Filtration system and integrated heat exchanger

Abstract

A filtration system includes a filter cartridge, a filter head, and a plate. The filter head is coupled to the filter cartridge and includes a main body, a first wall extending from the main body towards the filter cartridge, and a second wall extend from the main body towards the filter cartridge and radially inward from the first wall. An outer chamber is at least partially defined between the first wall and the second wall. An inner chamber is at least partially defined radially inward of the second wall. The plate is coupled to the filter head and includes an end wall defining an aperture that enables fluid communication between the inner chamber and the filter cartridge, a first sealing member forming a first seal between the plate and the first wall, and a second sealing member forming a second seal between the plate and the second wall.

Description

Atty. Dkt. No.: 137878-3377FILTRATION SYSTEM AND INTEGRATED HEAT EXCHANGERCROSS-REFERENCE TO RELATED APPLICATION[00011 This patent application claims the benefit and priority to Indian Provisional Application No. 202541015983, filed February 24, 2025, the entire disclosure of which is hereby incorporated by reference herein.SUMMARY

[0002] The present application relates generally to filtration systems for use with engine systems.BACKGROUND

[0003] Filtration systems may be used to separate contaminates from a fluid to protect downstream devices from damage (e.g., corrosion, clogging, etc.). For example, filtration systems may protect downstream devices by including a filter element to separate contaminants form the fluid that may damage the downstream devicesSUMMARY

[0004] Various embodiments provide for a filtration system. The filtration system includes a filter cartridge, a filter head, and a plate. The filter head is coupled to the filter cartridge. The filter head includes a filter head main body, a first wall extending from the filter head main body towards the filter cartridge, and a second wall extend from the filter head main body towards the filter cartridge and radially inward from the first wall. An outer chamber is at least partially defined between the first wall and the second wall. An inner chamber is at least partially defined radially inward of the second wall. The plate is coupled to the filter head. The plate includes an end wall defining an elongated aperture that enables fluid communication between the inner chamber and the filter cartridge, a first sealing member configured to form a14920-9737-0512Atty. Dkt. No.: 137878-3377first seal between the plate and the first wall, and a second sealing member configured to form a second seal between the plate and the second wall.

[0005] Another embodiment relates to a plate for a filtration system. The plate includes an axial wall defining a center axis. The axial wall is spaced from the center axis and defines an opening. The plate includes a first end wall extending radially outward from a first end of the axial wall, a second end wall extending radially outward from a second end of the axial wall, opposite the first end of the axial wall, one or more first fins extending from the first end wall and away from the second end wall, the one or more first fins extending in a circumferential direction relative to the center axis, and a first projection extending from the first end wall to the second end wall, the first projection defining an elongated opening that extends through the first end wall, the second end wall, and the first projection.

[0006] Yet another embodiment relates to a filtration system. The filtration system includes a filter cartridge, a filter head coupled to the filter cartridge, and a plate. The filter head includes a filter head main body, a first wall extending from the filter head main body towards the filter cartridge, and a second wall extend from the filter head main body towards the filter cartridge and radially inward from the first wall. The plate is coupled to the filter head. The plate includes an axial wall defining a center axis, the axial wall spaced from the center axis and defining an opening, a first end wall extending radially outward from a first end of the axial wall, and a second end wall extending radially outward from a second end of the axial wall, opposite the first end of the axial wall. A first chamber is defined between the first end wall and the filter head main body. A second chamber is defined between the first end wall, the second end wall, the axial wall, and the first wall.BRIEF DESCRIPTION OF THE DRAWINGS

[0007] The foregoing and other features of the present disclosure will become more fully apparent from the following description and appended claims, taken in conjunction with the accompanying drawings. Understanding that these drawings depict only several implementations in accordance with the disclosure and are, therefore, not to be considered24920-9737-0512Atty. Dkt. No.: 137878-3377limiting of its scope, the disclosure will be described with additional specificity and detail through use of the accompanying drawings

[0008] FIG. 1 is a side view showing a filtration system, according to an example embodiment.

[0009] FIG. 2 is a cross sectional view showing a portion of the filtration system of FIG. 1.

[0010] FIG. 3 is a bottom view of a filter head of the filtration system of FIG. 1.

