Engine air pre-cleaning system

Abstract

An air management assembly for a working machine, the air management assembly having a cooling aperture defined in a plate; a cooling fan that generates a cooling airflow through the cooling aperture to a cooling device; at least one fixed filter positioned along the air inlet aperture; and a first baffle that is at least partially positioned between the cooling aperture and the air inlet aperture; wherein the first baffle directs the cooling airflow partially over the fixed filter to clear debris from the fixed filter.

Description

Technical Field

[0001] The present disclosure relates to an air management assembly, and more particularly, to an air management assembly having a baffle. Background Art

[0002] Agricultural vehicles and construction vehicles are often powered by internal combustion engines. Typically, these vehicles are used in dirty environments where the air contains dust and other particulate matter or debris. For example, agricultural vehicles operate in an environment where crop residues and dust and particulate matter are in the air. During operation, air is drawn into the engine compartment for cooling the engine and for efficient combustion in the internal combustion engine. For complete combustion and to reduce unnecessary wear on the engine, the air supply must be substantially free of particulate matter.

[0003] In harvesting or construction environments, this often requires an air filtration or cleaning system so that the air used by the vehicle for combustion or cooling is completely free of debris. Even with conventional cleaning systems, particulate matter, dust, and crop residues can clog or partially clog the air intake system. As a result, the system often needs to be cleaned at frequent intervals. Summary of the invention

[0004] One embodiment is an air management assembly for a working machine, the air management assembly having a cooling aperture defined in a plate; a cooling fan that generates a cooling airflow through the cooling aperture to a cooling device; at least one fixed filter positioned along the air inlet aperture; and a first baffle that is at least partially positioned between the cooling aperture and the air inlet aperture; wherein the first baffle directs the cooling airflow partially over the fixed filter to clear debris from the fixed filter.

[0005] In one example of this embodiment, the first baffle defines a first inlet and a first outlet, the first inlet being oriented in a substantially vertical direction. In one aspect of this example, the first outlet directs air toward the cooling aperture. In another aspect of this example, the fixed filter is at least partially positioned between the first inlet and the first outlet.

[0006] Another example has a rotating screen that substantially covers the cooling aperture and an air shroud that partially directs the cooling air flow into the cooling aperture. In one aspect of this example, the air shroud has a cutout portion, and at least a portion of the rotating screen is not blocked from the surrounding environment by the air shroud in a horizontal direction. Another aspect of this example has a shutter assembly connected to the air shroud. In addition, the shutter assembly can pivot about a pivot axis.

[0007] Yet another example has a second baffle, wherein the second baffle defines a second inlet and a second outlet, the second inlet being oriented in a substantially vertical direction.

[0008] Another embodiment is an air management assembly for a working machine, the air management assembly having a cooling assembly having a cooling device and defining a cooling orifice, the cooling assembly being configured to guide air from the surrounding environment through the cooling orifice to cool the cooling device; an air scoop assembly, the air scoop assembly guiding air from the surrounding environment through the cooling orifice; a first baffle, the first baffle being defined in the air scoop assembly to guide air from the surrounding environment into the cooling orifice along a first path; and an air intake orifice, the air intake orifice being defined in the air scoop assembly at least partially along the first baffle; wherein air from the surrounding environment enters the cooling orifice along a first path passing through the first baffle and via a second path that does not pass through the first baffle.

[0009] One example of this embodiment has a filter screen on the air inlet orifice, wherein the first path is at least partially directed through the filter screen, thereby removing debris from the filter screen as the air flows along the first path toward the cooling orifice. In another example, the air scoop assembly further defines a second baffle that provides airflow from the surrounding environment to the cooling orifice along a third path. One aspect of this example has a second orifice having a second filter screen, wherein the second orifice and the filter screen are at least partially positioned along the third path. In another aspect of this example, the first baffle has a first inlet, and the second baffle has a second inlet, wherein the first inlet and the second inlet are substantially facing in a vertical direction. In a portion of this aspect, the first baffle has a first outlet, and the second baffle has a second outlet, and the first outlet and the second outlet are defined in a pocket portion of the air scoop assembly.

