Internal-combustion engines – High tension ignition system – Electronic cylinder sequencing
Patent
1978-06-05
1980-08-12
Myhre, Charles J.
Internal-combustion engines
High tension ignition system
Electronic cylinder sequencing
123650, F02P 700
Patent
active
042167558
ABSTRACT:
The invention provides a distributor device for H.T. supply to an internal combustion engine, and comprising several ignition coils and a single contact breaker to interrupt supply to one or more of those coils at any instant, each of the coils having its primary winding shunted by a thyristor which can be controlled to select whether the primary winding of that particular coil is to be energized, or not, as the case may be.
In one embodiment, the thyristors are polarized so as to conduct in a direction allowing "idling" circulation of current through the closed circuit comprising the shunting thyristor and its associated primary winding; in another embodiment the thyristors are polarized in the reverse direction and a diode is connected between the gate and the cathode of each thyristor to protect the cathode from gate voltage and another diode is connected to protect the gating circuit of that particular thyristor. The coils may be connected all in series, or all in parallel, or in parallel-connected sub-assemblies which are then strung in series.
REFERENCES:
patent: 1351396 (1920-08-01), Midgley
patent: 2322584 (1943-06-01), Nardone
patent: 3242916 (1966-03-01), Coufal
patent: 3759237 (1973-09-01), Shino et al.
patent: 3828752 (1974-08-01), Hioki et al.
patent: 3900015 (1975-08-01), Mainprize
patent: 4007724 (1977-02-01), Mura
patent: 4008698 (1977-02-01), Gartner
patent: 4104997 (1978-08-01), Padgitt
Dolinar Andrew M.
Myhre Charles J.
Societe pour l'Equipement de Vehicules
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