Gas and liquid contact apparatus – Fluid distribution – Valved
Patent
1982-06-18
1984-05-08
Miles, Tim R.
Gas and liquid contact apparatus
Fluid distribution
Valved
261 53, 261DIG56, F02M 722
Patent
active
044473710
ABSTRACT:
A side draft carburetor is disclosed in which an eccentrically mounted throttle plate is provided with an aperture for passage of air therethrough and for movement of the throttle plate over a nozzle block interferingly projecting into the main air passageway of the carburetor. The nozzle block is equipped with a nozzle for introducing fuel into a venturi passageway formed between the nozzle block and a cam surface located about the rotational axis of the throttle plate; the cam surface moving with the throttle plate to vary the size and shape of the venturi passageway at the point of fuel introduction. This produces a finely atomized fuel mixture substantially centrally of the main air stream for optimum diffusion of the incoming fuel. In a modified version, the variable venturi passageway is effected by a flexible leaf spring responsive to a cam surface movable with the throttle plate to produce a passageway varying between convergent and divergent form as the throttle plate moves between closed and open positions. In both embodiments, the variable venturi passageway is restricted to a finite cross section of the carburetor's main intake air passageway defined by the effective aperture through the throttle plate, the nozzle block, the cam surface and laterally spaced barriers between the cam and the nozzle block.
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