Global Patent Index - EP 0961906 B1

EP 0961906 B1 2003-06-04 - METHOD FOR ACTIVE ATTENUATION OF A COMBUSTION OSCILLATION, AND USE OF THE METHOD

Title (en)

METHOD FOR ACTIVE ATTENUATION OF A COMBUSTION OSCILLATION, AND USE OF THE METHOD

Title (de)

VERFAHREN ZUR AKTIVEN DÄMPFUNG EINER VERBRENNUNGSSCHWINGUNG UND ANWENDUNG DES VERFARENS

Title (fr)

PROCEDE D'ATTENUATION ACTIVE D'UNE OSCILLATION DE COMBUSTION, ET UTILISATION DE LA PROCEDE

Publication

EP 0961906 B1 (DE)

Application

EP 98906838 A

Priority

  • DE 9800211 W
  • DE 19704540 A

Abstract (en)

[origin: DE19704540C1] The present invention relates to a method for active attenuation of a combustion oscillation in a combustion chamber (4) provided with at least two control elements (8). Said method is characterized in that an operating lever of the control elements (8) requires the combustion oscillation to be measured at a lower number of points than that of control elements (8). This is obtained mainly by using the symmetry of a sound vibration (30) generated by self-excitation in the combustion chamber (4).

IPC 1-7 (main, further and additional classification)

F23N 5/16; F23R 3/00

IPC 8 full level (invention and additional information)

F23M 99/00 (2010.01); F23N 5/16 (2006.01); F23R 3/00 (2006.01)

CPC (invention and additional information)

F23R 3/00 (2013.01); F23M 20/005 (2013.01); F23N 5/16 (2013.01); F23R 2900/00013 (2013.01); F23R 2900/00014 (2013.01)

Citation (examination)

Designated contracting state (EPC)

CH DE FR GB IT LI

EPO simple patent family

DE 19704540 C1 19980723; EP 0961906 A1 19991208; EP 0961906 B1 20030604; JP 2001510550 A 20010731; JP 4130479 B2 20080806; US 6205764 B1 20010327; WO 9835186 A1 19980813

INPADOC legal status


2018-04-30 [PG25 GB] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

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2017-08-01 [REG DE R119] APPLICATION DEEMED WITHDRAWN, OR IP RIGHT LAPSED, DUE TO NON-PAYMENT OF RENEWAL FEE

- Document: DE 59808633

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2016-01-15 [REG FR PLFP] FEE PAYMENT

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2004-09-15 [REG CH PL] PATENT CEASED

2004-05-26 [26N] NO OPPOSITION FILED

- Effective date: 20040305

2004-03-19 [ET] FR: TRANSLATION FILED

2004-01-31 [PG25 CH] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

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2003-10-22 [GBT] GB: TRANSLATION OF EP PATENT FILED (GB SECTION 77(6)(A)/1977)

2003-07-10 [REF] CORRESPONDS TO:

- Document: DE 59808633 P 20030710

2003-06-13 [REG CH EP] ENTRY IN THE NATIONAL PHASE

2003-06-04 [AK] DESIGNATED CONTRACTING STATES:

- Designated State(s): CH DE FR GB IT LI

2003-06-04 [REG GB FG4D] EUROPEAN PATENT GRANTED

- Free text: NOT ENGLISH

2002-04-03 [RTI1] TITLE (CORRECTION)

- Free text: METHOD FOR ACTIVE ATTENUATION OF A COMBUSTION OSCILLATION, AND USE OF THE METHOD

2000-11-15 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20000929

1999-12-08 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 19990805

1999-12-08 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): CH DE FR GB IT LI