Andreas Stihl Ag & Co.

Thomas Rieger

Bernhard D&uuml;rr

Gerhard Stoll

Wolf Burger

Gustav W&ouml;lpert

Ronald Hotz

The invention relates to an exhaust-gas muffler on an internal combustion engine in a motor chain saw. The exhaust-gas muffler includes a housing ( ) which is assembled of two housing shells ( ). The one housing shell ( ) has an exhaust-gas inlet ( ) and the other housing shell ( ) has an exhaust-gas outlet ( ). An inner wall ( ) as well as a catalytic converting element ( ) are provided in the inner space ( ) of the muffler housing ( ). The catalytic converting element ( ) is mounted between the exhaust-gas inlet ( ) and the exhaust-gas outlet ( ). In order to ensure an adequate catalytic converting treatment of the exhaust gas at low gas counterpressure, it is provided to divide the entering exhaust-gas flow ( ) and to conduct at least one of these component flows ( ) in contact with the catalytic converting element ( ). The component flows ( ) are brought together and mixed with other before exiting from the muffler housing ( ).

Growing community of inventors

Munich, Georgia

Thomas Rieger