JP5361688B2 - Exhaust purification device - Google Patents

Exhaust purification device Download PDF

Info

Publication number
JP5361688B2
JP5361688B2 JP2009276537A JP2009276537A JP5361688B2 JP 5361688 B2 JP5361688 B2 JP 5361688B2 JP 2009276537 A JP2009276537 A JP 2009276537A JP 2009276537 A JP2009276537 A JP 2009276537A JP 5361688 B2 JP5361688 B2 JP 5361688B2
Authority
JP
Japan
Prior art keywords
housing
casing
exhaust
support bracket
vehicle width
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.)
Active
Application number
JP2009276537A
Other languages
Japanese (ja)
Other versions
JP2011117385A (en
Inventor
翼 藤原
弘幸 立川
Original Assignee
Udトラックス株式会社
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 Udトラックス株式会社 filed Critical Udトラックス株式会社
Priority to JP2009276537A priority Critical patent/JP5361688B2/en
Publication of JP2011117385A publication Critical patent/JP2011117385A/en
Application granted granted Critical
Publication of JP5361688B2 publication Critical patent/JP5361688B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters

Description

本発明は、ディーゼルエンジンの排気浄化装置に関する。   The present invention relates to an exhaust emission control device for a diesel engine.
ディーゼルエンジンの排気を浄化する排気浄化装置として、特許文献1に記載されるように、排気通路に上流から順にDOC(Diesel Oxidation Catalyst)、DPF(Diesel Particulate Filter)、SCR(Selective Catalyst Reduction)触媒を直列に配置したものが知られている。この排気浄化装置は、例えばトラックなどの車両については、DOC、DPF及びSCR触媒が、車両の前後方向に延びるフレームの下方に搭載される。   As an exhaust gas purification device for purifying exhaust gas from a diesel engine, as described in Patent Document 1, a DOC (Diesel Oxidation Catalyst), a DPF (Diesel Particulate Filter), and an SCR (Selective Catalyst Reduction) catalyst are sequentially provided in an exhaust passage from upstream. Those arranged in series are known. In this exhaust purification device, for example, for a vehicle such as a truck, the DOC, DPF, and SCR catalyst are mounted below a frame extending in the front-rear direction of the vehicle.
特開2004−218475号公報JP 2004-218475 A
しかしながら、近年の排気浄化に関する規制の強化に伴い、DOC、DPF及びSCR触媒を大型化する必要があることから、車両走行に必要とされる最低地上高を確保することが困難になってきている。   However, with the recent tightening of regulations on exhaust purification, it is necessary to increase the size of the DOC, DPF and SCR catalyst, and it has become difficult to ensure the minimum ground clearance required for vehicle travel. .
また、フレームの車幅外方にDOC、DPF及びSCR触媒を搭載すると、フレームの上面に架装される架装物と干渉したり、車両の外側方にはみ出してしまうおそれがある。   Further, if the DOC, DPF, and SCR catalyst are mounted on the outer side of the vehicle width of the frame, there is a possibility that they interfere with the bodywork mounted on the upper surface of the frame or protrude outside the vehicle.
そこで、本発明は以上のような問題点に鑑み、少なくともDPF及びSCR触媒の大型化に対応した排気浄化装置を提供することを目的とする。   In view of the above-described problems, an object of the present invention is to provide an exhaust emission control device that can cope with at least the enlargement of DPF and SCR catalyst.
このため、本発明に係る排気浄化装置は、排気中の粒子状物質を捕集するDPFを少なくとも収容する筒形をなしつつ、その軸線が車両前後方向に延びる第1の筐体と、車幅方向及び上方から見て、第1の筐体と少なくとも一部が重畳するように、第1の筐体の、斜め上方であって車幅外方寄り、又は、斜め下方であって車幅内方寄り、に配設され、窒素酸化物を選択還元して浄化するSCR触媒を少なくとも収容する筒形の第2の筐体と、第1の筐体と第2の筐体のうち、上方に位置する上位筐体の側方、かつ、下方に位置する下位筐体の上方において、各筐体の遠端部同士を連通する連通管と、フレームの車幅外方の外側面に部材が上下方向に延びるように固定される固定部、及び、フレームの上面から上方に突出しないように、固定部の上端から車幅外方に延びる張出部、を有する支持ブラケットと、を含んで構成され、支持ブラケットの張出部の先端が、上位筐体の上半側の外周面のうち車幅内方に臨む部分において上位筐体を支持する一方、支持ブラケットの固定部は、下位筐体を支持する。
なお、支持ブラケットの張出部の「先端」とは、その周囲も含めた範囲である。
