| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 123621000 | Having an ignition coil with multiple primary or secondary windings | 11 |
| 20090071454 | IGNITION COIL HAVING COMPRESSED POWDER CORE - 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. | 03-19-2009 |
| 20100132677 | IGNITION APPARATUS WITH CYLINDRICAL CORE AND LAMINATED RETURN PATH - 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. | 06-03-2010 |
| 20120017881 | INTERNAL COMBUSTION ENGINE CONTROL SYSTEM - 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. | 01-26-2012 |
| 20130104863 | IGNITION COIL ASSEMBLY AND METHOD | 05-02-2013 |
| 20130167817 | System For Contactless Power Transfer - 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 (P | 07-04-2013 |
| 20140076295 | MULTI-COIL SPARK IGNITION SYSTEM - 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. | 03-20-2014 |
| 20150292467 | PLASMA IGNITION DEVICE FOR INTERNAL COMBUSTION ENGINES - A plasma ignition device for internal combustion engines is described. It comprises a driving and analog and/or digital control unit, an ignition coil and a spark plug, interconnected each other in a circuit by means of electrical/electronic connection means. The ignition coil comprises two primary windings connected in series each other, having a central electrical connection between the first primary winding and the second primary winding, for electrically charging a capacitor, connected in series to the two primary windings, and for magnetically charging a magnetic core magnetically coupled to a secondary winding of the ignition coil, in order to generate a potential difference across a discharge “gap” of a spark plug. | 10-15-2015 |
| 123622000 | Separate circuit for each winding | 4 |
| 20090194083 | MULTIPLE PRIMARY COIL IGNITION SYSTEM AND METHOD - 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. | 08-06-2009 |
| 20100132678 | Multiple Primary Coil Ignition System And Method - An original coil having a single primary winding is replaced with a replacement ignition coil having a first primary winding and a second primary winding. The replacement coil is coupled to the existing controller of the ignition system and to a spark plug. The controller is operated within predefined operating limits so as to optimize at least one predetermined ignition spark characteristic of the spark plug. | 06-03-2010 |
| 20120160222 | DUAL COIL IGNITION - Applicant has disclosed an improved dual cycle ignition system for automobiles. In the preferred embodiment, the improved ignition system comprises at least two secondary ignition coils wired in a high voltage “OR” configuration using a single high voltage circuit through a distributor, or alternatively a single plug operated directly from diodes connected respectively to associated secondary coils. The ignition coils are set up to alternate sparks, so that even at 8000 engine RPM, each coil is firing as if operating at 4000 RPM, a speed where conventional highly optimized and inexpensive coils are very effective and can reach their full output. | 06-28-2012 |
| 20150034059 | IGNITION SYSTEM - 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. | 02-05-2015 |
