To provide an idle fuel supply device of a carburetor, wherein an air passage connecting an upstream portion of a throttle valve of an intake path with a downstream portion is provided to a carburetor body, and fuel in a fuel reservoir chamber is supplied to the middle of the air passage, so that atomization of the fuel is promoted by mixing the fuel with the air in the air passage, whose flow speed is very fast.
An idle air passage 26 connecting the upstream portion of a throttle valve 24 of an intake path 30 with the downstream portion, and a fuel reservoir chamber 27 are installed to a carburetor body 32. A passage 2 extending from a constant pressure fuel chamber 13 is connected with a fuel reservoir chamber 27 via a fuel regulating needle valve 31. A low speed fuel injection hole 28 is opened near a closed position of the throttle valve 24 from the fuel reservoir chamber 27. A passage 2a extending from the fuel reservoir chamber 27 is connected with the middle part of the idle air passage 26.
| JP3794474 | FUEL SUPPLY REGULATION DEVICE OF CARBURETOR |
| JPS62294753 | FEEDBACK TYPE CARBURETOR |
ABEI TAKASHI
SUZUKI MASAO
Next Patent: PULSATION TYPE DIAPHRAGM FUEL PUMP DEVICE OF CARBURETOR