EP 1138887 A3 20020619 - Acoustic transducer for exhaust gas pulsations
Title (en)
Acoustic transducer for exhaust gas pulsations
Title (de)
Schallwandler für Abgaspulsationen
Title (fr)
Transducteur acoustique pour les pulsations de gaz d'échappement
Publication
Application
Priority
DE 10015697 A 20000329
Abstract (en)
[origin: EP1138887A2] The device has a branch member (11,11') connected to the exhaust system (2) of an IC engine, to branch-off exhaust pulsation. It also has a modulator head (15) to radiate airborne sound into the engine space, dependent upon exhaust pulsation. The head is formed as a resonance body, and pref. consists of a support frame and a membrane tensioned in it. It is at least partially placed inside the engine chamber and/or the vehicle interior.
IPC 1-7
IPC 8 full level
A61P 31/12 (2006.01); B60Q 5/00 (2006.01); C12M 1/16 (2006.01); F01N 7/00 (2006.01); G10K 11/22 (2006.01)
CPC (source: EP)
F01N 1/065 (2013.01); G10K 11/22 (2013.01)
Citation (search report)
- [XY] FR 642008 A 19280817
- [A] DE 4435296 A1 19960404 - BAYERISCHE MOTOREN WERKE AG [DE]
- [A] WO 0004532 A1 20000127 - TUEV AUTOMOTIVE GMBH UNTERNEHM [DE], et al
- [A] DE 4233252 C1 19931216 - BAYERISCHE MOTOREN WERKE AG [DE]
- [YA] PATENT ABSTRACTS OF JAPAN vol. 014, no. 575 (M - 1062) 20 December 1990 (1990-12-20)
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
DOCDB simple family (publication)
EP 1138887 A2 20011004; EP 1138887 A3 20020619; EP 1138887 B1 20031001; DE 10015697 C1 20011220; DE 50100695 D1 20031106
DOCDB simple family (application)
EP 01108092 A 20010329; DE 10015697 A 20000329; DE 50100695 T 20010329