Patent ID: 6622992
Filing Date: 2003-09-23
Classification: F02M,Y10S

Abstract:
A carburetor for providing a fuel and air mixture to an engine, comprising:a body; a fuel metering assembly having a fuel metering diaphragm carried by the body, having two generally opposed sides and defining in part an air chamber on one side and a fuel chamber on its other side; a first flow path communicating with the air chamber and constructed to be in communication with a crankcase chamber of an engine; a second flow path in the body at least partially independent of the first flow path; a first enrichment valve disposed in communication with the first flow path and movable between a first position permitting fluid flow from the first flow path therethrough and into the air chamber to cause an enriched fuel and air mixture to be delivered to the engine in response to such fluid flow and a second position substantially preventing fluid flow from the first flow path therethrough and into the air chamber; and a second enrichment valve disposed in communication with at least the second flow path and movable between first and second positions to affect fluid flow through the second flow path and thereby selectively enrich the fuel and air mixture delivered to the engine.