US20190120119A1

US20190120119A1 - Cooling system for a machine

Info

Publication number: US20190120119A1
Application number: US15/790,126
Authority: US
Inventors: Guillaume M. Bourgoin
Original assignee: Caterpillar Underground Mining Pty Ltd
Current assignee: Caterpillar Underground Mining Pty Ltd
Priority date: 2017-10-23
Filing date: 2017-10-23
Publication date: 2019-04-25
Also published as: AU2018250376A1

Abstract

A mining machine is provided. The machine includes a frame and an engine mounted on the frame. The machine also includes a heat exchanger and an aftertreatment system mounted on the frame. The machine further includes a cooling system disposed between the heat exchanger and the aftertreatment system. The cooling system includes a shroud member and a plurality of fans mounted on the shroud member. Each of the plurality of fans is adapted to provide a flow of air across the heat exchanger and around at least a portion of the aftertreatment system. The shroud member is split into a plurality of sections and each of the plurality of sections includes at least one of the plurality of fans therein.

Description

TECHNICAL FIELD

The present disclosure relates to a cooling system for a machine. More particularly, the present disclosure relates to the cooling system for a heat exchanger and an aftertreatment system associated with the machine.

BACKGROUND

An internal combustion engine generally employs an aftertreatment system in order to treat exhaust gas generated by the engine prior to release into the atmosphere. The aftertreatment system may include a number of components that may be required to be maintained within an operating temperature range in order to achieve optimum performance and limit premature deterioration thereof. In the engine, or a machine employing the engine, operating on or above ground or water surface, the aftertreatment system may be typically cooled by surrounding air due to heat transfer and natural convection.
However, in a hot environment, such as in underground mining applications or enclosed spaces, forced ventilation may be employed in order to achieve required heat transfer rates and to maintain the components of the aftertreatment system under the operating temperature range. In some situations, a secondary heat exchanger mounted remotely with respect to the engine or the machine may be oriented or positioned in a manner such that the secondary heat exchanger may provide forced cooling to the components of the aftertreatment system. Such an arrangement of the secondary heat exchanger may employ one or more hydraulically driven fans which may suffer from several disadvantages.
The remotely mounted secondary heat exchanger of conventional designs suffers from several disadvantages. Known remote mounted secondary heat exchangers and/or the hydraulically driven fan may add extra complexity to the system, in turn, resulting in increased system cost, increased maintenance cost and effort, increased labor cost, and so on. Also, such secondary heat exchanger may be cooled using a single fan, which, if it fails, may limit operation of the aftertreatment system and/or the engine and increase a risk of overheating the components of the aftertreatment system, and so on. Also, in some situations, such known systems may be less than ideal during an automatic shutdown of the engine due to overheating, because the forced cooling of the secondary heat exchanger may be stopped. Hence, there is a need for an improved cooling system for such machines/applications.
WIPO Patent Application Number 2015174149 describes a hydraulic shovel having an engine compartment. The engine compartment includes an engine, a cooling fan, a hydraulic pump, and an exhaust gas aftertreatment device provided above the hydraulic pump. Also, the engine compartment includes a tilt-up floor that covers over the engine and the exhaust gas aftertreatment device, and a side cover that covers a side of the hydraulic pump and the exhaust gas aftertreatment device. A horizontal flow passage that guides cooling air toward the hydraulic pump is provided between the tilt-up floor the engine/the exhaust gas aftertreatment device. A vertical flow passage that passes through the exhaust gas aftertreatment device and then follows the side cover and heads below the vehicle body is further provided. An air shielding plate that shields the vertical flow passage is provided above the hydraulic pump.

