Component overview: Function

The DDE provides the electric charging pressure actuator with a pulse-width modulated signal (PWM signal). The operating range of the signal lies between 10 % and 95 %, whereby 10 % means guide vanes opened and 95 % means guide vanes closed.

The electronics in the charge-air pressure actuator convert the PWM signal into a setting angle and activate the actuator motor. The charge-air pressure actuator itself is self-diagnosable and reports faults to the DDE.