory that correspond to a predefined ignition system failure mode, a corresponding error code is stored in memory. The computer is further operable to process a voltage peak of the spark voltage, wherein the voltage peak corresponds to the breakdown voltage in the spark gap of a spark plug connected to the secondary coil.
    Type: Grant
    Filed: December 11, 1997
    Date of Patent: December 21, 1999
    Assignee: Cummins Engine Company, Inc.
    Inventor: Luigi P. Tozzi
  • Patent number: 5564403
    Abstract: A spark ignition system and spark plug for utilization in an internal combustion engine combusting an ultra lean fuel/air mixture has capacitors and rectifiers built within the spark plug and the system is constructed to be compact and capable of delivering a controlled spark that has the physical properties of providing a very fast, high power pulse or train of pulses greater than conventional spark plugs.
    Type: Grant
    Filed: October 16, 1995
    Date of Patent: October 15, 1996
    Assignee: Caterpillar Inc.
    Inventors: George Codina, James M. Schultz, J. Thomas Vachon
  • Patent number: 5421312
    Abstract: An electrical circuit for connection to a high tension lead which is connected to a spark plug of a spark ignition internal cumbustion engine. The circuit comprises a capacitor (11) the capacitance of which is such that, if a high voltage pulse is applied to the high tension lead, the voltage developed across the capacitor and the charge stored by the capacitor are sufficient to initiate and sustain and ignition spark. The capacitor may be voltage dependent to achieve an optimised spark current characteristic. A resistor (12), such as a voltage dependent resistor, and a voltage controlled discharge device (13) may be connected in parallel with the capacitor.
    Type: Grant
    Filed: April 30, 1993
    Date of Patent: June 6, 1995
    Assignee: Dawson Royalties Limited
    Inventor: Joseph G. Dawson
  • Patent number: 5370100
    Abstract: A connection part for an ignition device, arranged between an ignition coil and a spark plug for incorporating in a cylinder head of an internal combustion engine, has an isolation housing, a high voltage switching element located in the isolation housing and during application of a trigger voltage is transferred reversibly in an electrically jump-like fashion to an electrically conductive condition, a first junction element located at one end of the high voltage switching element and connected with one pole of the latter and also connectable with a high voltage terminal of the ignition coil which leads to an output voltage of the ignition coil, a second junction element provided at another end of the high voltage switching element and connected with another pole of the latter and provided for receiving a terminal pin of the spark plug, and an element associated with the isolation housing for increasing a capacity region between the high voltage switching element and the first junction element.
    Type: Grant
    Filed: August 25, 1993
    Date of Patent: December 6, 1994
    Assignee: Robert Bosch GmbH
    Inventors: Walter Benedikt, Werner Herden, Manfred Vogel
  • Patent number: 4487177
    Abstract: A diesel engine is started by plural ignition plugs, each installed in a swirl chamber of a corresponding cylinder. Each ignition plug includes (a) an elongated center electrode, (b) a fuel-absorbent electrical insulator that encapsulates the center electrode so as to allow only one end of the center electrode to protrude, and (c) a plurality of elongated grounding electrodes arranged symmetrically around said insulating member to define a discharge path in conjunction with the protruding end of the center electrode. The discharge path includes part of the surface of the insulating member and an air gap between free ends of the grounding electrodes and opposing surfaces of the insulating member.
    Type: Grant
    Filed: January 26, 1983
    Date of Patent: December 11, 1984
    Assignee: Nissan Motor Company, Limited
    Inventor: Yasuki Ishikawa
  • Patent number: 4463744
    Abstract: A distributorless ignition system in which a primary current alternately changing in its flowing direction is supplied to the primary winding of an ignition coil to induce a high secondary voltage alternately changing in polarity across the secondary winding of the ignition coil, and the induced voltage is sequentially distributed through a plurality of rectifiers such as diodes to a plurality of associated spark plugs thereby sequentially causing jumping of a spark across the spark gap of the spark plugs. An apparatus for mounting such a distributorless ignition system is also disclosed.
    Type: Grant
    Filed: March 6, 1981
    Date of Patent: August 7, 1984
    Assignee: Hitachi, Ltd.
    Inventors: Minoru Tanaka, Takeshi Ishizuka, Kenzo Shima
  • Patent number: 4418660
    Abstract: A plasma ignition system for an internal combustion engine, which comprises: (a) a low DC voltage power supply; (b) a DC-DC converter which converts a low DC voltage from the low DC voltage supply to the corresponding AC voltage and inverts the AC voltage to a high DC voltage; (c) a plurality of plasma ignition plugs each located within one of the cylinders; (d) a plurality of first capacitors each for changing the high DC voltage received from the DC-DC converter; (e) a plurality of photosensitive switching elements each connected between each corresponding first capacitor and ground and which turns on to apply the plasma ignition energy charged within the corresponding first capacitor to the corresponding plasma ignition plug at a predetermined timing; (f) a plurality of voltage-boosting transformers each having a common terminal of primary and secondary windings connected to one terminal of each corresponding plasma ignition energy capacitor and another terminal of the primary winding connected to the corr
    Type: Grant
    Filed: April 7, 1982
    Date of Patent: December 6, 1983
    Assignee: Nissan Motor Company, Limited
    Inventors: Hiroshi Endo, Masazumi Sone, Iwao Imai, Yasuki Ishikawa
  • Patent number: 4369758
    Abstract: A plasma ignition system for an internal combustion engine which can prevent irregular ignition when the insulation between the electrodes of the spark plug deteriorates due to carbon on the electrodes, and further can prevent electrical noise from being emitted. The system according to the present invention comprises a plasma ignition energy storing condenser, a plurality of switching units, and boosting transformers one each for each of the engine cylinders. In this system, a high tension is generated at the secondary coil of the boosting transformer to generate a spark between the electrodes of the plug and subsequently a large current is passed through the electrodes by the remaining energy stored in the condenser.
