JP7192271B2 - Exhaust purification device and vehicle - Google Patents

Exhaust purification device and vehicle Download PDF

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JP7192271B2
JP7192271B2 JP2018125056A JP2018125056A JP7192271B2 JP 7192271 B2 JP7192271 B2 JP 7192271B2 JP 2018125056 A JP2018125056 A JP 2018125056A JP 2018125056 A JP2018125056 A JP 2018125056A JP 7192271 B2 JP7192271 B2 JP 7192271B2
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housing
surface portion
curved surface
exhaust gas
partition member
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JP2020002912A (en
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功 大原
直 水上
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Isuzu Motors Ltd
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters

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Description

本開示は、排気浄化装置および車両に関する。 TECHNICAL FIELD The present disclosure relates to exhaust purification devices and vehicles.

従来、内燃機関から排出される排ガスを浄化する触媒を筐体内に設けた排気浄化装置が知られている（例えば特許文献１参照）。 2. Description of the Related Art Conventionally, there is known an exhaust emission control device in which a catalyst for purifying exhaust gas emitted from an internal combustion engine is provided in a housing (see, for example, Patent Document 1).

特開２０１４－２１３２８９号公報JP 2014-213289 A

上述した筐体の形状によっては、筐体内に流入した排ガスに渦が発生し、この渦が原因となって異音が発生するおそれがある。 Depending on the shape of the housing described above, the exhaust gas that has flowed into the housing may vortex, and the vortex may cause abnormal noise.

本開示の目的は、異音の発生を抑制することができる排気浄化装置および車両を提供することである。 An object of the present disclosure is to provide an exhaust purification device and a vehicle that can suppress the generation of abnormal noise.

本開示の一態様に係る排気浄化装置は、排ガスを第１方向から筐体内に流入させる流入口、および、前記筐体内に流入した排ガスを前記第１方向と異なる第２方向から前記筐体外へ流出させる流出口が前記筐体に形成され、前記筐体内に排ガス浄化体が設けられた排気浄化装置であって、前記筐体内に流入した排ガスを前記流出口へ導く誘導流路が形成されるように前記筐体内の空間を区画する板状の仕切部材を有し、前記筐体は、前記筐体の外部方向に向かって膨出した曲面部と、前記曲面部に対して直交するように設けられた、対向する２つの側壁面部と、を有し、前記流出口は、前記２つの側壁面部のいずれかにおいて、前記曲面部との境界付近に形成されており、前記仕切部材は、前記曲面部の延在方向に沿って設けられており、前記仕切部材における対向する２つの端部は、前記筐体の内壁面に固定され、前記２つの端部以外の端部は、前記流出口が設けられた前記側壁面部に近接または接触しており、前記仕切部材における前記曲面部に対向する部分が前記曲面部の湾曲方向とは逆方向に湾曲することにより、前記誘導流路が略円筒形状に形成されている。


An exhaust purification device according to an aspect of the present disclosure includes an inlet for allowing exhaust gas to flow into a housing from a first direction, and an exhaust gas flowing into the housing from a second direction different from the first direction to the outside of the housing. An exhaust purification device in which an outflow port for outflow is formed in the housing, and an exhaust gas purifying body is provided in the housing, and a guide flow path is formed for guiding the exhaust gas flowing into the housing to the outflow port. The housing has a plate-shaped partition member that partitions the space in the housing in such a manner that the housing has a curved surface portion that bulges toward the outside of the housing and a curved surface portion that is orthogonal to the curved surface portion. and two side wall surface portions facing each other provided, wherein the outflow port is formed near a boundary with the curved surface portion in one of the two side wall surface portions, and the partition member comprises the Two opposing ends of the partition member are fixed to the inner wall surface of the housing, and ends other than the two ends are provided along the extending direction of the curved surface portion. is provided in the vicinity of or in contact with the side wall surface portion provided with, and the portion of the partition member facing the curved surface portion is curved in a direction opposite to the curved direction of the curved surface portion, so that the guide flow path is substantially cylindrical formed into a shape.


本開示の一態様に係る車両は、上記排気浄化装置を備える。 A vehicle according to an aspect of the present disclosure includes the above exhaust purification device.

本開示によれば、異音の発生を抑制することができる。 According to the present disclosure, it is possible to suppress the generation of abnormal noise.

