Patent ID: 6393835
Filing Date: 2002-05-28
Classification: F01N,F02B

Abstract:
An exhaust-gas muffler on an internal combustion engine of a work apparatus including a motor-driven chain saw, the engine having an exhaust-gas channel through which the exhaust gas is discharged, the exhaust-gas muffler comprising:a muffler housing including first and second housing shells; said first housing shell having an exhaust-gas inlet communicating with said exhaust-gas channel for receiving the inflowing exhaust gas flow; said muffler housing including an exhaust-gas outlet for conducting the exhaust gas out of said muffler housing; a catalytic converting element disposed between said exhaust-gas inlet and said exhaust-gas outlet; and, means for guiding a first component flow of said inflowing exhaust-gas flow in contact with said catalytic converting element and a second component flow of said inflowing exhaust gas flow essentially without contact with said catalytic converting element and for bringing said first and second component flows together and for mixing said component flows together before said component flows exit through said exhaust-gas outlet from said housing.