KR101969969B1 - Fixing structure of Exhaust Gas After treatment Device - Google Patents

Fixing structure of Exhaust Gas After treatment Device Download PDF

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Publication number
KR101969969B1
KR101969969B1 KR1020120092510A KR20120092510A KR101969969B1 KR 101969969 B1 KR101969969 B1 KR 101969969B1 KR 1020120092510 A KR1020120092510 A KR 1020120092510A KR 20120092510 A KR20120092510 A KR 20120092510A KR 101969969 B1 KR101969969 B1 KR 101969969B1
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South Korea
Prior art keywords
exhaust gas
engine
gas aftertreatment
aftertreatment device
exhaust
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KR1020120092510A
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Korean (ko)
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KR20140026829A (en
Inventor
신용
김정구
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대동공업주식회사
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Publication of KR20140026829A publication Critical patent/KR20140026829A/en
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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
    • F01N13/18—Construction facilitating manufacture, assembly, or disassembly
    • F01N13/1805—Fixing exhaust manifolds, exhaust pipes or pipe sections to each other, to engine or to vehicle body
    • 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
    • F01N13/1838—Construction facilitating manufacture, assembly, or disassembly characterised by the type of connection between parts of exhaust or silencing apparatus, e.g. between housing and tubes, between tubes and baffles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K13/00—Arrangement in connection with combustion air intake or gas exhaust of propulsion units
    • B60K13/04—Arrangement in connection with combustion air intake or gas exhaust of propulsion units concerning exhaust
    • 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
    • F01N2340/00—Dimensional characteristics of the exhaust system, e.g. length, diameter or volume of the apparatus; Spatial arrangements of exhaust apparatuses
    • F01N2340/04—Dimensional characteristics of the exhaust system, e.g. length, diameter or volume of the apparatus; Spatial arrangements of exhaust apparatuses characterised by the arrangement of an exhaust pipe, manifold or apparatus in relation to vehicle frame or particular vehicle parts
    • 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
    • F01N2340/00—Dimensional characteristics of the exhaust system, e.g. length, diameter or volume of the apparatus; Spatial arrangements of exhaust apparatuses
    • F01N2340/06—Dimensional characteristics of the exhaust system, e.g. length, diameter or volume of the apparatus; Spatial arrangements of exhaust apparatuses characterised by the arrangement of the exhaust apparatus relative to the turbine of a turbocharger
    • 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
    • F01N2590/00—Exhaust or silencing apparatus adapted to particular use, e.g. for military applications, airplanes, submarines
    • F01N2590/08—Exhaust or silencing apparatus adapted to particular use, e.g. for military applications, airplanes, submarines for heavy duty applications, e.g. trucks, buses, tractors, locomotives
    • 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
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
    • F01N3/033—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices
    • F01N3/035—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices with catalytic reactors, e.g. catalysed diesel particulate filters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L27/00—Adjustable joints, Joints allowing movement
    • F16L27/10—Adjustable joints, Joints allowing movement comprising a flexible connection only, e.g. for damping vibrations
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L51/00—Expansion-compensation arrangements for pipe-lines
    • F16L51/02—Expansion-compensation arrangements for pipe-lines making use of bellows or an expansible folded or corrugated tube

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

Abstract

The present invention relates to a mounting structure of an exhaust gas aftertreatment device of a combine, and in particular, even in the case of a structure where it is difficult to mount the exhaust gas aftertreatment device on the upper part of the engine because the upper and lower widths of the engine room are narrow like the combine. Provided is a mounting structure of the exhaust gas aftertreatment device of the combine which can effectively install the device. The present invention for this purpose, in the structure for mounting the exhaust gas after-treatment apparatus for purifying the engine exhaust gas of the combine, the longitudinal direction of the exhaust gas after-treatment apparatus arranged in parallel to the longitudinal direction of the engine engine It is fixed by using a fixing member on the surrounding body frame, and interconnects the exhaust gas inlet side provided on one side of the exhaust gas aftertreatment unit and the exhaust side of the turbocharger connected to the exhaust manifold of the engine through a connecting pipe. Characterized in that configured.

