Carburation devices with idle adjustment

Details Carburation devices with idle adjustment Carburation devices with idle adjustment

1977-07-25

1979-10-23

Myhre, Charles J.

Internal-combustion engines

Intake manifold

Manifold tuning, balancing or pressure regulating means

123103E, 261DIG18, F02D 908

Patent

active

041716868

ABSTRACT:
A carburetor for an internal combustion engine comprises a fuel idling circuit opening into the intake pipe downstream of a driver-actuated main throttle. Idle regulation means comprise a first pneumatic element connected to that part of the intake pipe downstream of the main throttle and a second pneumatic element having a movable part connected to the main throttle means by a unidirectional connection such that the throttle means can be opened to an additional extent. The second pneumatic element is subjected to the vacuum in a chamber connected to said part of the intake pipe and also connected to atmosphere by a valve carried by the movable part of the second element and opened by the first pneumatic element moving with respect to the second pneumatic element when there is an increase in the degree of vacuum in the intake pipe. Additional means preventing the main throttle from closing beyond a partially open position and which are disabled after successful cranking may be provided.

REFERENCES:
patent: 3577962 (1971-05-01), Ojala
patent: 3752450 (1973-08-01), Charron
patent: 3768450 (1973-10-01), Harrison

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