Capacitive-discharge ignition system with step timing advance

Details Capacitive-discharge ignition system with step timing advance Capacitive-discharge ignition system with step timing advance

1990-09-05

1991-09-17

Argenbright, Tony M.

Internal-combustion engines

High tension ignition system

Using capacitive storage and discharge for spark energy

123149C, F02P 308, F02P 504

Patent

active

050485024

ABSTRACT:
A capacitive-discharge ignition system having a step advance is disclosed. In a preferred embodiment, the ignition thyristor is gated on at low engine speeds by a first control means in response to a primary winding output signal, and is gated on at higher engine speeds by a second control means in response to a charge winding output signal. In alternate embodiments, the first control means is responsive to a primary winding signal having a first polarity, and the second control means is responsive to a primary winding signal of the opposite polarity. The charge winding is located on a leading pole of a stator, with the primary winding disposed on a distinct, trailing pole. This arrangement enables the charge capacitor to fully charge before the ignition thyristor is gated on.

REFERENCES:
patent: 3861373 (1975-01-01), Allwang et al.
patent: 3941111 (1976-03-01), Carmichael et al.
patent: 4036201 (1977-07-01), Burson
patent: 4056088 (1977-11-01), Carmichael
patent: 4170977 (1979-10-01), Carmichael et al.
patent: 4237844 (1980-12-01), Lathlaen
patent: 4480624 (1984-11-01), Anderson
patent: 4509493 (1985-04-01), Nash
patent: 4576138 (1986-03-01), Wolf

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