WO2017221841A1 - Refroidisseur de gaz d'egr et système de moteur - Google Patents

Refroidisseur de gaz d'egr et système de moteur Download PDF

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Publication number
WO2017221841A1
WO2017221841A1 PCT/JP2017/022378 JP2017022378W WO2017221841A1 WO 2017221841 A1 WO2017221841 A1 WO 2017221841A1 JP 2017022378 W JP2017022378 W JP 2017022378W WO 2017221841 A1 WO2017221841 A1 WO 2017221841A1
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WO
WIPO (PCT)
Prior art keywords
egr gas
fin group
gas cooler
barrier
pair
Prior art date
Application number
PCT/JP2017/022378
Other languages
English (en)
Japanese (ja)
Inventor
隆道 細野
正憲 東田
雅英 餝
英和 岩▲崎▼
中島　隆博
和巳 庄司
和彦 高山
Original Assignee
川崎重工業株式会社
川崎エンジニアリング株式会社
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 川崎重工業株式会社, 川崎エンジニアリング株式会社 filed Critical 川崎重工業株式会社
Priority to CN201780036648.6A priority Critical patent/CN109312694B/zh
Priority to KR1020197000175A priority patent/KR102073795B1/ko
Publication of WO2017221841A1 publication Critical patent/WO2017221841A1/fr

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Classifications

    • 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
    • F02M26/02—EGR systems specially adapted for supercharged engines
    • F02M26/04—EGR systems specially adapted for supercharged engines with a single turbocharger
    • F02M26/05—High pressure loops, i.e. wherein recirculated exhaust gas is taken out from the exhaust system upstream of the turbine and reintroduced into the intake system downstream of the compressor
    • 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
    • F02M26/23—Layout, e.g. schematics
    • F02M26/28—Layout, e.g. schematics with 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
    • F02M26/13—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
    • 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
    • F02M26/35—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with means for cleaning or treating the recirculated gases, e.g. catalysts, condensate traps, particle filters or heaters
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/24—Arrangements for promoting turbulent flow of heat-exchange media, e.g. by plates
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
    • F28G9/00—Cleaning by flushing or washing, e.g. with chemical solvents

