Ignition timing control devices for engines

Internal-combustion engines – Intake manifold – Manifold tuning – balancing or pressure regulating means

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Details

1231465A, F02P 504

Patent

active

039540901

ABSTRACT:
An ignition timing control device comprising a vacuum advance mechanism of the type controlling the ignition timing in response to the negative pressure in a carburetor, a negative pressure line between the carburetor and the vacuum advance mechanism, and a thermostatic valve for opening the negative pressure line to the surrounding atmosphere only when the temperature of an engine is within a predetermined temperature range.

REFERENCES:
patent: 2876754 (1959-03-01), Obermaier
patent: 3521610 (1970-07-01), Coudriet
patent: 3680533 (1972-08-01), Soberski
patent: 3789811 (1974-02-01), Franz et al.
patent: 3800759 (1974-04-01), Cedar
patent: 3810451 (1974-05-01), Fales
patent: 3812832 (1974-05-01), Scott
patent: 3841515 (1974-10-01), Ota

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