JP2003214262A - Egr gas cooling device - Google Patents
Egr gas cooling deviceInfo
- Publication number
- JP2003214262A JP2003214262A JP2002015583A JP2002015583A JP2003214262A JP 2003214262 A JP2003214262 A JP 2003214262A JP 2002015583 A JP2002015583 A JP 2002015583A JP 2002015583 A JP2002015583 A JP 2002015583A JP 2003214262 A JP2003214262 A JP 2003214262A
- Authority
- JP
- Japan
- Prior art keywords
- heat exchanger
- egr gas
- cooling device
- medium fluid
- internal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F1/00—Tubular elements; Assemblies of tubular elements
- F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
- F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
- F28F1/14—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending longitudinally
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D15/00—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies
- F28D15/02—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes
- F28D15/0266—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes with separate evaporating and condensing chambers connected by at least one conduit; Loop-type heat pipes; with multiple or common evaporating or condensing chambers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F1/00—Tubular elements; Assemblies of tubular elements
- F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
- F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
- F28F1/34—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending obliquely
- F28F1/36—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending obliquely the means being helically wound fins or wire spirals
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
- F28D21/0001—Recuperative heat exchangers
- F28D21/0003—Recuperative heat exchangers the heat being recuperated from exhaust gases
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Geometry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Exhaust-Gas Circulating Devices (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、熱媒体流体に冷却
水を使用しない空冷タイプのＥＧＲガス冷却装置に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air cooling type EGR gas cooling device which does not use cooling water as a heat medium fluid.
【０００２】[0002]
【従来の技術】排気ガスの一部を排気系から取出して、
再びエンジンの吸気系に戻し、混合気に加える方法は、
ＥＧＲ（Ｅｘｈａｕｓｔ Ｇａｓ Ｒｅｃｉｒｃｕｌａ
ｔｉｏｎ：排気再循環）と称される。ＥＧＲはＮＯｘ
（窒素酸化物）の発生抑制、ポンプ損失の低減、燃焼ガ
スの温度低下に伴う冷却液への放熱損失の低減、作動ガ
ス量・組成の変化による比熱比の増大と、これに伴うサ
イクル効率の向上など、多くの効果が得られることか
ら、エンジンの排気ガス浄化、熱効率を改善するには有
効な方法とされている。2. Description of the Related Art A part of exhaust gas is taken out from an exhaust system,
To return to the intake system of the engine again and add to the mixture,
EGR (Exhaust Gas Recircular
(ion: exhaust gas recirculation). EGR is NOx
Suppression of (nitrogen oxide) generation, reduction of pump loss, reduction of heat radiation loss to the cooling liquid due to temperature decrease of combustion gas, increase of specific heat ratio due to change of working gas amount / composition, and accompanying cycle efficiency Since many effects such as improvement can be obtained, it is considered to be an effective method for purifying engine exhaust gas and improving thermal efficiency.
【０００３】しかるに、ＥＧＲガスの温度が高くなりか
つＥＧＲガス量が増大すると、その熱作用によりＥＧＲ
バルブの耐久性が劣化し、早期破損を招く場合があった
り、その防止のために水冷構造とする必要があることや
吸気温度の上昇に伴い充填効率の低下による燃費の低下
などが認識されている。このような事態を避けるため、
エンジンの冷却液などによってＥＧＲガスを冷却する装
置が用いられている。この装置としては、一般に多管式
の熱交換器が利用される。However, when the temperature of the EGR gas rises and the amount of EGR gas increases, the EGR gas is heated and the EGR gas is heated.
It has been recognized that the durability of the valve may deteriorate and cause early damage, that it is necessary to use a water-cooled structure to prevent it, and that fuel efficiency decreases due to a decrease in filling efficiency as the intake temperature rises. There is. To avoid this situation,
A device for cooling the EGR gas with an engine coolant or the like is used. A multi-tube heat exchanger is generally used as this device.
【０００４】[0004]
【発明が解決しようとする課題】しかるに、多管式熱交
換器の場合は、エンジンの冷却液などの冷却水を冷媒と
して使用するためラジエーターの熱負荷が増大するとい
う欠点があり、またエンジンの冷却液などの冷却水を冷
媒として用いてＥＧＲガスを冷却する場合、エンジンの
冷却水量が何等かの原因により減少して熱交換器内の水
位が低下し、伝熱面を構成する部材が水面より露出する
と、高い熱応力を生じて疲労破壊の原因となったり、熱
交換性能も低下するという問題を生じる。However, in the case of the multi-tube heat exchanger, there is a drawback that the heat load of the radiator increases because the cooling water such as the engine cooling liquid is used as the refrigerant, and the engine heat is increased. When EGR gas is cooled using cooling water such as cooling liquid as a refrigerant, the amount of cooling water in the engine decreases for some reason, the water level in the heat exchanger decreases, and the member forming the heat transfer surface is Further exposure causes a problem that high thermal stress is generated to cause fatigue fracture and heat exchange performance is also deteriorated.
