Apparatus for producing spark ignition of an internal...

Details Apparatus for producing spark ignition of an internal... Apparatus for producing spark ignition of an internal...

F - Mech Eng,Light,Heat,Weapons

02

P

400/9315, 317/5.

F02P 3/04 (2006.01) F02P 3/08 (2006.01) F02P 9/00 (2006.01) F02P 17/12 (2006.01)

Patent

CA 1161101

- 1 - A B S T R A c T Apparatus for producing spark ignition of an internal combustion engine in which sparks at the spark plugs are initiated by a high voltage pulse of typically 20KV and are sustained thereafter by a d.c. voltage of typicall~ 3KV. In one embodiment the d.c. voltage is produced from a 12 volt supply by a d.c. to d.c. converter, the converter ~eing adapted to produce a substantially constant voltage i~respective of the current drain produced by the spark~ within given limits. The converter is also adapted to shut do~n its operation in the event of an output short circuit. The converter is disclosed co~ected to a lean burn PROCO engine with the result that only one spark plug per cylinder is required. In an ~lternative embodiment the d.c~ sustaining voltage is derived directly from a conventional alternator driven by the engine.

364090

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