CN208918655U - A kind of entirety side exhaust gas aftertreatment system and tractor - Google Patents

Abstract

The utility model relates to a kind of whole side exhaust gas aftertreatment system and tractors, wherein whole side exhaust gas aftertreatment system is handled, comprising: after-treatment device, noise elimination structure and tailpipe for the tail gas to engine emission on tractor；The both ends of noise elimination structure are removably connected with after-treatment device and tailpipe respectively, and be respectively communicated with inside the two；After-treatment device and noise elimination structure are respectively positioned on the left or right side of engine.The one end of after-treatment device far from noise elimination structure is detachably connected and is connected to the exhaust outlet of engine；Pass through the utility model, the locational space of tractor engine side is effectively utilized, reduce the tractor shell caused by being fixed in tractor inner space deficiency re-molds processing, the pollutant in tractor exhaust emissions is effectively reduced, the pollution of tractor exhaust emissions generation is reduced.

Description

A kind of entirety side exhaust gas aftertreatment system and tractor

Technical field

The utility model relates to tractor post-processing field more particularly to a kind of whole side exhaust gas aftertreatment system and drag Machine drawing.

Background technique

Currently, existing non-rice habitats farm machinery discharge is that (GB20891-2014) discharges in state three, tail gas discharging pollutant is tight It is heavy, it is not provided with after-treatment device on the tractor manufactured to environment and human body there are larger damage, three discharge standard of state, is only set Silencer is set, silencer only reduces tail gas noise, can not carry out pollutant to the tail gas that tractor engine discharges Processing, the exhaust pollutant for causing existing state three to discharge field engine discharge is serious, and untreated tail gas is straight Run in into atmosphere, both destroy environment, there is also damages to human body；Lack on a kind of pair of tractor for motor exhaust into Row processing, reduction discharges pollutants, to meet the after-treatment system of state four and higher standard；Not yet utilize the position of tractor side Set installation after-treatment system.

Utility model content

Technical problem to be solved in the utility model is in view of the deficiencies of the prior art, to provide a kind of whole side tail gas After-treatment system and tractor, at least one to solve the above technical problems.

The technical solution that the utility model solves above-mentioned technical problem first aspect is as follows, after a kind of entirety side tail gas Reason system is handled for the tail gas to engine emission on tractor, comprising: after-treatment device, noise elimination structure and exhaust Tail pipe；The both ends of noise elimination structure are removably connected with after-treatment device and tailpipe respectively, and be respectively communicated with inside the two； The one end of after-treatment device far from noise elimination structure is detachably connected and is connected to the exhaust outlet of engine；After-treatment device and noise elimination Structure is respectively positioned on the left or right side of engine.

The beneficial effects of the utility model are: by being arranged after-treatment device at engine exhaust port, and by tail gas Noise reduction is carried out by noise elimination structure after handling by it, good erasure effect is played, reduces the manufacturing cost of noise-reducing structure, By being detachably connected for above structure, the convenience of maintenance replacement is improved, it is entire that no replacement is required when section components damage After-treatment system reduces part replacement cost；By the utility model, tractor engine side is effectively utilized Locational space reduces the re-molding for tractor shell caused by being fixed in tractor inner space deficiency and adds Work effectively reduces the pollutant in tractor exhaust emissions, reduces the pollution of tractor exhaust emissions generation.

Based on the above technical solution, the utility model can also do following improvement.

Further, after-treatment device includes the diesel oxidation catalyst being successively detachably connected and particle trap；Diesel oil One end on oxidation catalyzer far from particle trap is detachably connected and is connected to the exhaust outlet of engine, in particle trap One end far from diesel oxidation catalyst is detachably connected and is connected to noise elimination structure.

Using above-mentioned further scheme the utility model has the advantages that by the way that diesel oil oxygen is arranged on the position close to engine exhaust port Change catalyst converter, effectively by diesel engine generate exhaust gas in carbon monoxide and hydrocarbon platinum, palladium etc. have urge Change generation oxidation reaction under the catalytic action of active noble metal and is converted to harmless water and carbon dioxide；By will be via diesel oil Treated that gas is handled via particle trap for oxidation catalyzer, effectively eliminates the particulate emissions mixed in the offgas Matter, Particulate Emission substance are mainly to be significantly reduced composed by the molecule (size is less than 4-20 μm) of carbon or carbide Diesel engine generates the solid soot particulates in exhaust gas；After tail gas first passes through diesel oxidation catalyst and particle trap When using noise elimination structure, there is better erasure effect, since the particulate matter in tail gas is reduced, reduce air-flow and touch It hits, the noise that tail gas discharge generates is smaller.

