(19)
(11) EP 0 488 431 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
10.06.1992 Bulletin 1992/24

(43) Date of publication A2:
03.06.1992 Bulletin 1992/23

(21) Application number: 91202223.3

(22) Date of filing: 31.08.1991
(51) International Patent Classification (IPC)5: F02B 75/04
(84) Designated Contracting States:
AT BE CH DE DK ES FR GB GR IT LI LU NL SE

(30) Priority: 08.11.1990 IT 171190

(71) Applicant: Mignone, Giuseppe
I-14010 Cisterna d'Asti, Asti (IT)

(72) Inventor:
  • Mignone, Giuseppe
    I-14010 Cisterna d'Asti, Asti (IT)

(74) Representative: Riccardi, Sergio et al
Riccardi & Co. Via Macedonio Melloni, 32
20129 Milano
20129 Milano (IT)


(56) References cited: : 
   
       


    (54) Internal combustion engine with variable combustion chamber


    (57) In an internal-combustion engine of new conception, either a mobile supplementary piston (3), or an oscillating membrane (9) is added in the cylinder (1) or a connecting rod (11) with variable length is adopted; which, suitably calibrated have the function of varying the volume of the combustion chamber (16), to maintain the compression pressure constant at all RPM rates and the ignition pressure limited at all RPM rates to improve the working cycle, modifying it, increasing its performance and efficiency, eliminating the detonation and the consequent use of anti-knock agents which pollute the atmosphere.






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