To provide an exhaust emission control device utilizing a reducing agent, keeping the temperature of a liquid reducing agent at a normal freezing temperature or more so as to avoid freezing of the liquid reducing agent by a small-sized compact device without requiring special consumption energy even in operation that the temperature of the liquid reducing agent is lowered such as operation of an engine at a low temperature in a cold district.
This exhaust emission control device utilizing the liquid reducing agent, provided with an engine cooling system introducing high temperature cooling water after cooling the engine to a surge tank and feeding cooling water with air separated into a water pump by the surge tank and an exhaust emission control system supplying the liquid reducing agent stored in a reducing agent tank into a reduction catalyst converter, is designed that the surge tank is arranged in the reducing agent tank so as to directly heat-exchange the liquid reducing agent in the reducing agent tank with the surge tank, and the liquid reducing agent is heated by the heat of the surge tank.
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MIYAKOSHI OSAMU
ONO KAZUTOSHI
FUSO ENGINEERING CORP
Jiro Nagaya