公开(公告)号：EP3330505A4

公开(公告)日：2018-06-06

申请号：EP15899705

申请日：2015-07-29

申请人： VOLVO CONSTR EQUIP AB

发明人： CHOI DONG-MYOUNG ,  LEE YU-HEE ,  YUK EUN-GEON ,  SHIN SUNG-HWAN ,  CHOI MIN-SU

IPC分类号： F01N3/20 ,  E02F9/08 ,  F01N3/28 ,  F01N13/08

CPC分类号： E02F9/08 ,  F01N3/20 ,  F01N3/2066 ,  F01N3/28 ,  F01N13/08 ,  F01N2590/08 ,  F01N2610/02 ,  F01N2610/11 ,  F01N2610/14 ,  F01N2610/144 ,  F01N2610/1473 ,  F01N2610/1486 ,  F01N2900/1811

摘要： Disclosed is 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. The present invention provides a device for cooling and heating a urea solution for a construction machine, the device including: 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 the 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.

公开(公告)号：EP2894263A4

公开(公告)日：2016-04-27

申请号：EP12884258

申请日：2012-09-04

申请人： VOLVO CONSTR EQUIP AB

发明人： CHOI DONG-MYOUNG ,  SHIN SUNG-HWAN

IPC分类号： E02F9/00 ,  B08B5/04 ,  B60S3/04

CPC分类号： B08B5/04 ,  E02F9/00