Fuel controller for internal combustion engine

A fuel controller for controlling fuel supply to an internal combustion engine comprising;

• a venturi portion formed in an air-intake path adapted to feed air to said internal combustion engine;
• a throttle valve installed in said air-intake path on the downstream side of said venturi portion;
• an auxiliary throttle valve installed between said throttle valve and said venturi portion;
• a fuel injection portion provided between said throttle valve and said venturi portion and injecting fuel fed through a fuel path;
• a bypass air path formed to have one end opened at said venturi portion and the other end opened at the upstream side thereof;
• a sensor means provided in said bypass air path for detecting an amount of air passing therethrough;
• a means provided in said bypass air path for controlling the amount of air passing therethrough at a constant level;
• a means provided in a fuel path communicating with said fuel injection portion for controlling an amount of fuel passing through said fuel path in accordance with the amount of air passing through said air-intake path;
• and
• a link mechanism for operating said auxiliary throttle valve and said throttle valve interlockedly.