Patent ID: 6431527
Filing Date: 2002-08-13
Classification: F02M,Y10S

Abstract:
A rotary throttle valve carburetor comprising:a carburetor body having an air intake channel, a cylindrical chamber, and an air passage, the air intake channel extending through the carburetor body, the air intake channel having an intake portion disposed upstream, the cylindrical chamber communicating laterally through the air intake channel downstream of the intake portion, and the air passage communicating between the intake portion and the cylindrical chamber; a rotary throttle disposed rotatably and vertically moveably within the cylindrical chamber, the rotary throttle having a throttling bore extended laterally through the rotary throttle and aligned communicably with the air intake channel; an air guide tube disposed within the cylindrical chamber and extending transversely into the throttling bore; a fuel feed tube disposed radially inward of the air guide tube and concentrically to the rotary throttle, the fuel feed tube engaged at one end to the carburetor body and extending transversely into the throttling bore; and a passageway defined radially between the air guide tube and the fuel feed tube, the air passage communicating with the passageway, and the passageway communicating with the throttling bore.