Dual energy ignition system

Internal-combustion engines – High tension ignition system – Additional spark energy supply

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123656, F02P 1500

Patent

active

051974487

ABSTRACT:
An ignition system for hydrocarbon based fuels employing two energy sources, one to create a spark, and the other to sustain an arc. The ignition circuit is based in part on the principle of a strobe light circuit. The circuit increases ignition efficiency by increasing the power dissipated at the spark gap, particularly when used in conjunction with a surface gap spark plug. Maximum power transfer is achieved via impedance matching of the ignition system to a surface gap spark plug. The circuit is particularly appropriate for igniting extremely lean mixtures, highly diluted mixtures, and alternative fuels.

REFERENCES:
patent: 4136301 (1979-01-01), Shimojo et al.
patent: 4223656 (1980-09-01), Hamley
patent: 4269161 (1981-05-01), Simmons
patent: 4292569 (1981-09-01), Gerry
patent: 4301782 (1981-11-01), Wainwright
patent: 4345575 (1982-08-01), Jorgensen
patent: 4506650 (1985-03-01), Shimojo et al.
"The Effect of Ignition System Power on Fast Burn Engine Combustion," Richard W. Anderson (Ford Motor Co.), Society of Automotive Engineers, Inc., Jan. 1987.
"Effects of Spark Plug Design Parameters On Ignition And Flame Development in an SI-Engine," Stefan Pischinger, Dipl.-Ing., RWTH Aachen (1985), Submitted in Partial Fulfillment of the Requirements for the Degree of Doctor of Philosophy at the Massachusetts Institute of Technology, Jan. 1989.
"A Comparative Study of Plasma Ignition Systems," C. F. Edwards and A. K. Oppenheim, SAE Technical Paper Series, SAE The Engineering Resource For Advancing Mobility, International Congress & Exposition, Detroit, Mich., Feb. 28-Mar. 4, 1983.

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