A DIGITAL WASTE GATE VALVE ARRANGEMENT AND METHOD OF OPERATING A DIGITAL WASTE GATE VALVE ARRANGEMENT IN AN INTERNAL COMBUSTION ENGINE

摘要

The present invention relates to a digital wasted gate arrangement (100) in an internal combustion piston engine (12) having at least one turbo supercharger (14) having a compressor section (16) and a turbine section (18) The arrangement includes a flow control unit (106) having three or more individually controllable on-off valve units, the digital wastegate arrangement comprising a pneumatic actuator arranged to individually control each on-off valve unit System 102 as shown in FIG. The arrangement 100 includes at least one control gas inlet port 108 connected to a pneumatic actuator system 102 and the control gas inlet port is connected through a control gas passage 22 to a compressor- And the control gas actuating the flow control unit 106 is arranged to be available for the pneumatic actuator system 102 via the control gas passages 22 and 22 ' do.