JP2001304049A - Multiple pipe type egr gas cooling device - Google Patents
Multiple pipe type egr gas cooling deviceInfo
- Publication number
- JP2001304049A JP2001304049A JP2000365286A JP2000365286A JP2001304049A JP 2001304049 A JP2001304049 A JP 2001304049A JP 2000365286 A JP2000365286 A JP 2000365286A JP 2000365286 A JP2000365286 A JP 2000365286A JP 2001304049 A JP2001304049 A JP 2001304049A
- Authority
- JP
- Japan
- Prior art keywords
- tube
- heat transfer
- transfer tube
- section
- egr gas
- 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
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
- F28F1/02—Tubular elements of cross-section which is non-circular
- F28F1/04—Tubular elements of cross-section which is non-circular polygonal, e.g. rectangular
-
- 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
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D7/16—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation
- F28D7/163—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation with conduit assemblies having a particular shape, e.g. square or annular; with assemblies of conduits having different geometrical features; with multiple groups of conduits connected in series or parallel and arranged inside common casing
- F28D7/1653—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation with conduit assemblies having a particular shape, e.g. square or annular; with assemblies of conduits having different geometrical features; with multiple groups of conduits connected in series or parallel and arranged inside common casing the conduit assemblies having a square or rectangular shape
-
- 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
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D7/16—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation
- F28D7/1684—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation the conduits having a non-circular cross-section
-
- 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
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、エンジンの冷却液
を冷媒とするＥＧＲガスの多管式冷却装置に関するもの
である。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-tube cooling system for an EGR gas using an engine coolant as a refrigerant.
【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 of an exhaust system,
To return to the intake system of the engine and add it to the mixture,
EGR (Exhaust Gas Recircula)
Tion: exhaust gas recirculation). EGR is NOx
(Nitrogen oxides) generation, pump loss reduction, heat radiation loss to the cooling fluid due to lowering of combustion gas temperature, increase in specific heat ratio due to changes in working gas amount and composition, and reduction in cycle efficiency Since many effects such as improvement can be obtained, it is considered to be an effective method for improving exhaust gas purification and thermal efficiency of an engine.
【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。[0003] However, when the temperature of the EGR gas increases and the amount of the EGR gas increases, the heat effect of the EGR gas causes the EGR gas to increase.
It has been recognized that the durability of the valve may deteriorate, leading to premature breakage, the need for a water-cooled structure to prevent this, and the reduction in fuel efficiency due to the decrease in charging efficiency due to the rise in intake air temperature. I have. To avoid this,
A device that cools the EGR gas with a coolant of the engine or the like is used. As this device, a multi-tube heat exchanger is generally used.
【０００４】この場合に利用される多管式の熱交換器
は、図５、図６、図７にその一例を示すごとく、両端部
に冷却媒体流入口Ｐ１および冷却媒体流出口Ｐ２を設け
た胴管（シェル）２１内部において、直管で構成された
伝熱管群２２の両端部が板金製のチューブシート２３に
ろう付けにより固定され、一方、チューブシート２３は
その外周端部を胴管２１の内壁にろう付けにより固着さ
れ、前記胴管２１の一方の端部にはＥＧＲガスの流入口
Ｇ１が設けられた端部キャップ（ボンネット）２４が固
着され、また他方の端部にはＥＧＲガスの流出口Ｇ２が
設けられた端部キャップ２４が固着された構成となし、
かつ前記端部キャップ２４のガス流入口Ｇ１およびガス
流出口Ｇ２の外側開口端部に締結用フランジ２５が外嵌
固着された構造となっている。２６は伝熱管群２２を保
持するバッフルプレートである。The multi-tube heat exchanger used in this case is provided with a cooling medium inlet P1 and a cooling medium outlet P2 at both ends, as shown in FIGS. Inside the body tube (shell) 21, both ends of the heat transfer tube group 22 formed of straight tubes are fixed to a sheet metal tube sheet 23 by brazing, while the tube sheet 23 has its outer peripheral end attached to the body tube 21. An end cap (bonnet) 24 provided with an EGR gas inlet G1 is fixed to one end of the body tube 21 by brazing, and EGR gas is fixed to the other end of the body tube 21. The end cap 24 provided with the outflow port G2 is fixed.
