Global Patent Index - EP 4136330 A4

EP 4136330 A4 20240417 - A NOISE PROCESSING UNIT FOR A MOTOR VEHICLE

Title (en)

A NOISE PROCESSING UNIT FOR A MOTOR VEHICLE

Title (de)

RAUSCHVERARBEITUNGSEINHEIT FÜR EIN KRAFTFAHRZEUG

Title (fr)

UNITÉ DE TRAITEMENT DE BRUIT POUR VÉHICULE AUTOMOBILE

Publication

EP 4136330 A4 20240417 (EN)

Application

EP 21788413 A 20210415

Priority

  • IN 202041016201 A 20200415
  • IN 2021050376 W 20210415

Abstract (en)

[origin: WO2021210020A1] The present subject matter relates to an exhaust system with a noise processing unit (225) like a muffler for a motor vehicle. The noise processing unit (225) is part of an exhaust system (102) connected to an internal combustionengine (101). The noise processing unit (225) comprises one or more intermediatechamber(s) (311) that are selectively disposed physically between plurality of firstchamber(s) (301, 302). One or more second chamber(s) (321) are disposedsubsequent to the plurality of first chambers (301, 302). The noise processing unit(225) is configured to direct exhaust gases to flow through the plurality of firstchambers (301, 302), subsequently through the one or more intermediatechambers (311) and then through the one or more second chambers (321). Thenoise processing unit (225) occupies less space and performs effective attenuationof noise.

IPC 8 full level

F01N 1/12 (2006.01)

CPC (source: EP)

F01N 1/084 (2013.01); F01N 2470/08 (2013.01); F01N 2490/02 (2013.01); F01N 2490/155 (2013.01); F01N 2490/18 (2013.01); F01N 2590/04 (2013.01)

Citation (search report)

Designated contracting state (EPC)

AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

DOCDB simple family (publication)

WO 2021210020 A1 20211021; WO 2021210020 A4 20211216; CN 115461530 A 20221209; EP 4136330 A1 20230222; EP 4136330 A4 20240417

DOCDB simple family (application)

IN 2021050376 W 20210415; CN 202180026938 A 20210415; EP 21788413 A 20210415