SUMMARY OF THE DISCLOSURE

In an aspect of the present disclosure, a mining machine is provided. The machine includes a frame and an engine mounted on the frame. The machine also includes a heat exchanger and an aftertreatment system mounted on the frame. The machine further includes a cooling system disposed between the heat exchanger and the aftertreatment system. The cooling system includes a shroud member and a plurality of fans mounted on the shroud member. Each of the plurality of fans is adapted to provide a flow of air across the heat exchanger and around at least a portion of the aftertreatment system. The shroud member is split into a plurality of sections and each of the plurality of sections includes at least one of the plurality of fans therein.
In another aspect of the present disclosure, a cooling system for a heat exchanger and an aftertreatment system associated with a machine is provided. The aftertreatment system is spaced from the heat exchanger. The cooling system includes a shroud member provided between the heat exchanger and the aftertreatment system. The cooling system also includes a plurality of fans mounted on the shroud member. Each of the plurality of fans is adapted to provide a flow of air across the heat exchanger and around at least a portion of the aftertreatment system. The shroud member is split into a plurality of sections and each of the plurality of sections includes at least one of the plurality of fans therein.
In yet another aspect of the present disclosure, a method for cooling a heat exchanger and an aftertreatment system associated with a machine is provided. The heat exchanger is spaced from the aftertreatment system. The method includes providing a plurality of fans between the heat exchanger and the aftertreatment system. The plurality of fans is arranged within a shroud member having a plurality of sections. The method also includes positioning at least one of the plurality of fans in each of the sections such that each of the plurality of sections include at least one of the plurality of fans therein. The method further includes providing a flow of air across the heat exchanger and at least a portion of the aftertreatment system using at least one of the plurality of sections.
Other features and aspects of this disclosure will be apparent from the following description and the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a perspective view of an exemplary machine, according to one embodiment of the present disclosure;

FIG. 2 is a perspective view of a portion of the machine of FIG. 1 with a cooling system installed therein, according to one embodiment of the present disclosure;

FIG. 3 is a perspective of the cooling system of FIG. 2, according to one embodiment of the present disclosure;

FIG. 4 is another perspective of the cooling system of FIG. 2, according to one embodiment of the present disclosure; and

FIG. 5 is a flowchart illustrating a method of working of the cooling system of FIG. 2, according to an embodiment of the present disclosure.

