JP2004116495A - Egr gas cooling system - Google Patents

Egr gas cooling system Download PDF

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Publication number
JP2004116495A
JP2004116495A JP2002285056A JP2002285056A JP2004116495A JP 2004116495 A JP2004116495 A JP 2004116495A JP 2002285056 A JP2002285056 A JP 2002285056A JP 2002285056 A JP2002285056 A JP 2002285056A JP 2004116495 A JP2004116495 A JP 2004116495A
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JP
Japan
Prior art keywords
egr
pipe
egr gas
engine
cooling water
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.)
Pending
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JP2002285056A
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Japanese (ja)
Inventor
Takahiko Naito
内藤　孝彦
Naoya Kubota
久保田　尚矢
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Sankei Giken Kogyo Co Ltd
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Sankei Giken Kogyo Co Ltd
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Priority to JP2002285056A priority Critical patent/JP2004116495A/en
Publication of JP2004116495A publication Critical patent/JP2004116495A/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/41—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories characterised by the arrangement of the recirculation passage in relation to the engine, e.g. to cylinder heads, liners, spark plugs or manifolds; characterised by the arrangement of the recirculation passage in relation to specially adapted combustion chambers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/22—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with coolers in the recirculation passage
    • F02M26/29—Constructional details of the coolers, e.g. pipes, plates, ribs, insulation or materials
    • F02M26/32—Liquid-cooled heat exchangers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/11—Manufacture or assembly of EGR systems; Materials or coatings specially adapted for EGR systems

