Patent ID: 6042088
Filing Date: 2000-03-28
Classification: F02M

Abstract:
A changeable Venturi carburetor including a cold start and high loading auxiliary fuel duct comprising:a carburetor having a front frame, a body, a back seat and a float chamber; the body including at least a changeable Venturi means which has a steel rope wheel and a butterfly valve, and a main fuel duct system which has a main throttle and a fuel pin; andan auxiliary fuel duct including a vacuum valve and a temperature delay vacuum valve engageable with the carburetor, the vacuum valve having at one end a third air nozzle connecting with a first air nozzle in the temperature delay vacuum valve, the temperature delay vacuum valve further having a second air nozzle communicating with the main throttle, the second air nozzle connectable with the first air nozzle for air pressure at vicinity of the main throttle to transmit to the third air nozzle to control the vacuum valve motion and fuel supply of the auxiliary fuel duct.