Patent ID: 8347625
Filing Date: 2013-01-08
Classification: F01D,F02B,F02D,F05D,Y02T

Abstract:
1. A method for operating an actuator ( 10 ) for a wastegate actuating device ( 8 ) of a wastegate ( 7 ) in an exhaust gas turbocharger ( 2 ), comprising: electrically adjusting the wastegate with the aid of the actuator, wherein the wastegate is situated in the exhaust branch of the internal combustion engine, an exhaust gas quantity flowing through the exhaust gas turbocharger being adjusted as a function of an opening position of the wastegate; and controlling the actuator by an applied electrical power in a closed position of the wastegate to provide a varying closing pressure of the wastegate as a function of a characteristic curve of an exhaust gas counterpressure applied via the wastegate.