Advance control for breakerless ignition system

Details Advance control for breakerless ignition system Advance control for breakerless ignition system

1983-07-25

1985-01-15

Lall, Parshotam S.

Internal-combustion engines

High tension ignition system

Safety device

123618, 123640, 307234, F02P 500

Patent

active

044933070

ABSTRACT:
A breakerless ignition system in which an electronic advance circuit (30) generates an electrical trigger signal (SPKE) and a mechanical advance circuit generates a mechanical trigger signal (PCP). The mechanical trigger signal (PCP) and electrical trigger signal (SPKE) are combined in a trigger circuit (28) to generate an activation signal to a power switching device (40) which causes an ignition circuit (32) to fire a spark plug (54). In operation the electrical trigger signal (SPKE) normally provides an accurate timing signal to ignite the plug (54) and the trigger circuit (28) masks the mechanical trigger signal (PCP) to prevent double firing. Upon failures or special conditions when the (SPKE) signal is absent the (PCP) signal will provide operation in a back-up mode to ignite plug (54).

REFERENCES:
patent: 3741184 (1973-06-01), Tanner et al.
patent: 3906258 (1975-09-01), Moe
patent: 4069801 (1978-01-01), Stevens
patent: 4112895 (1978-09-01), Habert
patent: 4138977 (1979-02-01), Grather et al.
patent: 4201173 (1980-05-01), Okada et al.
patent: 4228778 (1980-10-01), Rabus et al.

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