(19)
(11) EP 0 272 646 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
24.05.1989 Bulletin 1989/21

(43) Date of publication A2:
29.06.1988 Bulletin 1988/26

(21) Application number: 87118825.6

(22) Date of filing: 18.12.1987
(51) International Patent Classification (IPC)4: F02F 1/22
(84) Designated Contracting States:
AT DE ES FR GB SE

(30) Priority: 23.12.1986 IT 2283386

(71) Applicant: Dott. Vittorio Gilardoni S.p.A.
I-22054 Mandello del Lario Como (IT)

(72) Inventor:
  • Panzeri, Umberto
    I-22043 Galbiate (Como) (IT)

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


(56) References cited: : 
   
       


    (54) Two-stroke internal combustion engine


    (57) The invention concerns the exhaust ports of a two-stroke internal combustion engine, comprising one or more overhanging protruberances which serve to support the piston rings, allowing a larger area exhaust port without the engine seizing or other inconveniences.







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