DETAILED DESCRIPTION

Wherever possible, the same reference numbers will be used throughout the drawings to refer to the same or the like parts. Referring to FIG. 1, an exemplary machine 100 is illustrated. More specifically, the machine 100 is an underground mining loader. The machine 100 may be adapted to perform mining activities, such as loading, hauling, and dumping of material from one location to another. In other embodiments, the machine 100 may be any other machine, such as a wheel loader, a motor grader, a truck, a tractor, a dozer, an excavator, and so on. Also, the machine 100 may be related to an industry including, but not limited to, transportation, agriculture, construction, manufacturing, mining, forestry, waste management, material handling, marine, aviation, and aerospace.
The machine 100 includes a frame 102. The frame 102 is adapted to support various components of the machine 100 thereon. The frame 102 includes a first portion 104 and a second portion 106. The first portion 104 is pivotably coupled to the second portion 106 via an articulating joint 108. The machine 100 includes an enclosure 110 mounted on the first portion 104 of the frame 102. The enclosure 110 is adapted to house a power source (not shown) therein mounted on the frame 102. The power source may be any power source known in the art, such as an internal combustion engine powered by any fuel known in the art, such as diesel, gasoline, natural gas, and/or a combination thereof; a battery, a motor, and/or a combination thereof, and so on. The power source is adapted to provide motive power to the machine 100.
The machine 100 also includes an operator cabin 112 mounted on the first portion 104 of the frame 102. The operator cabin 112 is adapted to house various controls (not shown) of the machine 100 including, but not limited to, a steering wheel, levers, pedals, joysticks, buttons, audio video devices, an operator seat, and an operator console. The controls are configured to operate and control the machine 100. The machine 100 also includes wheels 114 mounted to the first portion 104 and the second portion 106 of the frame 102 via axles 116. The wheels 114 are adapted to support and provide mobility to the machine 100 on ground.
The machine 100 includes a linkage assembly 118 mounted on the second portion 106 of the frame 102. The linkage assembly 118 includes an arm 120 movably coupled to the second portion 106 of the frame 102. The linkage assembly 118 also includes an implement 122, such as a bucket, movably coupled to the arm 120. In other embodiments, the implement 122 may include any other implement known in the art, based on application requirements. The linkage assembly 118 also includes one or more hydraulic cylinders (not shown) adapted to provide movement to the arm 120 and/or the implement 122.
The linkage assembly 118 is adapted to perform the activities, such as loading, hauling and dumping of the material from one location to another, based on application requirements. Additionally, the machine 100 may include other components and systems (not shown), such as an engine control system, a transmission system, a drive control system, a safety system, and so on, without limiting the scope of the disclosure.
Referring to FIG. 2, the machine 100 also includes a heat exchanger 202 provided within the enclosure 110. The heat exchanger 202 is mounted on the first portion 104 of the frame 102. In the illustrated embodiment, the heat exchanger 202 is a transmission fluid cooler associated with the transmission system of the machine 100. In other embodiments, the heat exchanger 202 may be any other fluid cooler associated with the machine 100, such as an engine oil cooler, a lubricant fluid cooler, a cooling fluid cooler, a refrigerant cooler, a hydraulic fluid cooler, and so on. Also, the heat exchanger 202 may be any air to fluid heat exchanger known in the art including, but not limited to, a radiator, a condenser, among others.
The machine 100 further includes an aftertreatment system 204 provided within the enclosure 110. In the illustrated FIG. 2, a portion of the enclosure 110 is omitted for purpose of explanation and visual clarity of an arrangement of the heat exchanger 202 and the aftertreatment system 204 within the enclosure 110. The aftertreatment system 204 is mounted on the first portion 104 of the frame 102. Also, the aftertreatment system 204 is disposed spaced apart with respect to the heat exchanger 202. The aftertreatment system 204 is adapted to receive and treat exhaust gas generated by the engine prior to release into the environment. The aftertreatment system 204 may include one or more components (not shown) provided in fluid communication with one another, such as a Diesel Oxidation Catalyst (DOC) unit, a Diesel Exhaust Fluid (DEF) dosing unit, a Diesel Particulate Filter (DPF) unit, a Selective Catalytic Reduction (SCR) unit, an Ammonia Oxidation Catalyst (AOC) unit, one or more conduits, and so on, based on application requirements.
Referring to FIGS. 2, 3 and 4, the machine 100 also includes a cooling system 206 provided within the enclosure 110. More specifically, in the illustrated embodiment, the cooling system 206 is removably coupled to the heat exchanger 202. In other embodiments, the cooling system 206 may be removably mounted on the first portion 104 of the frame 102. Also, the cooling system 206 is disposed between the heat exchanger 202 and the aftertreatment system 204. The cooling system 206 is adapted to provide a flow of air, as shown by arrows 208, across the heat exchanger 202 and around at least a portion of the aftertreatment system 204.
The flow of air provides heat transfer and, thus, cooling of the heat exchanger 202 and the one or more components of the aftertreatment system 204. In some embodiments, the portion of the enclosure 110 may be disposed at an angle (not shown) with respect to a longitudinal axis X-X′ associated with the aftertreatment system 204. In such a situation, the flow of air may be convergently directed over one or more temperature sensitive components associated with the aftertreatment system 204 including, but not limited to, sensors, electrical connections, electrical lines, and electronic circuitry, in order to provide forced cooling thereof.
The cooling system 206 includes a shroud member 302 (shown in FIG. 3). In the illustrated embodiment, the shroud member 302 includes a substantially rectangular configuration. In other embodiments, the shroud member 302 may include any other configuration, such as circular, trapezoidal, and so on, based on application requirements. The shroud member 302 includes a base plate 304. The base plate 304 defines a first side 306 and a second side 308 thereof. The first side 306 is disposed opposing the second side 308.
The shroud member 302 also includes a plurality of edges 310 extending away from the base plate 304. The plurality of edges 310 includes four edges, such as a first edge 312, a second edge 314, a third edge 316, and a fourth edge 318. Each of the plurality of edges 310 extend away from the base plate 304 on the first side 306. Each of the plurality of edges 310 is adapted to couple the shroud member 302 with respect to the heat exchanger 202. The shroud member 302 may be coupled with respect to the heat exchanger 202 via the plurality of edges 310 using a number of fasteners 320, such as bolts, screws, clamps, and so on. In other embodiments, the shroud member 302 may be removably mounted directly on the first portion 104 of the frame 102.