For this reason, an exhaust emission control device according to the present invention has a first casing that extends in the vehicle front-rear direction while having a cylindrical shape that accommodates at least a DPF that collects particulate matter in the exhaust, and a vehicle width. When viewed from the direction and above, the first housing is diagonally above and outside the vehicle width, or diagonally below and within the vehicle width so that at least a part of the first housing overlaps. A cylindrical second housing that accommodates at least an SCR catalyst that is selectively reduced and purifies nitrogen oxides, and is disposed above the first housing and the second housing. On the side of the upper casing that is located and above the lower casing that is positioned below, the communication pipes that connect the far ends of each casing and the outer surface of the frame outside the vehicle width A fixed portion that is fixed so as to extend in the direction, and a fixed portion that does not protrude upward from the upper surface of the frame. And a support bracket having an overhang portion extending outward from the upper end of the vehicle width, and the tip of the overhang portion of the support bracket is inward of the upper half of the outer circumferential surface of the upper casing. While the upper casing is supported at the portion facing the, the fixing portion of the support bracket supports the lower casing.
The “tip” of the overhanging portion of the support bracket is a range including the periphery thereof.
本発明によれば、DPF及びSCR触媒をそれぞれ収容した2つの筒形筐体を、車両内方から車両外方に向けて高位になるように配設すると共に、各筐体の遠端部同士を連通する連通管を、上位筐体の側方かつ下位筐体の上方に近接して配管する。そして、支持ブラケットの張出部の先端が、上位筐体の上半側の外周面のうち車幅内方に臨む部分において上位筐体を支持する一方、支持ブラケットの固定部が、下位筐体を支持している。従って、車両のデッドスペースに排気浄化装置を収めることが可能となるので、最低地上高を確保しつつ、フレームの上面に架装される架装物との干渉や、車両の外側方へ各筐体などを突出させることなく、少なくともDPF及びSCR触媒の大型化に対応させることができる。   According to the present invention, the two cylindrical casings that respectively accommodate the DPF and the SCR catalyst are disposed so as to be higher from the inside of the vehicle toward the outside of the vehicle, and the far end portions of each casing are The communication pipe that communicates with the pipe is piped close to the side of the upper casing and above the lower casing. And while the front-end | tip of the overhang | projection part of a support bracket supports an upper housing | casing in the part which faces a vehicle width inside of the outer peripheral surface of the upper half side of an upper housing | casing, the fixing | fixed part of a support bracket is a lower housing | casing Support. Accordingly, since the exhaust purification device can be housed in the dead space of the vehicle, interference with the bodywork mounted on the upper surface of the frame and securing of each housing to the outside of the vehicle while ensuring a minimum ground clearance. It is possible to cope with at least enlargement of the DPF and the SCR catalyst without projecting the body.
本発明に係る排気浄化装置を車両前方から見た側面図The side view which looked at the exhaust emission control device which concerns on this invention from the vehicle front 本発明に係る排気浄化装置についての斜視図The perspective view about the exhaust emission control device which concerns on this invention 本発明に係る排気浄化装置を弾性支持した場合の説明図Explanatory drawing when the exhaust emission control device according to the present invention is elastically supported 図3の第2の筐体の支持についての説明図Explanatory drawing about the support of the 2nd housing | casing of FIG. 本発明に係る排気浄化装置の支持ブラケットの別形状を示す斜視図The perspective view which shows another shape of the support bracket of the exhaust gas purification apparatus which concerns on this invention
以下、添付された図面を参照して本発明を詳述する。
図1及び図2は、本発明の実施形態を示している。排気浄化装置は、例えば、ディーゼルエンジンを搭載したトラックなどの車両において、はしご形をなすフレーム10の車幅方向の一側方に取り付けられる。
Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.
1 and 2 show an embodiment of the present invention. The exhaust emission control device is attached to one side in the vehicle width direction of a ladder-shaped frame 10 in a vehicle such as a truck equipped with a diesel engine, for example.