Definitions

  • the present invention relates to an EGR gas cooler and an engine system.
  • Exhaust gas recirculation (EGR) technology that recirculates exhaust gas to the engine has a large NOx emission reduction effect and is widely applied to low environmental load engines. This EGR is also effective for large marine diesel engines. However, if the temperature of the exhaust gas (EGR gas) to be recirculated is high, the supply ratio of the scavenging gas is reduced and the fuel consumption is deteriorated. Therefore, an EGR gas cooler for cooling the EGR gas is required.
  • a wet cleaning device that cleans EGR gas with a cleaning liquid is also required (see Patent Document 1).
  • a scrubber may be comprised integrally with an EGR gas cooler (refer patent document 2). Then, in the EGR gas cooler, condensed water generated by cooling the EGR gas or a cleaning liquid for cleaning the EGR gas (hereinafter referred to as “internal fluid”) flows.
  • the EGR gas cooler is of a fin tube type
  • the flow of the internal liquid in the EGR gas cooler is biased. If the flow of the internal liquid is biased, the temperature of the internal liquid at the outlet of the EGR gas cooler increases, so that the temperature of the EGR gas in contact with the internal liquid also rises, and the EGR gas may not be sufficiently cooled. is there.
  • the present invention has been made in view of the circumstances as described above, and an object thereof is to suppress the uneven flow of the internal liquid in the fin tube type EGR gas cooler.
  • An EGR gas cooler has a pair of opposing end surfaces and a pair of opposing side surfaces, and defines a flow path through which EGR gas flows downward in the vertical direction by the pair of end surfaces and the pair of side surfaces.
  • a fin group consisting of a plurality of fins positioned in the flow path and arranged in parallel to the pair of end faces, a tube that passes through the fin group and into which refrigerant flows, and along the side surface And a horizontally extending barrier.
  • the barrier may be disposed at least between a vertical upper end and a vertical lower end of the fin group.
  • the flow direction of the internal liquid flow that has been guided by the fins and reached the side surface can be changed again by the barrier, and the internal flow liquid can be returned to the center side of the flow path. Therefore, it is possible to efficiently suppress the uneven flow of the internal liquid flow.
  • the fin group includes a first-stage fin group including a plurality of fins arranged at the same vertical position and a plurality of fins arranged at the same vertical position.
  • a second-stage fin group that is vertically separated from the fin group, and the barrier may be disposed between the first-stage fin group and the second-stage fin group.
  • the barrier can be disposed between the vertical upper end and the vertical lower end of the fin group without processing the fin into a complicated shape.
  • the barrier may be positioned above the vertical upper end of the fin group in the vertical direction.
  • the flow along the side surface of the internal fluid can be suppressed upstream of the fin group. Therefore, it is possible to efficiently suppress the uneven flow of the internal liquid flow.
  • the barrier may have an inclined surface that is inclined downward in the vertical direction from the side surface toward the center of the flow path.
  • the position of the flow path center side end portion of the barrier disposed along the side surfaces is the same as the position of the central axis of the tube adjacent to the side surfaces or It may be closer to the center of the flow path than the position of the central axis.
  • the internal liquid liquid guided by the barrier goes to the center of the flow path through the tube close to the side surface. Therefore, it is possible to further suppress the uneven flow of the internal liquid flow.
  • the EGR gas cooler may further include a cleaning nozzle that is positioned vertically above the fin group and that injects a cleaning liquid downward in the vertical direction.
  • the EGR gas cooler includes the cleaning nozzle that injects the cleaning liquid, by providing the barrier as described above, it is possible to suppress the cleaning liquid (internal liquid flow) from flowing along the side surface. .
  • An engine system according to an aspect of the present invention includes the EGR gas cooler described above.
  • An engine system includes the above-described EGR gas cooler, and a scrubber that is located upstream of the EGR gas cooler and that cleans the EGR gas using a cleaning liquid.
  • the condensed water (internal fluid) generated by cooling the EGR gas is provided on the side surface by providing the barrier as described above. It can suppress flowing along.
  • FIG. 1 is a schematic configuration diagram of an engine system according to the first embodiment.
  • FIG. 2 is a cross-sectional view of the EGR gas cooler shown in FIG. 3 is a cross-sectional view taken along arrow III-III in FIG.
  • FIG. 4 is a diagram illustrating the flow of the cleaning liquid in the comparative example.
  • FIG. 5 is a diagram illustrating the flow of the cleaning liquid in the first embodiment.
  • FIG. 6 is a view showing a modification of the first embodiment.
  • FIG. 7 is a schematic configuration diagram of an engine system according to the second embodiment.
  • FIG. 1 is a schematic configuration diagram of an engine system 100 according to the first embodiment.
  • the thick dashed line indicates the flow of exhaust gas and EGR gas
  • the thick solid line indicates the flow of fresh air and scavenging gas.
  • the engine system 100 is a marine engine system, which is an engine main body 10 that is a two-stroke diesel engine, a scavenging flow passage 20 that supplies scavenging gas to the engine main body 10, and exhausted from the engine main body 10.
  • An exhaust passage 30 that discharges the exhaust gas to the outside, a supercharger 40 that is driven by the energy of the exhaust gas and boosts fresh air, and an EGR that extracts the exhaust gas from the exhaust passage 30 and supplies it to the scavenging passage 20 Unit 50.
  • the scavenging flow path 20 is provided with an air cooler 21 that cools fresh air.
  • the fresh air cooled by the air cooler 21 merges with the EGR gas supplied from the EGR unit 50 at the merge point 22.
