Carburetor

摘要

A carburetor for connection to an internal combustion engine having a housing provided with a mixing passage for the flow of air to the engine; a throttle at the downstream end of the passage; a fuel spray bar extending transversely across the passage upstream of the throttle having transversely oppositely disposed fuel orifices facing the walls of the passage; a pair of venturi plates mounted for pivotal movement about individual axes upstream of the bar and spaced oppositely and transversely from the bar, the plates having distal ends and pivoting between closed, convergent positions in which the distal ends are adjacent to the bar and open positions in which the plates diverge from the bar, thereby defining an adjustable throat; a source of fuel; a conduit interconnecting the orifices and the source; a plunger-actuated valve in the conduit for controlling the flow of fuel from the source; a rotationally mounted cam adjacent to the valve having a cam surface in controlling relation with the valve; and a linkage connecting the plates and the cam for actuation of the valve concurrently with movement of the plates to regulate the air-fuel mixture in the passage.