Further, diesel oxidation catalyst, particle trap and noise elimination structure are arranged into linear type overall structure.

Using above-mentioned further scheme the utility model has the advantages that by tying diesel oxidation catalyst, particle trap and noise elimination Structure is set as linear type overall structure, and installation is simple and convenient, and processing and manufacturing is easy, and cost is relatively low, has greatly simplified post-processing The transverse width of device, is readily transported, while internal part is replaced in linear structure easy access.

Further, linear type is integrally-built extends perpendicularly to horizontal plane, and tailpipe setting is in linear type entirety It the upper end of structure and is connect with the noise elimination structure.

Using above-mentioned further scheme the utility model has the advantages that easy for installation, the aesthetic measure of complete machine is improved, tractor is advanced Resistance is smaller in the process, and it is lower that noise elimination structure, particle trap and diesel oxidation catalyst set gradually center of gravity from top to bottom, just In the stability of after-treatment device support.

Further, linear type is integrally-built extends perpendicularly to horizontal plane, and tailpipe setting is in linear type entirety It the lower end of structure and is connect with the noise elimination structure.

Using above-mentioned further scheme the utility model has the advantages that by being arranged the position of tailpipe in linear type overall structure Downside, reduce to support construction needed for after-treatment device, support frame and tractor can be passed through on after-treatment device Body connection, reduces the quantity demand of support frame, the outlet of tailpipe is downward, and the particle in tail gas is emitted on downwards gravity Under the action of it is more smooth.

Further, the integrally-built extending direction of linear type is parallel with tractor direction of advance, and tailpipe is arranged straight It the rear of the integrally-built opposite tractor direction of advance of line style and is connect with the noise elimination structure.

Using above-mentioned further scheme the utility model has the advantages that passing through diesel oxidation catalyst, particle trap and noise elimination structure The linear type overall structure of composition is horizontally disposed and parallel with tractor direction of advance, reduces the post-processing dress because of setting tail gas The visual field to driver for setting generation is interfered, while complete machine advance resistance is substantially reduced, and overall aesthetics is more preferable.

It further, further include post-processing air inlet pipe；The exhaust outlet of one end and engine for post-processing air inlet pipe detachably connects It connects and is connected to, post-process one end on the other end and diesel oxidation catalyst of air inlet pipe far from particle trap and be detachably connected And it is connected to.

Using above-mentioned further scheme the utility model has the advantages that by setting post-processing air inlet pipe, reduce diesel oil oxidation catalysis The direct contact of device and engine reduces engine temperature to the shadow of the performance of the diesel oxidation catalyst in after-treatment device It rings.

It further, further include flexible hose, the both ends of the flexible hose are catalyzed with engine and diesel oil oxidation respectively One end on device far from particle trap is detachably connected and is connected to.

Using above-mentioned further scheme the utility model has the advantages that by setting flexible hose, reduce the vibration of engine generation It is transferred directly to the loosening damage for the noble metal critical component that after-treatment device causes in after-treatment device.

It further, further include the first fixed frame；It is caught on one end of first fixed frame and diesel oxidation catalyst far from particle The one end for catching device is fixedly connected, and the other end of the first fixed frame is fixedly connected on tractor body.

Using above-mentioned further scheme the utility model has the advantages that by the first fixed frame of setting, after-treatment device is significantly improved Stability of strutting system, reduce after-treatment device because of the fixed damage generated built on the sand.

It further, further include the second fixed frame；The periphery of one end of the second fixed frame and tailpipe or after-treatment device Side is detachably connected, and the other end is fixedly connected on tractor body.

Using above-mentioned further scheme the utility model has the advantages that by the second fixed frame of setting, when the second fixed frame and exhaust tail When the peripheral side of pipe is detachably connected, reduce the shaking of the tailpipe positioned at after-treatment device free end, reduces exhaust The possibility of the fracture of tail pipe；When the second fixed frame and after-treatment device are detachably connected, company needed for reducing fixed support The quantity for connecing frame has preferable stability, and the shaking of tailpipe is small, without solid to being individually supported for tailpipe It is fixed.

The technical solution that the utility model solves above-mentioned technical problem first aspect is as follows, a kind of tractor, including this reality With the whole side exhaust gas aftertreatment system of one of any one of novel first aspect technical solution.

