Altitude compensating device for carburetors

Details Altitude compensating device for carburetors Altitude compensating device for carburetors

1980-01-22

1981-09-29

Miles, Tim R.

Gas and liquid contact apparatus

Fluid distribution

Valved

261121B, F02M 724

Patent

active

042922585

ABSTRACT:
An altitude compensating device for carburetors has an air metering valve in fluid communication with the fuel passage of the carburetor and a pressure-sensitive bellows adapted to drivingly control the air metering valve such that the flow rate of the compensating air is increased as the altitude increases. A closed control air chamber is defined at the upstream side of the air metering valve. Venturi vacuum around the venturi portion of the intake passage of the carburetor and air are introduced into the control air chamber so that the pressure in the latter is reduced below the atmospheric pressure with an increase of the intake air flow rate to the engine and the compensating air is decreased to eliminate undesirable low concentration tendency of the mixture.

REFERENCES:
patent: 2389219 (1945-11-01), Thompson et al.
patent: 3810606 (1974-05-01), Masaki
patent: 3831910 (1974-08-01), Schadbolt
patent: 3925521 (1975-12-01), Otani
patent: 3931372 (1976-01-01), Pierlut
patent: 4129622 (1978-12-01), Tamazawa et al.
patent: 4153652 (1979-05-01), Ogita
patent: 4177224 (1979-12-01), Yamanaka et al.

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