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust-Gas Circulating Devices (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide an EGR gas cooling system having a simple structure and an excellent cooling effect, the so-called EGR gas being part of exhaust gas discharged from an exhaust port of an engine of an automobile or the like to be recirculated to an intake port of the engine. <P>SOLUTION: An EGR pipe 3 for recirculating part of the exhaust gas discharged from the exhaust port of the engine to the intake port of the engine as the EGR gas, is bent and arranged between an engine exhaust manifold 1 and an intake manifold 2. At least one portion of the EGR pipe 3 including a bent portion 3c has a double tube structure with an inner and outer tubes. An introduction port 11 for cooling water which is introduced to the space between the inner and outer tubes 31, 32 so as to cool the EGR gas flowing through the inner tube 31 is provided in the vicinity of the bent portion 3c. <P>COPYRIGHT: (C)2004,JPO

Description

【０００１】
【発明の属する技術分野】
本発明は、自動車等のエンジンの排気系から排出された排気ガスの一部をＥＧＲガスとしてエンジンの吸気系に再循環させるいわゆるＥＧＲガスの冷却装置に関する。
【０００２】
【従来の技術】
従来、上記のようなエンジンにおいて、該エンジンから排出される排気ガス中の窒素酸化物を低減させる等の目的で、エンジンの排気系から排出される排気ガスの一部をＥＧＲガスとしてエンジンの吸気系に再循環させるいわゆる排気ガス再循環（ＥＧＲ）装置を備えることは知られている。
【０００３】
この場合、吸気系に再循環させるＥＧＲガスは、適度に冷却する必要があり、従来は例えば図３に示すようにエンジンの排気マニホールド１から吸気マニホールドの吸気口２にＥＧＲガスを導くためのＥＧＲ配管３の途中にＥＧＲガス冷却装置４を設けるようにしている。図中、５は組付誤差や振動吸収用の蛇腹管、６はフランジ継手、７はＥＧＲ配管３と吸気マニホールドの吸気口２とを開閉可能に連通接続するＥＧＲバルブ、８は図に省略したエアクリーナからの吸気を吸気マニホールドの吸気口２に導く連通管である。
【０００４】
上記のようなＥＧＲガス冷却装置としては、例えば下記特許文献１や特許文献２のように、ＥＧＲ配管に連通する多数の伝熱管を外筒内に収容配置し、その外筒内の隣り合う伝熱管間に冷却水を流通させて上記各伝熱管内を流れるＥＧＲガスを冷却するものが知られているが、構造が複雑で製造コストや車載重量が増大する等の不具合がある。
【０００５】
そこで、例えば下記特許文献３のようにＥＧＲ配管の一部を内外二重に形成し、その内外管間に冷却水を流通させて、上記内管内を流れるＥＧＲガスを冷却する構成とし、かつ上記内管の表面積を増大させるために内管の横断面形状を波形に形成して冷却効率を高めることが提案されているが、上記内管内を流れるＥＧＲガスは単に直線状に通過するだけなので、必ずしも充分な冷却効果が得られない等の問題があった。
【０００６】
【特許文献１】
特開平１１−１９３９９２号公報
【特許文献２】
特開平１１−１９３９９３号公報
【特許文献３】
特開２０００−２６５９０８号公報
【０００７】
【発明が解決しようとする課題】
本発明は上記の問題点に鑑みて提案されたもので、簡単な構成により、冷却効率の優れたＥＧＲガス冷却装置を提供することを目的とする。
【０００８】
【課題を解決するための手段】
上記の目的を達成するために本発明によるＥＧＲガス冷却装置は、以下の構成としたものである。すなわち、エンジンの排気口から排出された排気ガスの一部をＥＧＲガスとしてエンジンの吸気口に再循環させるＥＧＲ配管を、上記エンジンの排気マニホールドと吸気マニホールドとの間に屈曲させて配管すると共に、上記ＥＧＲ配管の少なくとも一部を上記屈曲部をも含めて内外二重に形成し、その内外管間に冷却水を導入して上記内管内を流れるＥＧＲガスを冷却するための冷却水導入口を上記屈曲部の近傍に設けたことを特徴とする。
【０００９】
【発明の実施の形態】
以下、本発明によるＥＧＲガス冷却装置を、図に示す実施形態に基づいて具体的に説明する。図１および図２は本発明によるＥＧＲガス冷却装置の一実施形態を示すもので、図１（ａ）は平面図、同図（ｂ）は正面図、図２はＥＧＲ配管の一部切り欠き拡大平面図であり、前記従来例と同様の機能を有する部材には同一の符号を付して重複する説明は省略する。
【００１０】
図示例のＥＧＲ配管３は、多数の屈曲部３ｃを有して排気マニホールド１と吸気マニホールドの吸気口２との間に配管され、そのＥＧＲ配管３の一端３ａ側はフランジ継手６を介して排気マニホールド１に、他端３ｂ側はＥＧＲバルブ７を介して吸気マニホールドの吸気口２にそれぞれ連通接続されている。
