Patent ID: 7059304

Claim:
A drive device ( 41 ) for electrical injectors of a common rail fuel injection system of an internal combustion engine, comprising a power circuit ( 42 ) having a drive circuit ( 11 ) for each electrical injector ( 12 ); said drive circuit ( 11 ) comprising switching means ( 27 , 28 , 29 ) controlled selectively to regulate the current flowing through said electrical injector ( 12 ); said drive device also comprising a control circuit ( 43 ) for controlling operation of each drive circuit ( 11 ) of said power circuit ( 42 ), and being characterized in that said control circuit ( 43 ) comprises: a number of control modules ( 44 ), each for selectively controlling the switching means ( 27 , 28 , 29 ) of a respective drive circuit ( 11 ), and supplying a state signal (S FLAG ) indicating the operating state of the control module ( 44 ); and synchronization means ( 45 ) for receiving and processing said state signals (S FLAG ) to generate a common synchronization signal (S SINC ) for synhcronizing said control modules ( 44 ); each said control module ( 44 ) synchronizing and coordinating, as a function of said synchronization signal (S SINC ), the drive actions imparted to the switching means ( 27 , 28 , 29 ) of the corresponding drive circuit ( 11 ), with the drive actions imparted by the other control modules ( 44 ) to the switching means ( 27 , 28 , 29 ) of the respective drive circuits ( 11 ).