Air-fuel ratio controller of variable-venturi type carburetor

Details Air-fuel ratio controller of variable-venturi type carburetor Air-fuel ratio controller of variable-venturi type carburetor

1981-10-26

1982-11-23

Miles, Tim R.

Gas and liquid contact apparatus

Fluid distribution

Valved

261121B, 261DIG74, F02M 906

Patent

active

043604820

ABSTRACT:
An air-fuel ratio controller of a variable-venturi type carburetor having an air inlet port opening at the upstream side of the suction piston, a branching chamber connected to a passage leading from the air inlet port and branching the passage into a bleed-side passage leading to the bleed portion of the carburetor and a by-pass passage leading to the downstream side of the suction piston, and a valve device disposed in the branching chamber. The valve device is adapted to move reciprocatingly to vary the areas of the bleed-side passage and the by-pass passage relatively in such a manner that, when the area of one of the passages is increased, the area of the other passage is decreased. In consequence, the position of the suction piston is never changed by the change in the amount of bleed air, so that the control of the air-fuel ratio of the mixture is very much facilitated.

REFERENCES:
patent: 2216677 (1940-10-01), Schuttler
patent: 3984503 (1976-10-01), Gistucci
patent: 4111169 (1978-09-01), Lawrence
patent: 4290399 (1981-09-01), Takada et al.

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