The shroud member 302 is disposed adjacent with respect to the heat exchanger 202 in a manner such that a plane of the heat exchanger 202 is parallel with respect to a plane of the shroud member 302. Also, the shroud member 302 is disposed adjacent with respect to the aftertreatment system 204 in a manner such that the longitudinal axis X-X′ associated with the aftertreatment system 204 is perpendicular with respect to the plane of the shroud member 302. It should be noted that an orientation of the shroud member 302 with respect to the heat exchanger 202 and/or the aftertreatment system 204 described herein is merely exemplary and may vary based on application requirements.
The shroud member 302 may be manufactured using any material, such as a metal, a polymer, and/or a combination thereof Also, the shroud member 302 may be manufactured using any method, such as casting, molding, fabrication, and so on. In some embodiments, the shroud member 302 may be integrally manufactured with respect to the heat exchanger 202 forming a single piece component along with the heat exchanger 202.
The cooling system 206 also includes a plurality of fans 322 mounted on the base plate 304 of the shroud member 302. In the illustrated embodiment, the plurality of fans 322 includes four fans, such as a first fan 324, a second fan 326, a third fan 328, and a fourth fan 330. Each of the plurality of fans 322 is disposed adjacent to one another. In other embodiments, the plurality of fans 322 may include any number of fans disposed adjacent to one another in any arrangement or configuration, based on application requirements. Also, each of the plurality of fans 322 is provided on the second side 308 of the base plate 304.
In other embodiments, each of the plurality of fans 322 may be provided on the first side 306 of the base plate 304, based on application requirements. In yet other embodiments, one or more of the plurality of fans 322 may be provided on the first side 306 of the base plate 304 and remaining of the plurality of fans 322 may be provided on the second side 308 of the base plate 304, based on application requirements. Each of the plurality of fans 322 is electrically operated using an electrical power source (not shown), such as an external electric power supply, external batteries, an alternator or batteries associated with the machine 100, and so on. Also, each of the plurality of fans 322 is independently operated with respect to one another.
Each of the plurality of fans 322 is adapted to provide the flow of air, as shown by the arrows 208, across the heat exchanger 202 and around at least the portion of the aftertreatment system 204. Accordingly, the base plate 304 may include a plurality of cutouts 402 (shown in FIG. 4) in order to allow passage of the flow of air across the base plate 304. In the illustrated embodiment, the plurality of cutouts 402 includes four cutouts, such as a first cutout 404, a second cutout 406, a third cutout 408, and a fourth cutout 410. Each of the first cutout 404, the second cutout 406, the third cutout 408, and the fourth cutout 410 is associated with each of the first fan 324, the second fan 326, the third fan 328, and the fourth fan 330, respectively. In other embodiments, the plurality of cutouts 402 may include any number of cutouts based on the number of the plurality of fans 322.
In the illustrated embodiment, based on a rotation and/or an orientation of each of the plurality of fans 322 on the shroud member 302, the flow of air is directed across the heat exchanger 202, the first side 306 of the base plate 304, the second side 308 of the base plate 304, and further around the one or more components of the aftertreatment system 204. More specifically, the flow of air is directed substantially along the longitudinal axis X-X′ in a manner such that the heat exchanger 202 is disposed upstream of the aftertreatment system 204 with respect to the direction of the flow of air.
In other embodiments, based on the rotation and/or the orientation of each of the plurality of fans 322 on the shroud member 302, the flow of air may be directed around the one or more components of the aftertreatment system 204, the second side 308 of the base plate 304, the first side 306 of the base plate 304, and further across the heat exchanger 202. More specifically, in such a situation, the flow of air may be directed substantially along the longitudinal axis X-X′ in a manner such that the heat exchanger 202 may be disposed downstream of the aftertreatment system 204 with respect to the direction of the flow of air.
The shroud member 302 also includes a splitting member 412 (shown in FIG. 4) provided thereon. The splitting member 412 is disposed on the first side 306 of the base plate 304. Also, the splitting member 412 extends between the first edge 312 and the third edge 316. In other embodiments, the splitting member 412 may extend between any edges or corners, or locations on the shroud member 302, such as the second edge 314 and the fourth edge 318, diagonally opposite corners, and so on. The splitting member 412 is adapted to split the shroud member 302 into a plurality of sections 414.
In the illustrated embodiment, the plurality of sections 414 includes two sections, such as a first section 416 and a second section 418. The first section 416 is disposed adjacent with respect to the second section 418. Each of the first section 416 and the second section 418 includes at least one fan of the plurality of fans 322. In the illustrated embodiment, the first section 416 includes the first fan 324 and the second fan 326 of the plurality of fans 322 therein disposed vertically adjacent with respect to one another. The second section 418 includes the third fan 328 and the fourth fan 330 of the plurality of fans 322 therein disposed vertically adjacent with respect to one another.
In other embodiments, based on an orientation and/or location of the splitting member 412 on the shroud member 302, the first section 416 and the second section 418 may include any combination of the plurality of fans 322 therein. For example, when the splitting member 412 may extend between the second edge 314 and the fourth edge 318 of the shroud member 302, the first section 416 may include the first fan 324 and the fourth fan 330 disposed horizontally adjacent with respect to one another therein, whereas the second section 418 may include the second fan 326 and the fourth fan 330 disposed horizontally adjacent with respect to one another therein, and so on.
In some embodiments, the first section 416 may include one or more additional fans therein based on the number of the plurality of fans 322. The one or more additional fans may be disposed vertically or horizontally adjacent with respect to any of the plurality of fans 322 provided therein. Also, in some embodiments, the second section 418 may include one or more additional fans therein based on the number of the plurality of fans 322. The one or more additional fans may be disposed vertically or horizontally adjacent with respect to any of the plurality of fans 322 provided therein.
Also, in some embodiments, the shroud member 302 may include a plurality of splitting members (not shown) provided thereon based on the number of the plurality of fans 322. In such a situation, each of the plurality of splitting members may define additional sections (not shown) of the plurality of sections 414, such as a third section, a fourth section, and so on based on a number of the plurality of splitting members. Each additional section of the plurality of sections 414 may include one or more fans of the plurality of fans 322, as described with reference to the first section 416 and the second section 418, based on application requirements.

