Boost Pressure Control Valve Task/Design/Function

Design

Task
Controlling boost pressure

Operation
The boost pressure control valve is closed by the boost pressure control vacuum transducer (Y31/5) through the vacuum unit (110/10), as a result of which the exhaust gases are passed to the turbine wheel (g). The bypass flap (a) is actuated by the control linkage (b). When the bypass flap is open, no precompression occurs and the engine operates as a naturally aspirated engine.