[0010] In another example, the air scoop assembly has a shutter assembly connected to the air scoop assembly, wherein the shutter assembly partially defines the second path. In one aspect of this example, the shutter assembly is pivotable about a pivot axis between a first orientation and a second orientation.

[0011] Another embodiment is a work machine having a body; at least one ground engaging mechanism; an engine that selectively powers the ground engaging mechanism, the engine being fluidly connected to an engine air intake aperture to provide air to the engine to assist in the combustion of a fuel; a radiator that is fluidly connected to at least one fluid system of the work machine to cool a fluid used by the fluid system; a cooling fan that draws air from the surrounding environment through the cooling aperture and past the radiator; an air scoop assembly that is at least partially positioned around the cooling aperture and directs air from the surrounding environment through the cooling aperture; and a first baffle that is defined in the air scoop assembly to direct air from the surrounding environment into the cooling aperture along a first path; wherein the engine air intake aperture is at least partially defined in the air scoop assembly along the first baffle; further, wherein the cooling fan draws air from the surrounding environment through the air scoop assembly along a first path that passes through the first baffle and via a second path that does not pass through the first baffle.

[0012] In one example of this embodiment, the air scoop assembly further defines a second baffle that provides airflow from the ambient environment to the cooling aperture along a third path. The first baffle has a first inlet, and the second baffle has a second inlet, and the first inlet and the second inlet are substantially facing in a vertical direction. In one aspect of this example, the air scoop assembly has a louver assembly that is connected to the air scoop assembly and positioned between the first baffle and the second baffle, wherein the louver assembly partially defines the second path, and the louver assembly can be pivoted about a pivot axis between a first orientation and a second orientation. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The above aspects of the present disclosure and the manner of obtaining them will become more apparent, and the present disclosure itself can be better understood, by referring to the following description of the embodiments of the present disclosure in conjunction with the accompanying drawings, in which:

[0014] Figure 1 is a side view of an agricultural combine harvester with an air scoop.

[0015] Figure 2a is an elevated perspective view of the exploded air scoop assembly.

[0016] Figure 2b is a bottom perspective view of another embodiment of an air scoop assembly separated from a combine harvester.

[0017] Figure 3 yes Figure 2b Elevated side view of the air scoop assembly with the outer panels removed.

[0018] Figure 4a is an elevated perspective view of another embodiment of an air scoop assembly.

[0019] Figure 4b yes Figure 4a An elevated perspective view of the air scoop assembly with the shutter assembly in a reduced configuration;

[0020] Figure 5a yes Figure 3 A front view of an air scoop assembly; and

[0021] Figure 5b is a front view of a different embodiment of an air scoop assembly with the outer panels removed.

[0022] Corresponding reference numerals indicate corresponding parts throughout the several views. DETAILED DESCRIPTION

[0023] In order to promote an understanding of the principles of the present disclosure, reference will now be made to the embodiments described herein and shown in the accompanying drawings, and specific language will be used to describe these embodiments. However, it should be understood that this is not meant to limit the scope of the present disclosure, and that such changes and further modifications to the illustrated apparatus and methods, as well as such further applications of the principles of the present disclosure illustrated therein, may be envisioned by those skilled in the art to which the present disclosure relates.

[0024] Referring now to the drawings, and more particularly to the Figure 1 , a work vehicle in the form of an agricultural harvesting machine such as an agricultural combine harvester 10 is shown. The work vehicle may also be in the form of different types of vehicles used in dirty or debris-filled operating environments, such as agricultural tractors, construction equipment, forestry equipment, etc. The combine harvester 10 may include a support structure or body 12 having a ground engaging mechanism 14 extending from the body 12. Although the combine harvester 10 is shown as having wheels 14, it may also have ground engaging tracks, either full tracks or half tracks. The combine harvester 10 also has a feed chamber 16 through which harvested crop material is fed into the combine harvester 10 for processing. Once processed, the harvested crop material is stored in a grain box 18 in the combine harvester 10 and unloaded from the combine harvester 10 by an unloading auger 20. The operation of the combine harvester 10 is controlled by an operator cab 22.

