Structure of engine exhauster

Abstract

A structure of engine exhauster includes a front case, a board and a rear case. The front case has an opening and the rear case has a hole. Exhaust gas passes through the board combined between the front case and the rear case. A bending part is disposed in the board. An opening is disposed on the bending part. A beehive portion is disposed above the bending part for exhausting the exhaust gas. A check valve is disposed in the front case for entering unidirectional secondary air. Whereby, the exhaust gas from the front case is mixed up with the secondary air from the check valve of the front case, and then is exhausted from the hole of the rear case via the beehive portion of the board for further reducing air pollution.

1 . A structure of engine exhauster, comprising a front case, a board and a rear case; 
 wherein said front case has an opening, said rear case has a hole, exhaust gas passes through said board combined between said front case and said rear case; which is characterized in that:    a beehive portion disposed in said board for exhausting the exhaust gas; a check valve disposed in said front case for entering unidirectional secondary air; whereby, the exhaust gas from said front case is mixed up with the secondary air from said check valve of said front case, and then is exhausted from said hole of said rear case via said beehive portion of said board for further reducing air pollution.    
   
   
       2 . The structure of  claim 1 , wherein said beehive portion is wound in a cylindrical shape:  
   
   
       3 . The structure of  claim 1 , wherein said beehive portion is in a columnar shape.  
   
   
       4 . The structure of  claim 1 , wherein a secondary air inlet is disposed in said front case for mounting a pipe, said pipe passes through said check valve for entering unidirectional secondary air.  
   
   
       5 . The structure of  claim 1 , wherein a bending part is disposed in said board, an opening is disposed on said bending part, said beehive portion is disposed above said bending part.  
   
   
       6 . The structure of  claim 4 , wherein said secondary air inlet is disposed on an exhaust manifold for mounting a pipe, said pipe passes through said check valve for entering unidirectional secondary air.  
   
   
       7 . The structure of  claim 1 , wherein said check valve is a guided check valve.  
   
   
       8 . The structure of  claim 1 , wherein a check block of said check valve is one of a sphere, a cone stopper, a board and a diaphragm.  
   
   
       9 . The structure of  claim 1 , suitable for a mowing machine, a blower, a chain saw, a power generator, a pump and a lumber saw.