Ignition coil for a multi-cylinder internal combustion engine

Details Ignition coil for a multi-cylinder internal combustion engine Ignition coil for a multi-cylinder internal combustion engine

1984-02-06

1985-04-09

Cox, Ronald B.

Internal-combustion engines

High tension ignition system

Electronic cylinder sequencing

123621, 123622, 123634, F02P 100

Patent

active

045094950

ABSTRACT:
To provide ignition energy to respective spark plugs of a multi-cylinder internal combustion engine (ICE) without a distributor, winding groups, each including a primary and secondary winding, are located on respective core portions of an iron core, which core portions are coupled together by zones (a, b, c) of high magnetic reluctance, or low magnetic flux conductivity; the winding groups can be located on L cores (16, 17) with two high-reluctance gaps between the ends of the facing L cores (FIG. 1) or on a common U core (28, 30, 29) with a cross yoke (31) spaced from the ends of the legs of the U. Interruption of current flow through the primary of any one of the winding groups will then not induce in the secondary of the other winding group a voltage high enough to cause spark-over at the other secondary; free-wheeling diodes (14, 22), connected across the primaries, can suppress current flow in the primary not being interrupted; and diodes (12, 13; 25, 26), serially connected with spark plugs, likewise suppress spurious spark-over.

REFERENCES:
patent: 1428635 (1922-09-01), Hunt
patent: 2093700 (1937-09-01), Wallenta
patent: 2100210 (1937-11-01), Cain
patent: 3926557 (1975-12-01), Callies
patent: 3980922 (1976-09-01), Katsumata
patent: 4167928 (1979-09-01), Ragel
patent: 4203404 (1980-05-01), Canup
patent: 4233949 (1980-11-01), d'Orsay
patent: 4381757 (1983-05-01), Morino
patent: 4446842 (1984-05-01), Iwasaki

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