排気浄化装置は、円筒形の第1の筐体12と、同じく円筒形の第2の筐体14と、これら筐体12、14の遠端部どうしを連結する連通管16と、フレーム10へ車両前後方向に離間して2つ固定されて、各筐体12、14を支持する支持ブラケット18と、を含んで構成される。   The exhaust purification apparatus includes a cylindrical first casing 12, a cylindrical second casing 14, a communication pipe 16 that connects the distal ends of the casings 12 and 14, and the frame 10. Two support brackets 18 that are fixed to be separated in the vehicle front-rear direction and support the casings 12 and 14 are configured.
第1の筐体12はその排気上流端部12aを車両後方側、その排気下流端部12bを車両前方側に向け、第2の筐体14はその排気上流端部14aを車両後方側、その排気下流端部14bを車両前方側に向けて配置される。すなわち、いずれの筐体12、14も、その軸線がほぼ車両前後方向に延びるように配設される。なお、第1の筐体12と第2の筐体14は、それらの軸線が相互に平行となるように配置してもよい。   The first casing 12 has its exhaust upstream end 12a facing the vehicle rear side, its exhaust downstream end 12b facing the vehicle front side, and the second casing 14 has its exhaust upstream end 14a facing the vehicle rear side, The exhaust downstream end portion 14b is disposed toward the vehicle front side. That is, both the casings 12 and 14 are disposed so that the axis thereof extends substantially in the vehicle front-rear direction. Note that the first casing 12 and the second casing 14 may be arranged such that their axes are parallel to each other.
また、第2の筐体14は、車幅方向及びフレームの上方からみたときに、第1の筐体12と少なくとも一部重畳するように、第1の筐体12より車幅外方に、且つ第1の筐体12の斜め上方に位置する。第1の筐体12にはDPFが収納され、第2の筐体14にはSCR触媒が収納される。   In addition, the second housing 14 is located outward of the vehicle width from the first housing 12 so as to at least partially overlap the first housing 12 when viewed from the vehicle width direction and from above the frame. And it is located diagonally above the first housing 12. The first housing 12 houses the DPF, and the second housing 14 houses the SCR catalyst.
連通管16は、第2の筐体14(上位筐体)の側方、かつ、第1の筐体12(下位筐体)の上方において、各筐体12、14の遠端部同士すなわち、排気下流端部12bと排気上流端部14aとを連通する。   The communication pipe 16 is located on the side of the second casing 14 (upper casing) and above the first casing 12 (lower casing). The exhaust downstream end 12b and the exhaust upstream end 14a communicate with each other.
連通管16は、直線管部16a及び接続管部16b,16cを有する構成とすることができる。直線管部16aは、第2の筐体14の側方、かつ、第1の筐体12の上方において、各筐体の軸線と平行な軸線を有して近接配置され、円形断面かつ各筐体12、14より小径の直線状中空管である。また、接続管部16b、16cは、前記遠端部同士が直線管部16aを介して連結されるように、直線管部16aと各筐体12、14の近端部同士をそれぞれ連通接続する。   The communication pipe 16 can be configured to include a straight pipe portion 16a and connecting pipe portions 16b and 16c. The straight pipe portion 16a is disposed in the vicinity of the second casing 14 on the side of the second casing 14 and above the first casing 12 with an axis parallel to the axis of each casing. It is a straight hollow tube having a smaller diameter than the bodies 12 and 14. In addition, the connecting pipe portions 16b and 16c communicate and connect the straight tube portion 16a and the near end portions of the casings 12 and 14 so that the far end portions are connected via the straight tube portion 16a. .
なお、ディーゼルエンジンの排気を車両前方に折り返して第1の筐体12の排気上流端部12a(車両後方側の端部)に流入させる排気流入管20が、この端部12aの端面を覆って連結される。また、第2の筐体14を通過した排気を、その排気下流端部14b(車両前方側の端部)から、第2の筐体14の下方を通して車両後方へ折り返して排出させる排気排出管22が、この端部14bの端面を覆って連結される。   An exhaust inflow pipe 20 that turns the exhaust of the diesel engine back to the front of the vehicle and flows into the exhaust upstream end 12a (end of the vehicle rear side) of the first housing 12 covers the end surface of the end 12a. Connected. Further, the exhaust exhaust pipe 22 that exhausts exhaust that has passed through the second housing 14 from its exhaust downstream end portion 14b (end portion on the front side of the vehicle) to the rear of the vehicle through the lower portion of the second housing 14 and exhausted. However, they are connected so as to cover the end face of the end portion 14b.
