Fuel economizer for cabureted internal combustion engines

A fuel economizer for internal combustion engines having an intake manifold and a carburetor thereon, comprises:

• a tubular body having an open inlet end and an open outlet end and means on the body for supporting the body in an intake manifold in aligned registry with a carburetor, whereby air and fuel flowing from a carburetor to an associated intake manifold passes through the economizer;
• means in the body defining trough-like liquid fuel collecting means to collect liquid fuel leaving the carburetor;
• said liquid fuel collecting means having means associated therewith for enabling flow of air over collected fuel therein in contacting relationship therewith to atomize the liquid fuel;
• air/fuel deflector means movably carried by the body at the outlet end thereof in the path of air and fuel exiting the outlet end of the body to promote turbulence in the air and fuel;
• and means yieldably biasing said deflector means toward closing relationship relative to the open outlet end, whereby the deflector means is moved toward open position in response to vacuum and increased flow in an intake manifold and is moved toward closed position by said biasing means under conditions of decreased vacuum and flow, said deflector means thus opening and closing in response to engine demand, and the economizer thus effecting thorough atomization of fuel and more efficient fuel combustion and consequently increasing the fuel economy of the engine.

A fuel economizer for internal combustion engines having an intake manifold and a carburetor thereon, comprise:

• a tubular body having an open inlet end and an open outlet end and means on the body for supporting the body in an intake manifold in aligned registry with an associated carburetor, whereby air and fuel from a carburetor passes through the economizer when in use;
• air/fuel deflector means movably carried by the body at the outlet end thereof in the path of air and fuel exiting the outlet end of the body to promote turbulence in the air and fuel;
• first resilient means yieldably biasing said deflector means toward closing relationship relative to the open outlet end;
• and second resilient means disposed between the deflector means and the body to urge the deflector means away from the open outlet end of the body, to thus damp movement of the deflector means under idle conditions of an engine with which the economizer is associated, to thus prevent undesired oscillatory movement of the deflector means, said deflector means being moved toward open position in response to vacuum and increased flow in an associated intake manifold and moved toward closed position by said first resilient means under conditions of decreased vacuum and flow, said deflector means thus opening and closing in response to engine demand, and the economizer thus effecting thorough atomization of fuel and more efficient fuel combustion and consequently increasing the fuel economy of an engine.