【０００５】本発明は、上記した多管式熱交換器の問題
を解決するためになされたもので、冷却水を使用しない
空冷タイプとすることによって、ラジエーターの熱負荷
を軽減し、また内部熱応力による疲労破壊がなく、比較
的簡易な手段で効率よく冷却できるＥＧＲガス冷却装置
を提供しようとするものである。The present invention has been made in order to solve the above-mentioned problems of the multi-tube heat exchanger. By adopting an air cooling type that does not use cooling water, the heat load on the radiator is reduced and the internal heat is reduced. It is an object of the present invention to provide an EGR gas cooling device which can be efficiently cooled by a relatively simple means without causing fatigue damage due to stress.
【０００６】[0006]
【課題を解決するための手段】本発明に係るＥＧＲガス
冷却装置は、熱媒体流体に冷却水を用いない空冷タイプ
のＥＧＲガス冷却装置であって、高温のＥＧＲガス流入
口および低温のＥＧＲガス流出口を有するＥＧＲガス冷
却器本体の内外にそれぞれＥＧＲガスを冷却する内部熱
交換器と外部熱交換器を備え、前記内部熱交換器と外部
熱交換器はそれぞれ熱媒体流体が流通し得るよう配管し
た少なくとも１組の熱交換器群で構成されていることを
特徴とし、また、前記内部熱交換器は熱媒体流体が流通
し得る配管の外周に軸方向フィンを放射状に配設して構
成され、前記外部熱交換器は熱媒体流体が流通し得る配
管の外周にスパイラル状にフィンを付けたスパイラルフ
ィンチューブあるいはディスク状フィンを設けたディス
クフィンチューブ等のフィンチューブを配設して構成さ
れていることを特徴とし、さらに、前記内部熱交換器と
外部熱交換器のいずれか一方または両方の伝熱面に毛細
管構造を有するウィック材を設けたことを特徴とし、さ
らにまた、前記内部熱交換器と外部熱交換器のいずれか
一方または両方の配管の略全長にわたりウィック材を設
けたことを特徴とするものである。An EGR gas cooling device according to the present invention is an air-cooling type EGR gas cooling device that does not use cooling water as a heat medium fluid, and has a high temperature EGR gas inlet and a low temperature EGR gas. An EGR gas cooler body having an outlet is provided with an internal heat exchanger and an external heat exchanger for cooling the EGR gas inside and outside, respectively, so that the internal heat exchanger and the external heat exchanger can respectively pass a heat medium fluid. It is characterized in that it is constituted by at least one set of piped heat exchangers, and the internal heat exchanger is constructed by radially arranging axial fins on the outer periphery of the pipe through which the heat medium fluid can flow. The external heat exchanger is a spiral fin tube in which spiral fins are attached to the outer circumference of a pipe through which a heat medium fluid can flow, or a disk fin tube provided with a disk fin. And a wick member having a capillary structure is provided on the heat transfer surface of one or both of the internal heat exchanger and the external heat exchanger. Furthermore, the wick material is provided over substantially the entire length of one or both of the internal heat exchanger and the external heat exchanger.
