The new unit is of compact design so that it can fit in the usual installation spaces and serves the regular voltage levels HV2 and HV3. The three modules – mechanical compressor unit, electric motor and power electronics – are modularly integrated.
During development, particular emphasis was placed on low weight and high operating efficiency. This ensures economical power management with the limited electrical energy available from the high-voltage storage unit in the vehicle.
The well thought-out design of the machine allows not only classical air conditioning operation at warm outside temperatures but also heat pump operation at low ones. By using a heat pump to heat the driver’s cab, the energy flow from the high-voltage storage unit can be reduced as required, thus increasing the vehicle’s travel range.
A further development focus was the low noise of the compressor, since its sound and vibrations are perceived as disturbing by the driver and occupants.
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