支持ブラケット18は、フレーム10の車幅外方の外側面10aに部材が上下方向に延びるように固定される固定部18a、及び、フレーム10の上面10bから上方に突出しないように、固定部18aの上端から車幅外方に延びる張出部18b、を有する。固定部18aの下部は、車幅内方かつ下方に延びてもよく、また、車幅内方かつ下方に延びた後、下方に向けて延びるようにしてもよい。   The support bracket 18 is fixed to the outer surface 10a outside the vehicle width of the frame 10 so that the member extends in the vertical direction, and the fixing portion 18a so as not to protrude upward from the upper surface 10b of the frame 10. And an overhanging portion 18b extending outward from the vehicle width. The lower portion of the fixed portion 18a may extend inward and downward in the vehicle width, or may extend downward in the vehicle width inward and downward.
支持ブラケット18の張出部18bの先端は、第2の筐体14の上半側の外周面のうち車幅内方に臨む部分において第2の筐体14を支持する。一方、支持ブラケット18の固定部18aは、第1の筐体12を支持する。固定部18aの下部が、車幅内方かつ下方に延びる場合、又は、車幅内方かつ下方に延びた後、下方に向けて延びる場合には、その延長端で第1の筐体12を支持することができる。また、各筐体12、14を安定的に支持ブラケット18で支持すべく、固定部18aの下端が、第1の筐体12の下半側の外周面のうち車幅内方に臨む部分において第1の筐体12を支持することが望ましい。なお、支持ブラケット18の固定部18aの「延長端」又は「下端」とは、延長端面又は下端面の周囲も含めた範囲とする。   The tip of the overhanging portion 18b of the support bracket 18 supports the second housing 14 at a portion of the upper half outer peripheral surface of the second housing 14 that faces the vehicle width inward. On the other hand, the fixing portion 18 a of the support bracket 18 supports the first housing 12. When the lower portion of the fixing portion 18a extends inward and downward in the vehicle width, or when extending downward in the vehicle width inward and downward, the first casing 12 is extended at the extended end. Can be supported. Further, in order to stably support each of the casings 12 and 14 with the support bracket 18, the lower end of the fixing portion 18 a is a part of the outer peripheral surface on the lower half side of the first casing 12 facing the vehicle width inward. It is desirable to support the first housing 12. The “extension end” or “lower end” of the fixing portion 18a of the support bracket 18 is a range including the periphery of the extension end surface or the lower end surface.
支持ブラケット18は、軽量化を図りつつ所要の曲げ強度を確保すべく、例えば、フランジ面を長手方向の両側に配した横断面略ハット形状の長尺材を折曲形成して得られるものであることが望ましい。この場合、支持ブラケット18をフレーム10に固定したときに、支持ブラケット18の開口がフレーム10の外側面10aに対向するようにしてもよく、これにより、固定部18aのフランジ面をフレーム10の外側面10aに当接させつつ、支持ブラケット18を安定してフレーム10に固定することができる。また、さらに曲げ強度を向上すべく、張出部18bの開口を少なくとも一部覆う補強プレート18cを張出部18bのフランジ面と接合して取り付けるようにしてもよい。   The support bracket 18 is obtained, for example, by bending a long material having a substantially hat-shaped cross section in which flange surfaces are arranged on both sides in the longitudinal direction in order to ensure the required bending strength while reducing the weight. It is desirable to be. In this case, when the support bracket 18 is fixed to the frame 10, the opening of the support bracket 18 may be opposed to the outer surface 10 a of the frame 10, so that the flange surface of the fixing portion 18 a is outside the frame 10. The support bracket 18 can be stably fixed to the frame 10 while being brought into contact with the side surface 10a. Further, in order to further improve the bending strength, a reinforcing plate 18c that covers at least a part of the opening of the overhanging portion 18b may be joined and attached to the flange surface of the overhanging portion 18b.
支持ブラケット18は、第1の筐体12及び第2の筐体14を直接支持する。すなわち、第1の筐体12については、例えば、第1の筐体12の外周面から固定部18aに向かって立設された第1のステイ12cを、固定部18aのフランジ面に固定する。第2の筐体14については、例えば、第2の筐体14の上半側の外周面のうち車幅内方に臨む面から直線管部16aに向かって立設された第2のステイ14cを、張出部18b先端下面の下方に位置する底面に固定する。   The support bracket 18 directly supports the first housing 12 and the second housing 14. That is, for the first housing 12, for example, the first stay 12c erected from the outer peripheral surface of the first housing 12 toward the fixing portion 18a is fixed to the flange surface of the fixing portion 18a. As for the second casing 14, for example, a second stay 14c erected from the surface facing the vehicle width inside of the outer peripheral surface on the upper half side of the second casing 14 toward the straight pipe portion 16a. Is fixed to the bottom surface located below the lower surface of the tip of the overhang portion 18b.