The beneficial effects of the utility model are: one of technical solution of the utility model second aspect tractor is because adopting With any one whole side exhaust gas aftertreatment system in the utility model first aspect technical solution, thus, have on The beneficial effect in any technical solution is stated, will not repeat them here.

Detailed description of the invention

Fig. 1 is a kind of whole side exhaust gas aftertreatment system structure chart of some embodiments of the utility model；

Fig. 2 is a kind of whole side exhaust gas aftertreatment system structure chart of other embodiments of the utility model；

Fig. 3 is a kind of whole side exhaust gas aftertreatment system structure chart of the other embodiment of the utility model.

In attached drawing, parts list represented by the reference numerals are as follows:

1, tractor body, 2, engine, the 3, first fixed frame, 4, post-processing air inlet pipe, 5, diesel oxidation catalyst, 6, Particle trap, 7, noise elimination structure, 8, tailpipe, the 9, second fixed frame.

Specific embodiment

The principles of the present invention and feature are described below in conjunction with attached drawing, example is served only for explaining that this is practical It is novel, it is not intended to limit the scope of the utility model.

As shown in Figure 1 to Figure 3, the whole side exhaust gas aftertreatment system of one of the present embodiment, for tractor The tail gas that engine 2 discharges is handled, comprising: after-treatment device, noise elimination structure 7 and tailpipe 8；The two of noise elimination structure 7 End is removably connected with after-treatment device and tailpipe 8 respectively, and be respectively communicated with inside the two；After-treatment device is separate to disappear One end of acoustic form 7 is detachably connected and is connected to the exhaust outlet of engine 2；After-treatment device and noise elimination structure 7 are respectively positioned on hair The left or right side of motivation 2.

Preferably, for example, the form that after-treatment device in the above-described embodiments can be realized, which is, can be an only installation bavin Oily catalytic converter (Diesel Oxidation Concenter, DOC), can also install DOC and particle trap 6 simultaneously (Diesel Particulate Filter, DPF) or CDPF can also use exhaust gas re-circulation apparatus (Exhaust Gas Recirculation, EGR) and DPF (or CDPF) combine mode carry out；Furthermore it is also possible that install simultaneously DOC, DPF (or ) and scr reactor (Selective Catalytic Reduction, SCR) CDPF；Absorption can also be used Any one mode in catalytic reduction method (lean NOx trap, LNT) and plasma asistance catalytic reduction method carries out, and removes this Except, can also be other, all can be realized the device handled 2 tail gas of engine；In addition, using SCR (or SSCR) During processing, it is also necessary to which setting and SCR (or SSCR) handle the urea pump tank assembly that connect of pipeline, on urea pump tank assembly It is provided with urea pump and urea box, wherein urea pump is carried out for the solution in urea box to be pumped in tail-gas after treatment apparatus The catalytic treatment of tail gas；After-treatment device can be bolted, rivet or shackle member clamping in any form it is solid It is scheduled on the left or right side of the engine 2 of tractor, after tailpipe 8 can be detachably connected on by bolt or shackle member On the gas outlet of processing unit.

The beneficial effects of the utility model are: by being arranged after-treatment device in 2 exhaust ports of engine, and by tail gas Carry out noise reduction by noise elimination structure 7 after handling by it, play good erasure effect, reduce the manufacture of noise-reducing structure at This improves the convenience of maintenance replacement by being detachably connected for above structure, and it is whole that when section components damage, no replacement is required A after-treatment system reduces part replacement cost；By the utility model, 2 side of tractor engine is effectively utilized The locational space of side reduces re-molding for the tractor shell caused by being fixed in tractor inner space deficiency Processing, effectively reduces the pollutant in tractor exhaust emissions, reduces the pollution of tractor exhaust emissions generation.

As shown in Figure 1 to Figure 3, a kind of whole side exhaust gas aftertreatment system in some alternative embodiments, it is rear to locate Managing device includes the diesel oxidation catalyst 5 being successively detachably connected and particle trap 6；It is separate on diesel oxidation catalyst 5 One end of particle trap 6 is detachably connected and is connected to the exhaust outlet of engine 2, far from diesel oil oxidation in particle trap 6 One end of catalyst converter 5 is detachably connected and is connected to noise elimination structure 7.