Further, a fastening flange 25 is externally fitted and fixed to the outer opening ends of the gas inlet G1 and the gas outlet G2 of the end cap 24. Reference numeral 26 denotes a baffle plate that holds the heat transfer tube group 22.
【０００５】[0005]
【発明が解決しようとする課題】上記した従来の多管式
熱交換器は、図面からも明らかなごとく胴管２１および
伝熱管群２２には断面円形の管体が用いられるのが一般
的である。しかるに、胴管および伝熱管に断面円形の管
体を用いた多管式熱交換器の場合は、断面円形の胴管内
に配列する伝熱管群２２と隣接する各伝熱管の外表面間
隔は図７（ａ）に示す四角配置や図７（ｂ）に示す三角
配置のいずれも胴管内に伝熱管を配管できない空間（デ
ッドスペース）Ｓが多く生じ、胴管径が大きい割には伝
熱管をあまり多く収納できないために伝熱面積を増大で
きず熱交換性能を向上できないという問題があった。In the above-mentioned conventional multi-tube heat exchanger, as is apparent from the drawings, a tube having a circular cross section is generally used for the body tube 21 and the heat transfer tube group 22. is there. However, in the case of a multi-tube heat exchanger using a tubular body having a circular cross section for the body tube and the heat transfer tube, the outer surface interval between the heat transfer tube group 22 arranged in the body tube having a circular cross section and the adjacent heat transfer tube is shown in FIG. In both the square arrangement shown in FIG. 7 (a) and the triangular arrangement shown in FIG. 7 (b), a large space (dead space) S in which a heat transfer tube cannot be piped occurs in the body tube. There was a problem that the heat transfer area could not be increased and the heat exchange performance could not be improved because too much storage was not possible.
【０００６】本発明は上記した従来の多管式熱交換器の
問題を解決するためになされたもので、従来の円形断面
の胴管、伝熱管に替えて、矩形断面の胴管および伝熱管
を用いることによって、デッドスペースを減少させて伝
熱管設置スペースを拡大し、伝熱管収納本数を増大して
熱交換性能の向上をはかった多管式ＥＧＲガス冷却装置
を提供しようとするものである。SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems of the conventional multi-tubular heat exchanger. Instead of the conventional circular tube and heat transfer tube having a circular cross section, the present invention has a rectangular cross-sectional body tube and heat transfer tube. The present invention intends to provide a multi-tube EGR gas cooling device in which the dead space is reduced, the space for installing the heat transfer tubes is increased, the number of heat transfer tubes accommodated is increased, and the heat exchange performance is improved. .
【０００７】[0007]
【課題を解決するための手段】本発明は上記課題を解決
する手段として、胴管および伝熱管の断面形状を矩形と
することによって前記のデッドスペースを少なくして伝
熱管群の本数を増加し伝熱面積の増大をはかったもの
で、その要旨は、多くは端部付近に冷却媒体流入口およ
び冷却媒体流出口が設けられた胴管の両端部付近に固定
されたチューブシートに伝熱管群が固着配列され、さら
に前記胴管の両端部付近には端部キャップが固着され、
また前記端部キャップにはＥＧＲガスの流入口と流出口
が設けられ、前記端部キャップのガス流入口および流出
口の外側開口端部に締結用フランジが外嵌固着された構
造の多管式ＥＧＲガス冷却装置において、前記胴管およ
び伝熱管群が矩形断面の管体で構成されかつろう付けに
て組立てられていることを特徴とするものである。ま
た、前記伝熱管群は断面正方形の管体もしくは断面長方
形の管体で構成されていることを特徴し、さらに前記胴
管内に伝熱管群を保持するステーを有することを特徴と
するものである。According to the present invention, as a means for solving the above problems, the dead space is reduced by increasing the cross-sectional shape of the body tube and the heat transfer tube to increase the number of heat transfer tube groups. The purpose of the heat transfer area is to increase the heat transfer pipe group, and in many cases the heat transfer pipe group is attached to a tube sheet fixed near both ends of the body pipe provided with a cooling medium inlet and a cooling medium outlet near the end. Are fixedly arranged, and end caps are fixed near both ends of the body tube,
The end cap is provided with an inlet and an outlet for EGR gas, and a multi-tube type structure having a structure in which a fastening flange is externally fitted and fixed to the outer opening ends of the gas inlet and the outlet of the end cap. In the EGR gas cooling device, the body tube and the heat transfer tube group are formed of a tube having a rectangular cross section, and are assembled by brazing. Further, the heat transfer tube group is characterized by being constituted by a tube having a square cross section or a tube having a rectangular cross section, and further comprising a stay for holding the heat transfer tube group in the body tube. .