INDUSTRIAL APPLICABILITY

The present disclosure relates to a method 500 for cooling the heat exchanger 202 and the aftertreatment system 204 associated with the machine 100. Referring to FIG. 5, a flowchart of the method 500 is illustrated. At step 502, the plurality of fans 322 is provided between the heat exchanger 202 and the aftertreatment system 204. More specifically, the plurality of fans 322 is arranged within the shroud member 302. The shroud member 302 includes the plurality of sections 414 provided by the splitting member 412. In the illustrated embodiment, the shroud member 302 includes a single splitting member 412 in order to provide two sections, such as the first section 416 and the second section 418. In other embodiments, the shroud member 302 may include multiple splitting members in order to provide multiple sections, such as the third section, the fourth section, and so on.
At step 504, at least one of the plurality of fans 322 is positioned in each of the sections, such that each of the plurality of sections 414 include at least one of the plurality of fans 322 therein. More specifically, in the illustrated embodiment, the first fan 324 and the second fan 326 is positioned in the first section 416. Also, the third fan 328 and the fourth fan 330 is positioned in the second section 418. In other embodiments, one or more of the first section 416 and the second section 418 may include a single fan or multiple fans positioned therein, based on application requirements. In yet other embodiments, one or more of the multiple sections may include a single fan or multiple fans positioned therein, based on application requirements.
At step 506, the flow of air, as shown by arrows 208, is provided across the heat exchanger 202 and at least the portion of the aftertreatment system 204 using at least one of the plurality of sections 414. More specifically, the flow of air may be provided using at least one of the fans positioned in at least one of the plurality of sections 414. For example, in one embodiment, any one or both of the first fan 324 and the second fan 326 may be operated in order to provide the flow of air using the first section 416. In another embodiment, additionally or optionally, any one or both of the third fan 328 and the fourth fan 330 may be operated in order to provide the flow of air using the second section 418.
Also, in the illustrated embodiment, the plurality of fans 322 is positioned downstream of the heat exchanger 202 and upstream of the aftertreatment system 204 with respect to the direction of the flow of air. More specifically, the shroud member 302 and, thus, each of the plurality of fans 322 are positioned in a manner such that the flow of air is directed across the heat exchanger 202, through the shroud member 302, and further around the one or more components of the aftertreatment system 204 along the longitudinal axis X-X′.
Alternatively, in another embodiment, the plurality of fans 322 may be positioned upstream of the heat exchanger 202 and downstream of the aftertreatment system 204 with respect to the direction of the flow of air. In such a situation, the direction of the flow of air may be reversed. More specifically, the shroud member 302 and, thus, each of the plurality of fans 322 may be positioned in a manner such that the flow of air may be directed around the one or more components of the aftertreatment system 204 along the longitudinal axis X-X′, through the shroud member 302, and further across the heat exchanger 202.
Each of the plurality of fans 322 may be electrically and independently operated with respect to one another. As such, the cooling system 206 may continue to function in situations when the engine and/or the machine 100 may breakdown or shutdown due to an operational malfunction thereof. Also, in a situation when one or more of the plurality of fans 322 may breakdown or malfunction, remaining one or more of the plurality of fans 322 may continue to be operated and provide cooling to the heat exchanger 202 and/or the one or more components of the aftertreatment system 204, in turn, limiting thermal damage thereof, reducing maintenance/repair/replacement cost, and so on.
The cooling system 206 provides a simple, efficient, and cost-effective method of cooling the heat exchanger 202 and the one or more components of the aftertreatment system 204 simultaneously. Also, the cooling system 206 includes a simple design using commonly employed components, such as the plurality of fans 322, the electrical power source, and so on, in turn, reducing system cost, system complexity, extensive system redesign, and so on. As such, the plurality of fans 322 may prove cost effective and less complex in relation to using a single or multiple hydraulic fans and related hydraulic system. The cooling system 206 may be retrofitted in any machine and/or engine with little or no modification to the existing system.
While aspects of the present disclosure have been particularly shown and described with reference to the embodiments above, it will be understood by those skilled in the art that various additional embodiments may be contemplated by the modification of the disclosed machines, systems and methods without departing from the spirit and scope of the disclosure. Such embodiments should be understood to fall within the scope of the present disclosure as determined based upon the claims and any equivalents thereof.