【０００７】すなわち、本発明のＥＧＲガス冷却装置
は、配管内を流通する熱媒体流体をそのまま循環させる
方式、あるいは熱媒体流体がＥＧＲガス冷却器本体の内
部に配置した内部熱交換器内で気化して燃料冷却器本体
の外部に配置した外部熱交換器までガス体で移動し、外
部熱交換器で冷却されて液化して再び内部熱交換器へ達
するという熱媒体流体の作用によって冷却器本体内のＥ
ＧＲガスを熱障害を生じない温度まで冷却する方式であ
る。また、熱交換器の配管内にウィック材を設けること
により、ウィック材の毛細管内を表面張力によって上昇
する間に高温のＥＧＲガスの熱エネルギーにより加熱さ
れて蒸発し、内部熱交換器内での気化が促進され、前記
熱媒体流体の蒸発流は圧力の低い外部熱交換器へと流れ
てウィック材の作用により効果的に冷却されて凝縮し、
元の液体に戻る。なお、本発明における熱媒体流体とし
ては、フロリナート（米国スリーエム社の商品）のＦＣ
−７５、ＦＣ−３２８３、ＦＣ−４０、ＦＣ−４３、Ｆ
Ｃ−７０、ＦＣ−５３１２や、ガルデン（イタリア国ス
ジモント社の商品）のＬＳ２００、ＬＳ２１０、ＬＳ２
１５、ＨＳ２４０、ＨＳ２６０の他、ナフタリン、水
銀、ダウサムＡ、硫黄等が使用できる。That is, the EGR gas cooling device of the present invention is a system in which the heat medium fluid flowing in the pipe is circulated as it is, or the heat medium fluid is cooled in the internal heat exchanger arranged inside the EGR gas cooler body. The heat medium fluid that is liquefied and moves to the external heat exchanger located outside the fuel cooler body by a gas body, is cooled by the external heat exchanger, liquefies, and reaches the internal heat exchanger again E in
This is a method of cooling the GR gas to a temperature at which heat failure does not occur. Further, by providing the wick material in the pipe of the heat exchanger, the wick material is heated and evaporated by the heat energy of the high temperature EGR gas while rising in the capillary tube of the wick material due to surface tension, Vaporization is promoted, and the vaporized stream of the heat carrier fluid flows to an external heat exchanger having a low pressure and is effectively cooled and condensed by the action of the wick material
Return to the original liquid. The heat carrier fluid used in the present invention is FC of Fluorinert (a product of 3M Co., USA).
-75, FC-3283, FC-40, FC-43, F
C-70, FC-5312, Galden (product of Sugimont, Italy) LS200, LS210, LS2
In addition to 15, HS240 and HS260, naphthalene, mercury, dowsam A, sulfur and the like can be used.
【０００８】[0008]
【発明の実施の形態】図１は本発明の一実施例装置を示
す概略縦断面図、図２は図１ＡーＡ線上の断面図であ
り、１はＥＧＲガス冷却器本体、２は内部熱交換器、３
は外部熱交換器、４は高温のＥＧＲガス入口、５は低温
のＥＧＲガス出口、６はウィック材である。1 is a schematic vertical sectional view showing an apparatus of an embodiment of the present invention, FIG. 2 is a sectional view taken along the line A--A in FIG. 1, wherein 1 is an EGR gas cooler main body and 2 is internal heat. Exchanger, 3
Is an external heat exchanger, 4 is a high temperature EGR gas inlet, 5 is a low temperature EGR gas outlet, and 6 is a wick material.
【０００９】図１において、ＥＧＲガス冷却器本体１は
密閉構造の円筒体で構成され、上部側に高温のＥＧＲガ
ス入口４、下部側に低温のＥＧＲガス出口５がそれぞれ
設けられている。内部熱交換器２と外部熱交換器３はそ
れぞれＥＧＲガス冷却器本体１の内部と外部間にループ
状に配管した熱媒体流体が流通し得る一本のエンドレス
パイプＰに配設され、この一本のエンドレスパイプＰに
配設された１組の熱交換器がここではＥＧＲガス冷却器
本体１の同一円周上に４組配設されている。内部熱交換
器２はエンドレスパイプＰの外周に軸方向フィン２−１
を放射状に配設して構成され、外部熱交換器３はエンド
レスパイプＰの外周にスパイラルフィン３−１を配設し
て構成されている。また、内部熱交換器２と外部熱交換
器３が配設されているエンドレスパイプＰの内部には、
毛細管構造を有するウィック材６が管表面に張付けられ
ている。４−１、５−１は締結用フランジである。In FIG. 1, the EGR gas cooler main body 1 is composed of a cylindrical body having a closed structure, and has a high temperature EGR gas inlet 4 on the upper side and a low temperature EGR gas outlet 5 on the lower side. The internal heat exchanger 2 and the external heat exchanger 3 are arranged in a single endless pipe P through which a heat medium fluid, which is piped in a loop between the inside and outside of the EGR gas cooler body 1, can flow. Here, four sets of heat exchangers arranged on the endless pipe P are arranged on the same circumference of the EGR gas cooler main body 1. The internal heat exchanger 2 has axial fins 2-1 on the outer circumference of the endless pipe P.
Are arranged radially, and the external heat exchanger 3 is formed by arranging spiral fins 3-1 on the outer circumference of the endless pipe P. Further, inside the endless pipe P in which the internal heat exchanger 2 and the external heat exchanger 3 are arranged,
A wick material 6 having a capillary structure is attached to the tube surface. 4-1 and 5-1 are fastening flanges.
