Muffler for internal combustion engine

(19)

(11)

EP 0 947 674 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	12.01.2000 Bulletin 2000/02

(43)	Date of publication A2:
	06.10.1999 Bulletin 1999/40

(21)	Application number: 99105157.4

(22)	Date of filing: 29.03.1999

(51)	International Patent Classification (IPC)⁷: F01N 7/18, F01N 7/16

(84)	Designated Contracting States:
	AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
	Designated Extension States:
	AL LT LV MK RO SI

(30)

Priority:

03.04.1998 IT LC980002

(71)	Applicant: Polini Motori S.p.A.
	24027 Nembro (BG) (IT)

(72)	Inventor:
	Polini, Carlo 24020 Alzano Lombardo (BG) (IT)

(74)	Representative: Marietti, Giuseppe
	MARIETTI e GISLON S.r.l. Via Larga, 16 20122 Milano 20122 Milano (IT)

(54)	Muffler for internal combustion engine

(57) Exhaust muffler for internal combustion engines comprising at least two portions of external shell (1,2) reciprocally joined along perimeter edges (3) and internal separators (4) in one-piece with at least one of the portions of external shell to form chambers (5,6,7) and/or connecting pipes (8,9) fit to allow the passage of the exhaust gases from an entry section, or opening (10), to an exit section, or opening (11), for the exhaust gases.

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