US 7,464,694 B2 · Variable flow control method and device between air intake and throttle

Abstract

A variable flow control method and device between an air intake and a throttle comprise at least one one-way valve with suitable restoring function between the air intake and the throttle, especially for a fuel-injected car. Corresponding functions can be generated among the one-way valve, an air intake manifold and the throttle to adjust and control an engine so that the engine can rapidly get various rotating rates corresponding to various degrees of vacuum respectively as natural or original air taking can be effectively and rapidly accelerated when the accelerator is trampled rapidly, and reflect the improvement on performances responding to torsion and acceleration of the various rotating rates.

Claims7

Dependent claims

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.

A variable flow control device for a fuel-injected engine comprising:

at least one one-way valve having a restoring portion and being located between an air intake and a throttle of the fuel-injected engine, the restoring portion biasing 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, the throttle and an air intake manifold controlling the fuel-injected engine,
wherein, when the throttle is located in the rapid acceleration position, the at least one one-way valve increasing a vacuum in an air intake manifold of the fuel-injected engine and increasing a power output of the fuel-injected engine, and 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.

Dependencies are inferred from the claim text.

Variable flow control method and device between air intake and throttle

Life of this patent

Variable flow control method and device between air intake and throttle

Life of this patent

Abstract

Claims7