【００１１】
上記ＥＧＲ配管３は、排気マニホールド１側の一部を除いて内管３１と外管３２とで内外二重に形成され、内管３１の排気マニホールド１側は上記フランジ継手６まで延長して設けると共に、その途中には組付誤差や振動吸収用の蛇腹管５が接続されている。また外管３２の両端部は、絞り加工等を施すことによって内管３１の外周面に密着固定されている。
【００１２】
上記内外管３１・３２間には、エンジン冷却用の冷却水の一部を流通させて内管３１内を流れるＥＧＲガスを冷却する構成であり、その内外管３１・３２間に冷却水を導入するための冷却水導入口１１が、ＥＧＲ配管３の屈曲部３ｃの近傍に設けられている。特に、図の場合はＥＧＲ配管３の最も上流側（排気マニホールド１側）の屈曲部３ｃと上部側の屈曲部３ｃの２箇所に短管状の冷却水導入口１１を設けたもので、その各短管状の冷却水導入口１１に図に省略した連通管等を接続してエンジン冷却用の冷却水の一部を上記内外管３１・３２間に導入する構成である。図中、１２は上記内外管３１・３２間に導入した冷却水を排出するための冷却水排出口で、その排出口１２も本実施形態においては短管状に形成され、その短管状の排出口１２に図に省略した連通管等を介してエンジン冷却水の通路もしくは管路内に帰還させる構成である。１３は上記内外管３１・３２間に残留する空気を排出させるための短管状の空気排出口である。
【００１３】
なお上記のＥＧＲガス冷却装置を構成する部材の材質等は適宜であるが、好ましくはステンレス等の耐食性および耐熱性のよい金属を用いるとよく、特にＥＧＲ配管３を構成する内外管３１・３２としてＳＵＳ４３６等を用いると、耐食性および耐熱性がよいだけでなく、熱伝導性がよく、冷却効率を向上させることができる。また加工方法としては、例えばハイドロフォーム加工等を用いれば、屈曲部を有する中空二重のＥＧＲ配管にあっても容易に製造することができる。
【００１４】
上記の構成において、ＥＧＲ配管３の内外管３１・３２間に冷却水を流通させた状態で、図に省略したエンジンを作動させると、排気マニホールド１内に排出された排気ガスの一部がＥＧＲガスとして上記ＥＧＲ配管３の内管３１内に流入し、蛇腹管５を経て内外管３１・３２の二重管部分における内管３１内を移動する。その際、内外管３１・３２間に流通する冷却水によって上記内管３１内を流れるＥＧＲガスが順次冷却されるもので、特に本発明においてはＥＧＲ配管３の屈曲部３ｃの近傍に冷却水導入口１１を設けたことによって効率よく冷却することができる。
【００１５】
すなわち、内管３１内を流れるＥＧＲガスは、屈曲部を通過する際に内管３１の内面に順次衝突しながら向きを変える。そのため、内管３１の屈曲部は、いわゆる熱だまりとなって温度が激しく上昇するが、その屈曲部の近傍に冷却水導入口を設けることによって効率よく冷却することができるものである。とりわけ、ＥＧＲ配管の最も上流側の屈曲部、すなわち排気マニホールド１側に最も近い屈曲部の温度上昇は最も激しく、その屈曲部の近傍に冷却水導入口を設ければ、より効率よく冷却することができる。また上記実施形態のように複数個の屈曲部を有するＥＧＲ配管にあっては、それら複数個の屈曲部のうちのいずれか２つ以上もしくは全ての屈曲部の近傍に冷却水導入口を設けるようにしてもよく、そのようにすると、更に効率よく冷却することが可能となる。
【００１６】
上記のようにして冷却されたＥＧＲガスは、ＥＧＲ配管３の他端３ｂ側からＥＧＲバルブ７を介して吸気マニホールドの吸気口２に導かれ、図に省略したエアクリーナからの空気と共に、上記吸気マニホールドを介してエンジンの燃焼室に導かれて燃焼に供される。
【００１７】
【発明の効果】
以上のように本発明によるＥＧＲガス冷却装置は、エンジンの排気マニホールドと吸気マニホールドとの間に屈曲配管したＥＧＲ配管の少なくとも一部を上記屈曲部をも含めて内外二重に形成し、その内外管間に冷却水を導入するための冷却水導入口を上記屈曲部の近傍に設けたから、上記ＥＧＲ配管内を流れるＥＧＲガスを効率よく冷却することができるもので、極めて簡単な構成によって冷却効率の優れたＥＧＲガス冷却装置を安価に提供できる等の効果がある。
【図面の簡単な説明】
【図１】（ａ）は本発明によるＥＧＲガス冷却装置の一実施形態を示す平面図。
（ｂ）はその正面図。
【図２】上記ＥＧＲガス冷却装置におけるＥＧＲ配管の一部切り欠き拡大平面図。
【図３】（ａ）は従来のＥＧＲガス冷却装置の配置構成の一例を示す平面図。
（ｂ）はその正面図。
【符号の説明】
１　排気マニホールド
２　吸気口
３　ＥＧＲ配管
３ａ　一端
３ｂ　他端
３ｃ　屈曲部
３１　内管
３２　外管
１１　冷却水導入口
１２　配水管
１３　空気排出口[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a so-called EGR gas cooling device that recirculates a part of exhaust gas discharged from an exhaust system of an engine of an automobile or the like as EGR gas to an intake system of the engine.
