(19)
(11) EP 0 340 834 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
31.01.1990 Bulletin 1990/05

(43) Date of publication A2:
08.11.1989 Bulletin 1989/45

(21) Application number: 89201024.0

(22) Date of filing: 20.04.1989
(51) International Patent Classification (IPC)4: F02F 1/42, F01L 1/26, F01L 1/04
(84) Designated Contracting States:
DE ES FR GB SE

(30) Priority: 05.05.1988 IT 2046788

(71) Applicant: MOTORI MODERNI s.r.l.
I-50018 Scandicci (Firenze) (IT)

(72) Inventor:
  • Chiti, Carlo
    I-20148 Milano (IT)

(74) Representative: Mittler, Enrico et al
c/o Marchi & Mittler s.r.l. Viale Lombardia, 20
20131 Milano
20131 Milano (IT)


(56) References cited: : 
   
       


    (54) System of valves and related operating devices for internal combustion engines having high specific horsepower


    (57) Each cylinder (1) of the internal combustion engine comprises a group of intake valves (2, 2′) and a group of exhaust valves (3). At least one (2, 2′) of said groups is formed by three circumferentially spaced out valves (2, 2′) operated by a single camshaft (9). Of said three valves the two lateral ones (2) are of smaller diameter with respect to the central one (2′) and have stems (6) which are parallel to one another and inclined with respect to that (6′) of the central valve (2′). At least one of said stems (6, 6′) has its axis displaced laterally with respect to the axis of rotation (10) of the camshaft (9). Means (18, 18′) are provided for offsetting the lateral displacement of the above axis.







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