CN104411932B - 柴油废气净化装置用燃料注入装置 - Google Patents

柴油废气净化装置用燃料注入装置 Download PDF

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CN104411932B
CN104411932B CN201380035255.5A CN201380035255A CN104411932B CN 104411932 B CN104411932 B CN 104411932B CN 201380035255 A CN201380035255 A CN 201380035255A CN 104411932 B CN104411932 B CN 104411932B
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fuel
heat exchanger
gas purification
burning line
purification device
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CN104411932A (zh
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李尚勋
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Doosan Corp
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
    • F01N3/023—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles
    • F01N3/0234—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles using heat exchange means in the exhaust line
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
    • F01N3/023—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles
    • F01N3/025—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles using fuel burner or by adding fuel to exhaust
    • F01N3/0253—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles using fuel burner or by adding fuel to exhaust adding fuel to exhaust gases
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
    • F01N3/023—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles
    • F01N3/025—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles using fuel burner or by adding fuel to exhaust
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N9/00—Electrical control of exhaust gas treating apparatus
    • F01N9/002—Electrical control of exhaust gas treating apparatus of filter regeneration, e.g. detection of clogging
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2240/00—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being
    • F01N2240/02—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being a heat exchanger
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2610/00—Adding substances to exhaust gases
    • F01N2610/03—Adding substances to exhaust gases the substance being hydrocarbons, e.g. engine fuel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2610/00—Adding substances to exhaust gases
    • F01N2610/10—Adding substances to exhaust gases the substance being heated, e.g. by heating tank or supply line of the added substance
    • F01N2610/105—Control thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2610/00—Adding substances to exhaust gases
    • F01N2610/14—Arrangements for the supply of substances, e.g. conduits
    • F01N2610/1453—Sprayers or atomisers; Arrangement thereof in the exhaust apparatus
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2610/00—Adding substances to exhaust gases
    • F01N2610/14—Arrangements for the supply of substances, e.g. conduits
    • F01N2610/1453—Sprayers or atomisers; Arrangement thereof in the exhaust apparatus
    • F01N2610/146—Control thereof, e.g. control of injectors or injection valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2610/00—Adding substances to exhaust gases
    • F01N2610/14—Arrangements for the supply of substances, e.g. conduits
    • F01N2610/1486—Means to prevent the substance from freezing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2900/00—Details of electrical control or of the monitoring of the exhaust gas treating apparatus
    • F01N2900/06—Parameters used for exhaust control or diagnosing
    • F01N2900/18—Parameters used for exhaust control or diagnosing said parameters being related to the system for adding a substance into the exhaust
    • F01N2900/1806—Properties of reducing agent or dosing system
    • F01N2900/1811—Temperature
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    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
    • F01N3/36—Arrangements for supply of additional fuel
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
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    • Y02T10/10—Internal combustion engine [ICE] based vehicles
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Abstract

本发明涉及柴油废气净化装置用燃料注入装置，更详细而言，涉及一种在废气的排出管线中注入燃料，使废气中包含的微粒燃烧而去除的柴油废气净化装置用燃料注入装置。本发明防止在冬季或在寒冷地区要向废气管线注入燃料时燃料冻结，使得DPF再生能够顺利进行。

Description

柴油废气净化装置用燃料注入装置
技术领域
本发明涉及柴油废气净化装置用燃料注入装置，更详细而言，涉及一种在废气的排出管线中注入燃料，使废气中包含的微粒燃烧而去除的柴油废气净化装置用燃料注入装置。
背景技术
一般而言，叉车等工业车辆或工程机械中搭载有柴油发动机。柴油发动机排出废气，在这种废气中含有氮氧化物(NOx)。
氮氧化物成为大气污染的原因，因而被认为是应去除的对象。作为去除氮氧化物的方案，利用柴油废气净化装置(DPF:Diesel Particulate Filter)。
另一方面，在废气中包含微粒。这种微粒(PM:Particulate Material)也可以理解为煤烟、粉尘、烟灰(soot)。
微粒在穿过所述柴油废气净化装置的同时，堵塞微小的缝隙，妨碍流体的流动，进而发生降低柴油废气净化装置的性能的问题。因此，进行去除微粒而使柴油废气净化装置性能再生的过程。
如上所述，可以根据计划的日程或驾驶员的意图而实施对柴油废气净化装置的性能进行再生的过程，把这一系列过程称为DPF再生。
另一方面，作为去除微粒的方案，已知有向排气管线喷射燃料而使得燃烧，借助于燃烧热而使微粒燃烧并去除的方法。
再一方面，工业车辆或工程机械在冬季或寒冷地区也会使用，在这种情况下，发生燃料管线冻结的情形。特别是在发动机室未遮挡的情况下，注入燃料的管线冻结的情形会更频繁地发生。
如上所述，在使燃料注入废气管线的燃料注入装置冻结的情况下，存在无法顺利实施DPF再生的问题。
因此，要求一种使得注入燃料的燃料管线不冻结的对策。
发明内容
技术课题
因此，本发明要实现的技术课题的目的在于提供一种柴油废气净化装置用燃料注入装置，防止在冬季或在寒冷地区要向废气管线注入燃料时燃料冻结，使得DPF再生能够顺利进行。
本发明要实现的技术课题并非限定于以上言及的技术课题，未言及的其它技术课题是本发明所属技术领域的技术人员可以从以下记载而明确理解的。
解决课题的方案
旨在达成所述技术课题的本发明的柴油废气净化装置用燃料注入装置包括：热交换器10，其进行冷却水与燃料间的热交换；第一冷却水管线31，其配置于所述热交换器10的上游，供所述冷却水流入；第二冷却水管线32，其配置于所述热交换器10的下游，供所述冷却水排出；第一燃料管线41，其配置于所述热交换器10的上游，供所述燃料流入；第二燃料管线42，其配置于所述热交换器10的下游，供所述燃料排出；HC喷射模块20，其从所述第二燃料管线42接收所述燃料，向柴油废气净化装置(DPF:Diesel Particulate Filter)的前端的废气管线提供所述燃料；第三燃料管线43，其从所述第一燃料管线41分歧，绕过所述热交换器10，使所述燃料提供给所述HC喷射模块20；及自动温度调节阀单元100，其安装于所述第三燃料管线43从所述第一燃料管线41分歧的位置，在当前温度低于设置的温度的情况下，开放所述热交换器10侧，封闭所述HC喷射模块20侧，在所述当前温度高于所述设置的温度的情况下，开放所述HC喷射模块20侧，封闭所述热交换器10侧。
另外，就本发明的柴油废气净化装置用燃料注入装置而言，所述设置的温度可以为0℃。
其它实施例的具体事项包括于详细说明及附图中。
发明效果
如上构成的本发明的柴油废气净化装置用燃料注入装置可以测量燃料管线的温度，当低于设置的温度时，冷却水与燃料管线连接于热交换器，燃料被加温，把加温的燃料提供给HC喷射模块。从而使得在冬季或寒冷地区，可以向废气管线提供燃料，DPF再生能够顺利进行。
附图说明
图1是用于说明本发明一个实施例的柴油废气净化装置用燃料注入装置的图。
符号说明
10-热交换器，20-HC喷射模块(Hydrocarbon dosing module)，31、32-第一、第二冷却水管线，41、42、43-第一、第二、第三燃料管线，100-自动温度调节阀单元。
具体实施方式
参照附图和后面一同详细说明的实施例，本发明的优点、特征以及达成其的方法将会明确。
在通篇说明书中，相同参照符号指称相同构成要素。
另一方面，后述的术语是考虑在本发明中的功能而设定的术语，其会因生产者的意图或贯例而异，因而其定义应以本说明书通篇内容为基础而做出。
下面参照图1，对本发明一个实施例的柴油废气净化装置用燃料注入装置进行说明。
附图图1是用于说明本发明一个实施例的柴油废气净化装置用燃料注入装置的图。
本发明一个实施例的柴油废气净化装置(DPF:Diesel Particulate Filter)用燃料注入装置使得在冬季或寒冷地区进行冷却水与燃料间的热交换，使得把燃料提供给柴油废气净化装置的前端的废气管线。
本发明一个实施例的柴油废气净化装置用燃料注入装置是把非冻结的流体状态的燃料提供给燃料注入装置，从而借助于热交换器10进行冷却水与燃料间的热交换。
在热交换器10的上游和下游，分别配置有第一、第二冷却水管线31、32。第一冷却水管线31供冷却水流入，第二冷却水管线32供经由热交换器10的冷却水排出。
冷却水是为了防止柴油发动机的过热而循环的流体，因而作为被加温的状态，可以是高于常温的温度。
另外，在热交换器10的上游和下游分别配置有第一、第二燃料管线41、42。第一燃料管线41供燃料流入，第二燃料管线42供经由热交换器10的燃料排出。
所述第二燃料管线42的另一端连接有HC注入装置20。
即，HC注入装置20接收流体状态的燃料，提供给柴油废气净化装置的前端的废气管线。
另一方面，第三燃料管线43从第一燃料管线41分歧，在第三燃料管线43从第一燃料管线41分歧的位置，安装有自动温度调节阀单元100。
所述第三燃料管线43用于绕过热交换器10向HC喷射模块20提供燃料的管线。
所述自动温度调节阀单元100为三通式的阀门，是根据设置的温度而向特定方向开放、另一端封闭的阀门单元。
更详细而言，自动温度调节阀单元100在当前温度低于设置的温度的情况下，开放热交换器10侧，封闭HC喷射模块20侧。另外，在高于设置的温度的情况下，开放HC喷射模块20侧，封闭热交换器10侧。
从而，燃料通过第一燃料管线41流入，在低于设置的温度的情况下，燃料经由热交换器10流入HC喷射模块20。相反，在高于设置的温度的情况下，燃料绕过热交换器10流入HC喷射模块20。
再一方面，在本发明的一个实施例中，在自动温度调节阀单元100中设置的温度可以为0℃。但并非限定于此，在标准大气压状态下，水的冰点为0℃，但在高度较高的地区，气压变化，因而冰点会不同，因而也可以考虑现场的气压状态而不同地设置。
另外，根据风量，会出现温度下降现象，因而可以考虑周围环境等条件，不同地变更设置温度。
又一方面，所述自动温度调节单元100可以分别具备感知温度的温度传感器和借助于电磁阀而工作的阀门。温度传感器可以感知燃料的温度，但在供燃料向HC喷射模块20侧传递的管线中，在暴露于大气的任何位置均可安装。即，当有燃料冻结忧虑时，使得经由热交换器，能够顺利进行燃料的流动与喷射。
如上所述，本发明一个实施例的柴油废气净化装置用燃料注入装置测量燃料管线的温度，在低于设置的温度的情况下，冷却水和燃料管线连接于热交换器，燃料被加温，可以把加温的燃料提供给HC喷射模块。从而，使得在冬季或寒冷地区，可以向废气管线提供燃料，能够防止DPF被堵塞或性能下降，特别是DPF再生能够顺利进行。
以上参照附图，说明了本发明的实施例，但本发明所属技术领域的技术人员可以理解，本发明在不变更其技术思想或必需特征的情况下，可以以其它具体形态实施。
因此，以上记述的实施例在所有方面应理解为并非限定，本发明的范围由后述的权利要求书代表，权利要求书的意义及范围以及从其等价概念导出的所有变更或变形的形态应解释为包含于本发明的范围。
工业上的利用可能性
本发明的柴油废气净化装置用燃料注入装置可以用于把燃料注入废气管线，借助于燃烧热而去除微粒并进行DPF再生。

Claims (2)

1.一种柴油废气净化装置用燃料注入装置，其特征在于，包括：
热交换器(10)，其进行冷却水与燃料间的热交换；
第一冷却水管线(31)，其配置于所述热交换器(10)的上游，供所述冷却水流入；
第二冷却水管线(32)，其配置于所述热交换器(10)的下游，供所述冷却水排出；
第一燃料管线(41)，其配置于所述热交换器(10)的上游，供所述燃料流入；
第二燃料管线(42)，其配置于所述热交换器(10)的下游，供所述燃料排出；
HC喷射模块(20)，其从所述第二燃料管线(42)接收所述燃料，向柴油废气净化装置的前端的废气管线提供所述燃料；
第三燃料管线(43)，其从所述第一燃料管线(41)分歧，绕过所述热交换器(10)，使所述燃料提供给所述HC喷射模块(20)；及
自动温度调节阀单元(100)，其安装于所述第三燃料管线(43)从所述第一燃料管线(41)分歧的位置，在当前温度低于设置的温度的情况下，开放所述热交换器(10)侧，封闭所述HC喷射模块(20)侧，在所述当前温度高于所述设置的温度的情况下，开放所述HC喷射模块(20)侧，封闭所述热交换器(10)侧。
2.根据权利要求1所述的柴油废气净化装置用燃料注入装置，其特征在于，
所述设置的温度为0℃。
CN201380035255.5A 2012-07-02 2013-06-28 柴油废气净化装置用燃料注入装置 Expired - Fee Related CN104411932B (zh)

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