초록 ▼

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

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 conjunction with a capacitor (4) of capacitance between 1 and about 20 microfarads. The system uses voltage doubling at the spark gap (9) through coil/capacitor design combination to fire a wide spark gap (9) and provide a very high current. The spark current has a high spark energy and long effective duration 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. When the high efficiency coil (3) and capacitor (4) are thus used, a practical, easily installed, low cost, ultra-high efficiency optimized “pulsed plasma”ignition system is provided capable of producing ignition of very lean mixtures for substantially reduced exhaust emissions and increased engine efficiency.

대표청구항 ▼

In an electrical ignition system including a transformer with primary and secondary windings wound about a magnetic core material and an input capacitor of capacitance C1 connected to the primary winding for storing and discharging electrical energy, and secondary winding connected to a spark gap pr

In an electrical ignition system including a transformer with primary and secondary windings wound about a magnetic core material and an input capacitor of capacitance C1 connected to the primary winding for storing and discharging electrical energy, and secondary winding connected to a spark gap providing a total secondary output capacitance C2, the improvement comprising: the transformer winding turns ratio N being constructed between 25 and 55 to provide a peak secondary output voltage V2 for an input voltage V1 to which capacitor C1 is charged, where V2 is given by V2=k1*N*V1*VP, where k1 is the coil coupling coefficient and VP is the voltage doubling parameter defined according to VP=2/[1+(N**2)*C2/C1], and the system is constructed and arranged so that the voltage doubling parameter VP is greater than 1.6.