Capacitor discharge ignition system with timing stabilization ar

Details Capacitor discharge ignition system with timing stabilization ar Capacitor discharge ignition system with timing stabilization ar

1978-07-25

1980-05-13

Myhre, Charles J.

Internal-combustion engines

Igniters

Incandescent

123149C, 123149D, 310 70A, 315209CD, 315218, F02P 306

Patent

active

042023050

ABSTRACT:
A capacitor discharge ignition system is provided with an ignition timing stabilization arrangement to achieve substantially constant ignition timing characteristics over a wide range of engine speeds. The capacitor discharge ignition system is positioned adjacent a rotating permanent magnet that is rotated over a path in synchronism with the operation of an engine to be controlled.
The capacitor discharge ignition system includes a stator core having disposed thereon an ignition coil and a control coil assembly. The control coil assembly includes a control winding and a timing stabilization winding. As a first pole of the magnet passes the stator core, a voltage and current of a first polarity is induced in the control winding to charge a storage capacitor. As the second pole of the magnet passes the stator core, a voltage and current of the opposite polarity is induced in the control winding and a control arrangement responsive to the control winding discharges the capacitor into a primary winding of the ignition coil. The induced voltage and current in a secondary winding of the ignition coil provides suitable power conditions to fire a spark plug or spark plugs connected across the secondary windings. In one arrangement, the timing stabilization winding is connected in series with the control winding during the passage of the second magnet pole to provide a stable ignition timing control signal to the control arrangement of the capacitor discharge ignition system.

REFERENCES:
patent: 3722488 (1973-03-01), Swift et al.
patent: 3861373 (1975-01-01), Allwang et al.
patent: 4036201 (1977-07-01), Burson
patent: 4056088 (1977-11-01), Carmichael
patent: 4108131 (1978-08-01), Shibukawa
patent: 4120277 (1978-10-01), Ehlen

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