Patent ID: 8047321

Claim:
Hybrid propulsion and transmission system for a motorcycle of the type comprising at least an internal combustion engine ( 10 ) having a shaft and at least one driving wheel ( 22 ), the system comprising a first electric machine ( 14 ) having a rotating stator and a rotor ( 30 ), provided with first mechanical connection means ( 12 ) to said at least one internal combustion engine ( 10 ), and a second electric machine ( 18 ) having a rotor ( 34 ), coupled with said first electric machine ( 14 ) through electric and/or electronic connection means ( 16 ) and coupled to said at least one driving wheel ( 22 ) through second mechanical connection means ( 20 ) said first electric machine ( 14 ) being coupled with said second electric machine ( 18 ) and with said at least one driving wheel ( 22 ) through said second mechanical connection means ( 20 ), wherein the shaft of said internal combustion engine ( 10 ) is journalled to a rotating stator ( 28 ) of said first electric machine ( 14 ), so that said stator ( 28 ) is capable of being rotatably driven by the shaft of said internal combustion engine ( 10 ).