  • the scavenging gas is generated by the combination of the fresh air and the EGR gas, and the generated scavenging gas is supplied to the engine body 10 via the water mist catcher 23. Note that the water mist catcher 23 collects condensed water or the like generated when fresh air is cooled by the air cooler 21.
  • the EGR unit 50 includes an EGR flow path 51 that connects the scavenging flow path 20 and the exhaust flow path 30, an EGR gas cooler 53 that is provided in the EGR flow path 51 and cools EGR gas, and an EGR gas cooler 53 that is provided in the EGR flow path 51. It has an EGR water mist catcher 54 that collects the condensed water and washing water that is discharged, and an EGR blower 55 that is provided in the EGR flow path 51 and boosts the exhaust gas and adjusts the flow rate of the EGR gas.
  • FIG. 2 is a cross-sectional view of the EGR gas cooler 53
  • FIG. 3 is a cross-sectional view taken along arrows III-III in FIG.
  • the upper side of the paper is the upper side in the vertical direction
  • the lower side of the paper is the lower side in the vertical direction.
  • the EGR gas cooler 53 of this embodiment is a so-called fin tube type cooler, and includes a case 61, a fin group 62, a tube 63, a barrier 64, and a cleaning nozzle 65. ,have.
  • the case 61 divides the rectangular outer frame member 70 in the horizontal sectional view, the first partition member 71 that partitions the inner space of the outer frame member 70, and the inner space of the outer frame member 70.
  • the case 61 has a pair of opposed end surfaces 73 and a pair of opposed side surfaces 74.
  • One of the end surfaces 73 is an inner surface of the first partition member 71, and the other is an inner surface of the second partition member 72.
  • the side surface 74 is a portion located between the first partition member 71 and the second partition member 72 in the inner surface of the outer frame member 70.
  • the pair of end surfaces 73 and the pair of side surfaces 74 define a rectangular channel 75 in a horizontal sectional view.
  • the EGR gas flows through the channel 75 downward in the vertical direction (downward in the drawing of FIG. 2).
  • a refrigerant supply chamber 76 is defined by the outer surface of the first partition member 71 and the inner surface of the outer frame member 70
  • a refrigerant discharge chamber 77 is defined by the outer surface of the second partition member 72 and the inner surface of the outer frame member 70. Yes.
  • the fin group 62 is located in the flow path 75 and includes a plurality of fins 80 arranged in parallel to the end face 73. As shown in FIG. 2, the fin group 62 includes a first-stage fin group 81, a second-stage fin group 82, and a third-stage fin group 83 in order from the upper side in the vertical direction. The first stage fin group 81 and the second stage fin group 82 are separated in the vertical direction, and the second stage fin group 82 and the third stage fin group 83 are separated in the vertical direction.
  • the first-stage fin group 81 is composed of a plurality of fins 80 arranged at the same vertical position.
  • the second-stage fin group 82 includes a plurality of fins 80 arranged at the same vertical position
  • the third-stage fin group 83 includes a plurality of fins arranged at the same vertical position. 80.
  • the tube 63 passes through the plurality of fins 80 constituting the fin group 62 and extends from one end surface 73 to the other end surface 73.
  • the tube 63 has one end opened to the refrigerant supply chamber 76 and the other end opened to the refrigerant discharge chamber 77.
  • the refrigerant supply room 76 and the refrigerant discharge room 77 are filled with a refrigerant for cooling the EGR gas.
  • the pressure in the refrigerant supply chamber 76 is higher than the pressure in the refrigerant discharge chamber 77. Therefore, the refrigerant flows from the refrigerant supply chamber 76 through the inside of the tube 63 toward the refrigerant discharge chamber 77.
  • the barrier 64 extends in the horizontal direction from one end surface 73 to the other end surface 73 and is disposed along both side surfaces 74.
  • the barrier 64 is located above the upper end in the vertical direction of the fin group 62 and below the lower end in the vertical direction of the fin group 62. Further, the barrier 64 is located between the upper end in the vertical direction and the lower end in the vertical direction of the fin group 62.
  • the barrier 64 is disposed between the first-stage fin group 81 and the second-stage fin group 82, and is disposed between the second-stage fin group 82 and the third-stage fin group 83. .
  • the barrier 64 of the present embodiment is a rod-shaped member having a rectangular cross section, and is fixed to the side surface 74.
  • the barrier 64 may have a shape other than a rectangular cross section, as will be described in a later-described modification.
  • the barrier 64 may be formed in a straight line shape, or may be formed in a shape other than a straight line shape such as a wave shape.
  • the barrier 64 may be divided at a plurality of locations. Further, the barrier 64 may be fixed to the fin group 62 instead of being fixed to the side surface 74.
  • the position of the end of the barrier 64 on the channel center side is closest to the side surface 74 to which the barrier 64 is fixed. It is the same as the position of the central axis of the tube 63 to be performed.
  • the flow path center side edge part of the barrier 64 may be located near the center of the flow path rather than the central axis of the tube 63 closest to the side face 74 to which the barrier 64 is fixed.
  • the cleaning nozzle 65 is positioned above the fin group 62 in the vertical direction, and sprays the cleaning liquid 101 downward in the vertical direction.
  • the cleaning nozzle 65 is attached to a cleaning pipe 66 that extends from one side surface 74 to the other side surface 74.
  • the cleaning liquid 101 is supplied from a cleaning tank (not shown) to the cleaning pipe 66 and is sprayed from the cleaning pipe 66 through the cleaning nozzle 65.
  • a plurality of cleaning pipes 66 are arranged between both end faces 73.
  • FIG. 4 is a diagram illustrating the flow of the cleaning liquid 101 in the comparative example.
  • the EGR gas cooler 53 of the comparative example does not have the barrier 64.
  • the fin group 62 is not divided in the vertical direction. That is, the fin group 62 of the comparative example does not have the first-stage fin group 81, the second-stage fin group 82, and the third-stage fin group 83.
