F - Mech Eng,Light,Heat,Weapons – 02 – P
Patent
F - Mech Eng,Light,Heat,Weapons
02
P
317/5.2, 317/5.6
F02P 15/08 (2006.01) F02P 3/08 (2006.01) F02P 9/00 (2006.01) F02P 15/10 (2006.01) H01F 27/28 (2006.01) H01F 38/12 (2006.01) F02B 1/04 (2006.01) F02B 75/12 (2006.01)
Patent
CA 1273053
ABSTRACT OF THE DISCLOSURE A capacitive discharge pulsed plasma ignition system which is suitable for retrofitting to standard automobile engines, and easily adaptable to new engines, including diesel engines, which has been substantially improved by using a novel ultra-high efficiency ignition transformer (coil) (3) with an optimized high current and high voltage output. The ignition is preferably used with a high pulse rate, high efficiency, multiple pulse ignition box providing rapid pulsed plasma ignition sites. The coil (3) has a low winding turns ratio of about 40, low primary (1,11) and secondary (2,12) inductances and resistances, low loss in its core (3a), low secondary capacitance (5), and is used in conjunc- tion with a capacitor (4) of capacitance between 1 and about 20 microfarads, The system uses voltage doubling at the spark gap (9) with a very high rate of rise of voltage and peak value of voltage through coil/capacitor design combination to fire a wide spark gap (9) and provide a very high current. The spark current has an optimized high oscillation frequency and high spark energy. Long effective duration of the spark plasma is obtained through rapid pulsing at a high duty cycle of the spark gap (9) with the pulse rate chosen to optimize ignitability for any engine system. The system is powered preferably by a regulated output high effi- ciency inverter (13) controlled by a multi-pulse controller (17) connected to breaker points or other electronic trigger (18). The optimized ignition pulse train is provided by a controller (17) which includes an input trigger converter (19), a gate pulse width control (20) for providing the pulse train width, and a gated clock oscillator (21) for providing the pulse rate and initial timing pulse trigger. When the high efficiency coil (3) and capacitor (4) are used in conjunction with a high efficiency regulated output power inverter (13) and multi-pulse controller (17), a practical, easily installed, low cost, ultra-high effi- ciency optimized "pulsed plasma" ignition system is provided capable of producing ignition of very lean mixtures for substan- tially reduced exhaust emissions and increased engine efficiency.
498765
Combustion Electromagnetics Inc.
Swabey Ogilvy Renault
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