    Type: Grant
    Filed: September 17, 1981
    Date of Patent: January 25, 1983
    Assignee: Nissan Motor Company, Limited
    Inventor: Hiroshi Endo
  • Patent number: 4366801
    Abstract: A plasma ignition system for an internal combustion engine which can prevent irregular ignition when the insulation between the electrodes of the spark plug deteriorates due to carbon on the electrodes, and further can prevent electrical noise from being emitted. The system according to the present invention comprises a plurality of independent plasma ignition energy storing condensers, switching units, and boosting transformers one each for each of the engine cylinder. In this system, a high tension is generated at the secondary coil of the boosting transformer to generate a spark between the electrodes of the plug and subsequently a large current is passed through the electrodes by the remaining energy stored in the condenser.
    Type: Grant
    Filed: September 17, 1981
    Date of Patent: January 4, 1983
    Assignee: Nissan Motor Company, Limited
    Inventors: Hiroshi Endo, Yasuki Ishikawa, Iwao Imai
  • Patent number: 4292569
    Abstract: An ignition system uses a transformer with a primary winding and a secondary winding wherein the secondary winding is intermittently coupled to at least one igniter load. An electronic switch is connected to the primary winding. Such electronic switch has an input circuit and an output circuit for enabling electrical energy to be stored in the primary winding. The electronic switch may have an additional switching stage feeding its input circuit for establishing the charging period of the primary winding consistent with the logic of a conventional ignition system. A timer is electrically coupled to the additional switching stage for intermittently activating such electronic switch. An alternating current modulator is connected to the primary winding so as to provide a modulating signal during the discharge period of the system thereby modulating the discharge current of the primary winding.
    Type: Grant
    Filed: June 7, 1979
    Date of Patent: September 29, 1981
    Inventor: Martin E. Gerry
  • Patent number: 4291661
    Abstract: An inductive-capacitive cyclic charge-discharge ignition system includes an ignition transformer primary winding in parallel with a capacitor and fed by a unipolar alternating current source providing a plural number of repetition cycles during each igniter firing period. Such unipolar cycles cause the capacitor and primary winding to charge and discharge during each of the repetition cycles creating a plurality of ringing periods for each igniter firing period. A diode or an additional capacitor, or both, inserted in series with the parallel combination of the first stated capacitor and primary winding, substantially increases the velocity of arc provided by an igniter. The system is triggered by a magnetic pulse generating timer which generates AC voltages to modulate the output of the unipolar source. Where discharge currents are developed, such generated AC voltages also modulate the discharge currents.
    Type: Grant
    Filed: August 13, 1979
    Date of Patent: September 29, 1981
    Inventor: Martin E. Gerry
  • Patent number: 4274034
    Abstract: A glow plug driver adapted to be coupled to a power supply and a glow plug comprising first and second conductive leads for coupling the glow plug to the power supply and an electronic switch in the first lead having conductive and nonconductive states so that pulses of electrical energy can be supplied to the glow plug. A resistor and a capacitor are coupled between the leads in parallel with the glow plug so that the capacitor can charge when the electronic switch is in the conductive state and discharge when the electronic switch is in the nonconductive state. A timer is used to place the electronic switch in the conductive state for a predetermined amount of time. The timer is in turn controlled by a transistor having its base coupled to a junction between the resistor and the capacitor.
    Type: Grant
    Filed: October 15, 1979
    Date of Patent: June 16, 1981
    Assignee: C&D Enterprises
    Inventor: Charles W. Conklin
  • Patent number: 4273093
    Abstract: A non-contactor ignition system for generating an ignition voltage under controlling a primary current of an ignition coil by a semiconductor switching element, comprises a capacitor which is charged by a first power source and repeats a charging and a discharging in each constant period; a semiconductor switching element for ignition timing which is connected to the capacitor and the input terminal of said semiconductor switching element; and a second power source which generates an output voltage which is connected in said input circuit of said semiconductor switching element for ignition timing and whose value is varied depending upon the variation of revolution velocity of an engine and which has a long period including at least the charging period of said capacitor.
    Type: Grant
    Filed: September 6, 1979
    Date of Patent: June 16, 1981
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventor: Masayuki Ozawa
  • Patent number: 4245609
    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.
    Type: Grant
    Filed: December 18, 1978
    Date of Patent: January 20, 1981
    Inventor: Martin E. Gerry
  • Patent number: 4217873
    Abstract: An ignition circuit for self-purifying creeping discharge spark plugs is disclosed. The ignition circuit comprises a creeping discharge spark plug including a center electrode and a concentric ground electrode between which is formed a spark gap having a creeping surface along which sparks are slidably moved, a capacitor located near said spark gap and connected in parallel therewith, and an impedance element connected in series with said capacitor and not impeding the movement of the electric charge discharged from said capacitor.
    Type: Grant
    Filed: January 18, 1978
    Date of Patent: August 19, 1980
    Assignees: NGK Spark Plug Co. Ltd., Yamahara Hatsudoki Kabushiki Kaisha
    Inventors: Kanemitsu Nishio, Takashi Suzuki, Toshihiko Uenaga, Fumio Zega