EP 1318281 B1 20050831 - Active silencer for exhaust systems
Title (en)
Active silencer for exhaust systems
Title (de)
Aktiver Schalldämpfer für Abgasanlagen
Title (fr)
Silencieux actif pour système d'échappement
Publication
Application
Priority
DE 10159487 A 20011204
Abstract (en)
[origin: DE10159487C1] The sound damping device (1) has a hollow body (4) with at least one movable wall (6), operated by a drive (10), for generation of counter sound, acoustically coupled to the engine exhaust pipe (9). The movable wall is provided by the bottom of a piston (5), the hollow body providing a cylinder space within which the piston is reciprocated at a constant ratio to the engine revs.
IPC 1-7
IPC 8 full level
F01N 1/06 (2006.01)
CPC (source: EP)
F01N 1/065 (2013.01)
Designated contracting state (EPC)
DE FR GB IT SE
DOCDB simple family (publication)
DE 10159487 C1 20030220; DE 50204073 D1 20051006; EP 1318281 A2 20030611; EP 1318281 A3 20040107; EP 1318281 B1 20050831
DOCDB simple family (application)
DE 10159487 A 20011204; DE 50204073 T 20020813; EP 02018051 A 20020813