[0011] FIG. 4 is a bottom cross-sectional view of the filtration system of FIG. 1.

[0012] FIG. 5 is a perspective view of a plate of the filtration system of FIG. 1, according to an example embodiment.

[0013] FIG. 6 is a top view of the plate of FIG. 5.

[0014] FIG. 7 is a side cross-sectional view of the plate of FIG. 5.

[0015] FIG. 8 is a front cross-sectional view of the filtration system of FIG. 1.

[0016] FIG. 9 is a bottom cross-sectional view of the filtration system of FIG. 1.

[0017] FIG. 10 is a top cross-sectional view of the filtration system of FIG. 1.

[0018] FIG. 11 is a bottom view of a filter head usable with the filtration system of FIG. 1, according to an example embodiment.

[0019] FIG. 12 is a bottom view of a filter head usable with the filtration system of FIG. 1, according to another example embodiment.|0020| FIG. 13 is a bottom view of a plate usable with the filtration system of FIG. 1, according to an example embodiment.[00211 FIG. 14 is a front cross-sectional view showing a portion of a filtration system, according to an example embodiment.34920-9737-0512Atty. Dkt. No.: 137878-3377[0022} FIG. 15 is a side cross-sectional view showing a portion of the filtration system of FIG.14.

[0023] FIG. 16 is a top cross-sectional view showing a portion of the filtration system of FIG.14.

[0024] FIG. 17 is another top cross-sectional view showing a portion of the filtration system of FIG. 14.

[0025] FIG. 18 is top perspective view of a plate of the filtration system of FIG. 14.

[0026] FIG. 19 is a bottom perspective view of the plate of FIG. 18.

[0027] FIG. 20 is a top perspective view of a plate usable with the filtration system of FIG. 14, according to an example embodiment.

[0028] FIG. 21 is a bottom perspective view of the plate of FIG. 20.

[0029] Reference is made to the accompanying drawings throughout the following detailed description. In the drawings, similar symbols typically identify similar components unless context dictates otherwise. The illustrative implementations described in the detailed description, drawings, and claims are not meant to be limiting. Other implementations may be utilized, and other changes may be made, without departing from the spirit or scope of the subject matter presented here. It will be readily understood that the aspects of the present disclosure, as generally described herein, and illustrated in the figures, can be arranged, substituted, combined, and designed in a wide variety of different configurations, all of which are explicitly contemplated and made part of this disclosure.DETAILED DESCRIPTION[0030} Referring to the Figures generally, various embodiments disclosed herein relate to filtration system with an integrated heat exchanger. The heat exchanger is advantageously inside of the filtration system, thereby reducing or eliminating the need for heat exchangers external to the filtration system (e.g., upstream or downstream of the filtration system).44920-9737-0512Atty. Dkt. No.: 137878-3377

[0031] The embodiments shown and described in further detail herein relate to an outside-in flow design for a filtration system. It should be understood that the embodiments described herein may be utilized in other filtration system arrangements. For example, the embodiments described herein may be utilized in an inside-out flow design and / or any other type of filtration systems. Additionally, the filtration system may include more or fewer components than as shown in the Figures. Accordingly, references to various components being within, downstream, exterior, upstream, and the like are relative to the embodiments shown in Figures, and it should be understood that other embodiments, such as an inside-out flow design for a filtration system, may have the same or similar components provided in a different arrangement

[0032] Now referring to FIGS. 1 and 2, a filtration system 100 is shown, according to an example embodiment. It should be understood that the filtration system 100 may include more or fewer components than as shown in FIGS. 1 and 2. The filtration system 100 is configured to receive an unfiltered fluid (e.g., fuel, oil, etc ), filter the fluid, and provide the filtered fluid to a downstream device, such as an engine. As shown, the filtration system 100 includes a filter head 110 and a filter cartridge 140. The filter cartridge 140 is configured to be coupled to the filter head 110. The filtration system 100 also includes a heat exchanger member (e.g., a heater plate, a heat exchanger plate, etc.), shown as a plate 200. The plate 200 is coupled to the filter head 110. In some embodiments, the filter head 110 and the plate 200 define a filter head assembly.

