Ignition timing control apparatus for engine during warm-up

Details Ignition timing control apparatus for engine during warm-up Ignition timing control apparatus for engine during warm-up

1977-02-23

1978-06-13

Croyle, Carlton R.

Internal-combustion engines

Intake manifold

Manifold tuning, balancing or pressure regulating means

F02P 512

Patent

active

040942821

ABSTRACT:
An ignition timing control system for internal combustion engines during warm-up utilizes opposed chambers separated by a flexible diaphragm to control movement of a rod to advance or retard the ignition timing. Temperature responsive electric switches energize electromagnetic valves to control vacuum pressures in said chambers, so that as a cold engine warms up, the ignition timing changes from advance to retard in a series of steps.

REFERENCES:
patent: 3631845 (1972-01-01), Walker et al.
patent: ;3687120 (1972-08-01), Lenz
patent: 3978831 (1976-09-01), Yoshikawa
patent: 3994269 (1976-11-01), Takaoka et al.
patent: 4016844 (1977-04-01), Tanaka et al.
patent: 4022169 (1977-05-01), Tanaka et al.

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