Gas and liquid contact apparatus – Fluid distribution – Valved
Patent
1984-11-01
1986-03-25
Miles, Tim
Gas and liquid contact apparatus
Fluid distribution
Valved
261121B, 261 35, 261DIG68, F02M 308
Patent
active
045782288
ABSTRACT:
A carburetor for small motors has a housing with a carburetor bore wherein air and fuel are mixed to an air fuel mixture. The fuel enters the carburetor bore through fuel jets. A throttle valve is pivotally mounted in the carburetor bore by means of which the fuel-air mixture quantity is adjusted in dependence upon the operating condition of the engine. The throttle valve and the inner wall surface of the carburetor bore conjointly define an air gap in the idling position. An idling fuel outlet jet communicates with the carburetor bore in the region of this air gap and is connected to the control chamber containing the fuel. The idling fuel outlet jet together with a ventilation bore communicate with an emulsion chamber of the control compartment. Further, an idling control part is provided which is movable into the air gap whereby an outlet opening of the ventilation bore communicating with the emulsion chamber is passed over. In this way, the ratio of fuel to air in the emulsion chamber can be adapted to the air requirements when flowing into the carburetor bore from the outlet jet. By means of a change of the free cross-sectional opening of the ventilation jet occurring simultaneously with the entry of the control part into the air gap, the air to fuel ratio remains constant so that a subsequent adjustment of the components of the mixture is unnecessary.
REFERENCES:
patent: 2419956 (1947-05-01), Kuzelka
patent: 3454264 (1969-07-01), Sarto
patent: 3575390 (1971-04-01), Bickhaus et al.
patent: 3608874 (1971-09-01), Beckmann
patent: 3937766 (1976-02-01), Garcea et al.
Andreas Stihl
Miles Tim
Ottesen Walter
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