[0025] Mechanical power for the combine harvester 10 is provided by an internal combustion engine housed in an engine compartment 24 in the rear of the combine harvester 12. A radiator in the engine compartment 24 is used to circulate cooling fluid through the internal combustion engine. The combine harvester 10 has a plurality of body panels surrounding the sides and rear of the combine harvester, including but not limited to a rear panel 30 adjacent to the engine compartment 24 where the radiator is located, a left side panel, a right side panel 32, and a radiator door panel 34 having an air scoop 40.

[0026] Now refer to Figure 2a and Figure 2b , showing the air scoop assembly 200 ( Figure 2a )、201( Figure 2b ). In addition, the air scoop assembly 200 is shown in an exploded form, with several components spaced apart from each other. Although the air scoop assemblies 200, 201 are described herein with reference to the combine harvester 10, the present disclosure contemplates the use of the embodiments discussed herein for any type of work machine. More specifically, the embodiments discussed herein may also be applied to work machines in construction and forestry, to give a few non-exclusive examples of additional applications. In addition, although the air scoop assemblies 200, 201 may have some structural differences, common components will be referred to using the same figure numbers.

[0027] Either embodiment 200, 201 may have a first plate 202 positioned along the work machine side of the respective air scoop assembly 200, 201. The first plate 202 may be one or more of the panels of the combine harvester 10 discussed herein, or may be a separate panel connected to the right side panel 32 or the radiator door panel 34. Furthermore, the first plate 202 may be any structure that defines an aperture that fluidly connects components of the combine harvester 10 to an ambient environment 204. The ambient environment 204 may be air and debris surrounding the combine harvester 10.

[0028] The air scoop assembly 201 may also have a first side panel 206 and a second side panel 208 and a bottom panel 212 extending from the first panel 202 away from the combine harvester 10. In addition, an outer panel 210 may be connected to the side panels 206, 208 and the bottom panel 212 to generally form a pocket therebetween. In other words, the panels 202, 206, 208, 210, 212 may be connected to one another to control an area of ​​the air scoop assembly 201 that allows air and other debris from the surrounding environment 204 to enter the engine and the engine compartment 24 and other spaces.

[0029] Although the air scoop assembly 201 is described as being formed from the panels 202, 206, 208, 210, 212, other embodiments contemplated herein, such as the air scoop assembly 200, may utilize molded materials to construct the air scoop assembly 200. In a non-exclusive example, part or all of the air scoop assembly 200 may be formed from plastic, fiberglass, carbon fiber, etc., and formed from curved three-dimensional intersections (interchanges) rather than from a plurality of shaped parts such as those used in the present invention. Figure 2b The air scoop assembly 201 is shown formed of panels defined at substantially right angles relative to each other.

[0030] The air scoop assembly 200, 201 can be positioned along the cooling aperture 224 defined in the first plate 202. The cooling aperture 224 can be a through hole in the first plate 202 that allows air to enter the engine compartment 24 and other spaces to allow the combine harvester 10 to function as expected. More specifically, air can be drawn through the air scoop assembly and the cooling aperture 224 using a cooling fan 226 or the like. The cooling fan 226 can draw air through the air scoop assembly 200 and the cooling aperture 224 and through a cooling device 228 or the like. The cooling fan 226 can be positioned in front of or behind the cooling device 228. In addition, the cooling device 228 can have one or more radiators positioned therein to cool the fluid utilized by the combine harvester 10. In a non-exclusive example, the cooling device 228 can have a plurality of radiators to facilitate cooling of engine oil, hydraulic fluid, engine charge air, engine coolant, etc.

