Diaphragm-type carburetor
AssigneeWalbro Japan, Inc.
InventorMasao Suzuki
Life of this patent
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Abstract
A diaphragm-type carburetor has a body defining at least in part an air intake passage, a fuel metering chamber that receives fuel for delivery into the air intake passage, a fuel supply passage communicating a supply of fuel with the fuel metering chamber, and a bypass passage communicating the fuel supply passage with the air intake passage to facilitate removal of air and fuel vapor from the carburetor. The bypass passage is routed around, and does not communicate directly with the fuel metering chamber. Fuel vapor or air in the carburetor is quickly led from the bypass passage to the air intake passage to prevent a large quantity or volume of fuel vapor or air from staying in or flowing to the fuel metering chamber and thereby adversely affecting the operation of the carburetor.
Claims11
A carburetor, comprising:
- a body;
- an air intake passage defined at least in part in the body;
- a fuel metering chamber in fluid communication with the air intake passage and adapted to receive a supply of fuel to be fed into the air intake passage;
- a fuel supply passage defined at least in part in the body communicating a supply of fuel with the fuel metering chamber;
- and
- a bypass passage communicating the fuel supply passage with the air intake passage wherein the bypass passage is not in direct communication with the fuel metering chamber.
Dependencies are inferred from the claim text.