Opening device for the butterfly valve of a carburetor

Details Opening device for the butterfly valve of a carburetor Opening device for the butterfly valve of a carburetor

1977-04-12

1979-02-06

Myhre, Charles J.

Internal-combustion engines

Intake manifold

Manifold tuning, balancing or pressure regulating means

123103C, 261DIG19, F02D 1108

Patent

active

041378768

ABSTRACT:
An anti-pollution system for internal combustion engines, in particular for avoiding the emission of unburned fuel during changes of motor speed in deceleration. A pneumatic capsule acts to open the throttle under the action of the vacuum in the induction pipe by the intermediary of a spring-loaded valve set to open at a given level of vacuum. The capsule has a diaphragm which tends to close the throttle of the carburetor under the action of an elastic member over its entire return travel and under the additional action of a second elastic means of return, called a compensator spring, over a part of the return travel, from the position of maximum opening of the throttle under the action of the diaphragm, when the compensator spring is compressed against an adjustable stop under the action of the vacuum.

REFERENCES:
patent: 2315912 (1943-04-01), Udale
patent: 2588136 (1952-03-01), Mallory
patent: 3623465 (1971-11-01), Wawrziniok
patent: 4015568 (1977-04-01), Horiye et al.

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