Patent ID: 8091358

Claim:
A control method of an internal combustion engine ( 1 ) supercharged by means of a turbocharger ( 12 ) provided with a turbine ( 13 ) and with a compressor ( 14 ); the control method comprises the steps of: establishing at least one operating limit curve ( 29 ; 30 ) on a Reduced Mass Flow Rate/Compression Ratio map; establishing at least one intervention curve ( 31 ; 32 ) of a wastegate valve ( 16 ) which adjusts a bypass pipe ( 15 ) of the turbine ( 13 ) on a Reduced Mass Flow Rate/Compression Ratio map; establishing at least one intervention curve ( 33 ; 34 ) of a Poff valve ( 19 ) which adjusts a bypass pipe ( 18 ) of the compressor ( 14 ) on a Reduced Mass Flow Rate/Compression Ratio map; using the operating limit curve ( 29 ; 30 ) to limit the pressure target downstream of the compressor ( 14 ) used by the engine control; controlling the opening of the wastegate valve ( 16 ) if the intervention curve ( 31 ; 32 ) of the wastegate valve ( 16 ) is exceeded; and controlling the opening of the Poff valve ( 19 ) if the intervention curve ( 33 ; 34 ) of the Poff valve ( 19 ) is exceeded.