Air turbine for combustion engine

An air turbine apparatus, comprising:

• a housing defining an expansion chamber;
• an inlet in said housing, said inlet having a diameter less than said expansion chamber;
• an outlet in said housing;
• an airfoil proximate to said inlet to directly receive incoming gases, said airfoil including an aperture extending longitudinally therethrough and aligned with said inlet and outlet;
• and
• a tube having a proximal end and a distal end, said proximal end of said tube coupled to said airfoil to directly receive gases passing through said aperture of said airfoil, said tube coupled to said outlet of said housing, said tube dividing at least a portion of said housing into an expansion chamber and an induction chamber and having a plurality of perforations formed therein,
• said airfoil positioned relative to said inlet and outlet and one another to define first and second air flow paths,
• said first air flow path being straight and passing through said inlet, through said aperture of said airfoil, and through said outlet,
• said second air flow path passing around said airfoil and then combining with said first air flow path,
• wherein said gases flowing in said second air flow path and passing around said airfoil do so at a higher velocity and lower pressure than gases flowing through said airfoil.

An air turbine apparatus, comprising:

• a housing defining an expansion chamber;
• an inlet in said housing, said inlet having a diameter less than said expansion chamber;
• an outlet in said housing;
• an airfoil comprising a frustoconical-like structure and proximate to said inlet to directly receive incoming gases, said airfoil including an aperture extending longitudinally therethrough and aligned with said inlet and outlet, said airfoil positioned within said housing such that a narrow end of said airfoil is oriented toward the inlet of said housing,
• a tube having a proximal end and a distal end, said proximal end of said tube coupled to said airfoil to directly receive gases passing through said aperture of said airfoil, and said tube coupled to said outlet of said housing, said tube dividing at least a portion of said housing into an expansion chamber and an induction chamber and having a plurality of perforations formed therein
• said airfoil positioned relative to said inlet and outlet and one another to define first and second air flow paths,
• said first air flow oath being straight and passing through said inlet, through said aperture of said airfoil, and through said outlet,
• said second air flow path passing around said airfoil and then combining with said first air flow path,
• wherein said gases flowing in said second air flow path and passing around said airfoil do so at a higher velocity and lower pressure than gases flowing through said airfoil.

An air turbine apparatus, comprising:

• a housing defining an expansion chamber;
• an inlet in said housing, said inlet having a diameter less than said expansion chamber;
• an outlet in said housing;
• an airfoil comprising a frustoconical-like structure and proximate to said inlet to directly receive incoming gases, said airfoil including an aperture extending longitudinally therethrough and aligned with said inlet and outlet, said airfoil positioned within said housing such that a narrow end of said airfoil is oriented toward the inlet of said housing, wherein said aperture of said airfoil defines a plurality of convolutions therein for encouraging rotational flow of gases passing through said aperture;
• and
• a plurality of blades disposed between said airfoil and an interior surface of said housing, said blades oriented to cause rotational flow of gases passing over said blades
• said airfoil positioned relative to said inlet and outlet and one another to define first and second air flow paths,
• said first air flow path being straight and passing through said inlet, through said aperture of said airfoil, and through said outlet,
• said second air flow oath passing around said airfoil and then combining with said first air flow path between said airfoil and said outlet,
• wherein the gases flowing in said second air flow path and passing around said airfoil do so at a higher velocity and lower pressure than gases flowing through said airfoil.