[0033] Referring now to FIG. 3, a bottom view of the filter head 110 is shown. The filter head 110 includes a filter head body 112. The filter head body 112 defines one or more ports, shown as a first port 114, a second port 115, a third port 116, and a fourth port 117. The filter head body 112 also defines a central port 118. The filter head body 112 includes a main body 120 (e.g., a filter head main body), a first wall 122 (e.g., an outer wall), a second wall 124 (e.g., an intermediate wall), and a third wall 126 (e.g., an inner wall). The filter head body 112 also includes a first radial wall 125 and a second radial wall 127. The filter head body 112 at least partially defines an inner chamber 130 and an outer chamber 132. The filter head body 112 also includes one or more projections 138.54920-9737-0512Atty. Dkt. No.: 137878-3377[0034} In some embodiments, the filter head 110 is made from a plastic material. In other embodiments, the filter head 110 is made from a metallic material, such as steel or aluminum.

[0035] The first port 114 is an inlet port in fluid receiving communication with an upstream device and in fluid providing communication with an interior of the filtration system 100. The first port 114 is in fluid providing communication with the inner chamber 130. For example, the first port 114 may be configured to provide an unfiltered fluid, such as fuel, oil, etc., to the inner chamber 130.

[0036] The second port 115 is an outlet port in fluid receiving communication with the interior of the filtration system 100 and in fluid providing communication with a downstream device, such as an engine. The second port 115 is in fluid receiving communication with the filter cartridge 140 and / or the central port 118. For example, the second port 115 may be configured to provide a filtered fluid to a downstream device, from the central port 118. In other embodiments, the first port 114 is configured as the outlet port and the second port 115 is configured as the inlet port.

[0037] The third port 116 is an inlet port in fluid receiving communication with an upstream device and in fluid providing communication with an interior of the filtration system 100. The third port 116 is in fluid providing communication with the outer chamber 132. For example, the third port 116 may be configured to provide a working fluid, referred to herein as a “coolant,” to the outer chamber 132. Although the embodiments described herein refer to the working fluid as a “coolant,” it should be understood that the working fluid may be a different type of fluid other than a coolant. For example, the working fluid may be a recirculated fuel or a return fuel, which may be received from another component or system, such as an engine.

[0038] The fourth port 117 is an outlet port in fluid receiving communication with the interior of the filtration system 100 and in fluid providing communication with a downstream device, such as a fluid reservoir. The fourth port 117 is in fluid receiving communication with the outer chamber 132. For example, the fourth port 117 may be configured to provide the coolant to a downstream device, from the outer chamber 132. In other embodiments, the third port 116 is configured as the outlet port and the fourth port 117 is configured as the inlet port.64920-9737-0512Atty. Dkt. No.: 137878-3377[0039} The central port 118 extends through the filter head body 112. The central port 118 is centered on a center axis of the filtration system 100. The center axis extends through a radial center of the filtration system 100, a center of the filter head 110, and / or a center of the filter cartridge 140. The central port 118 is in fluid receiving communication with the interior of the filtration system and in fluid providing communication with the second port 115.[0040} As used herein, the term “axis” describes a theoretical line extending through at least a portion of an object, such as a centroid (e.g., center of mass, geometric center, etc.) of an object. In some arrangements, the object is centered on the axis. The object is not necessarily cylindrical (e.g., a non-cylindrical shape may be centered on an axis, etc.). Furthermore, the object is not necessarily on the axis (e.g., a centroid of a hollow object may be on the axis, but no portion of the object needs to be on the axis).[0041 } The main body 120 is positioned at a first end of the filter head 110, away from the filter cartridge 140. The first port 114, the second port 115, the third port 116, and the fourth port 117 extend through the main body 120 of the filter head 110. That is, the main body 120 at least partially defines the first port 114, the second port 115, the third port 116, and the fourth port 117. The main body 120 also defines a first aperture 134, a second aperture 135, and a third aperture 136.[0042} The first aperture 134 extends axially through the main body 120. The first aperture 134 enables fluid communication between the first port 114 and the inner chamber 130. For example, the fluid may flow from the first port 114 and into the inner chamber 130 via the first aperture 134.

