Global Patent Index - EP 2446128 A1

EP 2446128 A1 20120502 - TUBULAR ACOUSTIC INSULATING ELEMENT

Title (en)

TUBULAR ACOUSTIC INSULATING ELEMENT

Title (de)

ROHRFÖRMIGES AKUSTISCHES DÄMMELEMENT

Title (fr)

ELÉMENT D ISOLATION ACOUSTIQUE TUBULAIRE

Publication

EP 2446128 A1 (DE)

Application

EP 10728196 A

Priority

  • EP 2010058952 W
  • DE 102009030258 A

Abstract (en)

[origin: WO2010149723A1] The invention relates to an exhaust system (4) composed of a plurality of components for an internal combustion engine (2) for connecting to a manifold (3). The exhaust system (3) comprises at least one first section (41), which is provided indirectly or directly after the manifold (3) in the flow direction, and a second section (42), which is directly adjacent thereto in the flow direction, wherein the two sections (41, 42) are connected to each other by a mechanical decoupling element (40). The resonant oscillations in the range above 600 Hz are to be attenuated in the exhaust system (4) by more than 15 dB and, at the same time, the exhaust system (4) is to be sufficiently rigid and self-supporting and designed to be lastingly gas-tight. For this purpose, a single-walled and self-supporting acoustic insulating element (1) is integrated in the exhaust system (3) in the flow direction upstream of, or in, the first section (41), wherein the acoustic insulating element (1) comprises at least one inner connecting piece (10) and at east one outer connecting piece (15), which is offset toward the outside from a central line (14) in the radial direction, and a compressed central part (12) is provided, which is disposed between the two connecting pieces (10, 15) and connects the two connecting pieces (10, 15) and which forms a stop (120) having a U- or S-shaped cross-section.

IPC 8 full level

F01N 13/18 (2010.01); F01N 13/08 (2010.01)

CPC (source: EP)

F01N 13/08 (2013.01); F01N 13/1816 (2013.01); F01N 2260/10 (2013.01)

Citation (search report)

See references of WO 2010149723A1

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 SE SI SK SM TR

DOCDB simple family (publication)

WO 2010149723 A1 20101229; BR PI1010067 A2 20160315; CN 102482979 A 20120530; EP 2446128 A1 20120502; EP 2446128 B1 20150506; US 2012160600 A1 20120628; US 8443933 B2 20130521

DOCDB simple family (application)

EP 2010058952 W 20100623; BR PI1010067 A 20100623; CN 201080037129 A 20100623; EP 10728196 A 20100623; US 201013380067 A 20100623