Pierburg wastegate actuatorPierburg says its newly engineered wastegate actuator allows direct activation of the wastegate valve by being mounted on the hot turbine housing. It’s claimed thermal insulation from the housing, combined with efficient temperature control of the coolant prevents the actuator overheating under all operating conditions.

The company says the high level of cooling for the 12V DC motor (an EC motor is also available) means the motor load can be stepped up offering the advantage of a lower gear ratio between motor and actuator shaft, and a higher actuating torque.