Global Patent Index - EP 0649982 A1

EP 0649982 A1 19950426 - Side branch resonator.

Title (en)

Side branch resonator.

Title (de)

Nebenschluss-Resonator.

Title (fr)

Résonateur branché en dérivation.

Publication

EP 0649982 A1 19950426 (DE)

Application

EP 94114289 A 19940907

Priority

DE 4336112 A 19931022

Abstract (en)

In order in the case of side branch resonator to achieve good damping (attenuation) of the suction noise cost effectively in a wide frequency range, the natural frequency of the resonator is adapted (matched) to the respective excitation frequency by automatically changing the geometry of its vibrating space (treadmill). For this purpose, the resonator is preferably designed as a bellows (4) having a defined spring characteristic. <IMAGE>

Abstract (de)

Um bei einem Nebenschluß-Resonator kostengünstig in einem weiten Frequenzbereich eine gute Dämpfung des Ansauggeräusches zu erzielen, wird die Eigenfrequenz des Resonators durch selbsttätige Änderung seiner Schwingungsraumgeometrie an die jeweilige Anregungsfrequenz angepaßt. Hierzu ist der Resonator vorzugsweise als Faltenbalg (4) mit definierter Federkennlinie ausgeführt. <IMAGE>

IPC 1-7

F02M 35/12; G10K 11/16

IPC 8 full level

F02M 35/12 (2006.01); G10K 11/16 (2006.01); G10K 11/172 (2006.01)

CPC (source: EP)

F02M 35/1222 (2013.01); F02M 35/1255 (2013.01); G10K 11/172 (2013.01)

Citation (search report)

  • [X] FR 1308738 A 19621109 - POLYCARBURE
  • [X] EP 0065076 A2 19821124 - KLOECKNER HUMBOLDT DEUTZ AG [DE]
  • [A] DE 1052169 B 19590305 - SIGISMOND WILMAN
  • [A] DE 3300499 A1 19840712 - FRAUNHOFER GES FORSCHUNG [DE]
  • [A] FR 2394676 A1 19790112 - LEPAPE ROGER [FR]
  • [X] PATENT ABSTRACTS OF JAPAN vol. 17, no. 21 (M - 1353) 14 January 1993 (1993-01-14)
  • [X] PATENT ABSTRACTS OF JAPAN vol. 14, no. 157 (M - 955)<4100> 27 March 1990 (1990-03-27)
  • [X] Soviet Inventions Illustrated, Section Q, Woche 8650, 24 Dez. 86 Derwent Publications Ltd London GB. Klasse Q53, Nr86-330897/50 SU-A-1224432 (Kamsk Large Car Com) (15-04-86)
  • [X] PATENT ABSTRACTS OF JAPAN vol. 13, no. 68 (M - 78)

Designated contracting state (EPC)

DE ES FR IT

DOCDB simple family (publication)

EP 0649982 A1 19950426; EP 0649982 B1 19961204; DE 4336112 A1 19950427; DE 59401202 D1 19970116; ES 2096389 T3 19970301

DOCDB simple family (application)

EP 94114289 A 19940907; DE 4336112 A 19931022; DE 59401202 T 19940907; ES 94114289 T 19940907