Automatic choke valve apparatus in an internal combustion engine

Details Automatic choke valve apparatus in an internal combustion engine Automatic choke valve apparatus in an internal combustion engine

1975-08-15

1977-06-07

Dority, Jr., Carroll B.

Internal-combustion engines

Starting device

For airplane

123119F, 261 39E, 261 64R, F02M 110, F02D 1108

Patent

active

040276406

ABSTRACT:
An automatic choke valve apparatus in an internal combustion engine in which an operation shaft connected to a choke valve provided in an intake passage of an internal combustion engine and a driving shaft connected to a pulse motor are interconnected through an intermediate torsion spring and are engaged with one another through circumferentially disposed front and rear pawls for being feed-driven only in a regular direction of rotation of the driving shaft. By effecting reverse direction of rotation of the driving shaft and then regular direction of rotation of, the choke valve is first placed into a starting position setting and then into an open-degree position after engine firing is carried out by the pulse motor effecting rotation in the regular direction for a length of time and at a speed both depending on engine temperature.

REFERENCES:
patent: 3401919 (1968-09-01), Seufert
patent: 3534720 (1970-10-01), Dubois
patent: 3818881 (1974-06-01), Hosho
patent: 3948240 (1976-04-01), Hirosawa

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