Distributorless internal combustion engine ignition system

Internal-combustion engines – High tension ignition system – Electronic cylinder sequencing

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Details

123416, 123609, F02P 900, F02P 312, F02P 500

Patent

active

042652111

ABSTRACT:
An internal combustion engine crankshaft reference signal pulse corresponding to a selected one engine cylinder pair and a series of crankshaft position signal pulses are generated during each crankshaft revolution and a crankshaft reference signal pulse corresponding to each other engine cylinder pair is synthesized during each crankshaft revolution. In response to each crankshft reference signal pulse and the subsequent crankshaft position signal pulses there is produced an ignition dwell signal effective to initiate ignition coil primary winding energization and later an ignition spark event signal that is effective to terminate ignition coil primary winding energization to thereby produce an ignition spark potential at the engine crankshaft angle at which an ignition spark event is to occur as calculated by an associated external data processor unit. The ignition spark potential produced upon each ignition coil primary winding deenergization is directed through direct wire connection to the spark plugs of the engine cylinder pair including the cylinder to be fired.

REFERENCES:
patent: 3921610 (1975-11-01), Hardig
patent: 4009699 (1977-03-01), Hedzler et al.
patent: 4198936 (1980-04-01), Pagel et al.
patent: 4207846 (1980-06-01), Borst et al.
patent: 4208992 (1980-06-01), Polo

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