Description

Fixing structure of exhaust gas after treatment device

The present invention relates to an exhaust gas aftertreatment device mounting structure of a combine.

Most agricultural work vehicles, such as combines, are provided with driving and working power through a diesel engine.

The diesel engine is a reciprocating internal combustion engine that operates by compressing and igniting diesel or heavy oil as fuel, and has excellent durability, but has a serious effect on air pollution compared to gasoline engines (NOx). Excessive emissions of particulate matter (PM) are severe.

Therefore, countries are tightening emission regulations of diesel engines, and in order to meet the Tier 4 level of environmental regulations in advanced countries such as Europe and North America, technically delay fuel injection timing and exhaust gas recirculation equipment. In order to reduce the concentration of nitrogen oxides and to reduce particulate matter, various measures such as improving the combustion performance of the engine have been taken.

As an exhaust gas aftertreatment device of a diesel engine for minimizing such pollutants and preserving the air environment, a diesel oxidation catalyst (DOC) and a diesel particulate filter (DPF) are used. Exhaust gas aftertreatment device in the form of a combination of hereinafter referred to as 'DPF' has been widely adopted and used in the art. (Refer to Korean Patent Publication No. 2012-0052510)

The exhaust gas purification of diesel engines mainly targets nitrogen oxides (NOx) and particulate matter (PM; various particulate hazardous substances including soot), which are adsorbed by DOC or DPF in the exhaust aftertreatment during the exhaust process. By this, it is purified.

Among them, in particular, DPF collects particulate matter discharged from a diesel engine with a filter, burns it (recycles), and collects particulate matter and continues to use it. Is known as a very good exhaust gas aftertreatment.

However, the exhaust gas aftertreatment device in the form of a combination of such DOC and DPF has a disadvantage of bulky and heavy, causing a lot of difficulties in mounting on the existing agricultural work vehicle.

In particular, since the exhaust gas aftertreatment device requires an exhaust temperature of a predetermined temperature or more in order to reliably remove combustion of particulate matter or obtain sufficient catalytic activity, there is a problem that structural limitations inevitably occur in the position as close as possible to the engine. .

Therefore, it is inevitable to install such an exhaust gas aftertreatment apparatus in the engine room, but the engine room structure of the existing agricultural work vehicle is very narrow, and there are many difficulties in securing the installation space. In particular, when the exhaust gas aftertreatment device is installed in an agricultural work vehicle having an engine room structure having a very narrow upper and lower width, such as an engine room of a combine (combine), there are a lot of space restrictions.

In addition, the conventional combine combines a high horsepower engine, the driving vibration is severely generated in this case, in this case, if there is no fixing means for firmly supporting the exhaust after-treatment device exhaust gas after-treatment device is subjected to vibration shock This may cause damage or damage to the purification function, and in severe cases, the exhaust gas aftertreatment device may leave the fixed position while driving and collide with surrounding structures, especially the engine, thereby causing serious failures and accidents.

Accordingly, the present invention has been made in order to solve the various problems of the prior art, the object of the present invention is to arrange the longitudinal direction of the exhaust gas aftertreatment apparatus parallel to the longitudinal direction of the engine body frame around the engine It is fixed by a bracket on the exhaust gas inlet side provided on one side of the exhaust gas aftertreatment device and the exhaust side of the turbocharger connected to the exhaust manifold of the engine by connecting to each other through a coupling pipe, After the exhaust gas of the combine that can be effectively mounted by using the exhaust gas aftertreatment device without changing the layout even in a structure where the upper and lower width of the engine room is narrow and it is difficult to install the exhaust gas aftertreatment device on the upper part of the engine. The present invention provides a treatment device mounting structure.