[0043] The second aperture 135 extends axially through the main body 120. The second aperture 135 enables fluid communication between the third port 116 and the outer chamber 132. For example, the coolant may flow from the third port 116 and into the outer chamber 132 via the second aperture 135.[0044} The third aperture 136 extends axially through the main body 120. The third aperture 136 enables fluid communication between the outer chamber 132 and the fourth port 117. For 74920-9737-0512Atty. Dkt. No.: 137878-3377example, the coolant may flow from the outer chamber 132 and into the fourth port 117 via the third aperture 136.

[0045] The first wall 122 extends away from the main body 120 towards a second end of the filter head 110, opposite the first end. For example, the first wall 122 extends towards the filter cartridge 140 and / or the plate 200 in a substantially axial direction. The first wall 122 is positioned at an outer periphery of the filter head 110.

[0046] The second wall 124 extends away from the main body 120 towards a second end of the filter head 110, opposite the first end. For example, the second wall 124 extends towards the filter cartridge 140 and / or the plate 200 in a substantially axial direction. The second wall 124 is positioned radially inward from the first wall 122. The outer chamber 132 is at least partially defined between the first wall 122 and the second wall 124. The inner chamber 130 is at least partially defined by the second wall 124. For example, the inner chamber 130 is radially inward of the second wall 124.

[0047] The first radial wall 125 extends from the main body 120 towards the second end of the filter head 110, between the first wall 122 and the second wall 124. For example, the first radial wall 125 extends towards the filter cartridge 140 and / or the plate 200 in a substantially axial direction. The first radial wall 125 is positioned in the outer chamber 132, between the second aperture 135 and the third aperture 136.

[0048] The third wall 126 extends away from the main body 120 towards a second end of the filter head 110, opposite the first end. For example, the third wall 126 extends towards the filter cartridge 140 and / or the plate 200 in a substantially axial direction. The third wall 126 is positioned radially inward from the second wall 124. The inner chamber 130 is at least partially defined between the second wall 124 and the third wall 126. The central port 118 is at least partially defined by an inner surface of the third wall 126.

[0049] The second radial wall 127 extends from the main body 120 towards the second end of the filter head 110, between the second wall 124 and the third wall 126. For example, the second radial wall 127 extends towards the filter cartridge 140 and / or the plate 200 in a84920-9737-0512Atty. Dkt. No.: 137878-3377substantially axial direction. The second radial wall 127 is positioned in the inner chamber 130, proximate the first aperture 134.

[0050] The inner chamber 130 defines a first flow path for the fluid (e.g., fuel). The outer chamber 132 defines a second flow path for the coolant. The first flow path and the second flow path are described in greater detail herein with respect to FIGS. 8-10.

[0051] The one or more projections 138 extend from the main body 120 towards the second end of the filter head 110. The one or more projections 138 are positioned between the second wall 124 and the third wall 126. Each of the one or more projections 138 defines an aperture 139 that extends at least partially therethrough. The aperture 139 extends in an axial direction from a bottom surface of the one or more projections 138, towards the main body 120. As shown in FIG. 3, the filter head 110 includes two projections 138. In other embodiments, the filter head 110 may include more or fewer projections 138 (e.g., at least one projection 138).

[0052] Referring to FIGS. 1 and 2, the filtration system 100 includes a pump 150. The pump 150 is coupled to the filter head 110. The pump 150 may be configured to pump a fluid, such as fuel, through the filtration system 100. In the embodiment shown in FIGS. 1 and 2, the pump 150 is hand driven. In other embodiments, the pump 150 is electrically driven.[00531 The pump 150 is in fluid communication with the central port 118. The pump 150 is configured to create a pressure differential within the filtration system 100, thereby drawing the fluid in an outside-in flow configuration. For example, the pump 150 may lower the pressure at or near the central port 118, thereby drawing fluid from the first port 114, through the filter cartridge 140, into the central port, and into the second port 115.

