Muffler with variable sound-absorbing characteristics

US6499562B1 · kind B1 · utility

Assignee

• Zeuna-Starker GmbH & Co. KG · DE

Inventors

• Gerhard Elfinger · Pfaffenhofen an der Ilm, DE
• Wolfgang Hahnl · Grimma, DE
• Friedrich Wellner · Holzheim, DE
• Andreas Mayr · Meitingen, DE
• Klaus Spindler · Aystetten, DE
• Thomas Koehler · Lake Forest Park, US
• Hans Bussmann · Ebikon, CH

Key dates

• Filing date: Jun 29, 2000
• Grant date: Dec 31, 2002
• Expiry date: Jun 29, 2020

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F01N1/166
• WIPO field: Environmental technology
• WIPO sector: Chemistry

Abstract

A muffler for pulsating gases, especially exhaust gases of internal combustion engines, comprises a housing into which an inlet conduit enters, from which at least on outlet conduit exits and which is divided by at least one partition wall into at least two chambers. In this muffler the flow cross section of a flow path connecting two chambers and/or of an outlet conduit can be varied by means of an adjustable closure element. An actuating element acting on the closure element is provided in the region of the exit cross section of the inlet conduit.