Exhaust system in an implement driven by internal combustion engine

Abstract

An exhaust system for an implement, especially hedge clippers, trimmers, brush cutters, chain saws and the like, driven by an internal combustion engine, comprising an exhaust pipe for receiving exhaust gas from the engine, wherein the exhaust pipe has an outlet end opening out into the atmosphere, and a circumferentially extending condensate-guiding element disposed on the internal wall of the exhaust pipe, wherein the condensate-guiding element narrows the flow cross-section of the exhaust pipe.

1 . An exhaust system for an implement driven by an internal combustion engine, comprising: 
 an exhaust pipe adapted to receive exhaust gas from said internal combustion engine, wherein said exhaust pipe has an outlet end that is adapted to open out into the atmosphere; and    a circumferentially extending condensate-guiding element disposed on an internal wall of said exhaust pipe, wherein said condensate-guiding element is adapted to narrow a flow cross-section of said exhaust pipe.    
   
   
       2 . An exhaust system according to  claim 1 , wherein said exhaust pipe is disposed downstream of, and in communication with, a muffler, and wherein said condensate-guiding element is disposed in a pipe section of said exhaust pipe that is disposed externally of said muffler.  
   
   
       3 . An exhaust system according to  claim 1 , wherein said condensate-guiding element is disposed in the immediate vicinity of, and upstream of, said outlet end.  
   
   
       4 . An exhaust system according to  claim 1 , wherein a cross-section of said condensate-guiding element forms a separation point for said exhaust gas.  
   
   
       5 . An exhaust system according to  claim 1 , wherein said condensate-guiding element extends helically along said internal wall of said exhaust pipe.  
   
   
       6 . An exhaust system according to  claim 5 , wherein said condensate-guiding element has about two to six spirals.  
   
   
       7 . An exhaust system according to  claim 6 , wherein said condensate-guiding element has about four spirals.  
   
   
       8 . An exhaust system according to claim ( 5 ), wherein a downstream end of said condensate-guiding element is guided in the vicinity of a center line of said exhaust pipe.  
   
   
       9 . An exhaust system according to  claim 5 , wherein said condensate-guiding element is a helical wire spring.  
   
   
       10 . An exhaust system according to  claim 9 , wherein an upstream end of said wire spring is bent radially inwardly.  
   
   
       11 . An exhaust system according to  claim 9 , wherein said wire spring is held in said exhaust pipe in a radially pre-tensioned manner.