Patent ID: 9562496
Date: 2017-02-07
CPC Classifications: F02M

Claim:
1. A carburetor comprising: a carburetor body having a venturi passage that conveys air from an air inlet to an air outlet; a throttle valve that controls flow of the air in the venturi passage, wherein the throttle valve is movable into a closed position, an open position, and at least one transition position between the closed position and the open position; a fuel bowl that holds fuel for mixing with the air in the venturi passage; a main nozzle that discharges the fuel from the fuel bowl to the air in the venturi passage when the throttle valve is in the open position; a secondary circuit that discharges fuel from the fuel bowl to the air in the venturi passage when the throttle valve is in the closed position, the transition position, and the open position; a filter that is configured to remove particulate matter from the fuel in the fuel bowl prior to discharge via the secondary circuit; wherein the filter is located externally of the fuel bowl; and wherein the fuel bowl has an outlet passage that drains the fuel from the fuel bowl and an inlet passage that conveys the fuel from the outlet passage to the secondary circuit, wherein the filter is located downstream of the outlet passage and upstream of the inlet passage.