Specifically, in the above-described embodiments it should be noted that (the Diesel Oxidation of diesel oxidation catalyst 5 Concenter, DOC) be mounted in 2 gas exhaust piping of engine, by oxidation reaction by engine 2 exhaust in carbon monoxide (CO) and hydrocarbon (HC) is converted to harmless water (H₂And carbon dioxide (CO 0)₂) device, with diesel engine install additional aoxidize Type catalyst converter, using noble metals such as platinum (Pt), palladiums (Pd) as catalyst, the main soluble organic object reduced in Particulate Emission The content of matter (Soluble Organic Fraction, SOF) to reduce particulate material (Particulate Matter, PM discharge), while HC and CO in exhaust can be effectively reduced, diesel oxidation catalyst 5 can remove 90% SOF, from And PM discharge is made to reduce 40%~50%；It can respectively reach 88% and 68% to the treatment effeciency of HC and CO；Catalysis oxidation Technology has good effect to the SOF in removing diesel particle, i.e., adds catalyzed conversion in diesel engine exhaust system Oxidation reaction occurs under the action ofs the noble metal catalysts such as platinum, rhodium and palladium or rare earth catalyst etc. and is converted into CO by device, SOF₂With H₂O and remove, its usual removal efficiency is up to 80%.The harmful substances such as HC and the CO in tail gas can be also removed simultaneously；Particle is caught It catches device 6 (Diesel Particulate Filter, DPF) or CDPF is that one kind is mounted in 24 exhaust system of diesel engine Ceramic filter, it can be captured before Particulate Emission substance enters atmosphere.

Preferably, detachable connection method in the above-described embodiments be bolted or shackle member clamping in it is any One kind being also possible to other detachable connection methods that may be implemented.

Using above-described embodiment the utility model has the advantages that by the way that diesel oil oxidation is arranged on the position close to 2 exhaust outlet of engine Catalyst converter 5, effectively by exhaust gas that diesel engine 2 generates carbon monoxide and hydrocarbon have in platinum, palladium etc. and urge Change generation oxidation reaction under the catalytic action of active noble metal and is converted to harmless water and carbon dioxide；By will be via diesel oil Treated the gas of oxidation catalyzer 5 is handled via particle trap 6, effectively eliminates the Particulate Emission mixed in the offgas Substance, Particulate Emission substance are mainly greatly to subtract composed by the molecule (size is less than 4-20 μm) of carbon or carbide The solid soot particulates in the generation exhaust gas of diesel engine 2 are lacked；Tail gas first passes through diesel oxidation catalyst 5 and particle capture When after device 6 using noise elimination structure 7, there is better erasure effect, since the particulate matter in tail gas is reduced, reduce gas Stream collision, the noise that tail gas discharge generates are smaller.

As shown in Figure 1 to Figure 3, a kind of whole side exhaust gas aftertreatment system in some alternative embodiments, diesel oil Oxidation catalyzer 5, particle trap 6 and noise elimination structure 7 are arranged into linear type overall structure.

Using above-described embodiment the utility model has the advantages that by by diesel oxidation catalyst 5, particle trap 6 and noise elimination structure 7 It is set as linear type overall structure, installation is simple and convenient, and processing and manufacturing is easy, and cost is relatively low, has greatly simplified post-processing dress The transverse width set, is readily transported, while internal part is replaced in linear structure easy access.

In some alternative embodiments, diesel oxidation catalyst 5, particle trap 6 and noise elimination structure 7 can also arrange U-shaped, S font or L-shaped, benefit are can be designed according to the specific structure of tractor, are had overall compact Whole pattern.

As shown in Figure 1, a kind of whole side exhaust gas aftertreatment system in some alternative embodiments, linear type are whole Structure extends perpendicularly to horizontal plane, and the setting of tailpipe 8 connects in the integrally-built upper end of linear type and with noise elimination structure 7 It connects.

Using above-described embodiment the utility model has the advantages that easy for installation, the aesthetic measure of complete machine, tractor traveling process are improved Middle resistance is smaller, and it is lower that noise elimination structure 7, particle trap 6 and diesel oxidation catalyst 5 set gradually center of gravity from top to bottom, just In the stability of after-treatment device support.

As shown in Fig. 2, a kind of whole side exhaust gas aftertreatment system in some alternative embodiments, linear type are whole Structure extends perpendicularly to horizontal plane, and the setting of tailpipe 8 connects in the integrally-built lower end of linear type and with noise elimination structure 7 It connects.

Using above-described embodiment the utility model has the advantages that integrally-built in linear type by being arranged the position of tailpipe 8 Downside reduces to support construction needed for after-treatment device, can pass through support frame and tractor machine on after-treatment device Body 1 connects, and reduces the quantity demand of support frame, the outlet of tailpipe 8 is downward, and the particle in tail gas is emitted on downwards gravity Under the action of it is more smooth.