【０００８】本発明において、胴管を矩形断面の管体で
構成したのは、胴管が円形断面（円筒）の管体である
と、内部の冷却水が加振されて胴管内壁面に衝突して発
生する衝撃波が当該胴管内壁面の曲率中心に向って進み
伝熱管群に集中することとなって、特に胴管内の最外周
（内壁面近傍）に配置された伝熱管がその衝撃波によっ
て破損する可能性が高いのに対し、矩形断面の胴管の場
合は内壁面が平坦であるため前記衝撃波が胴管内壁面の
曲率中心に向って進むことがなく、したがって衝撃波が
伝熱管群に集中するという現象がなくなるので伝熱管が
その衝撃波によって破損されることがないためである。
また胴管および伝熱管群が断面正方形や断面長方形の矩
形断面であると、デッドスペースをより少なくして伝熱
管群の本数をさらに増加することができるという利点が
ある。In the present invention, the body tube is constituted by a tube having a rectangular cross section. If the body tube is a tube having a circular cross section (cylindrical), the cooling water inside is vibrated and collides with the inner wall surface of the body tube. The generated shock wave is directed toward the center of curvature of the inner wall surface of the body tube and concentrates on the heat transfer tube group. In particular, the heat transfer tube arranged at the outermost periphery (near the inner wall surface) in the body tube is damaged by the shock wave. On the other hand, in the case of a tubular body having a rectangular cross section, the inner wall surface is flat, so that the shock wave does not travel toward the center of curvature of the inner wall surface of the body tube, so that the shock wave concentrates on the heat transfer tube group. This is because the heat transfer tube is not damaged by the shock wave.
Further, when the body tube and the heat transfer tube group have a rectangular cross section of a square cross section or a rectangular cross section, there is an advantage that the dead space can be reduced and the number of heat transfer tube groups can be further increased.
【０００９】このように胴管および伝熱管群を断面正方
形や断面長方形の矩形断面の管体で構成した場合には、
デッドスペースを最小にできるため胴管内に収納する伝
熱管の本数を増加させることができ、伝熱面積が増大す
ることによって熱交換性能が高められて交換効率をより
一層向上できる。なお矩形断面の管体で構成した胴管と
円形断面の伝熱管群との組合わせも可能であるが、デッ
ドスペースを考慮すると胴管および伝熱管群共に矩形断
面の管体で構成した方がより好ましい。In the case where the body tube and the heat transfer tube group are formed of a tube having a rectangular cross section having a square or rectangular cross section,
Since the dead space can be minimized, the number of heat transfer tubes housed in the body tube can be increased, and the heat transfer area can be increased to enhance the heat exchange performance and further improve the exchange efficiency. It is also possible to combine a body tube with a rectangular cross section and a heat transfer tube group with a circular cross section, but considering the dead space, it is better to configure both the body tube and the heat transfer tube group with a tube body with a rectangular cross section. More preferred.
【００１０】また、胴管内の伝熱管群を保持するステー
を配設することにより、伝熱管群の振動を抑制でき、耐
振性を向上できる。なおステーと伝熱管群は一般にろう
付けにて接合される。Further, by providing a stay for holding the heat transfer tube group in the body tube, the vibration of the heat transfer tube group can be suppressed, and the vibration resistance can be improved. The stay and the heat transfer tube group are generally joined by brazing.
