Cold start fuel/air mixture supply device for spark ignition int

Details Cold start fuel/air mixture supply device for spark ignition int Cold start fuel/air mixture supply device for spark ignition int

1982-03-29

1984-06-05

Dolinar, Andrew M.

Internal-combustion engines

Starting device

For airplane

123180E, 123438, 261 39D, F02M 108

Patent

active

044521901

ABSTRACT:
A combined accelerator pump and cold start fuel/air mixture supply device has an automatic throttle valve in a mixture supply passage, a fuel control valve controlling flow of fuel drawn into the passage through an inlet upstream of the throttle valve, and an air valve upstream of the fuel inlet. A primary spring tends to seat the air valve. A light, secondary spring urges a plunger against the air valve to augment the load of the primary spring for a predetermined time interval after the engine begins to run under its own power. A valve in a pipe opens automatically at the end of the predetermined time interval to apply engine inlet manifold depression to the end of the plunger remote from the air valve and thereby to separate the plunger from the air valve so that only the primary spring acts on the air valve.

REFERENCES:
patent: 3917760 (1975-11-01), Swatman
patent: 4180533 (1979-12-01), Bonse
patent: 4192277 (1980-03-01), Ross
patent: 4222236 (1980-09-01), Hegedus et al.
patent: 4276238 (1981-06-01), Yoshikawa et al.

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