Patent ID: 7464694

Claim:
A variable flow control method for a fuel-injected engine, which comprises the steps of: a) selecting at least one one-way valve having a restoring function and positioning the at least one one-way valve between an air intake and a throttle of the fuel-injected engine, the restoring function returning the at least one one-way valve to a normally closed position, the throttle being adjustable between normal acceleration positions and a rapid acceleration position; and b) increasing a vacuum in an air intake manifold of the fuel-injected engine and increasing a power output of the fuel-injected engine utilizing the at least one one-way valve when the throttle is located in the rapid acceleration position, wherein, when the throttle is located in one of the normal acceleration positions, the vacuum in an air intake manifold of the fuel-injected engine and the power output of the fuel-injected engine are increased by the at least one one-way valve.