【００１１】[0011]
【発明の実施の形態】図１は本発明の一実施例装置を示
す縦断正面図、図２は同上装置における他の胴管の断面
形状を示す縦断正面図、図３は同上装置における他の伝
熱管の一部を示す斜視図、図４は同上装置における伝熱
管の保持手段を示す一部縦断側面図であり、１、１１は
胴管、２は伝熱管群、２−１は断面正方形の伝熱管、２
−２は断面長方形の伝熱管、３はステーである。DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a longitudinal sectional front view showing an apparatus according to an embodiment of the present invention, FIG. 2 is a longitudinal sectional front view showing a sectional shape of another body tube in the above apparatus, and FIG. FIG. 4 is a perspective view showing a part of the heat transfer tube, and FIG. 4 is a partially longitudinal side view showing a holding means of the heat transfer tube in the above apparatus. Heat transfer tubes, 2
Reference numeral -2 denotes a heat transfer tube having a rectangular cross section, and reference numeral 3 denotes a stay.
【００１２】すなわち、図１に示す多管式ＥＧＲガス冷
却装置は、胴管を断面正方形の胴管１とし、かつ該胴管
１の両端部に配設したチューブシート（図５に示す符号
２３に相当）間に配列固着される伝熱管群２を断面正方
形の伝熱管２−１で構成したもので、各伝熱管２−１は
チューブシートにろう付けまたは溶接される。上記のよ
うに断面正方形の胴管１内に断面正方形の伝熱管２−１
で構成した伝熱管群２を設けた場合には、従来の断面円
形の胴管および伝熱管に比べ胴管１内のデッドスペース
を最小にすることができるので、ほぼ同一容積の胴管１
に収容し得る伝熱管２−１の本数は断面円形の胴管およ
び伝熱管を用いた冷却装置より多くすることができる。
上記図１に示す冷却装置における伝熱管群を構成する伝
熱管としては、断面正方形の伝熱管２−１に替えて、図
３に示す断面長方形の伝熱管２−２としてもよい。That is, in the multi-pipe EGR gas cooling apparatus shown in FIG. 1, the body pipe is a body pipe 1 having a square cross section, and a tube sheet (reference numeral 23 shown in FIG. 5) is provided at both ends of the body pipe 1. The heat transfer tube group 2 arranged and fixed between the heat transfer tube groups is constituted by heat transfer tubes 2-1 having a square cross section, and each heat transfer tube 2-1 is brazed or welded to a tube sheet. Heat transfer tube 2-1 having a square cross section in body tube 1 having a square cross section as described above
Is provided, the dead space in the body tube 1 can be minimized as compared with the conventional body tube and heat transfer tube having a circular cross section.
The number of heat transfer tubes 2-1 that can be accommodated in the cooling device can be larger than that of a cooling device using a body tube and a heat transfer tube having a circular cross section.
As the heat transfer tubes constituting the heat transfer tube group in the cooling device shown in FIG. 1, the heat transfer tubes 2-1 having a rectangular cross section shown in FIG. 3 may be used instead of the heat transfer tubes 2-1 having a square cross section.
【００１３】また、本発明装置における伝熱管の保持手
段としては、図４に示すごとくステー３を用いる。この
ステー３と各伝熱管２−１、２−２、およびステー３と
胴管１は、それぞれろう付けにて接合されている。As a means for holding the heat transfer tube in the apparatus of the present invention, a stay 3 is used as shown in FIG. The stay 3 and the heat transfer tubes 2-1 and 2-2, and the stay 3 and the body tube 1 are respectively joined by brazing.