本開示の実施の形態に係る排気浄化装置の構成の一例を示す模式図Schematic diagram showing an example of a configuration of an exhaust purification device according to an embodiment of the present disclosure 本開示の実施の形態に係る第２筐体の構成の一例を示す斜視図A perspective view showing an example of a configuration of a second housing according to an embodiment of the present disclosure 本開示の実施の形態に係る第２筐体の構成の一例を示す斜視図A perspective view showing an example of a configuration of a second housing according to an embodiment of the present disclosure 本開示の実施の形態に係る第２筐体の構成の一例を示す斜視図A perspective view showing an example of a configuration of a second housing according to an embodiment of the present disclosure

以下、本開示の実施の形態について、図面を参照して詳細に説明する。 Hereinafter, embodiments of the present disclosure will be described in detail with reference to the drawings.

まず、本開示の実施の形態に係る排気浄化装置２の構成について、図１を用いて説明する。図１は、本実施の形態の排気浄化装置２の構成の一例を示す模式図である。 First, the configuration of an exhaust purification device 2 according to an embodiment of the present disclosure will be described using FIG. FIG. 1 is a schematic diagram showing an example of the configuration of an exhaust purification device 2 of this embodiment.

図１に示す排気浄化装置２は、内燃機関（図示略）から排出される排ガスを浄化する装置である。排気浄化装置２は、例えば、車両、作業機械、または発電装置などに搭載される。 An exhaust purification device 2 shown in FIG. 1 is a device for purifying exhaust gas discharged from an internal combustion engine (not shown). The exhaust purification device 2 is mounted on, for example, a vehicle, a working machine, or a power generator.

図１に示すように、排気浄化装置２は、第１筐体２ａおよび第２筐体２ｂを有する。第２筐体２ｂは、第１筐体２ａに対して着脱可能である。 As shown in FIG. 1, the exhaust purification device 2 has a first housing 2a and a second housing 2b. The second housing 2b is detachable from the first housing 2a.

第１筐体２ａの内部には、排ガス浄化体３が設けられている。排ガス浄化体３は、例えば、排ガス中の有害物質を除去する触媒またはフィルタなどである。 An exhaust gas purifier 3 is provided inside the first housing 2a. The exhaust gas purifier 3 is, for example, a catalyst or filter that removes harmful substances in the exhaust gas.

第１筐体２ａには、貫通孔４ａ、４ｂが形成されている。 Through holes 4a and 4b are formed in the first housing 2a.

貫通孔４ａには、上流側排気管１が接続されている。貫通孔４ａは、上流側排気管１を流れる排ガスを、Ｘ方向から第１筐体２ａ内に流入させる。なお、貫通孔４ａは「流入口」の一例に相当し、Ｘ方向は「第１方向」の一例に相当する。 The upstream side exhaust pipe 1 is connected to the through hole 4a. The through hole 4a allows the exhaust gas flowing through the upstream side exhaust pipe 1 to flow into the first housing 2a from the X direction. The through hole 4a corresponds to an example of the "inlet", and the X direction corresponds to an example of the "first direction".

第１筐体２ａ内に流入した排ガスは、排ガス浄化体３を通過した後、貫通孔４ｂを介して、第２筐体２ｂへ流入する。 The exhaust gas that has flowed into the first housing 2a passes through the exhaust gas purifier 3 and then flows into the second housing 2b through the through hole 4b.

第２筐体２ｂには、貫通孔５が形成されている。貫通孔５は、第２筐体２ｂへ流入した排ガスを、Ｚ方向から第２筐体２ｂ外（例えば、図４に示す下流側排気管１３）へ流出させる。なお、貫通孔５は「流出口」の一例に相当し、Ｚ方向は「第２方向」の一例に相当する。 A through hole 5 is formed in the second housing 2b. The through hole 5 allows the exhaust gas that has flowed into the second housing 2b to flow out of the second housing 2b (for example, the downstream side exhaust pipe 13 shown in FIG. 4) in the Z direction. The through-hole 5 corresponds to an example of the "outlet", and the Z direction corresponds to an example of the "second direction".

次に、第２筐体２ｂの構成について、図２～図４を用いて説明する。図２～図４は、第２筐体２ｂの構成の一例を示す斜視図である。 Next, the configuration of the second housing 2b will be described with reference to FIGS. 2 to 4. FIG. 2 to 4 are perspective views showing an example of the configuration of the second housing 2b.

第２筐体２ｂは、一面が開口しており、側壁面部６、７、曲面部９、および立壁面部１０を有する。第２筐体２ｂは、第２筐体２ｂの開口面と第１筐体２ａの貫通孔４ｂとが連通するように、第１筐体２ａに取り付けられる。 The second housing 2 b is open on one side and has side wall portions 6 and 7 , a curved surface portion 9 and an upright wall portion 10 . The second housing 2b is attached to the first housing 2a so that the opening surface of the second housing 2b communicates with the through hole 4b of the first housing 2a.