[0054] The filtration system 100 includes a valve assembly 152 positioned in the central port 118. The valve assembly 152 includes one or more valve members that selectively allow a fluid (e.g., fuel) to flow therethrough. During operation of the pump 150, the valve assembly 152 is configured to allow the fluid (e.g., fuel) to flow from the central port 118 and into the second port 115.94920-9737-0512Atty. Dkt. No.: 137878-3377[0055} As shown in FIGS. 1 and 2, the filter cartridge 140 includes a shell 142 and a filter element 160. The shell 142 at least partially defines an internal volume 144. As shown in FIG.2, the filter head 110 also at least partially defines the internal volume 144. The filter element 160 is positioned at least partially within the internal volume 144 such that the filter element 160 is within the filter head 110 and the shell 142.[0056} The filtration system 100 includes a collar 148. The collar 148 couples the filter cartridge 140, and more particularly the shell 142, to the filter head 110.[0057} The filter element 160 is configured to filter the fluid (e.g., by removing contaminants). In some embodiments, the filter element 160 is removably coupled to the shell 142. In other embodiments, the filter element 160 is permanently secured within the shell 142 such that the filter element 160 cannot be removed from the shell 142 without causing damage to the filter element 160 and / or the shell 142. The filter element 160 is at least partially contained within the shell 142 and / or the filter head 110.[0058} As shown in FIG. 2, the filter element 160 includes a filter media 162. The filter media 162 may be positioned between and may be coupled to one or more endplates, one of which is shown as a first endplate 170. The filter media 162 is formed in a cylindrical or annular configuration. The filter media 162 may be pleated to increase surface area. The filter media 162 may be a single-layer media or a multi-layer media made from at least one of a woven fiber, a non-woven material, a wet laid material, a polymeric material, a glass material, a cellulose material, and / or other suitable material. The filter media 162 is structured to allow the unfiltered fluid to be filtered by flowing through the filter media 162. For example, the unfiltered fluid flows through the filter media 162, and the filter media 162 removes impurities, such as particulates, organic matter, and the like, from the unfiltered fluid as the unfiltered fluid passes through the filter media 162. The impurities are trapped by the filter media 162.

[0059] As shown in FIG. 2, an outer volume 166 is defined between the filter media 162 and the filter head 110. In some embodiments, the outer volume 166 is also defined between the filter media 162 and the shell 142. An inner volume 168 is defined within the filter media 162.104920-9737-0512Atty. Dkt. No.: 137878-3377In operation, a fluid flows from the outer volume 166, through the filter media 162, and into the inner volume 168.

[0060] The filter element 160 includes the first endplate 170. In the embodiment shown, the first endplate 170 is an upper endplate that is positioned at a first end of the filter media 162, proximate the filter head 110. In some embodiments, the filter element 160 includes a second endplate (not shown) (e.g., a lower endplate), that is positioned at a second end of the filter media 162, opposite the first end of the filter media 162.

[0061] As shown in FIG. 2, the first endplate 170 includes an end wall 172. The end wall 202 extends radially outward relative to the center axis of the filtration system 100.

[0062] The end wall 172 at least partially defines an aperture 173. In some embodiments, the aperture 173 is centered on the center axis of the filtration system 100, such that the aperture 173 is aligned with the central port 118.[00631 The first endplate 170 includes an axial flange 174. The axial flange 174 extends from an inner portion of the end wall 172, proximate the aperture 173 in a direction away from the filter media 162. As shown in FIG. 2, the first endplate 170 includes a sealing channel 176 that is defined by one or more protrusions extending radially outward from the axial flange 174. The sealing channel 176 is configured to receive a sealing member 178 therein. The sealing member 178 is configured to form a seal between the filter head 110 and the first endplate 170.

[0064] As shown in FIG. 2, the plate 200 is positioned within the filter head 110. The plate 200 is at least partially between the filter head 110 and the filter element 160. The plate 200 is positioned axially above the filter media 162. The plate 200 defines a central axis that extends through a center of the plate 200 in an axial direction. The central axis of the plate 200 is substantially coaxial with the central axis of the filtration system 100. The plate 200 is coupled to the filter head 110.

[0065] In some embodiments, the plate 200 is made of a metallic material, such as steel, copper, or aluminum. Beneficially, the plate 200 facilitates heat transfer between the coolant and the fluid (e.g., fuel). For example, heat from the coolant in the outer chamber 132 may 114920-9737-0512Atty. Dkt. No.: 137878-3377transfer to the plate 200, and the plate 200 may transfer heat to the fluid (e.g., fuel) in the inner chamber 130. Further, although some heat transfer between the coolant and the fluid (e.g., via the second wall 124, a majority of the heat transferred between the coolant and the fluid occurs via the plate 200.

