6.4.2 Coolant System with optional Gearbox Oil Cooler
In addition to the standard cooling circuit a Gearbox Oil-Water Heat Exchanger (HEX) is integrated in
the circuit (see Fig. 6.3). The example for an acceptable standard cooling circuit (refer to Fig. 6.2) is
only extended by the gearbox HEX.
Fig. 6.3: Coolant Circuit with optional Gearbox Oil Cooler
The optional available gearbox oil-water HEX, which is directly installed at the rear side of the gearbox,
permits to cool the gearbox oil. An overheating of the gearbox in warm ambient air is minimized with
the link of the gearbox oil to the engine water coolant system via the optional gearbox oil-water HEX.
In correlation to that the gearbox reaches faster its operating temperature.
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