Control device i.e. electronic controller, for controlling exhaust-gas turbocharger of loading air compressor utilized for compressing fresh air in petrol engine, has actuator controlling bypass flap in partial load operation of engine

摘要

The device (1) has an exhaust gas bypass (3) provided with a bypass flap (4) that is arranged parallel to an exhaust turbine. An actuator (7) controls the bypass flap under pressure-dependent in a partial load operation of a combustion engine. The actuator comprises a pressure cell (9) and a linkage (8) standing in mechanical connection with the bypass flap. The pressure cell comprises a pressure chamber (13) and a vacuum chamber (14) separated by a control membrane (10). A return spring (11) is arranged in the vacuum chamber and co-acts with the control membrane. Independent claims are also included for the following: (1) a combustion engine (2) a method for controlling an exhaust gas turbocharger of a loading air compressor.