Patent ID: 6308664
Filing Date: 2001-10-30
Classification: F01P,F02B,G05D,Y02T

Abstract:
An arrangement for controlling the temperature of a medium, comprising:at least two energy-consuming units for influencing the temperature of the medium to be controlled, each of the at least two energy-consuming units having a controllable output, anda control unit which adjusts the output of the at least two energy-consuming units according to a previously determined, energy-minimal characteristic diagram which indicates for each system condition the operating point of the absolutely minimal overall energy consumption of the units for controlling the temperature according to a respective desired temperature value,wherein said medium is a coolant in a cooling circulation system of a motor vehicle engine,wherein said energy-consuming units comprise an output-controllable cooling circulation pump and an output-controllable fan which directs a cooling air flow on a cooler of the cooling circulation system, andwherein said energy-consuming units further comprise a shutter which is variable to adjust a driving-power-influencing ram pressure cooling air flow for a cooler of the cooling circulation system.