Patent ID: 11939891
Assignee: PIAGGIO & C. SPA
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F | IPC F

Claim 7:
8. The internal combustion engine according to claim 1 further comprising a second centrifugal device for varying the timing of said plurality of suction valves and said plurality of relief valves which are controlled by said second one of said first camshaft and second camshaft, wherein said second centrifugal device comprises:
a further driving disc mounted idle on said second one of said first camshaft and said second camshaft, said further driving disc rotating about a rotational axis of said second one of said first camshaft and said second camshaft;
a further driven disc which is integral with said second one of said first camshaft and said second camshaft; and
further drive elements for transmitting a motion between said further driving disc and said further driven disc, wherein said further driven disc and said further driving disc and said further drive elements are configured so as to cause a relative rotation of said further driven disc with respect to said further driving disc when the rotational speed of said further driven disc and said further driving disc exceeds the predetermined threshold,
wherein said second gear is integral with said further driving disc so that the rotation of a first driving disc mounted on said first one of said first camshaft and said second camshaft is transferred to said further driving disc mounted on said second one of said first camshaft and said second camshaft.