FIELD: fuel.
SUBSTANCE: invention relates to system and method for feeding solution of liquid reducing agent into exhaust gas processing system. Method for liquid reducing agent injection system is implemented with storage of ethanol solution, water, and urea in storage tank. Said solution is fed into electrically heated feeding tube for delivery via supply line and nozzle into exhaust gas flow by means of pump operated in first direction. Return solution is purified via return trunk or via pump supply line operating in second direction opposite to first direction. Transmitting tube therein includes inner tube, outer tube, air gap between inner tube and outer tube, and layer of heating tape arranged on outer surface of inner pipe. Also, system for implementation of this method is disclosed.
EFFECT: when applying invention, fuel saving, preventing precipitation and freezing of reducing agent are achieved.
17 cl, 5 dwg
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