[0002]
[Prior art]
Conventionally, in such an engine, a part of the exhaust gas discharged from the exhaust system of the engine is used as EGR gas for the purpose of reducing nitrogen oxides in the exhaust gas discharged from the engine. It is known to provide a so-called exhaust gas recirculation (EGR) device that recirculates the system.
[0003]
In this case, the EGR gas to be recirculated to the intake system needs to be appropriately cooled. Conventionally, for example, as shown in FIG. 3, an EGR gas for guiding the EGR gas from the exhaust manifold 1 of the engine to the intake port 2 of the intake manifold is provided. An EGR gas cooling device 4 is provided in the middle of the pipe 3. In the figure, 5 is a bellows tube for assembling errors and vibrations, 6 is a flange joint, 7 is an EGR valve that connects the EGR pipe 3 and the intake port 2 of the intake manifold so as to be able to open and close, and 8 is omitted in the figure. A communication pipe that guides intake air from the air cleaner to the intake port 2 of the intake manifold.
[0004]
As the above-described EGR gas cooling device, for example, as disclosed in Patent Document 1 and Patent Document 2 below, a number of heat transfer tubes communicating with an EGR pipe are housed and arranged in an outer cylinder, and adjacent heat transfer tubes in the outer cylinder are arranged. There is known an apparatus in which cooling water is circulated between heat pipes to cool the EGR gas flowing in each of the heat transfer pipes. However, there are problems such as a complicated structure, an increase in manufacturing cost and an increase in on-vehicle weight.
[0005]
Therefore, for example, as in Patent Document 3 below, a part of the EGR pipe is formed to be double inside and outside, and cooling water is circulated between the inside and outside pipes to cool the EGR gas flowing inside the inside pipe, and In order to increase the surface area of the inner tube, it has been proposed to increase the cooling efficiency by forming the cross-sectional shape of the inner tube in a waveform, but since the EGR gas flowing in the inner tube simply passes straight, There was a problem that a sufficient cooling effect could not always be obtained.
[0006]
[Patent Document 1]
Japanese Patent Application Laid-Open No. H11-193992 [Patent Document 2]
Japanese Patent Application Laid-Open No. H11-193993 [Patent Document 3]
JP 2000-265908 A
[Problems to be solved by the invention]
The present invention has been proposed in view of the above problems, and has as its object to provide an EGR gas cooling device having a simple configuration and excellent cooling efficiency.
[0008]
[Means for Solving the Problems]
To achieve the above object, an EGR gas cooling device according to the present invention has the following configuration. That is, an EGR pipe for recirculating a part of the exhaust gas discharged from the exhaust port of the engine as the EGR gas to the intake port of the engine is bent and piped between the exhaust manifold and the intake manifold of the engine, and At least a part of the EGR pipe is formed to be double inner and outer including the bent portion, and a cooling water inlet for introducing cooling water between the inner and outer pipes to cool EGR gas flowing through the inner pipe is provided. It is characterized in that it is provided near the bent portion.
[0009]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an EGR gas cooling device according to the present invention will be specifically described based on an embodiment shown in the drawings. 1 and 2 show an embodiment of an EGR gas cooling device according to the present invention. FIG. 1 (a) is a plan view, FIG. 1 (b) is a front view, and FIG. FIG. 11 is an enlarged plan view, in which members having the same functions as those of the conventional example are denoted by the same reference numerals, and redundant description will be omitted.
[0010]
The illustrated EGR pipe 3 has a large number of bent portions 3c and is piped between the exhaust manifold 1 and the intake port 2 of the intake manifold. One end 3a side of the EGR pipe 3 is exhausted through a flange joint 6. The other end 3b side of the manifold 1 is connected to the intake port 2 of the intake manifold via an EGR valve 7 respectively.
[0011]
Except for a part of the exhaust manifold 1 side, the EGR pipe 3 is formed of an inner pipe 31 and an outer pipe 32 so as to be double inner and outer. The exhaust manifold 1 side of the inner pipe 31 is provided to extend to the flange joint 6. At the same time, a bellows tube 5 for assembling errors and vibration absorption is connected in the middle. Both ends of the outer tube 32 are fixed to the outer peripheral surface of the inner tube 31 by drawing or the like.
