F - Mech Eng,Light,Heat,Weapons – 02 – P
Patent
F - Mech Eng,Light,Heat,Weapons
02
P
317/5.3
F02P 3/04 (2006.01) F02P 3/055 (2006.01)
Patent
CA 1041596
AN INTERNAL COMBUSTION ENGINE IGNITION SYSTEM Abstract of the Disclosure: An internal combustion engine ignition system of the inductive type which provides a rapid rise time ignition spark potential and a long duration arc. The primary winding of the ignition coil has an inductance value which, with a specific energizing current, will provide sufficient stored energy to maintain an ignition arc for a predetermined duration, of the order of 800 microseconds, for example. The ignition coil secondary to primary turns ratio is selected to be of the order of 60:1 to provide a predetermined rise time of the ignition spark potential, of the order of 40 microseconds, for example. To prevent the destruction of the ignition coil primary winding energizing circuit switching device in the event of an open secondary winding output circuit, a metal oxide varistor is connected in shunt across the current carry- ing elements thereof.
207363
Campbell Robert E.
Hetzler Lewis R.
Huntzinger Gerald O.
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