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    DEVICE FOR COOLING AND HEATING UREA SOLUTION FOR CONSTRUCTION MACHINE, AND CONTROL METHOD THEREFOR
    2.
    发明公开
    DEVICE FOR COOLING AND HEATING UREA SOLUTION FOR CONSTRUCTION MACHINE, AND CONTROL METHOD THEREFOR 审中-公开

    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.

    EXHAUST PURIFICATION DEVICE FOR ENGINE
    5.
    发明公开
    EXHAUST PURIFICATION DEVICE FOR ENGINE 审中-公开
    发动机排气净化装置

    公开(公告)号：EP3249185A1

    公开(公告)日：2017-11-29

    申请号：EP14909024.3

    申请日：2014-12-25

    申请人： Volvo Truck Corporation

    发明人： TOMITA, Yasutoshi

    IPC分类号： F01N3/08

    CPC分类号： F01N3/208 ,  F01N3/035 ,  F01N3/2066 ,  F01N9/00 ,  F01N13/0097 ,  F01N2240/02 ,  F01N2560/06 ,  F01N2610/02 ,  F01N2610/10 ,  F01N2610/1473 ,  F01N2610/1493 ,  F01N2900/1811 ,  F02B37/00 ,  Y02T10/24

    摘要： An object is to make it possible to thaw a urea aqueous solution, which is frozen in a reducing agent tank 230 of an exhaust purification device, more rapidly. When a urea aqueous solution in a reducing agent tank 230 is frozen at a time of starting an engine, at least a part of the urea aqueous solution to be supplied to an injection nozzle 200 is flown into a reducing agent circulation flow path 256, a part of which is adjacent to a heat source, and the urea aqueous solution thus heated is returned to the reducing agent tank 230.

    摘要翻译： 目的是能够更迅速地解冻在排气净化装置的还原剂箱230中冷冻的尿素水溶液。 在起动发动机时，当还原剂箱230内的尿素水溶液冻结时，供给到喷射嘴200的尿素水溶液的至少一部分流入还原剂循环流路256， 其一部分与热源邻接，被加热的尿素水溶液返回到还原剂箱230。

    SCR EXHAUST EMISSION CONTROL SYSTEM AND METHOD THEREFORE, FOR FILLING THE UREA REDUCING AGENT AFTER RETURNING TO THE TANK
    10.
    发明公开
    SCR EXHAUST EMISSION CONTROL SYSTEM AND METHOD THEREFORE, FOR FILLING THE UREA REDUCING AGENT AFTER RETURNING TO THE TANK 审中-公开
    SCR排气任务控制系统及其方法填充尿素还原剂返回的TANK

    公开(公告)号：EP3025036A1

    公开(公告)日：2016-06-01

    申请号：EP14747708.7

    申请日：2014-07-07

    申请人： TOYOTA JIDOSHA KABUSHIKI KAISHA

    发明人： NAGAI, Atsushi ,  OTA, Hirohiko

    IPC分类号： F01N3/20

    CPC分类号： F01N3/2066 ,  F01N9/00 ,  F01N2610/144 ,  F01N2610/1473 ,  F01N2610/1486 ,  F01N2610/1493 ,  F01N2900/0422 ,  F01N2900/1404 ,  F01N2900/1602 ,  F01N2900/1626 ,  F01N2900/1811 ,  F01N2900/1821 ,  Y02T10/24 ,  Y02T10/47

    摘要： An exhaust emission control system for an internal combustion engine includes a oxidation catalyst and particulate filter combination, upstream of a reducing agent supply mechanism (200) in front of a SCR-catalyst (41) and ammonia oxidation catalyst (51) combination. The SCR-catalyst is configured to purify exhaust gas by being supplied with the reducing agent urea. The reducing agent supply mechanism has an addition injection valve (230) configured to inject the urea reducing agent to the exhaust passage. The reducing agent supply mechanism is configured to supply the reducing agent to the addition valve and to recover the reducing agent from the addition valve, i.e. return back the urea to the tank. The electronic control unit is configured to execute a filling process of filling the reducing agent into the addition valve (S230) when a temperature of the addition valve is higher than or equal to a boiling point of the reducing agent (S220).

    摘要翻译： 在SCR催化剂（41）和氨氧化催化剂的排气排放控制系统上在内燃机包括氧化催化剂和颗粒过滤器组合，还原剂供给机构（200）的上游侧（51）组合的前面。 SCR催化剂被配置成通过与还原剂的尿素被供应到净化废气。 还原剂供给机构具有被配置成喷射尿素还原剂至排气通路添加喷射阀（230）。 还原剂供给机构被配置为供给还原剂添加阀和恢复来自添加阀，即，还原剂 尿素返回到油箱。 该电子控制单元被配置为执行填充还原剂到添加阀（S230）。当添加阀的温度高于或等于所述还原剂（S220）的沸点的填充过程。