[0012]
A part of the cooling water for cooling the engine is circulated between the inner and outer pipes 31 and 32 to cool the EGR gas flowing through the inner pipe 31, and the cooling water is introduced between the inner and outer pipes 31 and 32. A cooling water introduction port 11 is provided near the bent portion 3c of the EGR pipe 3. In particular, in the case of the figure, a short tubular cooling water inlet 11 is provided at two places, a bent part 3c on the most upstream side (the exhaust manifold 1 side) of the EGR pipe 3 and a bent part 3c on the upper side. A communication pipe or the like (not shown) is connected to the short tubular cooling water inlet 11 to introduce a part of the cooling water for cooling the engine between the inner and outer pipes 31 and 32. In the drawing, reference numeral 12 denotes a cooling water discharge port for discharging the cooling water introduced between the inner and outer pipes 31 and 32. The discharge port 12 is also formed in a short tube in the present embodiment, and the short tube discharge port is formed. In FIG. 12, the engine cooling water is returned to a passage or a pipe via a communication pipe or the like not shown in the drawing. Reference numeral 13 denotes a short tubular air outlet for discharging air remaining between the inner and outer tubes 31 and 32.
[0013]
In addition, although the material etc. of the member which comprises the said EGR gas cooling apparatus are suitable, Preferably it is good to use metals with good corrosion resistance and heat resistance, such as stainless steel, and especially as the inner and outer tubes 31 and 32 which comprise the EGR pipe 3. When SUS436 or the like is used, not only corrosion resistance and heat resistance are good, but also thermal conductivity is good and cooling efficiency can be improved. As a processing method, for example, if a hydroform processing is used, a hollow double EGR pipe having a bent portion can be easily manufactured.
[0014]
In the above configuration, when the engine not shown in the drawing is operated in a state where the cooling water is circulated between the inner and outer pipes 31 and 32 of the EGR pipe 3, a part of the exhaust gas discharged into the exhaust manifold 1 becomes EGR. The gas flows into the inner pipe 31 of the EGR pipe 3 as gas, and moves through the bellows pipe 5 in the inner pipe 31 in the double pipe portion of the inner and outer pipes 31 and 32. At this time, the EGR gas flowing through the inner pipe 31 is sequentially cooled by the cooling water flowing between the inner and outer pipes 31 and 32. In the present invention, particularly, in the present invention, cooling water is introduced near the bent portion 3c of the EGR pipe 3. By providing the port 11, cooling can be performed efficiently.
[0015]
That is, the EGR gas flowing in the inner pipe 31 changes direction while sequentially colliding with the inner surface of the inner pipe 31 when passing through the bent portion. For this reason, the bent portion of the inner tube 31 becomes a so-called heat pool and the temperature rises sharply. However, the cooling water can be efficiently cooled by providing a cooling water inlet near the bent portion. In particular, the temperature rise of the most upstream bent portion of the EGR pipe, that is, the bent portion closest to the exhaust manifold 1 side, is the steepest, and if a cooling water inlet is provided near the bent portion, cooling can be performed more efficiently. Can be. Further, in the EGR pipe having a plurality of bent portions as in the above embodiment, a cooling water inlet is provided near any two or more or all of the bent portions. In this case, cooling can be performed more efficiently.
[0016]
The EGR gas cooled as described above is guided from the other end 3b side of the EGR pipe 3 to the intake port 2 of the intake manifold via the EGR valve 7, and together with the air from the air cleaner not shown in the drawing, the above-described intake manifold And is guided to the combustion chamber of the engine for combustion.
[0017]
【The invention's effect】
As described above, in the EGR gas cooling device according to the present invention, at least a part of the EGR pipe which is bent between the exhaust manifold and the intake manifold of the engine is formed to be double inside and outside including the above-mentioned bent portion. A cooling water inlet for introducing cooling water between the pipes is provided near the bent portion, so that the EGR gas flowing through the EGR pipe can be efficiently cooled. There is an effect that an EGR gas cooling device excellent in the above can be provided at low cost.
