Electric Throttle Valve (EDK) Control
The throttle valve assembly of the M62 TU is an electric throttle valve (EDK) controlled by an integral EML function of the ME 7.2. The throttle plate is positioned by a gear reduction DC motor drive.
Similar to the original Bosch EML 1.2 and 1.7 systems, the motor is controlled by proportionately switched high/low PWM signals providing precise plate positioning. The PWM signal is at a basic frequency of 2000 Hz.