WO2020153142A1 - Élément de refroidissement d'échappement - Google Patents

Élément de refroidissement d'échappement Download PDF

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Publication number
WO2020153142A1
WO2020153142A1 PCT/JP2020/000561 JP2020000561W WO2020153142A1 WO 2020153142 A1 WO2020153142 A1 WO 2020153142A1 JP 2020000561 W JP2020000561 W JP 2020000561W WO 2020153142 A1 WO2020153142 A1 WO 2020153142A1
Authority
WO
WIPO (PCT)
Prior art keywords
divided body
cooling member
exhaust
exhaust gas
main body
Prior art date
Application number
PCT/JP2020/000561
Other languages
English (en)
Japanese (ja)
Inventor
一秀 高田
隼人 齋藤
雄紀 池田
Original Assignee
いすゞ自動車株式会社
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 いすゞ自動車株式会社 filed Critical いすゞ自動車株式会社
Priority to CN202080009978.8A priority Critical patent/CN113366205A/zh
Publication of WO2020153142A1 publication Critical patent/WO2020153142A1/fr

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/08—Other arrangements or adaptations of exhaust conduits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/18—Construction facilitating manufacture, assembly, or disassembly
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/20—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having flared outlets, e.g. of fish-tail shape

Definitions

  • the present disclosure relates to an exhaust cooling member attached to an end of an exhaust pipe.
  • Some vehicles such as trucks have an exhaust cooling member attached to the end of the exhaust pipe through which the exhaust gas of the engine flows to cool the exhaust gas with air.
  • the exhaust cooling member has a cavity through which the exhaust gas flows and an inflow port into which the air flows, and cools the exhaust gas with the inflowing air.
  • the present disclosure has been made in view of these points, and an object thereof is to effectively cool exhaust gas by an exhaust cooling member.
  • an exhaust cooling member that is attached to an end portion of an exhaust pipe and cools exhaust gas
  • the main body having a cavity in which the exhaust gas flows, and the main body
  • An inflow portion which is provided on the side of the first end connected to the exhaust pipe and allows air to flow into the cavity, and a flow, which is provided on the side of the second end of the main body and through which the exhaust gas and the air flow out.
  • an outflow portion having an outlet formed therein, wherein one of the upper wall and the lower wall of the main body portion extends outward more than the other at the other end side to provide an exhaust cooling member.
  • the end of the upper wall of the main body may be located outside the end of the lower wall on the other end side.
  • the main body part may include an upper divided body forming the upper wall and a lower divided body forming the lower wall, and the upper divided body may cover the lower divided body.
  • the lateral width of the upper divided body may be increased from the first end side toward the second end side.
  • the main body portion includes a first divided body forming one of the upper wall and the lower wall, and a second divided body forming the other of the upper wall and the lower wall, The divided body may cover the second divided body.
  • the width of the first divided body may be increased from the first end portion side toward the second end portion side.
  • the width of the edge of the first divided body may be wider than the width of the edge of the second divided body.
  • the edge of the first divided body may be located outside the edge of the second divided body.
  • FIG. 1 is a schematic diagram for explaining a part of the configuration of a vehicle 1 to which an exhaust cooling member 10 according to an embodiment of the present disclosure is attached.
  • FIG. 2 is a diagram for explaining the configuration of the exhaust cooling member 10.
  • FIG. 3 is a diagram for explaining the configuration of the exhaust cooling member 10.
  • FIG. 4 is a schematic diagram for explaining the flow of exhaust gas and air in the exhaust cooling member 10.
  • FIG. 1 is a schematic diagram for explaining a part of a configuration of a vehicle 1 to which an exhaust cooling member 10 according to an embodiment is attached.
  • the exhaust cooling member 10 is attached to the rear end portion 4 of the exhaust pipe 3 of the vehicle 1 (here, a truck). Specifically, the exhaust cooling member 10 is attached to the exhaust port of the exhaust pipe 3.
  • Exhaust pipe 3 is connected to the engine of vehicle 1, and the exhaust gas of the engine flows.
  • a purification device 5 for purifying exhaust gas is provided in the middle of the exhaust pipe 3.
  • the purification device 5 includes, for example, a DPF (Diesel Particulate Filter) that collects particulate matter in the exhaust gas and an SCR (Selective Catalytic Reduction) that reduces NOx in the exhaust gas.
  • the purification device 5 is fixed to the side frame 8 of the vehicle 1 via a bracket 9.
  • the exhaust cooling member 10 cools the exhaust gas flowing through the exhaust pipe 3 with air and causes the cooled exhaust gas to flow out to the atmosphere. Specifically, the exhaust cooling member 10 cools the exhaust gas that has passed through the purification device 5 with the taken-in air.
  • FIGS. 2 to 4. 2 and 3 are views for explaining the configuration of the exhaust cooling member 10.
  • FIG. 4 is a schematic diagram for explaining the flow of exhaust gas and air in the exhaust cooling member 10.
  • the flow of exhaust gas is shown by a dashed arrow
  • the flow of air is shown by a dashed-dotted arrow.
