Fixed blade turbulence generator

A device for improving fuel/air mixing in an internal combustion engine incorporating a fuel injection system comprising:

• at least two helically twisted blades positioned in an inner bore of an intake port opening;
• said helically twisted blades being attached to the inner circumference of an opening in an intermediate member operatively dispositioned in an oversized intake manifold port opening in an engine intake manifold gasket;
• said intake manifold gasket being positioned between an engine intake manifold and an intake port;
• said helically twisted blades extending into a portion of an engine intake manifold passage and also extending into a portion of an intake port passage and being generally angled at 45.degree. in relation to an air flow path through said inner bore and said intermediate member;
• said helically twisted blades having leading edges being generally angled at 45.degree. to trailing edges of said helically twisted blades;
• said helically twisted blades having a face in a partial sine wave configuration.

A method for retro-fitting an internal combustion engine for improved fuel/air mixing comprising the following steps:

• a first removing of an engine intake manifold;
• a second removing of an engine intake manifold gasket;
• cleaning said engine intake manifold and an engine head on which said engine intake manifold gasket was mounted to provide smooth mating surfaces;
• installing a device for improving fuel/air mixing, said device comprising at least two helically twisted blades positioned in an inner bore of an intake port opening, said helically twisted blades being attached to the inner circumference of an opening in an intermediate member being secured between the engine intake manifold and intake port, said helically twisted blades extending into a portion of an engine intake manifold passage and also extending into a portion of an intake port passage and being angled between 30.degree. and 60.degree. in relation to a fuel/air flow path through said inner bore of said intake port opening;
• said helically twisted blades having leading edges at an angle greater than 20.degree. but less than 60.degree. to trailing edges of said helically twisted blades;
• first reinstalling of said engine intake manifold gasket;
• second reinstalling of said engine intake manifold.

A method for retro-fitting an internal combustion engine for improved fuel/air mixing comprising the following steps:

• a first removing of an engine intake manifold;
• a second removing of an engine intake manifold gasket;
• a third removing of a manifold alignment ring;
• cleaning said engine intake manifold and an engine head on which said engine intake manifold gasket was mounted to provide smooth mating surfaces;
• a first reinstalling of said engine intake manifold gasket;
• a second reinstalling of a modified manifold alignment ring for improving fuel/air mixing, said modified manifold alignment ring comprising at least two helically twisted blades, said helically twisted blades being attached to the inner circumference of said modified manifold alignment ring and being located in an inner bore of an intake port opening by said modified manifold alignment ring, said modified manifold alignment ring being secured between said engine intake manifold and said intake port opening, said helically twisted blades extending into a portion of an engine intake manifold passage and also extending into a portion of an intake port passage and being angled between 30.degree. and 60.degree. in relation to a fuel/air flow path through said inner bore of said intake port opening,
• said helically twisted blades having leading edges at an angle greater than 20.degree., but less than 60.degree. to trailing edges of said helically twisted blades;
• a third reinstalling of said engine intake manifold.