【００１０】上記の装置構成において、高温のＥＧＲガ
スは、当該ＥＧＲガス入口４よりＥＧＲガス冷却器本体
１内に供給される。一方、ＥＧＲガス冷却器本体１内の
４組の内部熱交換器２および外部熱交換器３には、それ
ぞれのエンドレスパイプＰ内に熱媒体流体を通流させて
いる。この時、各エンドレスパイプＰ内を流れる熱媒体
流体が前記ウィック材６の毛細管内を当該熱媒体流体の
表面張力によって上昇し、ＥＧＲガス冷却器本体１内の
高温のＥＧＲガスの熱エネルギーによって温められて蒸
発するとともに、その蒸発流は当該エンドレスパイプＰ
内を通り、外部熱交換器３で凝縮されて元の液体流に戻
り、再び内部熱交換器２へ循環流入する。一方、ＥＧＲ
ガス冷却器本体１内のＥＧＲガスは、前記内部熱交換器
２内の熱媒体流体の蒸発により熱を奪われて低温のＥＧ
Ｒガス出口５より外部に流出する。なお、ウィック材６
等を設けずに熱媒体流体を循環させてもよい。In the above apparatus configuration, the high temperature EGR gas is supplied from the EGR gas inlet 4 into the EGR gas cooler main body 1. On the other hand, in the four sets of the internal heat exchanger 2 and the external heat exchanger 3 in the EGR gas cooler body 1, the heat medium fluid is made to flow in the respective endless pipes P. At this time, the heat carrier fluid flowing in each endless pipe P rises in the capillaries of the wick material 6 due to the surface tension of the heat carrier fluid, and is heated by the heat energy of the high temperature EGR gas in the EGR gas cooler body 1. When the endless pipe P
After passing through the inside, it is condensed in the external heat exchanger 3 to return to the original liquid flow, and then circulates back into the internal heat exchanger 2. On the other hand, EGR
The EGR gas in the gas cooler main body 1 is deprived of heat by the evaporation of the heat medium fluid in the internal heat exchanger 2, and the EGR gas at a low temperature
It flows out from the R gas outlet 5. In addition, wick material 6
The heat medium fluid may be circulated without providing the above.
【００１１】[0011]
【発明の効果】以上説明したごとく、本発明によれば、
高温のＥＧＲガスを冷却水を用いることなく冷却するこ
とができるので、ラジエーターの熱負荷を軽減でき、ま
た内部熱応力による疲労破壊がなく、比較的簡易な手段
で効率よく冷却することができるという優れた効果を奏
する。As described above, according to the present invention,
Since the high temperature EGR gas can be cooled without using cooling water, the heat load on the radiator can be reduced, and fatigue damage due to internal thermal stress does not occur, and it can be efficiently cooled by a relatively simple means. It has an excellent effect.
【図１】本発明の一実施例装置を示す概略縦断面図であ
る。FIG. 1 is a schematic vertical sectional view showing an apparatus according to an embodiment of the present invention.
【図２】図１ＡーＡ線上の断面図である。FIG. 2 is a cross-sectional view taken along the line AA of FIG.
１ ＥＧＲガス冷却器本体 ２ 内部熱交換器 ２−１ 軸方向フィン ３ 外部熱交換器 ３−１ スパイラルフィン ４ 高温のＥＧＲガス入口 ４−１、５−１ 締結用フランジ ５ 低温のＥＧＲガス出口 1 EGR gas cooler body 2 Internal heat exchanger 2-1 Axial fin 3 External heat exchanger 3-1 Spiral fin 4 High temperature EGR gas inlet 4-1 and 5-1 Fastening flange 5 Low temperature EGR gas outlet
Claims (4)
プのＥＧＲガス冷却装置であって、高温のＥＧＲガス流
入口および低温のＥＧＲガス流出口を有するＥＧＲガス
冷却器本体の内外にそれぞれＥＧＲガスを冷却する内部
熱交換器と外部熱交換器を備え、前記内部熱交換器と外
部熱交換器はそれぞれ熱媒体流体が流通し得るよう配管
した少なくとも１組の熱交換器群で構成されていること
を特徴とするＥＧＲガス冷却装置。1. An EGR gas cooling device of an air cooling type which does not use cooling water as a heat medium fluid, wherein the EGR gas cooler main body having a high temperature EGR gas inlet and a low temperature EGR gas outlet respectively have EGR inside and outside. An internal heat exchanger for cooling the gas and an external heat exchanger, wherein each of the internal heat exchanger and the external heat exchanger is composed of at least one heat exchanger group piped to allow passage of a heat medium fluid. An EGR gas cooling device characterized in that
得る配管の外周に軸方向フィンを放射状に配設して構成
され、前記外部熱交換器は熱媒体流体が流通し得る配管
の外周にフィンチューブを配設して構成されていること
を特徴とする請求項１記載のＥＧＲガス冷却装置。2. The internal heat exchanger is constructed by radially arranging axial fins on the outer periphery of a pipe through which the heat medium fluid can flow, and the external heat exchanger is formed of a pipe through which the heat medium fluid can flow. The EGR gas cooling device according to claim 1, wherein a fin tube is arranged on the outer periphery of the EGR gas cooling device.