  • the exhaust cooling member 10 has a main body portion 20, a fixing portion 30, an inflow portion 40, and an outflow portion 50.
  • the body portion 20 is formed in a tubular shape.
  • one end side (an example of the first end portion) of the main body portion 20 is connected to the exhaust pipe 3 via the fixing portion 30.
  • the other end of the main body 20 (an example of the second end) is an opening communicating with the atmosphere.
  • a cavity 21 is formed inside the main body 20, as shown in FIG. 2, as shown in FIG. 2, a cavity 21 is formed inside the main body 20, as shown in FIG. 2, a cavity 21 is formed inside the main body 20, as shown in FIG. 2, a cavity 21 is formed inside the main body 20, as shown in FIG. 2, a cavity 21 is formed inside the main body 20, as shown in FIG. 2, a cavity 21 is formed inside the main body 20, as shown in FIG. 2, a cavity 21 is formed inside the main body 20, as shown in FIG. 2, a cavity 21 is formed inside the main body 20, as shown in FIG. 2, a cavity 21 is formed
  • the cavity 21 is a space formed along the axial direction of the main body 20.
  • the exhaust gas that has passed through the rear end portion 4 of the exhaust pipe 3 flows through the hollow portion 21. Specifically, the exhaust gas flows in from one end side of the body portion 20, and the exhaust gas flows out from the other end side of the body portion 20. Air flows into the hollow portion 21 from the inflow portion 40, and the air is mixed with the exhaust gas, so that the temperature of the exhaust gas is lowered (cooled).
  • the cavity 21 becomes wider from one end of the main body 20 toward the other end. As a result, the flow velocity of the exhaust gas flowing through the cavity 21 gradually decreases and flows out so as to diffuse.
  • the main body 20 is vertically divided into two parts by an upper divided body 22 and a lower divided body 24 as shown in FIG. That is, the upper divided body 22 and the lower divided body 24 are combined to form the main body portion 20.
  • one of the upper divided body 22 and the lower divided body 24 may constitute an example of the first divided body, and the other of the upper divided body 22 and the lower divided body 24 may constitute an example of the second divided body. ..
  • the upper divided body 22 may form an example of the first divided body
  • the lower divided body 24 may form an example of the second divided body.
  • the upper divided body 22 forms the upper side of the main body 20 as shown in FIG. 4, and the lower divided body 24 forms the lower side of the main body 20.
  • the upper divided body 22 forms an upper wall of the main body 20 and a part of both side walls
  • the lower divided body 24 forms a lower wall of the main body 20 and a part of both side walls. Is made.
  • the upper divided body 22 is formed in a size that covers the lower divided body 24 from above.
  • the lower divided body 24 is formed shorter than the upper divided body 22.
  • the upper divided body 22 extends outward from the lower divided body 24 on the other end side of the main body portion 20. That is, the end portion 22a of the upper divided body 22 is located outside the end portion 24a of the lower divided body 24 in the flow direction of the exhaust gas. Therefore, air further flows in from the periphery of the end 24a of the lower divided body 24 and mixes with the exhaust gas. Specifically, air flows into the space (see FIG. 2) surrounded by both side walls and the upper wall of the upper divided body 22 from around the end 24a, and the air is mixed with the exhaust gas in the space. Then, the exhaust gas is further cooled. Further, since the lower divided body 24 is shorter than the upper divided body 22, the weight of the main body portion 20 can be reduced.
  • Width of the upper divided body 22 increases from one end side to the other end side, as shown in FIG. Specifically, the other end sides of the both side walls of the upper divided body 22 are located outside the both side walls of the lower divided body 24. As a result, the amount of air flowing in from the periphery of the end 24a of the lower divided body 24 increases, and the exhaust gas can be cooled more effectively.
  • the fixing portion 30 is a portion that connects the main body portion 20 to the rear end portion 4 of the exhaust pipe 3, as shown in FIG.
  • the fixed part 30 is formed in a tubular shape.
  • One end portion 32 of the fixed portion 30 in the axial direction is fixed to the rear end portion 4. Since the inner diameter of the fixed portion 30 is substantially the same as the outer diameter of the rear end portion 4, there is no gap between the one end portion 32 and the rear end portion 4.
  • the fixed portion 30 is connected to the main body portion 20 via plate-shaped brackets 32a, 32b, 32c. Specifically, the fixing portion 30 is fixed to the outer peripheral surface of the upper divided body 22 by a bracket 32a. Further, the fixed portion 30 is fixed to the outer peripheral surface of the lower divided body 24 by brackets 32b and 32c.
  • the brackets 32a, 32b, 32c are provided radially when viewed from the fixed portion 30.
  • the inflow part 40 is provided on one end side in the axial direction of the main body part 20 as shown in FIG. 3, and allows air to flow into the cavity part 21 (see FIG. 4).
  • the inflow portion 40 is provided in the large diameter portion 41 in which the inner diameter of the main body portion 20 is larger than the outer diameter of the fixed portion 30.
  • An opening 42 (FIG. 4) is formed at the end of the large diameter portion 41.
  • the area around the fixed portion 30 in the opening 42 serves as the inflow portion 40.
