Constant-pressure carburetor

Gas and liquid contact apparatus – With external supply or removal of heat – Heat producer

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Details

123549, 261 26, 261 30, 261145, 261 50A, 261DIG82, 261DIG81, F02M 1504

Patent

active

043594336

ABSTRACT:
In a constant-pressure carburetor having a fuel/air mixing chamber (3) which operates under reduced pressure, fuel feed means through which the fuel is drawn into the mixing chamber (3) from a float chamber (6) as required, an air inlet duct (1) having an automatically vacuum controlled air intake valve (2) upstream of the mixing chamber (3), and a suction duct having a driver actuated throttle member (4) downstream of the mixing chamber (3), the fuel feed means includes a fuel atomizer nozzle (5) having a central fuel supply passage (14) surrounded concentrically at its outer end by an annular constricting atomizing air outlet (15) whereby the velocity vectors of fuel and atomizing air at the nozzle outlet differ in magnitude and direction, and proportioning means for regulating the flow of fuel through the central passage (14) of the nozzle (5) and including a member (11) which is movable towards and away from the inlet (10) to the passage (14) by a control (12) operated in response to the output (A) from an electronic control unit (13) having one or more operating parameter impuls (E.sub.1 to E.sub.N). Atomizing air is supplied to the outlet (15) of the nozzle (5) by a passage (16) communicating with the air inlet duct (1). Alternatively the passage (16) may communicate with an air compressor. The mixing chamber wall is heated and the fuel atomizer nozzle (5) leads from the mixing chamber wall obliquely into said mixing chamber.

REFERENCES:
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