Dual energy ignition system

F - Mech Eng,Light,Heat,Weapons – 02 – P

Patent

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F02P 3/04 (2006.01) F02P 3/00 (2006.01) F02P 3/08 (2006.01) F02P 9/00 (2006.01)

Patent

CA 2115059

An ignition system for hydrocarbon based fuels employing two energy sources ( 10, 16), one to create a spark, and the other to sustain the spark. The ignition system is based in pan on the principle of a strobe light circuit. The system increases ignition efficiency by increasing the power dissipated at a spark gap (14), particularly when used in conjunction with a surface gap spark plug. Maximum power transfer is achieved via impedance matching between a transformer (12) of the ignition system to the surface gap spark plug. The circuit is particularly appropriate for igniting extremely lean mixtures, highly diluted mixtures, and alternative fuels.

Le système d'allumage pour carburants à base d'hydrocarbures utilise deux sources d'énergie (10, 16), l'une pour créer une étincelle et l'autre pour entretenir l'étincelle. Le système d'allumage se base en partie sur le principe d'un circuit à lumière stroboscopique. Le système augmente le rendement d'allumage en augmentant la puissance dissipée au niveau de l'écartement des électrodes (14), en particulier lorsqu'il est utilisé en association avec une bougie à écartement en surface. Un transfert maximum de puissance est obtenu, par correspondance d'impédance, entre un transformateur (12) du système d'allumage et la bougie à écartement en surface. Le circuit est particulièrement adapté à l'allumage de mélanges extrêmement pauvres, de mélanges extrêmement dilués et de combustibles de remplacement.

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