METHOD AND DEVICE FOR REGULATING OR CONTROLLING A COMPRESSOR OF AN EXHAUST GAS TURBOCHARGER

摘要

The invention relates to a method for regulating or controlling the compressor (2) of an exhaust gas turbocharger (3) of an internal combustion engine (4), having the following method steps: measuring an ambient air pressure (PU); measuring a static pressure (PV) upstream of the engine inlet; measuring the rotational speed (U) of the exhaust gas turbocharger (3); determining a static pressure (PE) which is present directly at the compressor inlet (11) by calculating a vacuum (Pdyn) in the compressor inlet line (11) and subtracting the calculated vacuum (Pdyn) from the measured ambient air pressure (PU); determining a static pressure (PA) which is present directly at the compressor outlet (12) by calculating the pressure loss (PDV) in the compressor outlet line (18) and adding the calculated pressure loss (PDV-) to the measured static pressure (PV); and regulating or controlling the compressor operation corresponding to at least one of the determined pressure values (PE or PA) and the rotational speed signal (SU). ® KIPO & WIPO 2009