Internal-combustion engines – Igniters – Incandescent
Patent
1978-04-18
1979-09-18
Cox, Ronald B.
Internal-combustion engines
Igniters
Incandescent
123148E, 123148DS, F02P 100
Patent
active
041679288
ABSTRACT:
For a four cylinder engine, a first and second ignition coil, each having a primary and secondary winding is provided. A first and second electronic switch is connected in series wit the primary winding of each ignition coil and the so-formed series circuits are connected in parallel. A power switch is connected in series with the parallel combination. The power switch is switched to the conductive state a predetermined time interval prior to the ignition time and to the nonconductive state at each ignition time. The series switches are switched to the conductive state alternately during each cycle, but the switching occurs only when the power switch is in the nonconductive state. The on-offswitching of the series switch is controlled by a flip-flop which is clocked at the ignition time and which is initially synchronized to the ignition cycle by a signal derived from a sensor sensing a mark on a rotating shaft in the engine.
REFERENCES:
patent: 3072823 (1963-01-01), Kirk
patent: 3218512 (1965-11-01), Quinn
patent: 3253168 (1966-05-01), Robbins
Cox Ronald B.
Robert & Bosch GmbH
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