  • the EGR gas cooler 53 of the comparative example has the same configuration as the EGR gas cooler 53 of the present embodiment.
  • the cleaning nozzle 65 provided in the EGR gas cooler 53 injects the cleaning liquid 101 downward in the vertical direction.
  • the sprayed cleaning liquid 101 changes the flow direction in a plane perpendicular to the tube 63 by contacting the tube 63.
  • the EGR gas cooler 53 does not have the fins 80, the cleaning liquid 101 in contact with the tube 63 flows along the outer peripheral surface of the tube 63, and then falls downward in the vertical direction by gravity.
  • the surface tension acts on the cleaning liquid 101 passing between the fins 80, and flows slowly between the fins 80 while the flow direction is changed by the tubes 63.
  • the cleaning liquid 101 that is guided to the side surface 74 and flows along the side surface 74 hardly comes into contact with the fins 80 and does not come into contact with the tubes 63, so that the velocity of flowing downward in the vertical direction is high.
  • the cleaning liquid 101 in the vicinity of the side surface 74 is easily drawn into the side surface, and the cleaning liquid 101 is more easily collected on the side surface 74.
  • a large amount of the cleaning liquid 101 flows along the side surface 7, and the flow of the cleaning liquid 101 is biased.
  • FIG. 5 is a view showing the flow of the cleaning liquid 101 in the EGR gas cooler 53 of the present embodiment. Also in the EGR gas cooler 53 of the present embodiment, the cleaning liquid 101 ejected downward from the cleaning nozzle 65 in the vertical direction changes in the flow direction by coming into contact with the tube 63 and easily collects on the side surface 74 having a small fluid resistance.
  • the EGR gas cooler 53 of this embodiment includes a barrier 64 provided along the side surface 74. Therefore, the cleaning liquid 101 that flows downward in the vertical direction along the side surface 74 is blocked by the barrier 64. Thereby, in this embodiment, it can suppress that the washing
  • the position of the flow path center side end portion of the barrier 64 is the central axis of the tube 63 closest to the side surface 74 to which the barrier 64 is fixed. The position is the same. Therefore, the cleaning liquid 101 blocked by the barrier 64 is guided toward the center of the flow path 75 beyond the tube 63 closest to the side surface 74. As a result, the uneven flow of the cleaning liquid 101 can be further suppressed.
  • the barrier 64 positioned above the fin group 62 in the vertical direction blocks the cleaning liquid 101 sprayed directly from the cleaning nozzle 65 onto the side surface 74 before reaching the fin group 62. be able to. Further, the barrier 64 positioned below the fin group 62 in the vertical direction can suppress the flow rate of the cleaning liquid 101 toward the vertical direction. Thereby, it can suppress that the washing
  • a notch may be formed in a predetermined portion of the fin 80, and the barrier 64 may be inserted into the notch.
  • the fin group 62 is separated in the vertical direction, and the vertical direction of the separated fin groups (first-stage fin group 81, second-stage fin group 82, third-stage fin group 83) is vertically If the barrier 64 is provided on the fin 80, it is not necessary to process the fin 80 into a complicated shape.
  • the cross-sectional shape of the barrier 64 is rectangular has been described, but the cross-sectional shape of the barrier 64 is not limited thereto.
  • the cross-sectional shape of the barrier 64 may be triangular, and may have an inclined surface 67 that is inclined downward in the vertical direction from the side surface 74 toward the center of the flow path 75. According to this configuration, the flow direction of the cleaning liquid 101 flowing along the side surface 74 can be changed to the direction toward the center of the flow path 75 by the inclined surface 67. For this reason, the uneven flow of the cleaning liquid 101 can be further suppressed.
  • the inclined surface 67 may have a shape that is curved in a cross-sectional view. Even in this case, the flow direction of the cleaning liquid 101 can be changed to a direction toward the center of the flow path 75. Further, the barrier 64 may be formed in a plate shape and may be installed so as to be inclined downward in the vertical direction from the side surface 74 toward the center of the flow path 75. Even in this case, the barrier 64 has the inclined surface 67 inclined downward in the vertical direction from the side surface 74 toward the center of the flow path 75.
  • the tube 63 is linear and extends from one end surface 73 to the other end surface 73 has been described, but the shape of the tube 63 is not limited thereto.
  • the tube 63 may have a shape in which S-shapes are connected, and may be formed so as to be folded back multiple times in the flow path 75, and one tube 63 may penetrate a plurality of locations of the fin group 62.
  • FIG. 7 is a schematic configuration diagram of an engine system 200 according to the second embodiment.
  • the engine system 200 according to the present embodiment has a scrubber 52 upstream of the EGR gas cooler 53.
  • the scrubber 52 the EGR gas is cleaned using the cleaning liquid 101. That is, the EGR gas that has been cleaned is supplied to the EGR gas cooler 53 of the present embodiment.
  • the EGR gas cooler 53 does not have the cleaning nozzle 65 for injecting the cleaning liquid 101, and does not perform cleaning of the EGR gas.
  • the EGR gas cooler 53 of the present embodiment and the EGR gas cooler 53 of the first embodiment have the same configuration.
  • the EGR gas containing a large amount of moisture by the scrubber 52 is cooled by the EGR gas cooler 53, so that a large amount of condensed water is generated in the EGR gas cooler 53.
  • This condensed water flows in the EGR gas cooler 53 in the same manner as the cleaning liquid 101 of the first embodiment. And since the EGR gas cooler 53 of this embodiment also has the barrier 64 mentioned above, it can suppress that the condensed water which flows along the side surface 74 is dammed up by the barrier 64, and that the flow of condensed water arises unevenly. it can. As a result, the EGR gas is prevented from being heated by the condensed water in the vicinity of the outlet of the EGR gas cooler 53, and the EGR gas can be sufficiently cooled.