  • Air around the main body 20 flows into the cavity 21 via the inflow portion 40.
  • the air flowing into the cavity 21 mixes with the exhaust gas flowing in the cavity 21 and lowers (cools) the temperature of the exhaust gas.
  • the outflow section 50 is provided on the other end side of the main body section 20 in the axial direction as shown in FIG. 3, and allows the exhaust gas and the air flowing in the cavity section 21 to flow out (see FIG. 4).
  • the outflow portion 50 is formed with an outflow port 52 (FIG. 3) through which exhaust gas passes. The exhaust gas and the air mixed in the cavity 21 flow out to the atmosphere through the outlet 52.
  • the main body portion 20 is not formed straight, and as shown in FIG. 4, the other end side of the upper divided body 22 of the upper divided body 22 and the lower divided body 24 faces downward. Has been formed. Specifically, the upper wall is bent so that the other end side of the upper wall of the upper divided body 22 faces downward. As a result, the outlet 52 also faces downward, and the exhaust gas flowing through the hollow portion 21 flows out downward via the outlet 52.
  • the lateral width of the upper divided body 22 increases from one end side toward the other end side. That is, the width of the upper divided body 22 on the outflow portion 50 side is larger than the width of the upper divided body 22 on the inflow portion 40 side. As a result, the exhaust gas is easily diffused by the upper split body 22 in a wide area below.
  • the width increases from the narrowed portion between the inflow portion 40 and the outflow portion 50 toward the outflow portion 50, but the invention is not limited to this.
  • the width may increase from the inflow portion 40 toward the outflow portion 50 without the above-mentioned narrowed portion.
  • the installation space of the main body 20 in the vertical direction can be made smaller than in the case where the entire main body 20 is obliquely arranged ( (See FIG. 1).
  • the exhaust gas flowing through the exhaust pipe 3 flows into the cavity 21 of the exhaust cooling member 10 connected to the rear end portion 4 of the exhaust pipe 3.
  • the air around the exhaust cooling member 10 flows into the hollow portion 21 from the inflow portion 40 so as to be drawn in by the negative pressure in the hollow portion 21.
  • the exhaust gas is cooled by mixing the air flowing into the cavity 21 with the exhaust gas (first cooling).
  • the exhaust gas cooled by the air flowing in from the inflow part 40 is further cooled by being mixed with the air flowing in from the end 24a of the lower split body 24 (second cooling). After that, the exhaust gas and the air flow out from the outflow portion 50 so as to diffuse downward.
  • the exhaust cooling member 10 of the above-described embodiment includes a main body portion 20 in which a cavity portion 21 through which exhaust gas flows is formed, an inflow portion 40 provided on one end side of the main body portion 20 for inflowing air, and another main body portion 20. And an outflow portion 50 provided with an outflow port 52 which is provided on the end side and through which exhaust gas and air flow out.
  • the upper divided body 22 (upper wall) of the main body 20 extends outward than the lower divided body 24 (lower wall) at the other end side. That is, the end 22 a of the upper divided body 22 is located outside the end 24 a of the lower divided body 24.
  • the air from around the end portion 24a of the lower split body 24 flows in, so that a large amount of air is introduced into the cavity portion 21. Inflow (taken in).
  • the exhaust gas mixes with a large amount of air and then flows out from the end 22a of the upper divided body 22. That is, the exhaust gas is effectively cooled before flowing out from the exhaust cooling member 10.
  • the upper divided body 22 extends outward on the other end side than the lower divided body 24, but the invention is not limited to this.
  • the lower divided body 24 may extend outward on the other end side than the upper divided body 22.
  • the exhaust gas is cooled by a large amount of air and then flows out from the end portion 24a of the lower divided body 24. That is, if one of the upper divided body 22 (upper wall) and the lower divided body 24 (lower wall) of the main body portion 20 extends outward more than the other at the other end side, the exhaust gas is effective. The effect that it can be cooled effectively is exhibited.
  • the other end side of the upper divided body 22 is bent downward, but the present invention is not limited to this.
  • the other end side of the upper divided body 22 may be formed straight.
  • the present invention has been described above using the embodiments, the technical scope of the present invention is not limited to the scope described in the above embodiments, and various modifications and changes are possible within the scope of the gist thereof. is there.
  • the specific embodiment of device distribution/integration is not limited to the above embodiment, and all or part of the device may be functionally or physically distributed/integrated in arbitrary units.
  • You can Further, a new embodiment that occurs due to an arbitrary combination of a plurality of embodiments is also included in the embodiment of the present invention. The effect of the new embodiment produced by the combination also has the effect of the original embodiment.
  • the present invention has an effect that exhaust gas can be effectively cooled, and is useful as an exhaust cooling member or the like.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust Silencers (AREA)
  • Exhaust Gas After Treatment (AREA)

