Internal-combustion engines – High tension ignition system – Electronic cylinder sequencing
Patent
1981-03-06
1984-08-07
Cox, Ronald B.
Internal-combustion engines
High tension ignition system
Electronic cylinder sequencing
123634, 123647, 123630, 123653, 123655, F02P 100
Patent
active
044637446
ABSTRACT:
A distributorless ignition system in which a primary current alternately changing in its flowing direction is supplied to the primary winding of an ignition coil to induce a high secondary voltage alternately changing in polarity across the secondary winding of the ignition coil, and the induced voltage is sequentially distributed through a plurality of rectifiers such as diodes to a plurality of associated spark plugs thereby sequentially causing jumping of a spark across the spark gap of the spark plugs. An apparatus for mounting such a distributorless ignition system is also disclosed. In the invention, a surge voltage absorber is associated with each of the diodes, so that a surge voltage, which may be induced across the secondary winding of the ignition coil due to failure of normal sparking as when one or more of the spark plugs are removed or excessive wear occurs on the electrodes of one or more of the spark plugs, can be effectively absorbed without the possibility of damage to the diode or diodes and insulating members.
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Ishizuka Takeshi
Shima Kenzo
Tanaka Minoru
Cox Ronald B.
Hitachi , Ltd.
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