このような排気浄化装置によれば、DPFを収容した筒形の第1の筐体12及びSCR触媒を収容した筒形の第2の筐体14が、車両内方から車両外方に向けてこの順に高位となるように配設されると共に、各筐体12、14の遠端部同士を連通する連通管16を、第1の筐体12の上方、かつ第2の筐体14の側方に、近接して配管している。そして、支持ブラケット18の張出部18bの先端が、第2の筐体14の上半側の外周面のうち車幅内方に臨む部分において第2の筐体14を支持する一方、支持ブラケット18の固定部18aが、第1の筐体12を支持している。従って、車両のデッドスペースに排気浄化装置を収めることが可能となるので、最低地上高を確保しつつ、フレーム10の上面に架装される架装物との干渉や、車両外方へ筐体12、14などを突出させることなく、少なくともDPF及びSCR触媒の大型化に対応させることができる。   According to such an exhaust purification device, the cylindrical first housing 12 that houses the DPF and the cylindrical second housing 14 that houses the SCR catalyst are directed from the inside of the vehicle toward the outside of the vehicle. The communication pipe 16 that is disposed so as to be higher in this order and communicates with the distal ends of the respective casings 12 and 14 is provided above the first casing 12 and on the second casing 14 side. The pipes are in close proximity. And while the front-end | tip of the overhang | projection part 18b of the support bracket 18 supports the 2nd housing | casing 14 in the part which faces the vehicle width inside among the outer peripheral surfaces of the upper half side of the 2nd housing | casing 14, a support bracket The 18 fixed portions 18 a support the first housing 12. Accordingly, the exhaust purification device can be housed in the dead space of the vehicle, so that the minimum ground clearance can be ensured, interference with the bodywork mounted on the upper surface of the frame 10, and the housing outside the vehicle. It is possible to cope with at least an increase in the size of the DPF and the SCR catalyst without protruding 12, 14 and the like.
また、支持ブラケット18の固定部18aが、車幅内方かつ下方に延びる、又は、車幅内方かつ下方に延びた後、下方に向けて延びる場合には、その延長端において第1の筐体12を支持して、第1の筐体12及び第2の筐体14を車幅内方に寄せて配設することができるので、少なくともDPF及びSCR触媒のさらなる大型化に対応させることができる。   In addition, when the fixing portion 18a of the support bracket 18 extends inward and downward in the vehicle width, or extends downward inward and downward of the vehicle width, the first housing at the extended end thereof. Since the body 12 is supported and the first housing 12 and the second housing 14 can be arranged inward of the vehicle width, it is possible to cope with further enlargement of at least the DPF and the SCR catalyst. it can.
なお、本実施形態の排気浄化装置において、第1の筐体12は、その軸方向の任意の位置、例えば、略中央付近12dで、排気上流側と排気下流側の2つに分割可能な構造とすることもできる。これにより、DPF清掃時に、排気浄化装置をフレーム10から取り外すことなく、排気浄化装置全体と比較して軽量な第1の筐体12の排気上流側と排気流入管20を車両後方に取り外すことで、第1の筐体12内に収容されたDPFを容易に取り出すことができる。   In the exhaust emission control device of the present embodiment, the first housing 12 can be divided into two parts, that is, an upstream side of exhaust and a downstream side of exhaust at an arbitrary position in the axial direction, for example, approximately 12d near the center. It can also be. Thereby, at the time of DPF cleaning, the exhaust upstream side of the first casing 12 and the exhaust inflow pipe 20 which are lighter than the exhaust purification device as a whole are removed to the rear of the vehicle without removing the exhaust purification device from the frame 10. The DPF accommodated in the first housing 12 can be easily taken out.
第1の筐体12には、DPFの排気上流側にDOCを、第2の筐体14には、SCR触媒の排気下流側にSCR触媒を通過したアンモニアを酸化するためのアンモニア酸化触媒を、それぞれ収納することもできる。この場合、第1の筐体12は、DOCとDPFとを隔てる面を境界として、分割可能な構造とするとよい。これにより、DOCを第1の筐体12から分離することなく、DPFを取り出すことができる。   The first casing 12 has a DOC on the exhaust upstream side of the DPF, and the second casing 14 has an ammonia oxidation catalyst for oxidizing ammonia that has passed through the SCR catalyst on the exhaust downstream side of the SCR catalyst. Each can be stored. In this case, the first housing 12 may have a structure that can be divided with a surface that separates the DOC and the DPF as a boundary. Thereby, the DPF can be taken out without separating the DOC from the first housing 12.
