Fluid swirling device having rotatable vanes

A fluid swirling device for insertion in an exhaust system of an internal combustion engine, comprising:

• a housing open at both longitudinal ends thereof;
• an axle mounted within said housing;
• a set of rotatable vanes rotatably mounted on said axle and positioned in path of a fluid stream passing through said housing, each vane of said set of rotatable vanes angled with respect to said axle so that exhaust fluid of the fluid stream impinging on said set of rotatable vanes produces rotation of said set of rotatable vanes relative to said axle and so that the intake fluid is deflected by said set of rotatable vanes to impart a swirling motion to the fluid stream;
• a set of stationary vanes rigidly mounted on said axle so that said set of stationary vanes is stationary relative to said housing and relative to said set of rotatable vanes, said set of stationary vanes positioned in path of the fluid stream passing through said housing, said set of rotatable vanes and said set of stationary vanes positioned to allow passage of the fluid stream through said both longitudinal ends.

A fluid swirling device for insertion in an intake or exhaust system of an internal combustion engine, comprising:

• a housing;
• an axle mounted within said housing;
• a set of rotatable vanes rotatably mounted on said axle and positioned in path of a fluid stream passing through said housing, each vane of said set of rotatable vanes angled with respect to said axle so that exhaust fluid of the fluid stream impinging on said set of rotatable vanes produces rotation of said set of rotatable vanes relative to said axle and so that the intake fluid is deflected by said set of rotatable vanes to impart a swirling motion to the fluid stream;
• a set of stationary vanes rigidly mounted on said axle so that said set of stationary vanes is stationary relative to said housing and relative to said set of rotatable vanes, said set of stationary vanes positioned in path of the fluid stream passing through said housing, said set of rotatable vanes and said set of stationary vanes positioned to allow passage of the fluid stream through said both longitudinal ends, said set of stationary vanes angled solely in axial direction and in direction of the fluid stream entering said housing.

A fluid swirling device for insertion in an intake or exhaust system of an internal combustion engine, comprising:

• a housing entirely circumferentially closed at both longitudinal end portions thereof;
• an axle mounted within said housing;
• a set of rotatable vanes rotatably mounted on said axle and positioned in path of a fluid stream passing through said housing, each vane of said set of rotatable vanes angled with respect to said axle so that exhaust fluid of the fluid stream impinging on said set of rotatable vanes produces rotation of said set of rotatable vanes relative to said axle and so that the intake fluid is deflected by said set of rotatable vanes to impart a swirling motion to the fluid stream;
• a set of stationary vanes rigidly mounted on said axle so that said set of stationary vanes is stationary relative to said housing and relative to said set of rotatable vanes, said set of stationary vanes positioned in path of the fluid stream passing through said housing, said set of rotatable vanes and said set of stationary vanes positioned to allow passage of the fluid stream through said both longitudinal ends, said set of stationary vanes angled in axial direction and in direction of the fluid stream entering said housing.