The engine service temperature is maintained equalized with the electronic control of the electromagnetic fan coupling. When a quick cooling change is needed, the fan drive reaction time is considerably reduced.
Other advantages are:
emission reduction;
lower fuel consumption;
cooling means temperature (coolant, charge air and engine oil and refrigerant agent) close to nominal values;
increase in space heating efficiency;
increase in retarder's braking efficiency;
quick engine service temperature attained at startup;
it is not necessary to confirm the revolutions to compare between nominal and actual value;
noise level reduction;
reduced fan reaction time by the two stages quick speed adjustment and lower system inertia.