また、支持ブラケット18は、第1の筐体12及び第2の筐体14を直接支持しているが、これに代えて、図3に示すように、各筐体12、14との間にそれぞれ弾性部材24を介して支持してもよい。第2の筐体14について図4に例示すれば、横断面コ字形状に形成した第2のステイ14cの開口端を下向きにしながら、その上面を張出部18b先端下面の下方に位置する底面と対向させた状態で、上面と底面との間にゴム、バネ材などの弾性部材24を介在させて、上面、底面及び弾性部材24に穿設された貫通孔にボルトを挿通して、張出部18b側又は第2のステイ14c側からナットで締結する。これにより、エンジンから発生する振動が、排気浄化装置を介して車体に伝達することを抑制することができる。もっとも、各筐体12、14を支持ブラケット18に直接固定した場合においても、エンジンと排気流入管20との間に、例えば、蛇腹状の排気管を用いることにより、エンジンから発生する振動が、排気浄化装置を介して、車体に伝達することを抑制することは可能である。   Further, the support bracket 18 directly supports the first casing 12 and the second casing 14, but instead of this, as shown in FIG. You may support through the elastic member 24, respectively. For example, FIG. 4 illustrates the second housing 14 with the upper surface of the second stay 14c formed in a U-shaped cross section facing downward and the upper surface thereof positioned below the lower surface of the distal end of the overhanging portion 18b. With an elastic member 24 such as rubber or a spring material interposed between the upper surface and the bottom surface, bolts are inserted into the upper surface, the bottom surface, and through holes formed in the elastic member 24 to Fastening with a nut from the protruding portion 18b side or the second stay 14c side. Thereby, it can suppress that the vibration which generate | occur | produces from an engine is transmitted to a vehicle body via an exhaust gas purification apparatus. However, even when each housing 12 and 14 is directly fixed to the support bracket 18, for example, by using an accordion exhaust pipe between the engine and the exhaust inflow pipe 20, vibrations generated from the engine are It is possible to suppress transmission to the vehicle body via the exhaust purification device.
さらに、第2の筐体14を第1の筐体12の斜め上方に配置する代わりに、第1の筐体12を第2の筐体14の斜め上方に配置する構成としてもよい。この構成によっても、前述の実施形態における効果を奏することができる。この場合、排気流入管20は、第1の筐体12の車両前方側の端部端面を覆って連結されればよく、排気排出管22は、第2の筐体14の車両後方側の端部端面を覆って連結されればよい。   Furthermore, instead of disposing the second housing 14 obliquely above the first housing 12, the first housing 12 may be disposed obliquely above the second housing 14. Also with this configuration, the effects of the above-described embodiment can be achieved. In this case, the exhaust inflow pipe 20 may be connected so as to cover the end surface on the vehicle front side of the first casing 12, and the exhaust discharge pipe 22 is connected to the end of the second casing 14 on the vehicle rear side. What is necessary is just to cover and connect a part end surface.
本実施形態の排気浄化装置において、支持ブラケット18を横断面略ハット形状としたが、これに限られず、図5に示すようなチャンネル材など、公知の構造材を用いてもよい。   In the exhaust purification apparatus of the present embodiment, the support bracket 18 has a substantially hat-shaped cross section. However, the present invention is not limited to this, and a known structural material such as a channel material as shown in FIG. 5 may be used.
図1及び図2に示されるように、接続管部16bにおいて、直線管部16aの管内に向けて液体還元剤を噴射する噴射ノズルを取り付けるためのノズル取付孔26が形成される。これにより、排気中への液体還元剤の均一拡散に十分な直線長さが確保される。均一拡散の補助として、連通管16内に網目状などをなす拡散板を設置してもよい。   As shown in FIGS. 1 and 2, a nozzle attachment hole 26 for attaching an injection nozzle that injects a liquid reducing agent toward the inside of the straight tube portion 16 a is formed in the connection tube portion 16 b. This ensures a sufficient linear length for the uniform diffusion of the liquid reducing agent into the exhaust. As an aid for uniform diffusion, a diffuser plate having a mesh shape or the like may be installed in the communication pipe 16.
12 第1の筐体
14 第2の筐体
16 連通管
16a 直線管部
16b、c 接続管部
18 支持ブラケット
18a 固定部
18b 張出部
18c 補強プレート
20 排気流入管
22 排気排出管
24 弾性部材
DESCRIPTION OF SYMBOLS 12 1st housing | casing 14 2nd housing | casing 16 Communication pipe 16a Straight pipe part 16b, c Connection pipe part 18 Support bracket 18a Fixing part 18b Overhang | projection part 18c Exhaust inflow pipe 22 Exhaust discharge pipe 24 Elastic member