曲面部９は、第２筐体２ｂの外部方向に向かって膨出している。側壁面部６、７は、互いに対向しており、曲面部９に対して直交するように設けられている。立壁面部１０は、曲面部９の一部分である。 The curved surface portion 9 protrudes toward the outside of the second housing 2b. The side wall portions 6 and 7 face each other and are provided so as to be perpendicular to the curved portion 9 . The upright wall portion 10 is a portion of the curved surface portion 9 .

側壁面部６には、曲面部９との境界付近に貫通孔５が形成されている。この貫通孔５には、図４に示すように、下流側排気管１３が接続されている。 A through hole 5 is formed in the sidewall surface portion 6 near the boundary with the curved surface portion 9 . A downstream exhaust pipe 13 is connected to the through hole 5 as shown in FIG.

第２筐体２ｂの内部には、誘導流路８が形成されるように第２筐体２ｂ内の空間を区画する仕切部材１１が設けられる。誘導流路８は、第２筐体２ｂ内に流入した排ガスを貫通孔５へ導く流路である。 A partition member 11 is provided inside the second housing 2b to partition the space in the second housing 2b so that the guide flow path 8 is formed. The guide channel 8 is a channel that guides the exhaust gas that has flowed into the second housing 2 b to the through hole 5 .

仕切部材１１は、板状部材である。仕切部材１１は、曲面部９の延在方向に沿って設けられている。 The partition member 11 is a plate-like member. The partition member 11 is provided along the extending direction of the curved surface portion 9 .

仕切部材１１において、曲面部９に対向する部分は湾曲している。湾曲部分の曲率は、誘導流路８の流路面積が、圧力損失が生じない大きさとなるように決定される。 A portion of the partition member 11 facing the curved surface portion 9 is curved. The curvature of the curved portion is determined so that the flow area of the guiding flow path 8 is such that no pressure loss occurs.

仕切部材１１の端部１４ａは、第２筐体２ｂの内壁面に直接固定されている。また、端部１４ａに対向する端部１４ｂは、繋ぎ部材１２を介して第２筐体２ｂの内壁面に固定されている。 The end portion 14a of the partition member 11 is directly fixed to the inner wall surface of the second housing 2b. An end portion 14b facing the end portion 14a is fixed to the inner wall surface of the second housing 2b via a connecting member 12. As shown in FIG.

具体的には、端部１４ａは、曲面部９の内壁面に溶着されている。また、端部１４ｂは、繋ぎ部材１２に溶着されており、繋ぎ部材１２は、立壁面部１０の内壁面に溶着されている。 Specifically, the end portion 14 a is welded to the inner wall surface of the curved surface portion 9 . The end portion 14 b is welded to the connecting member 12 , and the connecting member 12 is welded to the inner wall surface of the upright wall portion 10 .

また、仕切部材１１の端部１４ｃは、側壁面部６に近接している。なお、端部１４ｃは、側壁面部６に接触してもよい。 Also, the end portion 14c of the partition member 11 is close to the side wall surface portion 6 . Note that the end portion 14 c may contact the side wall surface portion 6 .

次に、本実施の形態の排気浄化装置２の作用効果について説明する。 Next, the effects of the exhaust purification device 2 of this embodiment will be described.

仮に、図２～図４に示した第２筐体２ｂにおいて、仕切部材１１が設けられておらず、誘導流路８が形成されていない場合、以下の問題がある。すなわち、第２筐体２ｂ内に流入した排ガスは、第２筐体２ｂ内の隅部に当たった後、曲面部９の内壁面に沿って貫通孔５に向かって流れる。このとき、排ガスが渦状となることで、異音が発生するという問題がある。 If the partition member 11 is not provided in the second housing 2b shown in FIGS. 2 to 4 and the guiding flow path 8 is not formed, the following problems arise. That is, the exhaust gas that has flowed into the second housing 2b flows toward the through hole 5 along the inner wall surface of the curved surface portion 9 after hitting the corners in the second housing 2b. At this time, there is a problem that abnormal noise is generated because the exhaust gas becomes swirl.

