FIELD: heating.
SUBSTANCE: in a heat exchange control device, when ambient temperature is very low, electronic unit (22) controls the operation of a cooling fluid circulation channel so that the cooling fluid is supplied from motor (11) first to throttle damper (12) and EGR-valve (13) and then to heater (18) of oil for transmission after the start-up of motor (11). This solves the problem of failure in throttle damper (12) and EGR-valve (13), which has been caused by frost formation, at early stage.
EFFECT: improving heat exchange control reliability in a transport vehicle at low ambient temperature.
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