【００１４】[0014]
【発明の効果】本発明に係る多管式ＥＧＲガス冷却装置
は上記のごとく、胴管および伝熱管群を断面正方形や断
面長方形の矩形断面の管体で構成したことにより、胴管
内におけるデッドスペースを最小にできる結果、胴管内
に収納する伝熱管の本数を増加することができ、伝熱面
積の増大によって熱交換性能が高められて交換効率を一
層向上できるという効果が得られる。また、胴管の内壁
面が平坦であることによって衝撃波が伝熱管群に集中す
ることがなく、併せて胴管内の伝熱管群を保持するステ
ーをろう付けにて配設することにより、伝熱管群の振動
を抑制でき、耐振性を向上できるという効果が得られ
る。さらに、上記した伝熱面積の増大により熱交換性能
を高めることができるという効果が得られることによっ
て、伝熱管の長さを短かくできると共に、胴管の縮小も
可能となり、多管式ＥＧＲガス冷却装置の小型、軽量化
およびコスト低減がはかられるという優れた効果を奏す
る。As described above, the multi-pipe EGR gas cooling apparatus according to the present invention has a dead space in the body pipe because the body pipe and the heat transfer pipe group are constituted by a tube having a rectangular cross section having a square or rectangular cross section. As a result, the number of heat transfer tubes housed in the body tube can be increased, and the heat transfer performance is enhanced by the increase in the heat transfer area, so that the exchange efficiency can be further improved. In addition, since the inner wall surface of the body tube is flat, the shock wave does not concentrate on the heat transfer tube group, and the stay for holding the heat transfer tube group in the body tube is brazed, so that the heat transfer tube is provided. The effect of suppressing vibration of the group and improving vibration resistance can be obtained. Furthermore, the effect that the heat exchange performance can be enhanced by increasing the heat transfer area described above can be obtained, so that the length of the heat transfer tube can be shortened and the body tube can be reduced, so that the multi-tube EGR gas can be obtained. There is an excellent effect that the size, weight and cost of the cooling device can be reduced.
【図１】本発明の一実施例装置を示す縦断正面図であ
る。FIG. 1 is a vertical sectional front view showing an apparatus according to an embodiment of the present invention.
【図２】同上装置における他の胴管の断面形状を示す縦
断正面図である。FIG. 2 is a longitudinal sectional front view showing a cross-sectional shape of another body tube in the same device.
【図３】同上装置における他の伝熱管の一部を示す斜視
図である。FIG. 3 is a perspective view showing a part of another heat transfer tube in the same device.
【図４】同上装置における伝熱管の保持手段を示す一部
縦断側面図である。FIG. 4 is a partially longitudinal side view showing a heat transfer tube holding means in the same device.
【図５】本発明の対象とする従来の多管式のＥＧＲガス
冷却装置の一例を中央部を省略して示す横断平面図であ
る。FIG. 5 is a cross-sectional plan view showing an example of a conventional multi-tube EGR gas cooling device to which the present invention is applied, omitting a central portion.
【図６】図６ａ−ａ線上の断面図である。FIG. 6 is a sectional view taken along the line in FIG. 6a-a.
【図７】断面円形の胴管内に配列する伝熱管群と隣接す
る各伝熱管の外表面間隔を示す図で、（ａ）は四角配置
を示す図、（ｂ）は三角配置を示す図である。FIGS. 7A and 7B are diagrams showing a heat transfer tube group arranged in a body tube having a circular cross section and an outer surface interval of each adjacent heat transfer tube, wherein FIG. 7A is a diagram showing a square arrangement, and FIG. is there.
１、１１ 胴管 ２ 伝熱管群 ２−１ 断面正方形の伝熱管 ２−２ 断面長方形の伝熱管 ３ ステー 1, 11 Body tube 2 Heat transfer tube group 2-1 Heat transfer tube with square cross section 2-2 Heat transfer tube with rectangular cross section 3 Stay
Claims (4)
体流出口が設けられた胴管の両端部付近に固定されたチ
ューブシートに伝熱管群が固着配列され、さらに前記胴
管の両端部付近には端部キャップが固着され、また前記
端部キャップにはＥＧＲガスの流入口と流出口が設けら
れ、前記端部キャップのガス流入口および流出口の外側
開口端部に締結用フランジが外嵌固着された構造の多管
式ＥＧＲガス冷却装置において、前記胴管および伝熱管
群が矩形断面の管体で構成されかつろう付けにて組立て
られていることを特徴とする多管式ＥＧＲガス冷却装
置。1. A heat transfer tube group is fixedly arranged on a tube sheet fixed near both ends of a body tube provided with a cooling medium inlet and a cooling medium outlet near an end, and furthermore, both ends of the body tube An end cap is fixed in the vicinity, and an inlet and an outlet for EGR gas are provided in the end cap, and a fastening flange is provided at an outer opening end of the gas inlet and the outlet of the end cap. A multi-pipe EGR gas cooling apparatus having an externally fitted and fixed structure, wherein the body pipe and the heat transfer pipe group are formed of a pipe having a rectangular cross section and are assembled by brazing. Gas cooling device.