Another object of the present invention is to make it possible to fix the exhaust gas aftertreatment device in a compact structure around the engine through the bracket without processing the engine case or changing the existing engine room structure to improve the space utilization inside the engine room. The present invention provides a combine exhaust gas post-treatment device mounting structure that can be improved.

Another object of the present invention is to transfer from the engine by applying a portion of the connecting pipe interconnecting the exhaust inlet side of the exhaust aftertreatment and the exhaust side of the turbocharger connected to the exhaust manifold as a corrugated flexible pipe. The present invention provides a mounting structure of an exhaust gas aftertreatment device of a combine that can buffer and absorb vibration to stably maintain the performance of the exhaust gas aftertreatment device.

In order to solve the above technical problem, the present invention provides a structure for attaching an exhaust gas aftertreatment apparatus for purifying an exhaust gas of a combine to an engine, wherein the longitudinal direction of the exhaust gas aftertreatment apparatus is set in relation to the longitudinal direction of the engine. Arranged in parallel and fixed on the body frame around the engine using a fixing member, connecting the exhaust gas inlet side provided on one side of the exhaust gas aftertreatment unit with the exhaust side of the turbocharger connected to the exhaust manifold of the engine. Characterized in that the interconnected configuration through the pipe.

The fixing member includes a first bracket fixed to the vehicle body frame; It may be configured to include; a second bracket coupled to the first bracket, the mounting bracket is fixed to the exhaust gas aftertreatment device.

Here, the first bracket has a pair of first bent surfaces bent in the longitudinal direction of the exhaust gas aftertreatment device, and a second bent surface bent in a direction perpendicular to the bending direction of the first bent surface, The first bent surface and the second bent surface may be configured to be fastened and fixed simultaneously to three points of the body frame.

In addition, the second bracket is provided with two independent structures bent in a 'b' shape and is disposed to face each other on the outside of the first bent surface of the first bracket, and one end thereof is the first bent surface. It is fastened to the vehicle body frame through bolts in the butted state, respectively, and the other end thereof may be fixed to the bottom of the exhaust gas aftertreatment device through the bolts.

In addition, a portion of a connection pipe connecting the exhaust gas inlet side and the exhaust side of the turbocharger may be applied as a flexible pipe having a corrugated shape.

The present invention according to the above configuration, the longitudinal direction of the exhaust gas aftertreatment device is disposed in parallel to the longitudinal direction of the engine and then fixed through a bracket on the body frame around the engine, one side of the exhaust gas aftertreatment device The exhaust gas inlet side of the engine and the exhaust side of the turbocharger connected to the exhaust manifold of the engine are connected to each other by connecting pipes, so that the upper and lower widths of the engine room, such as a combine, are narrow and exhausted to the upper part of the engine. Even in the case of a structure that is difficult to install the gas aftertreatment device, there is an advantage that the exhaust gas aftertreatment device can be effectively mounted and used without changing a layout.

In particular, since the exhaust gas aftertreatment device can be fixed in a compact structure on the space of the rear body frame of the engine through two brackets, space utilization inside the combine engine room can be improved.

In addition, since the exhaust gas aftertreatment device can be configured as a structure that is not mounted directly on the engine, the engine performance and durability are not increased because it does not cause structural stiffness or NVH (Noise Vibration Harshness) characteristics of the engine itself. There is an advantage that can be prevented from falling.

In addition, the present invention by installing a corrugated flexible pipe in a portion of the connection pipe interconnecting the exhaust gas inlet side of the exhaust gas aftertreatment and the exhaust side of the turbocharger connected to the exhaust manifold, thereby preventing vibration transmitted from the engine. Absorption and buffering in the flexible pipe part can prevent the vibration from being immediately transmitted to the exhaust gas aftertreatment device, so that the performance of the exhaust gas aftertreatment device can be stably maintained.