Abstract

L'invention concerne un élément de refroidissement d'échappement (10) qui est fixé à une section d'extrémité arrière (4) d'un tuyau d'échappement (3) et qui refroidit le gaz d'échappement. Ledit élément de refroidissement d'échappement comprend: une partie corps (20) dans laquelle une section creuse (21), à travers laquelle s'écoule un gaz d'échappement, est formée; une section d'entrée (40) qui est disposée à une extrémité de la partie corps (20), au niveau de laquelle la partie corps (20) est reliée au tuyau d'échappement (3), et qui laisse passer l'écoulement d'air dans la section creuse (21); et une section de sortie (50) qui est disposée à l'autre extrémité de la partie corps (20) et dans laquelle est formée une sortie (52) à partir de laquelle le gaz d'échappement et l'écoulement d'air sont formés. L'un d'un corps fendu supérieur (22) et d'un corps fendu inférieur (24) de la partie corps (20) s'étend, au niveau de l'autre extrémité, davantage vers un côté externe que l'autre.
PCT/JP2020/000561 2019-01-23 2020-01-10 Élément de refroidissement d'échappement WO2020153142A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202080009978.8A CN113366205A (zh) 2019-01-23 2020-01-10 排气冷却构件

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2019-009573 2019-01-23
JP2019009573A JP2020118086A (ja) 2019-01-23 2019-01-23 排気冷却部材

Publications (1)

Publication Number Publication Date
WO2020153142A1 true WO2020153142A1 (fr) 2020-07-30

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JP (1) JP2020118086A (fr)
CN (1) CN113366205A (fr)
WO (1) WO2020153142A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50138411U (fr) * 1974-05-01 1975-11-14
JPH04127833U (ja) * 1991-05-14 1992-11-20 三菱自動車工業株式会社 排気装置
JP2008291685A (ja) * 2007-05-23 2008-12-04 Mitsubishi Fuso Truck & Bus Corp 排気管構造
JP2009068422A (ja) * 2007-09-13 2009-04-02 Kubota Corp 作業機のエンジン排気構造
JP2014074351A (ja) * 2012-10-03 2014-04-24 Toyota Motor Corp 排気系部材

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010127177A (ja) * 2008-11-27 2010-06-10 Matsu Shou:Kk マフラーテールの連結構造及びマフラーテール
JP6047479B2 (ja) * 2013-12-16 2016-12-21 日立建機株式会社 建設機械の排気装置
JP2017180166A (ja) * 2016-03-29 2017-10-05 いすゞ自動車株式会社 冷却装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50138411U (fr) * 1974-05-01 1975-11-14
JPH04127833U (ja) * 1991-05-14 1992-11-20 三菱自動車工業株式会社 排気装置
JP2008291685A (ja) * 2007-05-23 2008-12-04 Mitsubishi Fuso Truck & Bus Corp 排気管構造
JP2009068422A (ja) * 2007-09-13 2009-04-02 Kubota Corp 作業機のエンジン排気構造
JP2014074351A (ja) * 2012-10-03 2014-04-24 Toyota Motor Corp 排気系部材

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CN113366205A (zh) 2021-09-07
JP2020118086A (ja) 2020-08-06

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