[0031] In one aspect of the present disclosure, the air scoop assembly 200, 201 has a first baffle 214 defined therein to define a first path 302 (see FIG. 3 ) for air to enter the air scoop assembly 200, 201 from the ambient environment 204. Figure 3 ). More specifically, the first baffle 214 can be defined by a first baffle wall 216 extending from the first plate 202 to the outer plate 210. The first baffle 214 can define a first inlet 218 at the uppermost portion of the first baffle 214, and be oriented with the opening facing the vertical direction 220. The first inlet 218 can be generally oriented in the vertical direction 220 so that air entering the first baffle 214 from the surrounding environment 204 is drawn from the upper portion of the air scoop assembly 200, 201. Figure 2a In the exploded view of the air scoop assembly 200 of FIG. 1 , the baffle wall 216 is shown as being spaced apart from the outer panel 210. However, in the assembled configuration, the baffle wall 216 extends to the outer panel 210 to define the first path 302 discussed herein.

[0032] In another aspect of the present disclosure, the air scoop assembly 201 may have a second baffle 230 defined therein to define a third path 304 (see FIG. 2 ) for air to enter the air scoop assembly 201 from the ambient environment 204. Figure 3 ). More specifically, the second baffle 230 can be defined by a second baffle wall 232 extending from the first plate 202 to the outer plate 210. The second baffle 230 can define a second inlet 234 at an uppermost portion of the second baffle 230 and oriented toward the vertical direction 220. The second inlet 234 can be generally oriented along the vertical direction 220 so that air entering the second baffle 230 from the ambient environment 204 is drawn from an upper portion of the air scoop assembly 201.

[0033] Although in Figure 2b214 and the second baffle 230 are shown, but the present disclosure also contemplates utilizing only one of the first baffle 214 or the second baffle 230. For example, the air scoop assembly 200 may not have the second baffle 230 at all. Alternatively, Figure 2b In an embodiment, there may be no first baffle 214 at all, and the air scoop assembly 201 may only have the second baffle 230. In addition, other embodiments contemplated herein have more than two baffles. Therefore, the present disclosure contemplates varying the location and number of baffles.

[0034] Now refer to Figure 3 , a cross-sectional view 300 of the air scoop assembly 201 is shown with the outer panel 210 removed. More specifically, in Figure 3 201. The air paths 302, 304, 306 of the air scoop assembly 201 are shown in FIG. The air paths 302, 304, 306 are generally intended to illustrate the basic flow paths of fluid from the ambient environment 204 into the cooling apertures 224 when the cooling fan 226 draws air therethrough. More specifically, the first path 302 may flow through the first inlet 218 and into the channel of the first baffle 214. The first path 302 may flow downward toward the base plate 212 until it reaches the first outlet 308, which is partially defined by the space between the baffle wall 216 and the base plate 212. The first path 302 may then flow through the rotating filter 244 and into the cooling apertures 224.

[0035] Air and surrounding debris may also enter the air scoop assembly 201 from the second path 306. The second path 306 may allow air to enter the air scoop assembly 201 through the second inlet 246 defined between the outer panel 210, the first baffle wall 216, and the second baffle wall 232 (or, when the second baffle 230 is not present, the side panel 206). The second path 306 may provide a flow path with a maximum flow rate into the cooling apertures 224. In other words, the second inlet 246 may be the largest inlet of the air scoop assembly 201 and, thereby, provide the maximum flow rate into the cooling apertures 224.

[0036] The size of the second inlet 246 may vary according to the different embodiments contemplated herein. More specifically, Figure 2b A cutout portion 222 is shown that provides an arcuate cutout of the outer panel 210. The cutout portion 222 may allow a greater flow of fluid from the ambient environment 204 into the cooling aperture 224 through the second inlet 246. Alternatively, Figure 4a and Figure 4b Another embodiment of the present disclosure is shown, in which the shutter assembly 402 can be connected to the outer panel 210 or other components of the corresponding air scoop assembly 400. Figure 4a and Figure 4bIn the embodiment of the present invention, the second inlet 246 can be partially guided through the shutter assembly 402. In addition, the shutter assembly 402 can be pivoted about the axis 404 to further change the size of the second inlet 246.

[0037] Although the second inlet 246 is shown here as being between the first baffle 214 and the second baffle 230, other embodiments may not have the second baffle 230 at all. In these embodiments, the second inlet 246 may be defined by the first baffle wall 216, the outer panel 210, the first panel 202, and the first side panel 206. In this embodiment, the second inlet 246 may be larger than an embodiment having the second baffle 230 in a similarly sized air scoop assembly. Therefore, the present disclosure contemplates utilizing only the first baffle 214, with air entering the aperture 224 through either the first inlet 218 or the second inlet 246.

[0038] Now refer to Figure 5a and Figure 5b , a fixed filter 502 is shown as being positioned at least partially along the first path 302. The fixed filter 502 can be a filter covering an intake aperture 504 defined in the first plate 202. The intake aperture 504 can be fluidly connected to an air intake for an internal combustion engine of the engine compartment 24. As is known in the art, the internal combustion engine mixes fuel with ambient air to initiate controlled combustion of the mixture. In one aspect of the present disclosure, air required by the internal combustion engine can be obtained through the intake aperture 504.

[0039] In one aspect of the present disclosure, the first path 302 can be at least partially directed through the fixed filter 502 to remove debris from the fixed filter, thereby ensuring that sufficient air is obtained through the fixed filter 502 to reach the engine. As described herein, the cooling fan 226 can draw air through the orifice 224 along the first path 302. As the air moves along the first path 302, the air can pass through the fixed filter 502 and remove at least a portion of the debris located on the fixed filter. The air can then travel along the first path 302 and through the orifice 224. The rotating filter 244 can capture the debris removed from the fixed filter 502 for further cleaning and vacuumed therefrom.

[0040] Although a portion of the air moving along the first path 302 can be drawn into the engine through the intake aperture 504, the flow rate requirement of the cooling fan 226 can provide a substantially turbulent flow of fluid across the fixed filter 504 to remove debris from the fixed filter. In other words, although the engine does require air to flow through the intake aperture 504, more air passes through the intake aperture 504 and is drawn through the aperture 224 by the cooling fan 226.

[0041] In another aspect of the present disclosure, the first inlet 218 and the second inlet 234 are positioned to face substantially in the vertical direction 220. That is, the first inlet 218 and the second inlet 234 draw air from the surrounding environment at the uppermost portion of the corresponding air scoop assembly. Typically, the dust and debris laden air stirred up by the equipment during operation will rise several feet above the ground level. By positioning the first inlet 218 and the second inlet 234 along the uppermost portion of the air scoop assembly, the air drawn into the first baffle 214 and the second baffle 230 is substantially cleaner relative to the air positioned closer to the ground below. This in turn reduces the amount of foreign debris that must be screened and filtered from the air entering through the fixed filter 502 or the rotating filter 244.

[0042] Now refer to Figure 4a and Figure 4b , another embodiment of the air scoop assembly 400 is shown. In this embodiment of the air scoop assembly 400, the shutter assembly 402 can be pivotally connected to the air scoop assembly 400 between the first baffle wall 216 and the second baffle wall 232. More specifically, the shutter assembly 402 can have a plurality of shutters 406 pivotally connected between a first member 408 and a second member 410. Each of the plurality of shutters 406 can be individually pivoted relative to the first member 408 and the second member 410 to thereby redirect air entering the air scoop assembly 400 along the second inlet 246. In addition, each of the first member 408 and the second member 410 can be pivotally connected to the air scoop assembly 400 at one end along the axis 404. Therefore, the first member 408 and the second member 410 can be pivoted outwardly about the axis 404 to reposition the plurality of shutters 406 as shown in FIG. Figure 4a Alternatively, the first member 408 and the second member 410 may be pivoted inwardly about the axis 404 to reposition the plurality of shields 406 in an increased orientation as shown. Figure 4b In the reduced orientation 401 shown.

[0043] Now refer to Figure 5b , shows another embodiment of the air scoop assembly 500, wherein the outer panels are removed. Figure 5b In the embodiment, Figure 5a The second baffle wall 506 can be at least partially curved compared to the baffle wall 232. This configuration can provide a relatively large inlet 508 while allowing the baffle wall 506 to bypass the support structure for rotating the filter screen 244. In addition, a neck 510 can be formed between the baffle wall 506 and the first side plate 206. In one aspect of this embodiment, when air is drawn along the third path 304, the neck 510 can cause the flow velocity along the second baffle to accelerate.

[0044] In addition, Figure 5bIn one non-exclusive embodiment shown, a second screen 512 can be defined along the third path 304. The second screen 512 can cover a second aperture 514 defined in the first plate 202. Furthermore, the second aperture 514 can be fluidly connected to the engine or nacelle 24. Figure 5b In an embodiment of the present invention, the neck 510 can provide an increased airflow velocity across the second filter 512, thereby further removing any debris located on the second filter. In other words, the increased airflow caused by the neck 510 can remove debris and clean the second filter 512 in a similar manner as discussed herein with reference to the fixed filter 502. In addition, in one aspect of the present disclosure, both the intake aperture 504 and the second aperture 514 can be fluidly connected to the intake of the engine. In this configuration, if one of the apertures 504, 514 is substantially blocked by debris, the other of the apertures 504, 514 can provide sufficient air flow to the engine to allow complete combustion of the fuel.

[0045] In one aspect of the present disclosure, by utilizing a baffle to define a first flow path through a fixed filter in combination with a larger second inlet, a cooling device can have sufficient airflow to cool the work machine while still providing sufficient turbulence through the fixed filter to remove debris from the filter. In other words, the needs of the cooling device can be met by opening the air hood assembly to the surrounding environment. However, doing so reduces the airflow across any fixed filter positioned therein. By implementing the use of a baffle as explained in the present disclosure, a cooling device can obtain sufficient air flow rate while the fixed filter is positioned along the baffle to ensure that there is sufficient air flow rate to remove debris formed therein.

[0046] Although the present invention is shown as being used with one type of combine harvester, the present invention may be used with other combine harvester types, including conventional stalk-stalker combines and hybrid combines having a transverse threshing drum and a rotary separator, as well as other types of work machines.

[0047] Although exemplary embodiments in conjunction with the principles of the present disclosure have been described herein, the present disclosure is not limited to these embodiments. On the contrary, the present application is intended to cover any variation, application or modification of the present disclosure using the basic principles of the present disclosure. In addition, the present application is intended to cover such deviations from the present disclosure within the scope of known or customary practice in the field to which the present disclosure belongs.

Claims

1. An air management assembly for a work machine, comprising: cooling apertures defined in the plate; a cooling fan that generates a cooling airflow from an air intake side of the cooling aperture to a cooling device; at least one fixed filter positioned along the air inlet aperture; as well as a first baffle positioned at least partially between the cooling aperture and the intake aperture on the intake side; The first baffle guides the cooling airflow to partially pass over the fixed filter to remove debris on the fixed filter.

2. The air management assembly of claim 1, further wherein the first baffle defines a first inlet and a first outlet, the first inlet being oriented in a substantially vertical direction. 3 . The air management assembly of claim 2 , further wherein the first outlet directs air toward the cooling aperture.