Claims (6)

  1. 排気中の粒子状物質を捕集するDPFを少なくとも収容する筒形をなしつつ、その軸線が車両前後方向に延びる第1の筐体と、
    車幅方向及び上方から見て、前記第1の筐体と少なくとも一部が重畳するように、該第1の筐体の、斜め上方であって車幅外方寄り、又は、斜め下方であって車幅内方寄り、に配設され、窒素酸化物を選択還元して浄化するSCR触媒を少なくとも収容する筒形の第2の筐体と、
    前記第1の筐体と前記第2の筐体のうち、上方に位置する上位筐体の側方、かつ、下方に位置する下位筐体の上方において、各筐体の遠端部同士を連通する連通管と、
    フレームの車幅外方の外側面に部材が上下方向に延びるように固定される固定部、及び、該フレームの上面から上方に突出しないように、前記固定部の上端から車幅外方に延びる張出部、を有する支持ブラケットと、
    を含んで構成され、
    前記支持ブラケットの張出部の先端が、前記上位筐体の上半側の外周面のうち車幅内方に臨む部分において前記上位筐体を支持する一方、
    前記支持ブラケットの固定部は、前記下位筐体を支持すること
    を特徴とする排気浄化装置。
    A first housing that has a cylindrical shape that accommodates at least a DPF that collects particulate matter in the exhaust, and whose axis extends in the vehicle front-rear direction;
    When viewed from the vehicle width direction and from above, the first housing is diagonally above and outside the vehicle width, or diagonally below so that at least a part of the first housing overlaps. A cylindrical second housing that is disposed at the inner side of the vehicle width and contains at least an SCR catalyst that selectively reduces and purifies nitrogen oxides;
    Of the first housing and the second housing, the far end portions of the respective housings communicate with each other on the side of the upper housing located above and above the lower housing located below. A communication pipe
    A fixed portion that is fixed so that a member extends in the vertical direction on an outer side surface of the outer side of the vehicle width of the frame, and extends outward from the upper end of the fixed portion so as not to protrude upward from the upper surface of the frame. A support bracket having an overhang, and
    Comprising
    While the tip of the projecting portion of the support bracket supports the upper casing in the portion facing the vehicle width inward of the outer peripheral surface of the upper half of the upper casing,
    The exhaust purifying device according to claim 1, wherein the fixing portion of the support bracket supports the lower casing.
  2. 前記固定部の下部は、車幅内方かつ下方に延びて、又は、車幅内方かつ下方に延びた後、下方に延びて、その延長端において前記下位筐体を支持することを特徴とする請求項1記載の排気浄化装置。   The lower portion of the fixed portion extends inward and downward in the vehicle width, or extends downward and inward in the vehicle width, and extends downward to support the lower casing at an extended end thereof. The exhaust emission control device according to claim 1.
  3. 前記支持ブラケットは、ハット形の横断面を有することを特徴とする請求項1又は請求項2に記載の排気浄化装置。   The exhaust purification device according to claim 1, wherein the support bracket has a hat-shaped cross section.
  4. 前記支持ブラケットの張出部に、その開口の少なくとも一部を覆う補強プレートが取り付けられたことを特徴とする請求項3記載の排気浄化装置。   The exhaust emission control device according to claim 3, wherein a reinforcing plate that covers at least a part of the opening is attached to the projecting portion of the support bracket.
  5. 前記支持ブラケットは、前記上位筐体及び前記下位筐体を直接支持することを特徴とする請求項1〜請求項4記載のいずれか1つに記載の排気浄化装置。   The exhaust purification device according to any one of claims 1 to 4, wherein the support bracket directly supports the upper casing and the lower casing.
  6. 前記支持ブラケットは、前記上位筐体及び前記下位筐体を弾性部材を介して支持することを特徴とする請求項1〜請求項4記載のいずれか1つに記載の排気浄化装置。   The exhaust purification device according to any one of claims 1 to 4, wherein the support bracket supports the upper casing and the lower casing via an elastic member.
JP2009276537A 2009-12-04 2009-12-04 Exhaust purification device Active JP5361688B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2009276537A JP5361688B2 (en) 2009-12-04 2009-12-04 Exhaust purification device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2009276537A JP5361688B2 (en) 2009-12-04 2009-12-04 Exhaust purification device