1 is a side view showing a state in which an engine equipped with an exhaust gas aftertreatment device of the present invention is installed in a combine.
Figure 2 is an enlarged detail view showing the structure of the engine peripheral portion is installed exhaust gas after-treatment device of the present invention.
Figure 3 is a detailed view showing the exhaust gas aftertreatment device of the present invention is fixed to the body frame through the bracket.
4 is a detailed view of FIG. 3 viewed from another direction.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a side view showing a state in which an engine equipped with an exhaust gas aftertreatment device of the present invention is installed inside a combine.

Referring to Figure 1, the combine (combine) according to an embodiment of the present invention includes a harvesting unit 30 disposed in front of the gas 10 to cut the grain. The base 10 has a crawler-type driving wheel 20, the grain cut by the harvesting unit 30 is the rear side of the base 10 along the feed rail installed along one side of the base 10 It is returned to the threshing apparatus (not shown) located in. And threshing with respect to the harvest conveyed through the threshing apparatus is performed.

On the other hand, the grain threshed in the threshing apparatus is conveyed to a sorting apparatus (not shown) disposed in the gas below the threshing apparatus, and the hell and straw contained in the grain are filtered through the sorting apparatus.

The grains of the sorted grains thus treated are returned to the grain tank 50 provided inside the other side of the gas 10 for temporary storage. The air is discharged to the desired place outside the gas 10.

Here, the overall gas operation related to the driving of the base 10 and the driving of the device is performed through various lever operations installed in the gas operation unit 70 or the driver's seat, wherein the gas operation unit 70 is open. Have a structure that can be protected by the cabin 80 as shown in the figure or as shown.

In addition, an engine room (not shown) is formed at a lower side of the gas operation unit 70, and an engine 120 is provided in the engine room for generating work and driving power, and the engine 120 is installed. The room is sealed and protected by an opening dustproof cover assembly 100 installed on one side of the gas 10 between the cabin 80 and the grain tank 50.

On the other hand, the exhaust gas after-treatment apparatus 200 for purifying the exhaust gas discharged from the engine 120 is installed in a position adjacent to the engine 120 in the engine room.

2 is an enlarged detailed view of the structure of a periphery of the engine 120 in which the exhaust gas aftertreatment device 200 of the present invention is installed. And, Figure 3 is a detailed view showing the exhaust gas after-treatment device 200 of the present invention is fixed to the vehicle body frame 110 through the brackets 250, 260, Figure 4 in a different direction This is a detailed view.

Here, when viewed from the engine periphery structure shown in FIG. 2, the portion where the radiator side fan 125 is installed is the right side of the combine and the portion where the transmission 106 is located is the left side of the combine, and the gas operating portion ( The driver's seat 70 is located at the front side of the combine and the part at which the exhaust gas aftertreatment device 200 is located is at the rear side of the combine.

In the description of the specific mounting structure of the exhaust gas after-treatment apparatus 200 of the present invention to be described below will be described based on the coordinate directions presented above.

2 to 4, the exhaust gas aftertreatment apparatus 200 according to the present invention is mounted in an engine room (not shown) of a combine, and carbon monoxide (CO) and hydrocarbons (HC) included in the exhaust gas. Diesel Oxidation Catalyst (DOC) to remove the (210) and diesel particulate filter to filter particulate matter (PM; various particulate harmful substances including soot) contained in the exhaust gas ( DPF; Diesel Particulate Filter, hereinafter referred to as 'DPF').

Specifically, the exhaust gas after-treatment device 200 is arranged in parallel along the left and right direction of the combine, that is, the longitudinal direction (X-axis direction) of the engine 120, the rear side away from the engine 120 by a predetermined distance. The brackets 250 and 260 are fixed on the body frame 110.

In the exhaust gas aftertreatment apparatus 200, an exhaust gas inlet 212 through which the exhaust gas discharged from the exhaust manifold 140 of the engine 120 flows is provided at the DOC 210 side, and the DPF 220 is provided. The side is provided with a purification gas outlet 222 through which the purified gas is discharged through the exhaust gas aftertreatment device 200.