4. The air management assembly of claim 2, further wherein the fixed filter is at least partially positioned between the first inlet and the first outlet. 5 . The air management assembly of claim 1 , further comprising a rotating filter screen and an air guide cover, the rotating filter screen substantially covering the cooling aperture, the air guide cover partially guiding the cooling airflow into the cooling aperture. 6 . The air management assembly according to claim 5 , further wherein the air guide cover has a cutout portion, and at least a portion of the rotating filter is not blocked by the air guide cover in a horizontal direction to be isolated from the surrounding environment.

7. The air management assembly of claim 5, further comprising a louver assembly coupled to the air scoop.

8. The air management assembly of claim 7, further wherein the shutter assembly is pivotable about a pivot axis.

9. The air management assembly of claim 2, further comprising a second baffle, wherein the second baffle defines a second inlet and a second outlet, the second inlet being oriented in a substantially vertical direction.

10. An air management assembly for a work machine, comprising: a cooling assembly having a cooling device and defining a cooling aperture, the cooling assembly being configured to direct air from an ambient environment through the cooling aperture to cool the cooling device; an air shroud assembly that directs air from the ambient environment through the cooling apertures; a first baffle defined in the air scoop assembly to direct air from the ambient environment into the cooling apertures along a first path; as well as an air inlet aperture defined in the air scoop assembly at least partially along the first baffle; The air from the surrounding environment enters the cooling aperture along the first path passing through the first baffle and via a second path not passing through the first baffle.

11. The air management assembly of claim 10, further comprising a filter on the air inlet aperture, wherein: The first path is directed at least partially through the screen to remove debris from the screen as air flows along the first path toward the cooling apertures.

12. The air management assembly of claim 10, further wherein the air scoop assembly further defines a second baffle that provides airflow from the ambient environment to the cooling apertures along a third path.

13. The air management assembly of claim 12, further comprising a second aperture having a second filter, wherein the second aperture and filter are positioned at least partially along the third path.

14. The air management assembly of claim 12, further wherein the first baffle has a first inlet and the second baffle has a second inlet, wherein the first inlet and the second inlet face in a substantially vertical direction.

15. The air management assembly of claim 14, further wherein the first baffle has a first outlet and the second baffle has a second outlet, the first outlet and the second outlet being defined in a pocket portion of the air scoop assembly.

16. The air management assembly of claim 10, further wherein the scoop assembly has a louver assembly coupled to the scoop assembly, wherein the louver assembly partially defines the second path.

17. The air management assembly of claim 16, further wherein the shutter assembly is pivotable about a pivot axis between a first orientation and a second orientation.

18. A working machine comprising: ontology; at least one ground engaging mechanism; an engine selectively powering the ground engaging mechanism, the engine fluidly connected to an engine air intake aperture to provide air to the engine to assist in combustion of a fuel; a radiator fluidly connected to at least one fluid system of the work machine to cool a fluid used by the fluid system; a cooling fan that draws air from the surrounding environment through cooling apertures and across the radiator; an air shroud assembly positioned at least partially around the cooling aperture and directing air from the ambient environment through the cooling aperture; as well as a first baffle defined in the air scoop assembly to direct air from the ambient environment into the cooling apertures along a first path; wherein the engine air intake aperture is defined in the air scoop assembly at least partially along the first baffle; Further, the cooling fan draws air from the surrounding environment along the first path through the first baffle and through the air duct assembly via a second path that does not pass through the first baffle.

19. The work machine of claim 18, further wherein the air scoop assembly further defines a second baffle that provides airflow from the ambient environment to the cooling apertures along a third path, Further, the first baffle has a first inlet, and the second baffle has a second inlet, wherein, The first inlet and the second inlet face substantially in a vertical direction.

20. The work machine according to claim 19, further wherein the air scoop assembly has a shutter assembly connected to the air scoop assembly and positioned between the first baffle and the second baffle, wherein: the shutter assembly partially defining the second path; Further, the shutter assembly is capable of pivoting about a pivot axis between a first orientation and a second orientation.

Images