Patent ID: 9062630
Filing Date: 2015-06-23
Classification: B01F,F02M,F04B

Abstract:
1. A carburetor, comprising: a main bore through which a fuel and air mixture is delivered from the carburetor; a fuel metering assembly from which fuel is provided to the main bore; a main fuel pump supplying fuel to the fuel metering assembly; a separate supplemental fuel pump including a supplemental diaphragm that defines a fuel chamber on one side from which supplemental fuel may be discharged to at least temporarily increase the amount of fuel discharged from the carburetor and a reference chamber on the other side that is communicable with a reference pressure source; and an electrically actuated control valve that is movable between a first position communicating the reference pressure source with the reference chamber to cause the fuel chamber to discharge supplemental fuel to increase the amount of fuel discharged from the carburetor and a second position to at least substantially prevent communication of the reference pressure source with the supplemental fuel pump diaphragm when the control valve is in its second position to thereby inhibit or prevent supplemental fuel from being discharged from the fuel chamber.