As shown in figure 3, a kind of whole side exhaust gas aftertreatment system in some alternative embodiments, linear type are whole The extending direction of structure is parallel with tractor direction of advance, and the setting of tailpipe 8 is integrally-built upper relatively dilatory in linear type The rear of machine direction of advance with noise elimination structure 7 while connect.

Using above-described embodiment the utility model has the advantages that passing through diesel oxidation catalyst 5, particle trap 6 and 7 groups of noise elimination structure At linear type overall structure it is horizontally disposed and parallel with tractor direction of advance, reduce the after-treatment device because tail gas is arranged The visual field to driver generated is interfered, while complete machine advance resistance is substantially reduced, and overall aesthetics is more preferable.

As shown in Figure 1 to Figure 3, a kind of whole side exhaust gas aftertreatment system in some alternative embodiments, is also wrapped Include post-processing air inlet pipe 4；Post-processing air inlet pipe 4 one end be detachably connected and be connected to the exhaust outlet of engine 2, post-process into The other end of tracheae 4 is detachably connected and is connected to one end on diesel oxidation catalyst 5 far from particle trap 6.

Preferably, in the above-described embodiments, post-processing air inlet pipe 4 is metallic tube-shaped structure, and shape is smooth curve, Benefit is the resistance for reducing tail gas when wherein circulating, and the detachable connection method in above-described embodiment is to be bolted, and removes this Except, it can also be other dismountable connection types, be provided with gasket at the both ends of post-processing air inlet pipe 4.

Using above-described embodiment the utility model has the advantages that by setting post-processing air inlet pipe 4, reduce diesel oxidation catalyst 5 With the direct contact of engine 2, reduce 2 temperature of engine to the performance of the diesel oxidation catalyst 5 in after-treatment device It influences.

As shown in Figure 1 to Figure 3, a kind of whole side exhaust gas aftertreatment system in some alternative embodiments, is also wrapped Include flexible hose, the both ends of the flexible hose respectively on engine 2 and diesel oxidation catalyst 5 far from particle trap 6 one end is detachably connected and is connected to.

Preferably, flexible hose can be metal hose or bellows resistant to high temperature, in addition to this it is possible to select With the high-temperature flexible tubing of other forms.

Using above-described embodiment the utility model has the advantages that by setting flexible hose, the vibration for reducing the generation of engine 2 is direct It is transferred to the loosening damage for the noble metal critical component that after-treatment device causes in after-treatment device.

As shown in Figure 1 to Figure 3, a kind of whole side exhaust gas aftertreatment system in some alternative embodiments, is also wrapped Include the first fixed frame 3；The fixed company in one end on one end of first fixed frame 3 and diesel oxidation catalyst 5 far from particle trap 6 It connects, the other end of the first fixed frame 3 is fixedly connected on tractor body 1.

Preferably, the first fixed frame 3 is the metal holder that angle steel or rectangle steel etc. are welded, and particle trap The junction of 6 lateral walls is provided with elastic buffering pad.

Using above-described embodiment the utility model has the advantages that by the first fixed frame 3 of setting, the branch of after-treatment device is significantly improved Stability is supportted, reduces after-treatment device because of the fixed damage generated built on the sand.

As shown in Figure 1 to Figure 3, a kind of whole side exhaust gas aftertreatment system in some alternative embodiments, is also wrapped Include the second fixed frame 9；One end of second fixed frame 9 and the peripheral side of tailpipe 8 or after-treatment device are detachably connected, another End is fixedly connected on tractor body 1.

Preferably, the second fixed frame 9 is the metal holder that angle steel or rectangle steel etc. are welded, with tailpipe 8 Or the junction of the lateral wall of after-treatment device is provided with elastic buffering pad.

Using above-described embodiment the utility model has the advantages that by the second fixed frame 9 of setting, when the second fixed frame 9 and tailpipe 8 Peripheral side when being detachably connected, reduce the shaking of the tailpipe 8 positioned at after-treatment device free end, reduce exhaust tail The possibility of the fracture of pipe 8；When the second fixed frame 9 and after-treatment device are detachably connected, company needed for reducing fixed support The quantity for connecing frame has preferable stability, and the shaking of tailpipe 8 is small, without solid to being individually supported for tailpipe 8 It is fixed.

