WRB-IP LLP
Device for cooling and heating urea solution for construction machine, and control method therefor
A device for cooling and heating a urea solution to be injected into exhaust gas discharged from an engine in order to reduce nitrogen oxides in the exhaust gas includes an engine including a cooling fan, a coolant pump, and a main cooler; a urea solution tank storing the urea solution and having an embedded heat exchange pipe through which first coolant and second coolant circulates; an additional coolant tank storing the second coolant; a water pump supplying the second coolant from the additional coolant tank to the heat exchange pipe; a valve configured to be opened or closed in order to supply the first coolant and the second coolant to the heat exchange pipe through a supply line, and to move the first coolant and the second coolant, which are discharged from the heat exchange pipe through a discharge line, to rise coolant pump and the additional coolant tank, respectively and a controller for supplying the second coolant to the heat exchange pipe through the supply line when the urea solution temperature exceeds a set temperature and for supplying the first coolant to the heat exchange pipe through the supply line when the urea solution temperature is below or equal to the set temperature, and opening or closing the valve.
Volvo Construction Equipment AB
F F F F F F E F F Y F F F F F F F E F F F F E E
F01P F01N F01N F01N F01N F01N E02F F01N F01N Y02T F01N F01N F01P F01N F01N F01P F01P E02F F01P F01P F01N F01N E02F E02F
inventional additional additional inventional additional inventional inventional additional inventional additional additional additional additional additional additional additional inventional inventional inventional additional additional inventional inventional inventional
Eun-Geon Yu-Hee Sung-Hwan Min-Su Dong-Myoung
Yuk Lee Shin Choi Choi