されていることを特徴とする請求項１記載の多管式ＥＧ
Ｒガス冷却装置。2. The multi-tube EG according to claim 1, wherein said heat transfer tube group is constituted by a tube having a square cross section.
R gas cooling device.
されていることを特徴とする請求項１記載の多管式ＥＧ
Ｒガス冷却装置。3. The multi-tube EG according to claim 1, wherein said heat transfer tube group is constituted by a tube having a rectangular cross section.
R gas cooling device.
を有することを特徴とする請求項１乃至３のうちいずれ
か１項記載の多管式ＥＧＲガス冷却装置。4. The multi-tube EGR gas cooling apparatus according to claim 1, further comprising a stay for holding a heat transfer tube group in the body tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000365286A JP2001304049A (en) | 2000-02-16 | 2000-11-30 | Multiple pipe type egr gas cooling device |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000-38626 | 2000-02-16 | ||
| JP2000038626 | 2000-02-16 | ||
| JP2000365286A JP2001304049A (en) | 2000-02-16 | 2000-11-30 | Multiple pipe type egr gas cooling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2001304049A true JP2001304049A (en) | 2001-10-31 |
Family
ID=26585506
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000365286A Pending JP2001304049A (en) | 2000-02-16 | 2000-11-30 | Multiple pipe type egr gas cooling device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2001304049A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7743816B2 (en) | 2002-05-15 | 2010-06-29 | Behr Gmbh & Co. Kg | Switchable waste gas exchanger |
| US20130269663A1 (en) * | 2010-12-22 | 2013-10-17 | Denso Corporation | Exhaust-gas heat exchange device |
| CN103557725A (en) * | 2013-11-08 | 2014-02-05 | 宁波佳比佳工贸有限公司 | Efficient flue heat exchanger |
| CN103742301A (en) * | 2013-12-24 | 2014-04-23 | 广西科技大学 | Production method of internal combustion engine exhaust gas recirculation cooler |
| CN103742300A (en) * | 2013-12-24 | 2014-04-23 | 广西科技大学 | Production method of internal combustion engine exhaust gas recirculation cooler |
| CN111795594A (en) * | 2019-04-02 | 2020-10-20 | 马勒国际有限公司 | Heat exchanger |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6139285U (en) * | 1984-08-16 | 1986-03-12 | 三菱重工業株式会社 | Heat exchanger |
| JPH1113554A (en) * | 1997-06-25 | 1999-01-19 | Calsonic Corp | Egr gas cooling device |
-
2000
- 2000-11-30 JP JP2000365286A patent/JP2001304049A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6139285U (en) * | 1984-08-16 | 1986-03-12 | 三菱重工業株式会社 | Heat exchanger |
| JPH1113554A (en) * | 1997-06-25 | 1999-01-19 | Calsonic Corp | Egr gas cooling device |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7743816B2 (en) | 2002-05-15 | 2010-06-29 | Behr Gmbh & Co. Kg | Switchable waste gas exchanger |
| US8365813B2 (en) | 2002-05-15 | 2013-02-05 | Behr Gmbh & Co. Kg | Switchable waste gas exchanger |
| US20130269663A1 (en) * | 2010-12-22 | 2013-10-17 | Denso Corporation | Exhaust-gas heat exchange device |
| CN103557725A (en) * | 2013-11-08 | 2014-02-05 | 宁波佳比佳工贸有限公司 | Efficient flue heat exchanger |
| CN103742301A (en) * | 2013-12-24 | 2014-04-23 | 广西科技大学 | Production method of internal combustion engine exhaust gas recirculation cooler |
| CN103742300A (en) * | 2013-12-24 | 2014-04-23 | 广西科技大学 | Production method of internal combustion engine exhaust gas recirculation cooler |
| CN111795594A (en) * | 2019-04-02 | 2020-10-20 | 马勒国际有限公司 | Heat exchanger |
| CN111795594B (en) * | 2019-04-02 | 2022-03-08 | 马勒国际有限公司 | Heat exchanger |
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