Capacitive discharge ignition system with continuous timing adva

Details Capacitive discharge ignition system with continuous timing adva Capacitive discharge ignition system with continuous timing adva

1990-06-29

1991-06-18

Argenbright, Tony M.

Internal-combustion engines

High tension ignition system

Using capacitive storage and discharge for spark energy

123149C, F02P 308

Patent

active

050242040

ABSTRACT:
A continuously advancing capacitive discharge ignition system for small internal combustion engines is disclosed in which both the negative and the positive half-cycles of the control winding output signal may be used for the continuous timing advance. Gating of the ignition SCR is controlled by applying a voltage divided first control signal to the SCR gate and a phase shifted second control signal to the SCR cathode. The predetermined voltage differential between the first control signal and the second control signal, which is reached progressively earlier with increased engine speed, is used to gate on the SCR earlier as speed increases to achieve continuous timing advance.

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