FIELD: engines and pumps.
SUBSTANCE: reducing agent supply system is designed to supply the reducing agent to the engine exhaust gas postprocessing system, heated during cold temperature conditions. The heat carrier medium flows through a heat exchange circuit, providing a flow path from the heat source to a doser, from the doser to the reducing agent storage tank and from the reducing storage tank to the heat source. The control valve controls the flow of the heat carrier medium in the heat exchange circuit so that at least one heat exchange cycle provides a circulation period, in which the temperature of the reducing agent in the doser and storage tank is exceeded and the termination period in which the circulation ceases until the lower limit of the temperature of the reducing agent in the doser.
EFFECT: when using the invention, the system for maintaining the temperature of the reducing agent is improved.
20 cl, 7 dwg
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