[0066] As shown in FIGS. 2, 4, 5, and 6, the plate 200 includes an end wall 202, a skirt 206, and an axial flange 208. The end wall 202 extends radially outward relative to the center axis of the plate 200. The plate 200 at least partially defines the inner chamber 130 and the outer chamber 132. For example, the end wall 202 at least partially defines the inner chamber 130 and the outer chamber 132.[0067| The end wall 202 at least partially defines a central aperture 203. In some embodiments, the central aperture 203 is centered on the center axis of the filtration system 100 and the center axis of the plate 200, such that the central aperture 203 is aligned with the central port 118 and / or the axial flange 174. As shown in FIG. 2, the axial flange 174 extends though the central aperture 203.

[0068] The end wall 202 defines one or more fastener apertures 204. The one or more fastener apertures 204 extend through the end wall 202 in an axial direction relative to the center axis of the plate 200. The one or more fastener apertures 204 are spaced away from the central aperture 203. For example, an axis extending through the center of the one or more fastener apertures 204 is substantially parallel to the center axis of the plate 200. Each of the one or more fastener apertures 204 are positioned to align with a corresponding aperture 139 of the filter head 110. The one or more fastener apertures 204 are sized to receive a fastener 230 therein. Each fastener 230 extends through a corresponding fastener aperture 204 and into a corresponding aperture 139 of the filter head 110. In this way, the fasteners 230 couple the plate 200 to the filter head 110.

[0069] The end wall 202 defines an elongated aperture 205. The elongated aperture 205 extends through the end wall 202 in an axial direction relative to the center axis of the plate 200. The elongated aperture 205 is spaced away from the central aperture 203. For example, an axis extending through the elongated aperture 205 is substantially parallel to the center axis of 124920-9737-0512Atty. Dkt. No.: 137878-3377the plate 200. The elongated aperture 205 enables fluid communication between the inner chamber 130 and the outer volume 166. For example, the fluid (e.g., fuel) flowing through the inner chamber 130 may flow through the elongated aperture 205 and into the outer volume 166 (e.g., upstream of the filter media 162). In the embodiment shown in FIGS. 4, 5, 6, and 7, the elongated aperture 205 has an elongated curved shape. In other embodiments, the elongated aperture 205 has a different shape, such as a circular shape, an oval shape, etc.[0070) The skirt 206 extends axially from the end wall 202 in a first direction, towards the filter cartridge 140 and / or away from the main body 120 of the filter head 110. The plate 200 includes a sealing channel 207 extending radially outward from the skirt 206, towards the first wall 122, at an outer periphery of the plate 200. The sealing channel 207 is configured to receive a first plate sealing member 220 therein. The first plate sealing member 220 is positioned at the outer periphery of the plate 200 and at least partially within the sealing channel 207. The first plate sealing member 220 is configured to form a radially directed seal between the plate 200 and the first wall 122 of the filter head 110. In this way, the first plate sealing member 220 substantially prevents the coolant in the outer chamber 132 from flowing between the plate 200 and the first wall 122 and into the outer volume 166. The first plate sealing member 220 also substantially prevents the fluid (e.g., fuel) in the outer volume from flowing into the outer chamber 132.[00711 The axial flange 208 extends axially from the end wall 202 in a second direction, opposite the first direction, towards the main body 120 of the filter head 110 and / or away from the filter cartridge 140. The axial flange 208 is positioned between the skirt 206 and the central aperture 203. As shown in FIG. 6, the central aperture 203, the one or more fastener apertures 204, and the elongated aperture 205 are each positioned radially inward relative to the axial flange 208.[00721 The plate 200 includes a sealing channel 210 extending radially outward from the axial flange 208, towards the second wall 124. The sealing channel 210 is configured to receive a second plate sealing member 222 therein. The second plate sealing member 222 is positioned at the outer periphery of the axial flange 208 and at least partially within the sealing channel 210.134920-9737-0512Atty. Dkt. No.: 137878-3377The second plate sealing member 222 is configured to form a radially directed seal between the plate 200 and the second wall 124 of the filter head 110. In this way, the second plate sealing member 222 substantially prevents the coolant in the outer chamber 132 from flowing between the plate 200 and the second wall 124 and into the inner chamber 130. The second plate sealing member 222 substantially prevents the fluid (e.g., fuel) in the inner chamber 130 from flowing between the second wall 124 and the plate 200 and into the outer chamber 132.[0073) The plate 200 at least partially defines the inner chamber 130. For example, the inner chamber 130 is defined between the second wall 124, the third wall 126, and the end wall 202. The end wall 202 contacts an end surface of the second wall 124 and an end surface of the third wall 126 to define the inner chamber 130. The axial flange 208 extends into the inner chamber 130, such that the second sealing member 222 is positioned to substantially prevent the fluid (e.g., fuel) in the inner chamber 130 from flowing between the second wall 124 and the plate and into the outer chamber 132 and / or to substantially prevent the coolant in the outer chamber 132 from flowing between the plate 200 and the second wall 124 and into the inner chamber 130. In this arrangement, at least a portion of the plate 200, such as a portion of the end wall 202 and / or the axial flange 208 is in contact with the fluid (e.g., fuel) in the inner chamber 130. The contact between the fluid in the inner chamber 130 and the plate 200 enables heat transfer between the fluid in the inner chamber 130 and the plate 200.