In addition, the exhaust gas inlet 212 is connected to the exhaust port 152 side of the turbocharger 150 connected to the exhaust manifold 140 located on the opposite side thereof through the connection pipe 270. At this time, the connection pipe 270 is inclined obliquely from the front of the engine 120 to the rear side at a predetermined distance away from the engine 120 has a structure connected.

At this time, a portion of the connection pipe 270 interconnecting the exhaust gas inlet 212 of the exhaust gas aftertreatment device 200 and the exhaust port 152 of the turbocharger 150 has a corrugated pipe shape. flexible pipe 274 is installed. Having such a configuration, since the vibration of the engine 120 transmitted through the connection pipe 270 can be effectively absorbed and blocked in the flexible pipe 274, the exhaust gas aftertreatment device 200 is transmitted from the engine It can be prevented from being damaged by the vibration shock. In this case, the flexible pipe 274 for vibration damping may be formed over the entire length of the connection pipe 270.

On the other hand, the bracket for fixing the exhaust gas after-treatment device 200 on the body frame 110, the first bracket 250 is fixed to the body frame 110, and one side and the first bracket 250 and The second bracket 260 is coupled to the contact and the other side is coupled to the exhaust gas after-treatment device 200.

Here, the first bracket 250 is a pair of first bent surface 251 bent in the longitudinal direction (X-axis direction) of the exhaust gas after-treatment device 200, and the first bent surface 251 The second bending surface 252 is bent in a direction perpendicular to the bending direction (Y-axis direction). The first bracket 250 is bolted to any three points of the body frame 110 in which two first bent surfaces 251 and one second bent surface 252 are located at the rear side of the engine 120. Fastening is fixed at the same time using.

In addition, the second bracket 260 is provided with two independent structures bent in a 'b' shape, and abuts against an outer portion of the pair of first bent surfaces 251 formed on the first bracket 250. It is arranged to face each other in the state.

In this arrangement, the lower ends of the second brackets 260 abut on the body frame 110 at the same time by contacting the outer surfaces of the first bent surface 251 of the first bracket 250 using bolts. The upper end is fixed to the bottom of the exhaust gas after-treatment device 200 through a bolt.

At this time, each upper end portion of the two second brackets 260 supporting the bottom portion of the exhaust gas aftertreatment device 200 has an arc shape so as to surround and support the cylindrical outer surface of the exhaust gas aftertreatment device 200. It is formed to have a curved shape.

In addition, ribs 262 are formed at the inner bent portions of the two second brackets 260 having the "a" shape to improve structural rigidity.

According to this structure, the exhaust gas after-treatment device 200 is a portion of the body frame 110 located on the rear side of the engine 120 through the one first bracket 250 and the two second brackets 260. It can be firmly fixed and supported on.

Referring to the operation mechanism of the exhaust gas after-treatment apparatus 200 having the mounting structure as described above, the exhaust gas discharged when the engine 120 is driven flows into the turbocharger 150 connected to the exhaust manifold side and the turbo After the charger 150 is driven, the exhaust gas is introduced through the exhaust gas inlet 212 of the DOC 210 connected through the turbocharger 150 and the connection pipe 270 to exhaust the after-treatment device 200. ) Is supplied inside. The exhaust gas supplied into the exhaust gas aftertreatment device 200 is purified through the DOC 210 and the DPF 220 and finally discharged to the atmosphere through the purification gas outlet 222. At this time, the vibration of the engine 120 transmitted through the connection pipe 270 is absorbed and buffered in a portion of the flexible pipe 274 of the corrugated shape installed in a portion of the connection pipe 270 exhaust gas after-treatment device 200 The vibration shock is prevented from being transmitted.

As described above, according to the present invention, the longitudinal direction of the exhaust gas aftertreatment device 200 is disposed in parallel to the longitudinal direction of the engine 120, and then the brackets are mounted on the rear body frame 110 of the engine 120. The turbocharger connected to the exhaust manifold 140 of the engine 120 and the exhaust gas inlet 212 provided at one side of the exhaust gas after-treatment device 200 is fixed through 250 and 260. By configuring the exhaust port 152 side of the 150 to be connected to each other through the connecting pipe 270, a separate layout (lay-out) for agricultural work vehicles, such as a combine (combine) relatively narrow top and bottom width of the engine room The exhaust gas aftertreatment device 200 may be effectively installed and used without change.

