| 摘要 |
<p>A method for controlling an internal combustion engine (1) supercharged by means of a turbocharger (12) provided with a turbine (13) and a compressor (14); the control method comprises the steps of establishing a predetermined limit speed of the turbocharger (12); calculating a reduced lower limit speed of the turbocharger (12) and a reduced higher limit speed of the turbocharger (12) which are variable depending on the predetermined limit speed of the turbocharger (12) and on the absolute temperature (To) upstream of the compressor (14); determining an overspeed interval of the turbocharger (12) comprised between the reduced lower limit speed and the reduced higher limit speed of the turbocharger (12); calculating a current reduced limit speed; and controlling the turbocharger (12) to bring the reduced limit speed to a value lower than the reduced lower limit speed every time a value of a current reduced limit speed comprised within the overspeed interval is detected.</p> |