[0074] The plate 200 at least partially defines the outer chamber 132. For example, the outer chamber 132 is defined between the first wall 122, the second wall 124, and the end wall 202. The end wall 202 contacts an end surface of the first wall 122 and an end surface of the second wall 124 to define the inner chamber 130. The first plate sealing member 220 is positioned to substantially prevent the coolant in the outer chamber 132 from flowing between the plate 200 and the first wall 122 and into the outer volume 166 and / or to substantially prevent the fluid (e.g., fuel) in the outer volume from flowing into the outer chamber 132. In this arrangement, at least a portion of the plate 200, such as a portion of the end wall 202 is in contact with the coolant in the outer chamber 132. The contact between the coolant in the outer chamber 132 and the plate 200 enables heat transfer between the coolant in the outer chamber 132 and the plate 200.144920-9737-0512Atty. Dkt. No.: 137878-3377[0075} The plate 200 contacts both the coolant in the outer chamber 132 and the fluid in the inner chamber 130. In this way, the plate 200 facilitates heat transfer between the coolant and the fluid.

[0076] Referring generally to FIGS. 8-10, various cross-sectional views of the filtration system 100 are shown. FIG. 8 is a front-cross sectional view showing a portion of the filtration system 100. FIG. 9 is a bottom cross-sectional view along the plane A-A shown in FIG. 8. FIG. 10 is a top cross-sectional view along the plane B-B shown in FIG. 8. FIGS. 8-10 depict flow paths for the fluid (e.g., fuel) and the coolant within the filter head 110.

[0077] As shown in FIGS. 8-10, the fluid (e.g., fuel) flows along a first flow path 300. The fluid enters the filtration system 100 at the first port 114. The fluid flows from the first port 114 to the inner chamber 130 via the first aperture 134. The fluid flows in a first circumferential direction around the central axis of the filtration system 100 from the first aperture 134 to the elongated aperture 205. For example, the second radial wall 127 substantially prevents the fluid from flowing in a second circumferential direction, opposite the first circumferential direction. That is, the inner chamber 130 is configured to receive the fluid in the first circumferential direction. The fluid flows from the inner chamber 130 into the outer volume 166 via the elongated aperture 205. The fluid flows through the filter media 162 and into the inner volume 168. The fluid flows from the inner volume 168, through the aperture 173 and into the central port 118. The fluid flows from the central port 118 and into the second port 115. The fluid flows out of the filtration system 100 via the second port 115.|0078| As shown in FIGS. 8-10, the coolant flows along a second flow path 310. The coolant enters the filtration system 100 via the third port 116. The coolant flows from the third port 116 to the outer chamber 132 via the second aperture 135. The coolant flows in the second circumferential direction around the central axis of the filtration system from the second aperture 135 to the third aperture 136. For example, the first radial wall 125 substantially prevents the coolant from flowing in the first circumferential direction. That is, the outer chamber 132 is configured to receive the coolant in the second circumferential direction. The154920-9737-0512Atty. Dkt. No.: 137878-3377coolant flows from the outer chamber 132 into the fourth port 117 via the third aperture 136. The fluid flows out of the filtration system 100 via the fourth port 117.

