The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 28, 2002
Filed:
Apr. 06, 2001
Gerhard Stoll, Winnenden, DE;
Wolf Burger, Böblingen, DE;
Gustav Wölpert, Waiblingen, DE;
Thomas Rieger, Ingolstadt-Etting, DE;
Ronald Hotz, Urbach, DE;
Bernhard Dürr, Stuttgart, DE;
Andreas Stihl AG & Co., Waiblingen, DE;
Abstract
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 ( ).