[Brief description of the drawings]
FIG. 1A is a plan view showing an embodiment of an EGR gas cooling device according to the present invention.
(B) is the front view.
FIG. 2 is a partially cutaway enlarged plan view of an EGR pipe in the EGR gas cooling device.
FIG. 3A is a plan view showing an example of an arrangement configuration of a conventional EGR gas cooling device.
(B) is the front view.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Exhaust manifold 2 Intake port 3 EGR pipe 3a One end 3b Other end 3c Bent portion 31 Inner tube 32 Outer tube 11 Cooling water inlet 12 Water distribution tube 13 Air outlet

Claims (3)

エンジンの排気口から排出された排気ガスの一部をＥＧＲガスとしてエンジンの吸気口に再循環させるＥＧＲ配管を、上記エンジンの排気マニホールドと吸気マニホールドとの間に屈曲させて配管すると共に、上記ＥＧＲ配管の少なくとも一部を上記屈曲部をも含めて内外二重に形成し、その内外管間に冷却水を導入して上記内管内を流れるＥＧＲガスを冷却するための冷却水導入口を上記屈曲部の近傍に設けたことを特徴とするＥＧＲガス冷却装置。An EGR pipe for recirculating a part of the exhaust gas discharged from the exhaust port of the engine as an EGR gas to the intake port of the engine is bent between the exhaust manifold of the engine and the intake manifold, and the EGR pipe is bent. At least a part of the pipe is formed to be double inner and outer including the bent portion, and the cooling water inlet for cooling the EGR gas flowing in the inner pipe by introducing cooling water between the inner and outer pipes is bent. An EGR gas cooling device provided near a section. 前記の冷却水導入口をＥＧＲ配管の最も上流側の屈曲部の近傍に設けたことを特徴とする請求項１記載のＥＧＲガス冷却装置。The EGR gas cooling device according to claim 1, wherein the cooling water inlet is provided near a bent portion on the most upstream side of the EGR pipe. 前記の冷却水導入口をＥＧＲ配管の複数個の屈曲部の近傍に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 device according to claim 1, wherein the cooling water inlet is provided near a plurality of bent portions of the EGR pipe.
JP2002285056A 2002-09-30 2002-09-30 Egr gas cooling system Pending JP2004116495A (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100465422C (en) * 2005-01-13 2009-03-04 丰田自动车株式会社 Controller of internal combustion engine
WO2011145136A1 (en) * 2010-05-17 2011-11-24 株式会社ヒロテック Metal pipe and method for producing same
CN103711613A (en) * 2012-10-09 2014-04-09 现代自动车株式会社 Exhaust gas supply pipe for egr cooler of vehicle
EP2354521A3 (en) * 2010-01-27 2014-07-23 Audi AG Motor vehicle with an exhaust system
WO2021160411A1 (en) 2020-02-14 2021-08-19 Daimler Ag Internal combustion engine for a motor vehicle, in particular for a car

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100465422C (en) * 2005-01-13 2009-03-04 丰田自动车株式会社 Controller of internal combustion engine
EP2354521A3 (en) * 2010-01-27 2014-07-23 Audi AG Motor vehicle with an exhaust system
WO2011145136A1 (en) * 2010-05-17 2011-11-24 株式会社ヒロテック Metal pipe and method for producing same
JPWO2011145136A1 (en) * 2010-05-17 2013-07-22 株式会社ヒロテック Metal pipe and manufacturing method thereof
CN103711613A (en) * 2012-10-09 2014-04-09 现代自动车株式会社 Exhaust gas supply pipe for egr cooler of vehicle
JP2014077430A (en) * 2012-10-09 2014-05-01 Hyundai Motor Company Co Ltd Exhaust gas supply pipe for egr cooler of vehicle
WO2021160411A1 (en) 2020-02-14 2021-08-19 Daimler Ag Internal combustion engine for a motor vehicle, in particular for a car
DE102020000965A1 (en) 2020-02-14 2021-08-19 Daimler Ag Internal combustion engine for a motor vehicle, in particular for a motor vehicle

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