The embodiment that the utility model solves above-mentioned technical problem first aspect is as follows, a kind of tractor, including this is practical One of any one of novel first aspect embodiment entirety side exhaust gas aftertreatment system.

The beneficial effect of the present embodiment is: one of embodiment of the utility model second aspect tractor is because using Any one whole side exhaust gas aftertreatment system in the utility model first aspect embodiment, thus, have any of the above-described Beneficial effect in embodiment, will not repeat them here.

In the description of this specification, reference term " embodiment one ", " embodiment two ", " example ", " specific example " or The description of " some examples " etc. means that specific method, device or feature described in conjunction with this embodiment or example are contained in this reality With at least one novel embodiment or example.In the present specification, schematic expression of the above terms are necessarily directed to Be identical embodiment or example.Moreover, description specific features, method, apparatus or feature can any one or it is more It can be combined in any suitable manner in a embodiment or example.In addition, without conflicting with each other, those skilled in the art can The feature of different embodiments or examples described in this specification and different embodiments or examples to be combined.

The above is only the preferred embodiments of the utility model, are not intended to limit the utility model, all in the utility model Spirit and principle within, any modification, equivalent replacement, improvement and so on should be included in the protection model of the utility model Within enclosing.

Claims (10)

1. a kind of entirety side exhaust gas aftertreatment system, the tail gas for discharging to engine on tractor (2) are handled, It is characterized in that, comprising: after-treatment device, noise elimination structure (7) and tailpipe (8)；It the both ends of the noise elimination structure (7) respectively can Dismantling connection has the after-treatment device and a tailpipe (8), and be respectively communicated with inside the two；The after-treatment device One end far from the noise elimination structure (7) is detachably connected and is connected to the exhaust outlet of the engine (2), the post-processing dress Set the left or right side that the engine (2) are respectively positioned on the noise elimination structure (7).

2. a kind of whole side exhaust gas aftertreatment system according to claim 1, which is characterized in that the after-treatment device Including the diesel oxidation catalyst (5) being successively detachably connected and particle trap (6)；On the diesel oxidation catalyst (5) One end far from the particle trap (6) is detachably connected and is connected to the exhaust outlet of the engine (2), and the particle is caught One end on device (6) far from the diesel oxidation catalyst (5) is caught to be detachably connected and be connected to the noise elimination structure (7).

3. a kind of whole side exhaust gas aftertreatment system according to claim 2, which is characterized in that the diesel oil oxidation is urged Change device (5), the particle trap (6) and the noise elimination structure (7) and is arranged into linear type overall structure.

4. a kind of whole side exhaust gas aftertreatment system according to claim 3, which is characterized in that the linear type is whole Structure extends perpendicularly to horizontal plane, tailpipe (8) setting the integrally-built upper end of the linear type and with Noise elimination structure (7) connection.

5. a kind of whole side exhaust gas aftertreatment system according to claim 3, which is characterized in that the linear type is whole Structure extends perpendicularly to horizontal plane, tailpipe (8) setting the integrally-built lower end of the linear type and with Noise elimination structure (7) connection.

6. a kind of whole side exhaust gas aftertreatment system according to claim 3, which is characterized in that the linear type is whole The extending direction of structure is parallel with tractor direction of advance, and tailpipe (8) setting is integrally-built in the linear type It goes up the rear of opposite tractor direction of advance and is connect with the noise elimination structure (7).

7. a kind of whole side exhaust gas aftertreatment system according to claim 2, which is characterized in that further include post-process into Tracheae (4)；One end of post-processing air inlet pipe (4) is detachably connected and is connected to the exhaust outlet of the engine (2), described The one end post-processed on the other end and the diesel oxidation catalyst (5) of air inlet pipe (4) far from the particle trap (6) can Dismantling connection and connection.

8. according to a kind of described in any item whole side exhaust gas aftertreatment systems of claim 2 to 7, which is characterized in that also wrap Include the first fixed frame (3)；Far from the particle on one end of first fixed frame (3) and the diesel oxidation catalyst (5) One end of catcher (6) is fixedly connected, and the other end of first fixed frame (3) is fixedly connected on tractor body (1).

9. a kind of whole side exhaust gas aftertreatment system according to any one of claims 1 to 7, which is characterized in that also wrap Include the second fixed frame (9)；One end and the tailpipe (8) of second fixed frame (9) or the peripheral side of after-treatment device It is detachably connected, the other end is fixedly connected on tractor body (1).

10. a kind of tractor, which is characterized in that after a kind of whole side tail gas as described in any one of claim 1 to 9 Processing system.