これに対し、本実施の形態の排気浄化装置２は、誘導流路８が形成されるように第２筐体２ｂ内の空間を区画する仕切部材１１を有することを特徴とする。これにより、第２筐体２ｂに流入した排ガスは、第２筐体２ｂ内の隅部に当たった後、誘導流路８を流れる。このとき、排ガスの流れ方向が規制されるので、排ガスの渦の発生を抑制できる。その結果、異音の発生を抑制することができる。 On the other hand, the exhaust purification device 2 of the present embodiment is characterized by having a partition member 11 that partitions the space inside the second housing 2b so that the guide flow path 8 is formed. As a result, the exhaust gas that has flowed into the second housing 2b flows through the guide channel 8 after hitting the corners in the second housing 2b. At this time, since the flow direction of the exhaust gas is regulated, it is possible to suppress the generation of the vortex of the exhaust gas. As a result, it is possible to suppress the generation of noise.

以上、本開示の実施の形態について詳述したが、本開示は、上述した実施の形態に限定されるものではなく、本開示の趣旨を逸脱しない範囲で、適宜変形して実施することが可能である。以下、各変形例について説明する。 The embodiments of the present disclosure have been described in detail above, but the present disclosure is not limited to the above-described embodiments, and can be modified as appropriate without departing from the scope of the present disclosure. is. Each modification will be described below.

［変形例１］
実施の形態では、第１筐体２ａと第２筐体２ｂとが別体である場合を例に挙げて説明したが、これに限定されない。例えば、第１筐体２ａと第２筐体２ｂとは、一体的に形成されてもよい。なお、第１筐体２ａと第２筐体２ｂとを別体とした場合、仕切部材１１を設置し易いという利点がある。 [Modification 1]
In the embodiment, the case where the first housing 2a and the second housing 2b are separate bodies has been described as an example, but the present invention is not limited to this. For example, the first housing 2a and the second housing 2b may be integrally formed. If the first housing 2a and the second housing 2b are separated, there is an advantage that the partition member 11 can be easily installed.

［変形例２］
実施の形態では、第２筐体２ｂが曲面部９を有する場合を例に挙げて説明したが、これに限定されない。例えば、第２筐体２ｂは、曲面部９の代わりに、曲折部を有してもよい。その場合、第２筐体２ｂの全体形状は、例えば、立方体状や直方体状であってもよい。 [Modification 2]
In the embodiment, the case where the second housing 2b has the curved surface portion 9 has been described as an example, but the present invention is not limited to this. For example, the second housing 2b may have a bent portion instead of the curved surface portion 9. FIG. In that case, the overall shape of the second housing 2b may be, for example, a cubic shape or a rectangular parallelepiped shape.

［変形例３］
実施の形態では、仕切部材１１が湾曲した形状である場合を例に挙げて説明したが、これに限定されない。例えば、仕切部材１１は、曲折した形状でもよいし、湾曲も曲折もしていない平面状であってもよい。なお、仕切部材１１が湾曲した形状である場合、熱応力の点で耐久性に優れるという利点がある。 [Modification 3]
In the embodiment, the case where the partition member 11 has a curved shape has been described as an example, but the present invention is not limited to this. For example, the partition member 11 may have a bent shape, or may have a planar shape that is neither curved nor bent. In addition, when the partition member 11 has a curved shape, there is an advantage that the durability is excellent in terms of thermal stress.

［変形例４］
実施の形態では、仕切部材１１が繋ぎ部材１２を介して第２筐体２ｂの内壁面に固定される場合を例に挙げて説明したが、これに限定されない。例えば、仕切部材１１の端部１４ｂは、直接、立壁面部１０の内壁面に固定（例えば溶着）されてもよい。 [Modification 4]
In the embodiment, the case where the partition member 11 is fixed to the inner wall surface of the second housing 2b via the connecting member 12 has been described as an example, but the present invention is not limited to this. For example, the end portion 14b of the partition member 11 may be directly fixed (for example, welded) to the inner wall surface of the vertical wall portion 10 .

以上、各変形例について説明した。なお、各変形例は、適宜組み合わせてもよい。 Each modification has been described above. In addition, you may combine each modification suitably.

本開示の排気浄化装置および車両は、内燃機関から排出される排ガスを浄化する技術全般に有用である。 The exhaust purification device and vehicle according to the present disclosure are useful in general techniques for purifying exhaust gas emitted from an internal combustion engine.

