Device for automatic control of electronic spark ignition advanc

Details Device for automatic control of electronic spark ignition advanc Device for automatic control of electronic spark ignition advanc

1976-05-10

1977-07-19

Dority, Jr., Carroll B.

Internal-combustion engines

Intake manifold

Manifold tuning, balancing or pressure regulating means

1231465A, 340347P, 23515021, 324 16T, F02P 504

Patent

active

040361900

ABSTRACT:
Automatic control of spark advance in an electronic ignition system for an internal combustion engine is effected by using a first electromagnetic pick-up cooperating with a protuberance which is phase-displaced on a rotary part (flywheel) relative to top dead center by the maximum advance angle required, and a second pick-up which cooperates with peripheral teeth on the rotary part. Pulses from the second pick-up are counted during a predetermined interval (T) initiated by a pulse from the first pick-up to provide a count which is stored as a reference value representing the required spark advance angle, this stored reference value being subsequently compared with the number of pulses from the second pick-up counted with the commencement of the next pulse from the first pick-up to provide a spark-triggering pulse upon parity of the number of these subsequently counted pulses with the reference value.

REFERENCES:
patent: 3738339 (1973-06-01), Huntzinger et al.
patent: 3904856 (1975-09-01), Monpetit
patent: 3906205 (1975-09-01), Yoshida et al.
patent: 3935846 (1976-02-01), Zelenka
patent: 3942491 (1976-03-01), Seite et al.
patent: 3998193 (1976-12-01), Ives et al.

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