Exhaust fumes reduction device for internal combustion engine

An exhaust fumes reduction device for an internal combustion engine mounted at an end of an exhaust pipe of the internal combustion engine to smooth a discharge flow of exhaust gas comprising;

• a housing pipe connected to the end of the exhaust pipe to discharge the exhaust gas;
• a vortex pipe mounted inside the housing pipe to increase a speed of the exhaust gas introduced into the housing pipe and discharge the exhaust gas spirally;
• and
• an external pipe mounted on an outside of the housing pipe and in communication with the housing pipe to allow outside air to flow in and to assist smooth discharge of exhaust gas discharged to the housing pipe;
• wherein the housing pipe includes:
• a housing pipe body having a predetermined length, which is mounted at the end of the exhaust pipe of the vehicle to discharge the exhaust gas;
• a front-side air outlet port formed in a plurality on a front side of the housing pipe body to allow the outside air to flow in;
• a rear-side air outlet port formed in a plurality on a rear side of the housing pipe body to allow the outside air to flow in;
• and
• a plurality of vortex pipe support pins formed on inner circumferential surfaces of the front side and rear side of the housing pipe to fix the vortex pipe while maintaining a predetermined distance from the housing pipe body;
• and
• wherein a spiral guide ring is further mounted between the external pipe and the housing pipe to discharge spirally air introduced into the external pipe.