EP 1939416 B1 20090819 - Variable geometry muffler fo an exhaust system of an internal combustion engine
Title (en)
Variable geometry muffler fo an exhaust system of an internal combustion engine
Title (de)
Schalldämpfer mit variabler Geometrie für ein Abgassystem eines Verbrennungsmotors
Title (fr)
Silencieux à géométrie variable pour système d'échappement d'un moteur à combustion interne
Publication
Application
Priority
EP 06425877 A 20061229
Abstract (en)
[origin: EP1939416A1] A variable geometry muffler (1) for an exhaust system of an internal combustion engine; the muffler (1) displays: a tubular body (2), which displays an inlet opening (3), an outlet opening (4) and a labyrinth (5) which determines a path for the exhaust gases from the inlet opening (3) to the outlet opening (4); and a bypass valve (10), which is arranged within the tubular body (2) to modify the geometry of the labyrinth (5) according to the exhaust gas pressure; the bypass valve (10) displays a lid (11), which is coupled to a bypass opening (12) and is mobile from a closed position of the bypass opening (12) to an opening position of the bypass opening (12) by effect of the exhaust gas pressure and against the bias of an elastic body which tends to maintain the lid (11) in the closed position; the elastic body consists of an elastic foil (13), which is folded as a "U" and displays a mobile end (14) which supports the lid (11) and a fixed end (15) which is opposite to the mobile end (14) and which is integral with a fixed part of the muffler (1).
IPC 8 full level
F01N 1/08 (2006.01); F01N 1/16 (2006.01); F01N 13/08 (2010.01)
CPC (source: EP US)
F01N 1/083 (2013.01 - EP US); F01N 1/084 (2013.01 - EP US); F01N 1/163 (2013.01 - EP US); F01N 1/165 (2013.01 - EP US); F01N 1/166 (2013.01 - EP US)
Designated contracting state (EPC)
DE ES FR GB IT
DOCDB simple family (publication)
EP 1939416 A1 20080702; EP 1939416 B1 20090819; BR PI0705651 A 20080819; CN 101210508 A 20080702; DE 602006008646 D1 20091001; US 2008156578 A1 20080703; US 2009229911 A1 20090917
DOCDB simple family (application)
EP 06425877 A 20061229; BR PI0705651 A 20071227; CN 200710306337 A 20071228; DE 602006008646 T 20061229; US 46905909 A 20090520; US 96138807 A 20071220