１ 上流側排気管
２ 排気浄化装置
２ａ 第１筐体
２ｂ 第２筐体
３ 排ガス浄化体
４ａ、４ｂ、５ 貫通孔
６、７ 側壁面部
８ 誘導流路
９ 曲面部
１０ 立壁面部
１１ 仕切部材
１２ 繋ぎ部材
１３ 下流側排気管
１４ａ、１４ｂ、１４ｃ 端部 Reference Signs List 1 upstream exhaust pipe 2 exhaust purification device 2a first housing 2b second housing 3 exhaust gas purifying body 4a, 4b, 5 through hole 6, 7 side wall surface portion 8 guide passage 9 curved surface portion 10 vertical wall portion 11 partition member 12 Connecting member 13 Downstream exhaust pipe 14a, 14b, 14c End

Claims (3)

排ガスを第１方向から筐体内に流入させる流入口、および、前記筐体内に流入した排ガスを前記第１方向と異なる第２方向から前記筐体外へ流出させる流出口が前記筐体に形成され、前記筐体内に排ガス浄化体が設けられた排気浄化装置であって、
前記筐体内に流入した排ガスを前記流出口へ導く誘導流路が形成されるように前記筐体内の空間を区画する板状の仕切部材を有し、
前記筐体は、前記筐体の外部方向に向かって膨出した曲面部と、前記曲面部に対して直交するように設けられた、対向する２つの側壁面部と、を有し、
前記流出口は、前記２つの側壁面部のいずれかにおいて、前記曲面部との境界付近に形成されており、
前記仕切部材は、前記曲面部の延在方向に沿って設けられており、
前記仕切部材における対向する２つの端部は、前記筐体の内壁面に固定され、前記２つの端部以外の端部は、前記流出口が設けられた前記側壁面部に近接または接触しており、
前記仕切部材における前記曲面部に対向する部分が前記曲面部の湾曲方向とは逆方向に湾曲することにより、前記誘導流路が略円筒形状に形成されている、
排気浄化装置。 An inlet through which exhaust gas flows into the housing from a first direction, and an outlet through which the exhaust gas that has flowed into the housing flows out of the housing from a second direction different from the first direction are formed in the housing, An exhaust purification device having an exhaust gas purifying body provided in the housing,
a plate-shaped partition member that partitions a space in the housing so as to form a guide flow path that guides the exhaust gas that has flowed into the housing to the outflow port ;
The housing has a curved surface portion that bulges toward the outside of the housing, and two opposing side wall surface portions provided so as to be perpendicular to the curved surface portion,
The outflow port is formed near a boundary with the curved surface portion in one of the two side wall surface portions,
The partition member is provided along the extending direction of the curved surface portion,
Two opposing ends of the partition member are fixed to the inner wall surface of the housing, and ends other than the two ends are close to or in contact with the side wall surface portion provided with the outlet. ,
A portion of the partition member facing the curved surface portion is curved in a direction opposite to a curved direction of the curved surface portion, so that the guide channel is formed in a substantially cylindrical shape.
Exhaust purification device. 前記筐体は、
前記流入口を有し、前記排ガス浄化体が設けられた第１筐体と、
前記流出口、前記曲面部、および前記側壁面部を有し、前記仕切部材が設けられた、前記第１筐体に対して着脱可能である第２筐体と、を有する、
請求項１に記載の排気浄化装置。 The housing is
a first housing having the inlet and provided with the exhaust gas purifier;
a second housing having the outflow port, the curved surface portion, and the side wall surface portion, and provided with the partition member, the second housing being attachable to and detachable from the first housing;
The exhaust purification device according to claim 1 . 請求項１または２に記載の排気浄化装置を備えた車両。 A vehicle comprising the exhaust purification device according to claim 1 or 2 .
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Citations (4)

* Cited by examiner, † Cited by third party
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WO2006080441A1 (en) 2005-01-28 2006-08-03 Hiraoka Manufacturing Co., Ltd. Muffler for small engine
JP2011241705A (en) 2010-05-17 2011-12-01 Toyota Industries Corp Exhaust gas cleaning system
JP2012193719A (en) 2011-03-18 2012-10-11 Komatsu Ltd Exhaust gas purification device
JP2015117623A (en) 2013-12-18 2015-06-25 日野自動車株式会社 Exhaust emission control device

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5164762B2 (en) * 2008-09-19 2013-03-21 ヤンマー株式会社 Exhaust gas purification device
JP5898868B2 (en) * 2011-07-05 2016-04-06 東京濾器株式会社 Exhaust gas purification device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006080441A1 (en) 2005-01-28 2006-08-03 Hiraoka Manufacturing Co., Ltd. Muffler for small engine
JP2011241705A (en) 2010-05-17 2011-12-01 Toyota Industries Corp Exhaust gas cleaning system
JP2012193719A (en) 2011-03-18 2012-10-11 Komatsu Ltd Exhaust gas purification device
JP2015117623A (en) 2013-12-18 2015-06-25 日野自動車株式会社 Exhaust emission control device

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