Boost Pressure Control Valve Vacuum Actuator

During boost pressure control, the turbocharger boost pressure control valve(s) is opened with controlled vacuum from the boost pressure control valve vacuum transducer (Y31/4). Activation occurs via the control rod (b).






137a Boost pressure Control valve vacuum actuator
a Boost pressure Control valve
b Control rod
e Control line connection

Function Diagram, Boost Pressure Control:

Function Diagram, Turbocharger: