JP2011064119A - Piping unit structure in urea water tank - Google Patents
Piping unit structure in urea water tank Download PDFInfo
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- JP2011064119A JP2011064119A JP2009215096A JP2009215096A JP2011064119A JP 2011064119 A JP2011064119 A JP 2011064119A JP 2009215096 A JP2009215096 A JP 2009215096A JP 2009215096 A JP2009215096 A JP 2009215096A JP 2011064119 A JP2011064119 A JP 2011064119A
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本発明は、自動車用排気ガス浄化装置に用いられる尿素水タンク内の配管ユニット構造に関するものである。 The present invention relates to a piping unit structure in a urea water tank used in an automobile exhaust gas purification device.
エンジンの排気ガス中に含まれる窒素酸化物（ＮＯｘ）を還元浄化する還元剤（尿素水）を還元触媒の排気系上流側に配設した噴射ノズルから添加供給される技術が知られている。尿素水は常温において、液体状態で貯蔵タンクに貯蔵され、エンジンの運転状態に応じて必要量が噴射ノズルから添加供給される。添加供給される尿素水は排気管内においてエンジンの排気ガスとよく混合してアンモニアＮＨ３に分解され、該アンモニアＮＨ３によってＮＯｘ還元触媒にてＮＯｘは窒素と水に分解される。 A technique is known in which a reducing agent (urea water) for reducing and purifying nitrogen oxides (NOx) contained in engine exhaust gas is added and supplied from an injection nozzle disposed upstream of the exhaust system of the reduction catalyst. The urea water is stored in the storage tank in a liquid state at room temperature, and a necessary amount is added and supplied from the injection nozzle according to the operating state of the engine. Urea water is added supplied is decomposed into ammonia (NH 3) is mixed well with the exhaust gas of the engine in the exhaust pipe, NOx in the NOx reduction catalyst by the ammonia NH 3 is decomposed into nitrogen and water.
尿素水は噴射ノズルから確実に添加供給されるためには、常に液体状態を維持すると共に、ＮＯｘ還元触媒にて効率的な窒素と水に分解する還元作用を行うために尿素水濃度を確実にチェックする必要がある。
また、使用する尿素水の物性は、一般的に濃度；３２．５％（重量比）、凍結開始温度；−１１℃、沸点；１００℃である。
従って、尿素水を貯溜するタンクには尿素水の濃度等の品質をチェックする識別センサ、尿素水の凍結を融解、又は凍結防止のそのためエンジン冷却水による加温用パイプ、尿素水のタンク内残留量検知センサ、尿素水を供給装置（図示省略）を介して噴射ノズルに送出する尿素水送出パイプ等が配管されている。
その先行技術文献として、特開２００６−２２６２８２号公報（特許文献１）が提案されている。
In order for urea water to be reliably added and supplied from the injection nozzle, the liquid state is always maintained and the concentration of urea water is ensured in order to perform a reducing action that decomposes efficiently into nitrogen and water by the NOx reduction catalyst. Need to check.
Moreover, the physical properties of urea water to be used are generally concentration: 32.5% (weight ratio), freezing start temperature: −11 ° C., boiling point: 100 ° C.
Therefore, the tank that stores urea water has an identification sensor that checks the quality of the urea water concentration and the like, the pipe for heating by engine cooling water for melting or preventing freezing of urea water, and the urea water remaining in the tank A quantity detection sensor, a urea water delivery pipe for delivering urea water to the injection nozzle via a supply device (not shown), and the like are provided.
As the prior art document, Japanese Patent Laid-Open No. 2006-226282 (Patent Document 1) has been proposed.
特許文献１によると、図５に示すように、尿素水タンク１のタンク本体２の上部に蓋部材３が取付ビス（図示省略）等で固着されている。蓋部材３には以下のような各配管類が装着されている。
タンク本体２内に貯溜されている尿素水が凍結した場合の融解のために、又は、−１１℃以下になったら凍結しないようにするために、エンジンの冷却水（熱湯）の一部をタンク本体２内に循環させる加温用配管である加温パイプ４、（４ａ、４ｂ、４ｃ、４ｄ，４ｅ，４ｆ、４ｇ）が設けられており、加温パイプ４ａ、加温パイプ４ｂ、加温パイプ４ｃ、加温パイプ４ｄ，加温パイプ４ｅ，加温パイプ４ｆ、加温パイプ４ｇの順に流れるようになっている。
が設けられている。
尿素水の貯溜量を検知するレベルセンサ用配管であるレベルセンサ５、尿素水の品質（濃度）をチェックする識別センサ用配管である識別センサ６、タンク本体２内の尿素水を噴射ノズル（図示省略）に送出する送出用配管である尿素水送出パイプ９、タンク内のエアーを給排気するエアー抜き用配管であるエアーパイプ１０が装着されている。
また、タンク本体２の底部位置には尿素水の加温を促進する放熱部材である放熱箱７が配設されており、これら加温パイプ４、レベルセンサ５、識別センサ６、放熱箱７、尿素水送出パイプ９、エアーパイプ１０で配管ユニット１１を構成している。
According to Patent Document 1, as shown in FIG. 5, the lid member 3 is fixed to the upper portion of the tank body 2 of the urea water tank 1 with a mounting screw (not shown). The following piping is attached to the lid member 3.
In order to melt when urea water stored in the tank body 2 freezes, or to prevent freezing when it falls below -11 ° C., a part of engine cooling water (hot water) is tanked. A heating pipe 4 (4a, 4b, 4c, 4d, 4e, 4f, 4g), which is a heating pipe circulated in the main body 2, is provided, and the heating pipe 4a, the heating pipe 4b, and the heating are provided. The
Is provided.
Level sensor 5 which is a pipe for level sensor for detecting the amount of stored urea water, identification sensor 6 which is a pipe for identification sensor for checking the quality (concentration) of urea water, and an injection nozzle for urea water in tank body 2 (illustrated) A urea water delivery pipe 9 which is a delivery pipe for delivery to (not shown) and an air pipe 10 which is an air vent pipe for supplying and exhausting air in the tank are mounted.
Further, a heat radiating box 7 which is a heat radiating member for promoting the heating of the urea water is disposed at the bottom portion of the tank body 2, and these heating pipe 4, level sensor 5, identification sensor 6, heat radiating box 7, The urea water delivery pipe 9 and the air pipe 10 constitute a piping unit 11.
また、尿素水タンク１は車両への搭載において、タンク配置のスペース、尿素水の補給便利性等から、車両前後方向へ燃料タンクに並べて搭載する場合が多く、図５に外観を示すように、車両前後方向の幅が小さく、車幅方向に長い形状となっている。
従って、蓋部材３に取付けられた各配管類は車幅方向に配列されている。
ところが、加温パイプ４、レベルセンサ５、識別センサ６等に、片持ち支持された放熱箱の固有振動モードと車両の走行振動により尿素水タンク１が揺動され、蓋部材３から加振力が伝わり、共振する時に各配管の蓋部材３への取付部近傍に高い応力が発生する。
特に、加温パイプ４ｂ、から加温パイプ４ｃにＵ字状に曲げた連続部と蓋部材３との結合を行う支持ブラケット８の蓋部材３側の取付部近傍Ｙ部（図６）には高い応力が発生する。
レベルセンサ５は、ステンレス製の中空管で内部に金属棒である電極（中心電極）を要し，その外管（外電極）の間では、高さに比例した静電容量が発生する。この原理を利用して尿素水タンク内で、尿素水に浸っている部分と浸っていない部分の静電容量の変化を計測し、各レベルでのスイッチのオン・オフの組み合わせで、運転席の表示灯（LED）を点灯させ残存液量を表示する構成になっている。
更に、識別センサ６においても、ステンレス製の中空管で先端部に尿素水の濃度を検出するセンサが中空管の内部に装着されている。
そのため、配管ユニット１１全体の剛性は、レベルセンサ５及び、識別センサ６夫々の太い外径によって維持される構成になっている。
その結果、配管組立部材１１全体の重量が重くなり、且つレベルセンサ５及び、識別センサ６はステンレス材を使用しているためコストが高くなるという問題があった。
In addition, the urea water tank 1 is often mounted side by side on the fuel tank in the vehicle front-rear direction due to the space of the tank arrangement, the convenience of supplying urea water, etc., as shown in FIG. The vehicle has a small width in the front-rear direction and a long shape in the vehicle width direction.
Therefore, each piping attached to the lid member 3 is arranged in the vehicle width direction.
However, the urea water tank 1 is swung by the natural vibration mode of the radiator box that is cantilevered by the heating pipe 4, the level sensor 5, the identification sensor 6, and the like, and the running vibration of the vehicle. When a resonance occurs, high stress is generated in the vicinity of the attachment portion of each pipe to the lid member 3.
In particular, the Y portion (FIG. 6) in the vicinity of the attachment portion on the lid member 3 side of the support bracket 8 that joins the lid member 3 with the continuous portion bent in a U shape from the heating pipe 4b to the
The level sensor 5 is a stainless steel hollow tube and requires an electrode (center electrode) that is a metal rod inside, and a capacitance proportional to the height is generated between the outer tube (outer electrode). Using this principle, the change in the capacitance of the urea water tank in the urea water tank and the non-soaked part is measured. It is configured to display the remaining liquid level by turning on the indicator lamp (LED).
Further, in the identification sensor 6, a sensor that detects the concentration of urea water at the tip of the hollow tube made of stainless steel is mounted inside the hollow tube.
Therefore, the rigidity of the entire piping unit 11 is maintained by the thick outer diameters of the level sensor 5 and the identification sensor 6.
As a result, the weight of the entire pipe assembly member 11 is increased, and the level sensor 5 and the identification sensor 6 are made of stainless steel, which increases costs.
本発明はこのような問題点を解決するためになされたもので尿素水タンクの蓋部材に取付けられる各配管類の取付部に発生する応力を低減すると共に、コスト低減と重量軽減を図った尿素水タンク内の配管ユニット構造を提供することを目的とする。 The present invention has been made to solve such problems, and reduces the stress generated in the attachment portion of each piping attached to the lid member of the urea water tank, and reduces the cost and weight. It aims at providing the piping unit structure in a water tank.
本発明はかかる目的を達成するもので、尿素水貯溜用タンク本体の上面に着脱自在に取付けられるとともに配管部材が貫通する貫通孔が穿設された略長方形状の蓋部材と、
該蓋部材の貫通孔に嵌着されて前記タンク本体内を下面に向かって延び、前記タンク本体内に貯溜される尿素水を加温する流体が流れる加温用配管と、前記蓋部材に取付けられて前記タンク本体内を下面に向かって延び、前記タンク本体内に貯溜される尿素水を前記タンク外に尿素水送出する尿素水送出用配管と、前記蓋部材に取付けられて前記タンク本体内を下面に向かって延び、前記タンク本体内に貯溜される尿素水の濃度を検出する識別センサ用配管と、前記蓋部材に取付けられて前記タンク本体内を下面に向かって延び、前記タンク本体内に貯溜される尿素水の残留量を検知するレベルセンサ用配管と、前記蓋部材に取付けられて先端部が前記タンク本体内に開口して、前記タンク本体内空気の入出通路となるエアー抜き用配管と、前記加温用配管の前記タンク本体の底部に位置する部分で、前記尿素水送出用配管の吸引口と、前記識別センサ用配管の下部を囲繞して前記タンク本体の底部から浮いた状態で配置され前記蓋部材と同方向に長い箱型の放熱部材と、両端が前記蓋部材及び前記放熱部材の夫々に固着され、前記蓋部材の長手方向と略直角方向に平面部が配設された板状の補強部材と、を備えたことを特徴とする尿素水タンク内の配管ユニット構造。
The present invention achieves such an object, a substantially rectangular lid member that is detachably attached to the upper surface of the urea water storage tank body and has a through-hole through which a piping member passes,
A heating pipe that is fitted into the through-hole of the lid member and extends toward the lower surface in the tank body and through which a fluid for heating urea water stored in the tank body flows, and is attached to the lid member And extending to the lower surface of the tank body, the urea water stored in the tank body is sent to the outside of the tank, and the urea water delivery pipe is attached to the lid member. And a piping for an identification sensor for detecting the concentration of urea water stored in the tank body, and attached to the lid member and extending in the tank body toward the bottom surface. A level sensor pipe for detecting the remaining amount of urea water stored in the tank, and an air vent attached to the lid member and having a leading end opened in the tank body to serve as an inlet / outlet passage for air in the tank body Piping, The portion of the heating pipe located at the bottom of the tank body is arranged in a state of floating from the bottom of the tank body surrounding the suction port of the urea water delivery pipe and the lower part of the identification sensor pipe A box-shaped heat radiating member that is long in the same direction as the lid member, and a plate in which both ends are fixed to the lid member and the heat radiating member, and a flat portion is disposed in a direction substantially perpendicular to the longitudinal direction of the lid member. A piping unit structure in a urea water tank, comprising: a reinforcing member having a shape.
このような構成にすることにより、車体からの振動による放熱箱７の揺動に対し、放熱部材の長手方向と直角の方向が最も大きい曲げ作用力を受けるので、該方向への曲げ剛性が大きくなるように補強部材の平面部を放熱部材の長手方向と略直角の方向に配設することにより、各配管部材の蓋部材への取付部（嵌着部）に発生する応力を低減できる。
従って、従来のセンサ部材で剛性を維持していたものを補強材にて剛性を維持するようにしたので、センサの太さ（剛性）、重量の軽減及び材質変更等が可能となり、重量及びコストの軽減の選択が容易となる。
更に、補強部材からの放熱により尿素水の凍結融解、又は凍結防止が図られる。
By adopting such a configuration, the bending force in the direction perpendicular to the longitudinal direction of the heat radiating member is applied to the swing of the heat radiating box 7 due to the vibration from the vehicle body, so that the bending rigidity in the direction is large. By arranging the flat portion of the reinforcing member in a direction substantially perpendicular to the longitudinal direction of the heat radiating member, the stress generated in the attachment portion (fitting portion) of each piping member to the lid member can be reduced.
Accordingly, since the rigidity of the conventional sensor member is maintained by the reinforcing material, the thickness (rigidity) of the sensor, the weight can be reduced, and the material can be changed. The selection of mitigation becomes easier.
Furthermore, freeze / thaw or prevention of freezing of urea water is achieved by heat radiation from the reinforcing member.
また、本願発明において好ましくは、前記補強部材は前記平面部と略直角方向の幅が、前記平面部の幅より小さくするとよい。 In the present invention, preferably, the reinforcing member has a width in a direction substantially perpendicular to the plane portion smaller than the width of the plane portion.
このような構成にすることにより、補強部材は平面部と略直角の方向の幅を平面部の幅より小さくしたので、放熱部材の長手方向が受ける車体からの振動による曲げ作用力を軽減することができ、各配管部材の蓋部材への取付部（嵌着部）に発生する応力を低減することができる。 By adopting such a configuration, the reinforcing member has a width in a direction substantially perpendicular to the plane portion smaller than the width of the plane portion, so that the bending force caused by vibration from the vehicle body received by the longitudinal direction of the heat dissipation member can be reduced. It is possible to reduce the stress generated in the attachment portion (fitting portion) of each piping member to the lid member.
また、本願発明において好ましくは、前記補強部材の前記平面部には前記蓋部材の長手方向に沿って貫通する貫通孔が上下方向に複数穿設されるとよい。 In the present invention, it is preferable that a plurality of through-holes penetrating along the longitudinal direction of the lid member are formed in the flat portion of the reinforcing member in the vertical direction.
このような構成にすることにより、揺動による補強部材の平面部に対する曲げモーメントの軽減を図ると共に重量軽減、尿素水が貫通孔を通過することによる液体の攪拌、攪拌による尿素水の薬剤の濃度均一化が図れる。 By adopting such a configuration, the bending moment with respect to the flat portion of the reinforcing member by swinging is reduced, the weight is reduced, the liquid is stirred by passing the urea water through the through hole, and the concentration of the chemical in the urea water by the stirring Uniformity can be achieved.
また、本願発明において好ましくは、前記補強部材の下部と、前記放熱部材との結合構造において、前記放熱部材の前記補強部材と対向した面に一端が溶着され、他端には前記補強部材下端部の横断面形状外周と略同形状の筒状孔を備えた連結部材を介装し、前記補強部材の下端部を前記筒状孔に嵌入して溶着するとよい。 In the present invention, preferably, in a coupling structure between the lower portion of the reinforcing member and the heat radiating member, one end is welded to a surface of the heat radiating member facing the reinforcing member, and the other end is the lower end of the reinforcing member. It is good to interpose the connection member provided with the cylindrical hole of the substantially same shape as the cross-sectional outer periphery of this, and to fit the lower end part of the said reinforcement member in the said cylindrical hole, and to weld.
このような構成にすることにより、補強部材の下端部と連結部材との結合構造を嵌入して、溶着した構造としたので、蓋部材と放熱部材間に配管される各配管部材の長さによる組立精度誤差を吸収して組立てることが可能となると共に、放熱部材と連結部材及び、連結部材と補強部材間を溶着結合としたので、放熱部材から補強部材への熱伝導率が高く、補強部材を放熱板としての効果が期待できる。 By adopting such a configuration, since the joining structure of the lower end portion of the reinforcing member and the connecting member is fitted and welded, it depends on the length of each piping member that is piped between the lid member and the heat radiating member. It is possible to assemble by absorbing the assembly accuracy error, and since the heat dissipation member and the connecting member and between the connecting member and the reinforcing member are welded, the heat conductivity from the heat dissipating member to the reinforcing member is high, and the reinforcing member The effect as a heat sink can be expected.
また、本願発明において好ましくは、前記レベルセンサは外筒がステンレス製の中空管で形成され、該中空管の中空部にはリードスィッチを前記タンク本体の上下方向に複数配設し、外周部にフロート部材を備えた環状の磁石を外嵌させた構造とするとよい。 Preferably, in the present invention, the level sensor has an outer cylinder formed of a stainless steel hollow tube, and a plurality of reed switches are disposed in the hollow portion of the hollow tube in the vertical direction of the tank body, It is good to set it as the structure which carried out the external fitting of the annular magnet provided with the float member in the part.
このような構成にすることにより、レベルセンサは外筒を細くすることが可能となり、レベルセンサの重量軽減及び、高価なステンレスパイプのサイズダウンによるコスト低減が可能となる。 By adopting such a configuration, the level sensor can make the outer cylinder thin, and the weight of the level sensor can be reduced and the cost can be reduced by reducing the size of the expensive stainless steel pipe.
本発明によれば、車両走行時の車体の振動に対し、放熱部材の長手方向と直角の方向が大きく振動するため、該方向への曲げ剛性が大きくなるように補強部材の平面部を放熱部材の長手方向と略直角の方向に配設したので、各配管部材の蓋部材への取付部（嵌着部）に発生する応力を低減できる。
更に、補強部材の配設により、蓋部材と放熱部材との組付け剛性が向上したので、レベルセンサの外筒の外径を小さくすることができ重量及びコスト軽減が可能となった。
According to the present invention, since the direction perpendicular to the longitudinal direction of the heat radiating member greatly vibrates with respect to the vibration of the vehicle body during traveling of the vehicle, the flat portion of the reinforcing member is radiated so as to increase the bending rigidity in that direction. Since it has been arranged in a direction substantially perpendicular to the longitudinal direction, it is possible to reduce the stress generated in the attachment portion (fitting portion) of each piping member to the lid member.
Furthermore, since the assembling rigidity of the lid member and the heat radiating member has been improved by the arrangement of the reinforcing member, the outer diameter of the outer cylinder of the level sensor can be reduced, and the weight and cost can be reduced.
また、前記補強部材の前記平面部には前記蓋部材の長手方向に沿って貫通する貫通孔が上下方向に複数穿設されたので、車両走行時の尿素水の流動による補強部材の平面部への衝突に対する曲げモーメントの軽減を図ると共に、液体が貫通孔を通過することによる液体の攪拌、攪拌による液体に混合されている薬剤の濃度均一化が図れる。
更に、補強部材から熱を放熱することにより液体の凍結防止及び、凍結の融解をする効果を有することができる。
In addition, since a plurality of through holes penetrating along the longitudinal direction of the lid member are formed in the flat portion of the reinforcing member in the vertical direction, the flat portion of the reinforcing member due to the flow of urea water during vehicle travel is provided. The bending moment with respect to the collision of the liquid can be reduced, the liquid can be agitated by passing through the through-hole, and the concentration of the medicine mixed in the liquid by the agitation can be made uniform.
Furthermore, by releasing heat from the reinforcing member, the liquid can be prevented from freezing and freezing and thawing can be achieved.
以下、本発明を図に示した実施例を用いて詳細に説明する。
但し、この実施例に記載されている構成部品の寸法、材質、形状、その相対配置などは特に特定的な記載がない限り、この発明の範囲をそれのみに限定する趣旨ではなく、単なる説明例にすぎない。
（第１実施形態）
Hereinafter, the present invention will be described in detail with reference to the embodiments shown in the drawings.
However, the dimensions, materials, shapes, relative arrangements, and the like of the component parts described in this example are not intended to limit the scope of the present invention only to specific examples unless otherwise specified. Only.
(First embodiment)
図面の符号は従来技術と変更のない部品については、変更された部品とを明確にするため、従来技術の部品の符号と同一にした。
図１は本発明に係る尿素水タンク２０全体の斜視図を示す。また、図２は本発明の配管ユニット２８の側面図を示す。
The reference numerals of the drawings are the same as those of the prior art parts in order to clarify the changed parts of the conventional art and the parts which are not changed.
FIG. 1 is a perspective view of the entire urea water tank 20 according to the present invention. FIG. 2 shows a side view of the piping unit 28 of the present invention.
尿素水タンク２０の外観形状は水平断面が車幅方向に長く、車両前後方向に短い長方形に形成されている。尿素水タンク２０の上部には尿素水タンク２０の前記水平断面形状に沿って車幅方向に長く、車両前後方向に短い長方形状に形成された蓋部材３に各配管類が取付けられた配管ユニット２８が配設されている。
尚、本実施形態では蓋部材３を長方形としたが、両端部が半円形状の長円でもよい。
The external shape of the urea water tank 20 is formed in a rectangular shape having a long horizontal section in the vehicle width direction and short in the vehicle front-rear direction. A piping unit in which each piping is attached to a lid member 3 formed in a rectangular shape that is long in the vehicle width direction along the horizontal cross-sectional shape of the urea water tank 20 and short in the vehicle front-rear direction. 28 is disposed.
In the present embodiment, the lid member 3 is rectangular, but may be an ellipse having a semicircular shape at both ends.
蓋部材３にはタンク本体２内に貯溜されている尿素水を温度管理する加温用配管である加温パイプ４が配索されている。加温パイプ４は、加温パイプ４ａ、加温パイプ４ｂ、加温パイプ４ｃ、加温パイプ４ｄ、加温パイプ４ｅ、加温パイプ４ｆ、及び加温パイプ４ｇから構成されている。夫々の加温パイプは一体で且つ連通したパイプで形成されている。加温パイプの一方は蓋部材３の長手方向の一端部に取付けられており、蓋部材３から下方へ垂下した加温パイプ４ａを有し、タンク本体２の底部近傍で蓋部材３の長方形状の他端部側へタンク本体２の長手方向壁面に沿って水平に屈曲した加温パイプ４ｂを有し、加温パイプ４ｂの水平部は、更に蓋部材３の長手方向と略同じ長さまで延伸して、上方へ屈曲する。屈曲した加温パイプ４ｃは蓋部材３の長手方向他端部近傍まで延伸し、蓋部材３近傍にて蓋部材３の長手方向に対し略直角の面内において下方へ半円形状に屈曲した半円形状の加温パイプ４ｄ部を有し、半円形状の加温パイプ４ｄ部からタンク本体２の長手方向壁面に沿って再度下方へ屈曲しタンク本体２の底部近傍まで垂下した加温パイプ４ｅを有する。更に、加温パイプ４ｅはタンク本体２の底部近傍で、蓋部材３の一端部側へタンク本体２の長手方向壁面に沿って水平に屈曲した水平部加温パイプ４ｆを有する。加温パイプ４ｆは更に蓋部材３の長手方向と略同じ長さ（水平部の加温パイプ４ｂと略同じ長さ）まで延伸して、上方へ屈曲する。屈曲した加温パイプは加温パイプ４ａと略平行に上方へ延伸した加温パイプ４ｇを有して、蓋部材３の一端部には加温パイプ４ａの端部と加温パイプ４ｇ端部が間隔を有して突出し且つ、取付けられている。
The lid member 3 is provided with a heating pipe 4 which is a piping for heating for controlling the temperature of the urea water stored in the tank body 2. The warming pipe 4 includes a warming pipe 4a, a warming pipe 4b, a warming
加温パイプ４はエンジン（図示省略）の冷却水（熱湯）を加温パイプ４に流して、その熱湯の熱伝達により、加温パイプ４の金属部が温められ、その放熱により、外気温が下がり尿素水が凍結した場合には融解し、又は凍結を防止するために加温する。 The heating pipe 4 causes the cooling water (hot water) of the engine (not shown) to flow through the heating pipe 4, the heat transfer of the hot water heats the metal part of the heating pipe 4, and the heat dissipation causes the outside air temperature to be reduced. When the falling urea water freezes, it is thawed or heated to prevent freezing.
尿素水送出用配管である尿素水送出パイプ９は蓋部材３の一端部側を貫通して装着され、下端がタンク本体２の底部近傍まで垂下されている。送水パイプ９はタンク本体２内の尿素水を噴射装置（図示省略）に送水するパイプであり、送水された尿素水は噴射装置を介して排気管内に配設された噴射ノズル（図示省略）に圧送される。
エアー抜き用配管であるエアー抜きパイプ１０はタンク本体２に尿素水を補給する際に、タンク本体２内の空気を排出すると共に、タンク本体２内の尿素水を尿素水送出パイプ９によって噴射装置に送水する際のタンク本体２内の気圧調整用パイプである。
A urea water delivery pipe 9, which is a urea water delivery pipe, is attached so as to penetrate one end of the lid member 3, and the lower end is suspended to the vicinity of the bottom of the tank body 2. The water supply pipe 9 is a pipe for supplying urea water in the tank body 2 to an injection device (not shown). The supplied urea water is supplied to an injection nozzle (not shown) disposed in the exhaust pipe via the injection device. Pumped.
The air vent pipe 10, which is an air vent pipe, discharges the air in the tank body 2 when the tank body 2 is supplied with urea water, and the urea water in the tank body 2 is injected by the urea water delivery pipe 9. This is a pipe for adjusting the atmospheric pressure in the tank body 2 when water is fed to the tank.
タンク本体２内の底面部近傍には加温パイプ４ｂと、加温パイプ４ｆ、識別センサ２４の下端部及び、尿素水送出パイプ９の吸引口を囲繞した放熱部材である放熱箱２５が配設されている。放熱箱２５は直方体（六面体）に形成され、長手方向がタンク本体２の長手方向と同じ方向（蓋部材３の長手方向と同じ）に配設されている。放熱箱２５の底面はタンク本体２内の底面より若干の間隔を有している。放熱箱２５内は加温パイプ４ｂと、加温パイプ４ｆが放熱箱２５の対向する長手方向壁面の下部に夫々接合されている。
接合部はエンジンの冷却水の熱が加温パイプから放熱箱２５に伝導され易いようにロー付溶接してある。
また、放熱箱２５を直方体（六面体）に形成して識別センサ２４の下端部及び、尿素水送出パイプ９の吸引口を囲繞することにより、放熱箱２５内の凍結した尿素水を他の部分より早く融解させて、尿素水の早期送水を可能とするためである。
尚、本実施形態では放熱箱２５を直方体としたが、両端の水平断面が略半円状になった長円形状の容積体であっても同じ効果を有する。
In the vicinity of the bottom surface in the tank body 2, a heating pipe 4b, a heating pipe 4f, a lower end portion of the identification sensor 24, and a heat radiating box 25 which is a heat radiating member surrounding the suction port of the urea water delivery pipe 9 are disposed. Has been. The heat radiating box 25 is formed in a rectangular parallelepiped (hexahedron), and the longitudinal direction is arranged in the same direction as the longitudinal direction of the tank body 2 (the same as the longitudinal direction of the lid member 3). The bottom surface of the heat dissipation box 25 is slightly spaced from the bottom surface in the tank body 2. Inside the heat radiating box 25, a heating pipe 4b and a heating pipe 4f are joined to the lower portions of the opposing longitudinal wall surfaces of the heat radiating box 25, respectively.
The joint is welded with brazing so that the heat of the cooling water of the engine is easily conducted from the heating pipe to the heat radiating box 25.
Further, by forming the heat radiating box 25 in a rectangular parallelepiped (hexahedron) and surrounding the lower end portion of the identification sensor 24 and the suction port of the urea water delivery pipe 9, the frozen urea water in the heat radiating box 25 is removed from other parts. This is because it can be melted quickly to enable early water supply of urea water.
In the present embodiment, the heat radiating box 25 is a rectangular parallelepiped, but the same effect can be obtained even with an elliptical volume body in which the horizontal cross sections at both ends are substantially semicircular.
識別センサ用配管である識別センサ２４は外筒が樹脂製であり上部が蓋部材３の他端部側に固着され、下端部は放熱箱２５の上壁面（蓋部材３と対向した面）を貫通して、放熱箱２５の中に位置している。
また、放熱箱２５の中に識別センサ２４の下端部を配設することにより、タンク本体２内の他の部分よりいち早く融解した放熱箱２５内の尿素水の品質をチェックするためである。
尿素水が窒素酸化物ＮＯｘをＮＯｘ還元触媒にて効率的に且つ、確実に窒素と水に分解する還元作用を行わせるためである。
The identification sensor 24, which is a pipe for the identification sensor, has an outer cylinder made of resin, an upper portion fixed to the other end portion of the lid member 3, and a lower end portion of the upper surface of the heat radiating box 25 (a surface facing the lid member 3). It penetrates and is located in the heat dissipation box 25.
In addition, by disposing the lower end portion of the identification sensor 24 in the heat radiating box 25, the quality of the urea water in the heat radiating box 25 melted earlier than the other parts in the tank body 2 is checked.
This is because the urea water performs a reducing action for efficiently and reliably decomposing nitrogen oxides NOx into nitrogen and water by the NOx reduction catalyst.
レベルセンサ用配管であるレベルセンサ２３は上下方向中間部の外郭がステンレス（ＳＵＳ）製で上端部は樹脂製のアタッチメント（図示省略）を介して蓋部材３の一端部側に固着され、下端部は放熱箱２５の上壁面（蓋部材３と対向した面）に樹脂製のアタッチメント（図示省略）を介して固着されている。外径寸法はφｄ×０．３（従来はφｄ）としてある。
レベルセンサ２３は外筒がステンレス製の中空管で外径がφｄ×０．３である。中空管の中空部にリードスイッチ（図示省略）を上下方向に複数配列してある。レベルセンサ２３の外筒部の外周には尿素水の水位によって上下するフロート２３１が遊嵌している。フロート２３１内周部には磁力を有した環状の磁石２３２が内装されている。尿素水の水位によってフロート２３１と共に磁石２３２が上下方向に移動し、磁石２３２と対峙した位置の中空部のリードスイッチが磁力によってスイッチ・オンする。リードスイッチのスイッチ・オンによって運転席に尿素水の残留量を表示する構成にした。
このように構成することによりレベルセンサ２３の外径寸法をφｄ⇒φｄ×０．３にすることが可能となり、重量及びコスト低減が可能となった。
The level sensor 23, which is a level sensor pipe, has an upper and lower intermediate part made of stainless steel (SUS) and an upper end fixed to one end of the lid member 3 via a resin attachment (not shown). Is fixed to the upper wall surface of the heat radiating box 25 (the surface facing the lid member 3) via a resin attachment (not shown). The outer diameter is φd × 0.3 (conventional φd).
The level sensor 23 is a hollow tube made of stainless steel and has an outer diameter of φd × 0.3. A plurality of reed switches (not shown) are arranged in the vertical direction in the hollow portion of the hollow tube. A float 231 that rises and falls depending on the level of urea water is loosely fitted on the outer periphery of the outer cylinder portion of the level sensor 23. An annular magnet 232 having a magnetic force is provided in the inner periphery of the float 231. The magnet 232 moves up and down together with the float 231 due to the water level of the urea water, and the reed switch in the hollow portion at the position facing the magnet 232 is switched on by magnetic force. The system is configured to display the remaining amount of urea water in the driver's seat by turning on the reed switch.
With this configuration, the outer diameter of the level sensor 23 can be changed from φd to φd × 0.3, and the weight and cost can be reduced.
補強部材は詳細形状を図３にて示す。補強部材は水平断面が長方形状で平板状の補強ステー２１と、補強ステー２１の上端部側に配設され蓋部材と固着される取付ブラケット２８と、補強ステー２１の下端部側に配設され放熱箱２５と固着する連結ブラケット２２とを備えている。補強ステー２１の平板状の平面部は蓋部材３の長手方向（車幅方向）と略直角方向に配置される。補強ステー２１の上端部は断面がコ字状で、コ字状の開口部が補強ステー２１の平面部と直角の面である両側面を挟持するように取付ブラケット２８が固着されている。補強ステー２１の上端部は取付ブラケット２８のコ字状の底辺部を蓋部材３の下面に固着されている。
一方、補強ステー２１の下端部に配設される連結ブラケット２２は補強ステー２１の下端部が嵌入する筒状凹部を有し、補強ステー２１の下端部を連結ブラケット２２の筒状凹部に嵌入して、連結ブラケット２２を介して放熱箱２５に溶着（ロー付溶接）されている。連結ブラケット２２と放熱箱２５との溶着位置は放熱箱２５の長手方向中間部である。
また、本実施例の場合、平面部の幅は放熱箱２５の短辺方向幅と略等しくしてある。断面形状の大きさは状況により変化させることは容易である。
補強ステー２１の下端部と連結ブラケット２２の筒状凹部とは溶着（ロー付溶接）されている。この際、蓋部材３に取付けられている他の各配管類（加温パイプ、識別センサ、レベルセンサ等）の放熱箱２５までの寸法精度の誤差を吸収するように、筒状凹部と補強ステー２１の下端部との嵌合量を調整して、筒状凹部と補強ステー２１の下端部とを溶着する。
また、補強ステー２１は前記平面部に対して厚みの比率が小さく、基本の水平断面は中空の長方形で且つ、閉断面形状に形成されている。
更に、補強ステー２１の平面部には平面に対して略直角方向（蓋部材３の長手方向）に貫通した貫通孔がタンク本体３の上下方向に複数穿設されている。
The detailed shape of the reinforcing member is shown in FIG. The reinforcing member has a rectangular horizontal section and a flat plate-like reinforcing stay 21, a mounting bracket 28 which is disposed on the upper end side of the reinforcing stay 21 and is fixed to the lid member, and is disposed on the lower end side of the reinforcing stay 21. A radiating box 25 and a connecting bracket 22 are provided. The flat planar portion of the reinforcing stay 21 is arranged in a direction substantially perpendicular to the longitudinal direction (vehicle width direction) of the lid member 3. The upper end portion of the reinforcing stay 21 has a U-shaped cross section, and the mounting bracket 28 is fixed so that the U-shaped opening portion sandwiches both side surfaces that are surfaces perpendicular to the flat portion of the reinforcing stay 21. The upper end portion of the reinforcing stay 21 is fixed to the lower surface of the lid member 3 with the U-shaped bottom portion of the mounting bracket 28.
On the other hand, the connecting bracket 22 disposed at the lower end of the reinforcing stay 21 has a cylindrical recess into which the lower end of the reinforcing stay 21 is fitted, and the lower end of the reinforcing stay 21 is inserted into the cylindrical recess of the connecting bracket 22. Then, it is welded (welded with brazing) to the heat radiating box 25 via the connecting bracket 22. The welding position of the connection bracket 22 and the heat radiating box 25 is the middle portion in the longitudinal direction of the heat radiating box 25.
In the present embodiment, the width of the flat portion is substantially equal to the width of the heat radiation box 25 in the short side direction. The size of the cross-sectional shape can be easily changed depending on the situation.
The lower end of the reinforcing stay 21 and the cylindrical recess of the connecting bracket 22 are welded (welded with brazing). At this time, the cylindrical concave portion and the reinforcing stay are absorbed so as to absorb the error in dimensional accuracy of the other pipes (heating pipe, identification sensor, level sensor, etc.) attached to the lid member 3 up to the radiation box 25. The fitting amount with the lower end of 21 is adjusted, and the cylindrical recess and the lower end of the reinforcing stay 21 are welded.
The reinforcement stay 21 has a small thickness ratio with respect to the flat portion, and the basic horizontal cross section is a hollow rectangle and is formed in a closed cross section.
Further, a plurality of through holes penetrating in the plane portion of the reinforcement stay 21 in a direction substantially perpendicular to the plane (longitudinal direction of the lid member 3) are formed in the vertical direction of the tank body 3.
本実施形態では、放熱箱２５と加温パイプ４ｂ、４ｆの接合、放熱箱２５と連結ブラケット２２の接合、及び連結ブラケット２２と補強ステー２１との接合をロー付溶接としたので、夫々の溶接部（接合部）にロー材が流れ込み隙間を無くしている。
従って、接合部の面積が大きくなり、接合部の熱伝導が良好となるため、補助ステーにもエンジンの冷却水の熱が伝わり、凍結した尿素水の融解又は凍結防止が効率よく行える。（ロー付溶接の場合、接合部に接合部の前処理としてフラックスを塗布するが、塗布した部分にはロー材が浸透し易い利点がある）
In the present embodiment, the joining of the heat radiating box 25 and the heating pipes 4b and 4f, the joining of the heat radiating box 25 and the connecting bracket 22, and the joining of the connecting bracket 22 and the reinforcing stay 21 are made by brazing welding. The brazing material flows into the part (joint part) and the gap is eliminated.
Accordingly, the area of the joint is increased, and the heat conduction of the joint is improved, so that the heat of the engine cooling water is also transmitted to the auxiliary stay, so that the frozen urea water can be efficiently melted or prevented from freezing. (In the case of welding with brazing, flux is applied to the joint as a pretreatment of the joint, but the applied part has the advantage that the brazing material is easy to penetrate)
補強ステー２１の平面部はタンク本体２内の尿素水の流動により最も大きい曲げモーメントを受け易い方向（放熱箱２５の長手方向に対して略直角方向）にそって配置されているので、該方向に対する剛性が高く、且つ、基本の水平断面が閉断面構造となっているので、捩れに対する剛性も強化されている。
また、補強ステー２１の平面部に略直角方向へ貫通した貫通孔をタンク本体３の上下方向に複数穿設したので、尿素水の流動により、尿素水が貫通孔を通過するたびに尿素水が攪拌され、溶液の均一化が図れる。
更に、補強ステー２１は前記平面部に対して厚みの比率が小さくなっており、小さくなった面（補強ステー２１の厚さ方向の面）が尿素水の流動により最も大きい曲げモーメントを受け易い方向に向いているので、補強ステー２１自体に尿素水が作用する作用力は小さくなり、配管組立部材２８の蓋部材３に取付けられている各配管に発生する曲げ応力は低減される。
The flat portion of the reinforcing stay 21 is arranged along a direction (substantially perpendicular to the longitudinal direction of the heat radiating box 25) that is susceptible to the largest bending moment due to the flow of urea water in the tank body 2. Since the basic horizontal section has a closed section structure, the rigidity against torsion is also enhanced.
Further, since a plurality of through holes penetrating in the substantially perpendicular direction to the flat portion of the reinforcing stay 21 are formed in the vertical direction of the tank main body 3, the urea water flows each time the urea water passes through the through holes due to the flow of the urea water. The solution is stirred to make the solution uniform.
Furthermore, the ratio of the thickness of the reinforcing stay 21 with respect to the flat portion is small, and the reduced surface (surface in the thickness direction of the reinforcing stay 21) is likely to receive the largest bending moment due to the flow of urea water. Therefore, the acting force of the urea water acting on the reinforcing stay 21 itself is reduced, and the bending stress generated in each pipe attached to the lid member 3 of the pipe assembly member 28 is reduced.
図４は本発明と従来構造との剛性及び重量比較図を示す。
これは、ＣＡＥ解析に基づいたもので、従来品を基準１００として効果を記載してある。
表の横方向に従来品、補強部材 無、補強部材 有、縦方向に上から順次比較の外観形状、識別センサの外径と材料、レベルセンサの外径、固有振動数及び重量比較をしてある。
（１）；従来品に対し、補強ステー無で識別センサを樹脂パイプ、レベルセンサの外郭の外径をφ３３⇒φ１０にしたものは、固有振動数が１００⇒７０となり従来品より３０％低下している。重量は当然１００⇒６６となり軽くなっている。
（２）；従来品に対し、本実施形態の補強ステー有で識別センサを樹脂パイプ、レベルセンサの外郭の外径をφｄ⇒φｄ×０．３にしたものは、固有振動数が１００⇒１００となり剛性が従来品と略同じとなり、重量は１００⇒８２となり１８％の重量軽減となった。
（３）；図４には記載してないが、高価で重量の重いステンレスパイプを細くし、且つ識別センサの外郭を樹脂材にしたので、コスト低減が可能であることが判明した。
FIG. 4 shows a comparison of rigidity and weight between the present invention and the conventional structure.
This is based on CAE analysis, and the effect is described with a conventional product as a standard 100.
Compared with the conventional product in the horizontal direction of the table, no reinforcing member, with the reinforcing member, and in the vertical direction, the comparison of the appearance from the top, the outer diameter and material of the identification sensor, the outer diameter of the level sensor, the natural frequency, and the weight is there.
(1): Compared with the conventional product, when the identification sensor is made of resin pipe and the outer diameter of the level sensor outer diameter is φ33⇒φ10 without reinforcing stay, the natural frequency is 100⇒70, which is 30% lower than the conventional product. ing. The weight is naturally 100⇒66 and lighter.
(2): Compared to the conventional product, with the reinforcement stay of this embodiment, the identification sensor is a resin pipe, and the outer diameter of the outer shell of the level sensor is φd⇒φd × 0.3, the natural frequency is 100⇒100 The rigidity was almost the same as the conventional product, and the weight was 100⇒82, which was a 18% weight reduction.
(3); Although not shown in FIG. 4, it has been found that an expensive and heavy stainless steel pipe is made thin and the outer shell of the identification sensor is made of a resin material, so that the cost can be reduced.
特に、尿素水タンク内の尿素水の温度管理のためのヒータ装置の軽量化及びコスト低減を目的とした尿素水タンク内ヒータ装置。 In particular, a heater device in the urea water tank for the purpose of reducing the weight and reducing the cost of the heater device for temperature control of the urea water in the urea water tank.
１、２０ 尿素水タンク
２ タンク本体
３ 蓋部材
４ 加温パイプ（加温用配管）
５、２３ レベルセンサ（レベルセンサ用配管）
６、２４ 識別センサ（識別センサ用配管）
７、２５ 放熱箱（放熱部材）
９ 尿素水送出パイプ（尿素水送出用配管）
１０ エアー抜きパイプ（エアー抜き用配管）
１１、２８ 配管ユニット
２１ 補強ステー
２２ 連結ブラケット
２９ 取付ブラケット
1, 20 Urea water tank 2 Tank body 3 Lid member 4 Heating pipe (heating pipe)
5, 23 Level sensor (level sensor piping)
6, 24 Identification sensor (identification sensor piping)
7, 25 Heat radiation box (heat radiation member)
9 Urea water delivery pipe (Urea water delivery pipe)
10 Air vent pipe (pipe for air vent)
11, 28 Piping unit 21 Reinforcing stay 22 Connecting bracket 29 Mounting bracket
Claims (5)
該蓋部材の貫通孔に嵌着されて前記タンク本体内を下面に向かって延び、前記タンク本体内に貯溜される尿素水を加温する流体が流れる加温用配管と、
前記蓋部材に取付けられて前記タンク本体内を下面に向かって延び、前記タンク本体内に貯溜される尿素水を前記タンク外に尿素水送出する尿素水送出用配管と、
前記蓋部材に取付けられて前記タンク本体内を下面に向かって延び、前記タンク本体内に貯溜される尿素水の濃度を検出する識別センサ用配管と、
前記蓋部材に取付けられて前記タンク本体内を下面に向かって延び、前記タンク本体内に貯溜される尿素水の残留量を検知するレベルセンサ用配管と、
前記蓋部材に取付けられて先端部が前記タンク本体内に開口して、前記タンク本体内空気の入出通路となるエアー抜き用配管と、
前記加温用配管の前記タンク本体の底部に位置する部分で、前記尿素水送出用配管の吸引口と、
前記識別センサ用配管の下部を囲繞して前記タンク本体の底部から浮いた状態で配置され前記蓋部材と同方向に長い箱型の放熱部材と、
両端が前記蓋部材及び前記放熱部材の夫々に固着され、前記蓋部材の長手方向と略直角方向に平面部が配設された板状の補強部材と、を備えたことを特徴とする尿素水タンク内の配管ユニット構造。 A substantially rectangular lid member that is detachably attached to the upper surface of the urea water storage tank body and has a through-hole through which the piping member passes;
A heating pipe that is fitted in the through-hole of the lid member and extends in the tank body toward the lower surface, and a fluid for heating the urea water stored in the tank body flows;
A urea water delivery pipe which is attached to the lid member and extends toward the lower surface in the tank body, and sends urea water stored in the tank body to the outside of the tank;
A pipe for an identification sensor that is attached to the lid member and extends in the tank body toward the lower surface, and detects the concentration of urea water stored in the tank body;
A level sensor pipe that is attached to the lid member and extends in the tank body toward the lower surface, and detects a residual amount of urea water stored in the tank body;
An air vent pipe that is attached to the lid member and has a tip opened in the tank main body and serves as an inlet / outlet passage for air in the tank main body,
In the part located at the bottom of the tank body of the heating pipe, the suction port of the urea water delivery pipe,
A box-shaped heat dissipating member that is disposed in a state of surrounding the lower part of the pipe for the identification sensor and floating from the bottom of the tank body, and is long in the same direction as the lid member;
Urea water, comprising: a plate-like reinforcing member having both ends fixed to the lid member and the heat radiating member, and a flat surface portion disposed in a direction substantially perpendicular to the longitudinal direction of the lid member. Piping unit structure inside the tank.
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| JP2009215096A JP5606031B2 (en) | 2009-09-17 | 2009-09-17 | Piping unit structure in urea water tank |
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| JP2009215096A JP5606031B2 (en) | 2009-09-17 | 2009-09-17 | Piping unit structure in urea water tank |
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| JP5606031B2 JP5606031B2 (en) | 2014-10-15 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108060954A (en) * | 2017-12-06 | 2018-05-22 | 潍柴动力股份有限公司 | A kind of urea liquid level sensor |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104712409B (en) * | 2015-02-11 | 2017-03-08 | 安徽江淮汽车集团股份有限公司 | A kind of acoustic filter belt supporting frame assembly |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57184248U (en) * | 1981-05-18 | 1982-11-22 | ||
| JPS60178355U (en) * | 1984-05-08 | 1985-11-27 | 三菱自動車工業株式会社 | In-tank fuel supply pump support device |
| JPH01102470U (en) * | 1987-12-28 | 1989-07-11 | ||
| JPH0814713A (en) * | 1994-06-24 | 1996-01-19 | Nakajima Jidosha Denso:Kk | Oil separator for recovering fluorocarbon |
| JP2004284612A (en) * | 2003-03-20 | 2004-10-14 | Kougi Kenkyusho:Kk | Liquid feed controller for use in tank truck |
| JP2006226282A (en) * | 2005-01-21 | 2006-08-31 | Tokyo Radiator Mfg Co Ltd | Piping unit of reducing agent tank and manufacturing method thereof |
-
2009
- 2009-09-17 JP JP2009215096A patent/JP5606031B2/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57184248U (en) * | 1981-05-18 | 1982-11-22 | ||
| JPS60178355U (en) * | 1984-05-08 | 1985-11-27 | 三菱自動車工業株式会社 | In-tank fuel supply pump support device |
| JPH01102470U (en) * | 1987-12-28 | 1989-07-11 | ||
| JPH0814713A (en) * | 1994-06-24 | 1996-01-19 | Nakajima Jidosha Denso:Kk | Oil separator for recovering fluorocarbon |
| JP2004284612A (en) * | 2003-03-20 | 2004-10-14 | Kougi Kenkyusho:Kk | Liquid feed controller for use in tank truck |
| JP2006226282A (en) * | 2005-01-21 | 2006-08-31 | Tokyo Radiator Mfg Co Ltd | Piping unit of reducing agent tank and manufacturing method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108060954A (en) * | 2017-12-06 | 2018-05-22 | 潍柴动力股份有限公司 | A kind of urea liquid level sensor |
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| JP5606031B2 (en) | 2014-10-15 |
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