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Home >> Volvo >> 1998 >> C70 2D Convertible, Standard >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 72 (Ignition And Control Systems - Design And Function (Coupe)) >> Ignition And Control Systems Control Functions (B5234T3; B5254T; 1998) >> Turbocharger (TC) Control System >> Boost Pressure Control (BPC) Valve

Boost Pressure Control (BPC) Valve

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The boost pressure may become excessive if turbine speed is too high. This is prevented by the boost pressure control (BPC) valve (5), which bypasses a proportion of the exhaust gases flowing to the turbine.

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