Claims

What is claimed is:

1. A mining machine comprising:

a frame;

an engine mounted on the frame;

a heat exchanger mounted on the frame;

an aftertreatment system mounted on the frame; and

a cooling system disposed between the heat exchanger and the aftertreatment system, the cooling system including:

a shroud member; and

a plurality of fans mounted on the shroud member, each of the plurality of fans adapted to provide a flow of air across the heat exchanger and around at least a portion of the aftertreatment system,

wherein the shroud member is split into a plurality of sections and each of the plurality of sections includes at least one of the plurality of fans therein.

2. The mining machine of claim 1, wherein the shroud member further includes a splitting member provided thereon, the splitting member adapted to split the shroud member into the plurality of sections.

3. The mining machine of claim 1, wherein the plurality of sections further includes a first section and a second section, the second section disposed adjacent to the first section.

4. The mining machine of claim 3, wherein each of the first section and the second section includes a first fan and a second fan, the second fan disposed adjacent to the first fan.

5. The mining machine of claim 1, wherein the heat exchanger is disposed upstream of the aftertreatment system with respect to a direction of the flow of air.

6. The mining machine of claim 1, wherein the heat exchanger is disposed downstream of the aftertreatment system with respect to a direction of the flow of air.

7. The mining machine of claim 1, wherein at least one of the plurality of fans is electrically operated.

8. The mining machine of claim 1, wherein the shroud member is mounted on the heat exchanger.

9. The mining machine of claim 1, wherein the heat exchanger is at least one of a radiator and a condenser.

10. A cooling system for a heat exchanger and an aftertreatment system associated with a machine, the aftertreatment system spaced from the heat exchanger, the cooling system comprising:

a shroud member provided between the heat exchanger and the aftertreatment system; and

11. The cooling system of claim 10, wherein the shroud member further includes a splitting member provided thereon, the splitting member adapted to split the shroud member into the plurality of sections.

12. The cooling system of claim 10, wherein the plurality of sections further includes a first section and a second section, the second section disposed adjacent to the first section.

13. The cooling system of claim 12, wherein each of the first section and the second section includes a first fan and a second fan, the second fan disposed adjacent to the first fan.

14. The cooling system of claim 10, wherein the heat exchanger is disposed upstream of the aftertreatment system with respect to a direction of the flow of air.

15. The cooling system of claim 10, wherein the heat exchanger is disposed downstream of the aftertreatment system with respect to a direction of the flow of air.

16. The cooling system of claim 10, wherein at least one of the plurality of fans is electrically operated.

17. The cooling system of claim 10, wherein the shroud member is mounted on the heat exchanger.

18. A method for cooling a heat exchanger and an aftertreatment system associated with a machine, the heat exchanger spaced from the aftertreatment system, the method comprising:

providing a plurality of fans between the heat exchanger and the aftertreatment system, the plurality of fans arranged within a shroud member having a plurality of sections;

positioning at least one of the plurality of fans in each of the sections such that each of the plurality of sections include at least one of the plurality of fans therein; and

providing a flow of air across the heat exchanger and at least a portion of the aftertreatment system using at least one of the plurality of sections.

19. The method of claim 18, wherein providing the plurality of fans further includes positioning the plurality of fans upstream of the heat exchanger and downstream of the aftertreatment system with respect to a direction of the flow of air.

20. The method of claim 18, wherein providing the plurality of fans further includes positioning the plurality of fans downstream of the heat exchanger and upstream of the aftertreatment system with respect to a direction of the flow of air.