(19)
(11) EP 2 221 458 A8

(12) CORRECTED EUROPEAN PATENT APPLICATION
Note: Bibliography reflects the latest situation

(15) Correction information:
Corrected version no 1 (W1 A1)

(48) Corrigendum issued on:
30.03.2011 Bulletin 2011/13

(43) Date of publication:
25.08.2010 Bulletin 2010/34

(21) Application number: 10004016.1

(22) Date of filing: 16.05.2007
(51) International Patent Classification (IPC): 
F01N 1/08(2006.01)
 F01N 1/16(2006.01)
(84) Designated Contracting States:
DE FR GB

(30) Priority: 18.05.2006 JP 2006139206

(62) Application number of the earlier application in accordance with Art. 76 EPC:
07734585.8 / 2024612

(71) Applicant: Toyota Jidosha Kabushiki Kaisha
Toyota-shi, Aichi-ken 471-8571 (JP)

(72) Inventors:
  • Hara, Takeshi
    Aichi-ken 471-8571 (JP)
  • Komitsu, Hideyuki
    Aichi-ken 471-8571 (JP)
  • Sudo, Masayuki
    Aichi-ken 444-8558 (JP)

(74) Representative: Kuhnen & Wacker 
Patent- und Rechtsanwaltsbüro Prinz-Ludwig-Strasse 40A
85354 Freising
85354 Freising (DE)

 
Remarks:
This application was filed on 15-04-2010 as a divisional application to the application mentioned under INID code 62.
 


(54) Muffler


(57) A muffler has a casing with a plurality of sound-muffling chambers, exhaust pipes that pass through at least two sound-muffling chambers and to pass through exhaust from an engine, a plurality of apertures provided in each exhaust pipe, and a plurality of valves provided in each of the apertures. In this muffler, the plurality of apertures are provided at the locations at which an exhaust flow from one aperture and an exhaust flow from another aperture do not interfere with each other. When there are two apertures, the apertures are provided at positions in the exhaust pipes at which the apertures do not face each other. For this reason, by avoiding interference between exhaust flows from the two apertures, it is possible to suppress an abnormal sound caused by the interference.