Tailor to fit muffler

US9689301B2 · kind B2 · utility

Assignee

• Tenneco Automotive Operating Company LLC · US

Inventors

• Richard T. Carr · South Lyon, US
• Frederick M. Baumgartner · Elizabeth, US
• David R. Bednarz · Ann Arbor, US
• Deep Singh · Canton, US
• Bradley B. Walworth · Jackson, US

Key dates

• Filing date: Jul 28, 2015
• Grant date: Jun 27, 2017
• Expiry date: Jul 28, 2035

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T29/494
• WIPO field: Environmental technology
• WIPO sector: Chemistry

Abstract

A muffler includes a shell, baffles, and a plurality of pipes. The shell defines first and second end cavities and a central cavity. The end cavities have larger cross-sectional areas that a cross-sectional area of the central cavity. The baffles cooperate to form multiple chambers within the shell. A first inlet directs a first portion of the exhaust into a first chamber. A second inlet directs a second portion of the exhaust into a second chamber. A first pipe extends through first, third and fourth baffles and includes an inlet in the fourth chamber. The first pipe directs exhaust from the fourth chamber to a first outlet at the first end cavity. A second pipe extends through the second, third and fourth baffles and includes an inlet in the third chamber. The second pipe directs exhaust from the third chamber to a second outlet at the second end cavity.