Publications (2)

Publication Number Publication Date
JP2011117385A JP2011117385A (en) 2011-06-16
JP5361688B2 true JP5361688B2 (en) 2013-12-04

Family

ID=44282991

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2009276537A Active JP5361688B2 (en) 2009-12-04 2009-12-04 Exhaust purification device

Country Status (1)

Country Link
JP (1) JP5361688B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10883411B2 (en) 2018-06-06 2021-01-05 Ford Global Technologies, Llc Systems and methods for an exhaust-gas aftertreatment device

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013104394A (en) * 2011-11-16 2013-05-30 Hino Motors Ltd Exhaust emission control device
JP5490828B2 (en) 2012-01-10 2014-05-14 シャープ株式会社 Linear system coefficient estimation method, integrated circuit using the same, touch panel system, and electronic device
JPWO2014006978A1 (en) * 2012-07-05 2016-06-02 株式会社小松製作所 Engine unit and work vehicle
JP2015169146A (en) * 2014-03-07 2015-09-28 日立建機株式会社 Post-processing device supporting structure of work machine

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004218475A (en) * 2003-01-10 2004-08-05 Isuzu Motors Ltd Exhaust emission control system for internal combustion engine and exhaust emission control method for internal combustion engine
JP2004218570A (en) * 2003-01-16 2004-08-05 Hino Motors Ltd Mounting structure of particulate filer
JP4785766B2 (en) * 2007-02-09 2011-10-05 日野自動車株式会社 Exhaust purification device
JP4928388B2 (en) * 2007-08-31 2012-05-09 日野自動車株式会社 Exhaust purification device
JP4995689B2 (en) * 2007-10-26 2012-08-08 日野自動車株式会社 Exhaust purification device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10883411B2 (en) 2018-06-06 2021-01-05 Ford Global Technologies, Llc Systems and methods for an exhaust-gas aftertreatment device

Also Published As

Publication number Publication date
JP2011117385A (en) 2011-06-16

Similar Documents

Publication Publication Date Title
US8418448B2 (en) Exhaust gas treatment device for construction machine
JP5220855B2 (en) Exhaust gas treatment equipment
EP1630371B1 (en) Exhaust device for vehicle engine
JP5865040B2 (en) Work vehicle
EP2202390B2 (en) Exhaust emission control device
KR101698733B1 (en) Exhaust isolator
EP2333263B1 (en) Engine device
EP2559875B1 (en) Apparatus for purifying exhaust gas
JP4698359B2 (en) Exhaust purification device
KR101756240B1 (en) Exhaust gas purification device
US8683788B2 (en) Exhaust gas purifying device
JP4928398B2 (en) Exhaust purification device
JP6009260B2 (en) Exhaust purification device
JP5526288B1 (en) Wheel loader
JP4286888B2 (en) Exhaust purification equipment
CN104520551B (en) Supporting mechanism, exhaust treatment unit and wheel loader
JP5114219B2 (en) Exhaust gas purification device for internal combustion engine
JP6116671B2 (en) Collision-resistant system placement in the car engine room
US7637349B2 (en) Exhaust system of motorcycle and motorcycle including exhaust system
US20150020484A1 (en) Exhaust gas purification device
US6990804B2 (en) Combination exhaust gas post treatment/muffler device in the exhaust gas section of an internal combustion engine
KR20160032251A (en) Engine device for mounting on traveling vehicle
US8739918B2 (en) Exhaust systems for vehicles
KR20120088764A (en) Work vehicle
WO2012114801A1 (en) Construction machine

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20120928

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20130829

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20130903

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20130903

R150 Certificate of patent or registration of utility model

Ref document number: 5361688

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

Free format text: JAPANESE INTERMEDIATE CODE: R150

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250