れか一方または両方の伝熱面に毛細管構造を有するウィ
ック材を設けたことを特徴とする請求項１または２記載
のＥＧＲガス冷却装置。3. The EGR gas cooling according to claim 1, wherein a wick material having a capillary structure is provided on a heat transfer surface of one or both of the internal heat exchanger and the external heat exchanger. apparatus.
れか一方または両方の配管の略全長にわたりウィック材
を設けたことを特徴とする請求項１ないし３のうちいず
れか１項記載のＥＧＲガス冷却装置。4. The wick material is provided over substantially the entire length of one or both of the internal heat exchanger and the external heat exchanger, and the wick material is provided. EGR gas cooling device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002015583A JP2003214262A (en) | 2002-01-24 | 2002-01-24 | Egr gas cooling device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002015583A JP2003214262A (en) | 2002-01-24 | 2002-01-24 | Egr gas cooling device |
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| Publication Number | Publication Date |
|---|---|
| JP2003214262A true JP2003214262A (en) | 2003-07-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2002015583A Withdrawn JP2003214262A (en) | 2002-01-24 | 2002-01-24 | Egr gas cooling device |
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| JP (1) | JP2003214262A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009216262A (en) * | 2008-03-07 | 2009-09-24 | Toyota Industries Corp | Ebullient cooling device and cooling method |
| WO2010053429A1 (en) * | 2008-11-05 | 2010-05-14 | Scania Cv Ab | Arrangement for cooling of recirculated exhaust gases in a combustion engine |
| KR101787237B1 (en) | 2016-02-16 | 2017-10-19 | 부경대학교 산학협력단 | Display apparatus for icerink |
| KR101809818B1 (en) | 2016-02-16 | 2017-12-18 | 부경대학교 산학협력단 | Display apparatus for icerink |
| KR20180000937U (en) * | 2018-02-20 | 2018-04-04 | (주)알앤알스포츠 | An appratus of light source for ice surface, and a icing sports facility incluing it |
| JP7290548B2 (en) | 2019-11-07 | 2023-06-13 | 日野自動車株式会社 | Exhaust gas recirculation device |
-
2002
- 2002-01-24 JP JP2002015583A patent/JP2003214262A/en not_active Withdrawn
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009216262A (en) * | 2008-03-07 | 2009-09-24 | Toyota Industries Corp | Ebullient cooling device and cooling method |
| WO2010053429A1 (en) * | 2008-11-05 | 2010-05-14 | Scania Cv Ab | Arrangement for cooling of recirculated exhaust gases in a combustion engine |
| CN102203402A (en) * | 2008-11-05 | 2011-09-28 | 斯堪尼亚商用车有限公司 | Arrangement for cooling of recirculated exhaust gases in a combustion engine |
| US8627807B2 (en) | 2008-11-05 | 2014-01-14 | Scania Cv Ab | Arrangement for cooling of recirculated exhaust gases in a combustion engine |
| KR101787237B1 (en) | 2016-02-16 | 2017-10-19 | 부경대학교 산학협력단 | Display apparatus for icerink |
| KR101809818B1 (en) | 2016-02-16 | 2017-12-18 | 부경대학교 산학협력단 | Display apparatus for icerink |
| KR20180000937U (en) * | 2018-02-20 | 2018-04-04 | (주)알앤알스포츠 | An appratus of light source for ice surface, and a icing sports facility incluing it |
| KR200487196Y1 (en) | 2018-02-20 | 2018-08-21 | (주)알앤알스포츠 | An appratus of light source for ice surface, and a icing sports facility incluing it |
| JP7290548B2 (en) | 2019-11-07 | 2023-06-13 | 日野自動車株式会社 | Exhaust gas recirculation device |
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