Abstract

Un refroidisseur de gaz d'EGR conforme à un aspect de la présente invention comporte : un boîtier qui présente une paire de surfaces d'extrémité opposées et une paire de surfaces latérales opposées, et qui, au moyen de la paire de surfaces d'extrémité et de la paire de surfaces latérales, coupe un canal d'écoulement à travers lequel un gaz d'EGR s'écoule verticalement vers le bas ; un groupe d'ailettes comprenant une pluralité d'ailettes positionnées dans le canal d'écoulement et alignées parallèlement à la paire de surfaces d'extrémité ; un tube qui traverse les ailettes du groupe d'ailettes et à l'intérieur duquel s'écoule un réfrigérant ; et des barrières qui sont disposées le long des surfaces latérales et qui s'étendent horizontalement.
PCT/JP2017/022378 2016-06-21 2017-06-16 Refroidisseur de gaz d'egr et système de moteur WO2017221841A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201780036648.6A CN109312694B (zh) 2016-06-21 2017-06-16 Egr气体冷却器以及发动机系统
KR1020197000175A KR102073795B1 (ko) 2016-06-21 2017-06-16 Egr 가스 쿨러 및 엔진 시스템

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JP2016-122818 2016-06-21
JP2016122818A JP6749150B2 (ja) 2016-06-21 2016-06-21 Ｅｇｒガスクーラ及びエンジンシステム

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JP2022060659A (ja) * 2020-10-05 2022-04-15 川崎重工業株式会社 配管装置
CN113482808B (zh) * 2021-06-30 2022-11-01 东风汽车集团股份有限公司 一种egr冷却器及egr系统

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JPS54136661U (fr) * 1978-03-16 1979-09-21
JPH0771893A (ja) * 1993-06-11 1995-03-17 Atlas Copco Airpower Nv 熱交換器
JP2005331217A (ja) * 2003-06-11 2005-12-02 Usui Kokusai Sangyo Kaisha Ltd ガス冷却装置
JP2007224786A (ja) * 2006-02-22 2007-09-06 Komatsu Ltd 排気ガス再循環装置
US20150068716A1 (en) * 2012-05-15 2015-03-12 Behr Gmbh & Co. Kg Exhaust gas heat exchanger
JP2015116529A (ja) * 2013-12-18 2015-06-25 川崎重工業株式会社 スクラバーの浄水システム

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CN109312694B (zh) 2021-02-12
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