In particular, the exhaust gas after-treatment device 200 can be fixed in a compact structure on the space of the rear body frame of the engine 120 through two brackets 250 and 260. It can improve the space utilization inside.

In addition, since the exhaust gas aftertreatment device 200 may be configured in a structure in which the exhaust gas post-treatment device 200 is not mounted directly on the engine 120, the exhaust gas aftertreatment device 200 does not cause a change in structural rigidity or NVH (Noise Vibration Harshness) of the engine itself. The performance and durability of an engine can be prevented from falling.

In addition, a portion of the connection pipe 270 interconnecting the exhaust gas inlet 212 side of the exhaust gas aftertreatment device 200 and the exhaust port 152 side of the turbocharger 150 connected to the exhaust manifold 140. By installing the corrugated flexible pipe 274 in the corrugated form, the vibration transmitted from the engine 120 is absorbed and buffered in the flexible pipe 274 to prevent the vibration from being immediately transmitted to the exhaust gas aftertreatment device 200. As a result, the performance of the exhaust gas aftertreatment device 200 may be stably maintained.

110: body frame 120: engine
125: Fan 150: Turbocharger
200: exhaust gas aftertreatment device 210: diesel oxidation catalyst (DOC)
212 exhaust gas inlet 220 diesel particulate filter (DPF)
222: purification gas outlet 250: first bracket
251,252: 1st, 2nd bending surface 260: 2nd bracket
262 rib 270 connection pipe

Claims (5)

In the structure of mounting the exhaust gas after-treatment device for purifying the engine exhaust gas of the combine to the engine,
The exhaust gas aftertreatment device is disposed in parallel in the longitudinal direction of the engine to be fixed using a fixing member on a body frame around the engine, and the exhaust gas inlet side of the exhaust gas aftertreatment device and the engine The exhaust side of the turbocharger connected to the exhaust manifold is connected to each other through a connecting pipe,
The connecting pipe is inclined downward from the front of the engine to the rear side at a predetermined distance from the engine while connecting the exhaust side of the turbocharger and the exhaust gas inlet side of the exhaust gas aftertreatment device,
The fixing member includes a first bracket fixed to the vehicle body frame, a second bracket coupled to the first bracket and fixed to the exhaust gas aftertreatment device.
The first bracket has a pair of first bent surfaces bent in the longitudinal direction of the exhaust gas aftertreatment device, and a second bent surface bent in a direction perpendicular to the bending direction of the first bent surface. Fastening and fastening at three points of the body frame at the same time through the first bend surface and the second bent surface,
The second bracket is provided with two independent structures bent in a 'b' shape and arranged to face each other on the outer side of the first bent surface of the first bracket, one end of each of which is in contact with the first bent surface. Fastening on the body frame at the same time through the bolt in the butted state, the other end thereof is fixed to the bottom of the exhaust gas aftertreatment apparatus, characterized in that the exhaust gas aftertreatment device mounting structure of the combine.
delete delete delete The structure of claim 1, wherein a portion of the connecting pipe is provided with a corrugated flexible pipe.
KR1020120092510A 2012-08-23 2012-08-23 Fixing structure of Exhaust Gas After treatment Device KR101969969B1 (en)

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Publication number Priority date Publication date Assignee Title
KR101701888B1 (en) * 2014-09-01 2017-02-02 국제종합기계 주식회사 Harvester
KR101710083B1 (en) * 2014-09-01 2017-02-24 국제종합기계 주식회사 Harvester
CN109854349B (en) * 2019-03-29 2024-02-27 三一重机有限公司 Exhaust gas aftertreatment device mounting structure and excavator

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