Schalldämpfer mit einem Helmholtz Resonator And Fahrzeug mit einem Solchen Schalldämpfer

Details

Veröffentlichungs-Nr.

EP3557015

Aktenzeichen

EP18168497

Anmeldetag

20. April 2018

Veröffentlichung

4. November 2020

Erteilung

4. November 2020

Rechtsraum

EP

IPC

F01N1/00F01N1/02F01N1/16

Abstract

A muffler for a vehicle, where the muffler comprises a partition wall that divides the interior in a first chamber and a second chamber, where an inlet pipe comprising a perforated section arranged in the first chamber and a closed section arranged in the first chamber, where the outlet opening of the inlet pipe is arranged in the second chamber, a first outlet pipe comprising an inlet opening arranged in the first chamber and an outlet opening arranged outside of the muffler, where the muffler comprises a second outlet pipe having an inlet opening arranged in the second chamber, and where the second outlet pipe is provided with an exhaust valve adapted to open or close the exhaust gas flow through the second outlet pipe. The advantage of the invention is that a muffler with an improved low frequency noise attenuation and low backpressure is provided.

Anmelder

Firma

Volvo Car Corporation

Land

🇸🇪 Schweden

Fachgebiete