[0079] The first flow path 300 and the second flow path 310 define a counterflow arrangement for the coolant and the fluid flow (e.g., because the fluid flows in the first circumferential direction and the coolant flows in the second circumferential direction, opposite the first circumferential direction). One or more components, such as the plate 200, and, in some cases, the filter head 110, facilitate heat transfer between the coolant and the fluid. In combination, the filter head 110 and the plate 200 define a counter flow heat exchanger that facilitates transferring heat between the fluid and the coolant. Beneficially, the counter flow heat exchanger is contained within the filtration system 100. Furthermore, the counter flow arrangement may improve heat transfer between the coolant and the fluid.|0080] Referring now to FIG. 11, a bottom view of the filter head 110 is shown, according to another example embodiment. The filter head 110 shown in FIG. 11 is substantially similar to the filter head 110 of FIG. 3. Differences from the filter head 110 of FIG. 3 are described below.

[0081] The filter head 110 shown in FIG. 11 includes one or more baffles 128 (e g., radial baffles). The one or more baffles 128 extend radially outward from the second wall 124 towards the first wall 122. The one or more baffles 128 are spaced from the first wall 122 such that a fluid, such as the coolant, can flow therebetween. In some embodiments, the one or more baffles 128 contact the end wall 202 of the plate 200. In other embodiments, the one or more baffles 128 are spaced from the end wall 202 of the plate 200.[0082| During operation, the one or more baffles 128 are positioned such that the coolant in the outer chamber 132 flows around the one or more baffles 128 (e.g., between the one or more baffles 128 and the first wall 122). Beneficially, the baffles 128 provide additional surface area for transferring heat between the coolant and the fluid in the inner chamber 130. Additionally, the one or more baffles 128 may increase a turbulence of the coolant flowing through the outer chamber 132. In this way, the one or more baffles 128 can increase the amount and / or rate of heat transfer between the coolant and the fluid in the inner chamber 130.164920-9737-0512Atty. Dkt. No.: 137878-3377

[0083] Referring now to FIG. 12, a bottom view of the filter head 110 is shown, according to yet another example embodiment. The filter head 110 shown in FIG. 12 is substantially similar to the filter head 110 of FIG. 3. Differences from the filter head 110 of FIG. 3 are described below.

[0084] The filter head 110 shown in FIG. 12 includes one or more baffles 129 (e.g., hooks, baffle hooks, etc.). The one or more baffles 129 extend from the first wall 122 into the outer chamber 132 along a curve to form a hook shape. More specifically, the one or more baffles 129 extend from the first wall 122 radially inward and along the flow direction of the coolant flowing through the outer chamber 132, such that a proximal end of each baffle 129 (at / proximate the first wall 122) is upstream of a distal end of the respective baffle 129. The one or more baffles 129 are spaced from the second wall 124 such that a fluid, such as the coolant, can flow therebetween. In some embodiments, the one or more baffles 129 contact the end wall 202 of the plate 200. In other embodiments, the one or more baffles 129 are spaced from the end wall 202 of the plate 200.

[0085] During operation, the one or more baffles 129 are positioned such that the coolant in the outer chamber 132 flows around the one or more baffles 129 (e.g., between the one or more baffles 129 and the second wall 124). Beneficially, the one or more baffles 129 provide additional surface area for transferring heat between the coolant and the fluid in the inner chamber 130. Additionally, the one or more baffles 129 may increase a turbulence of the coolant flowing through the outer chamber 132. In this way, the one or more baffles 129 can increase the amount and / or rate of heat transfer between the coolant and the fluid in the inner chamber 130.[0086| Referring now to FIG. 13, a bottom perspective view of the plate 200 is shown, according to another example embodiment. The plate 200 shown in FIG. 13 is substantially similar to the plate 200 of FIGS. 5-7. Differences from the plate 200 of FIGS. 5-7 are described below.

[0087] The plate 200 shown in FIG. 13 includes one or more projections 212 (e.g., fins, etc.) extending axially from the end wall 202 in the first direction (e.g., in the same direction as the 174920-9737-0512Atty. Dkt. No.: 137878-3377skirt 206, towards the filter cartridge 140 and / or away from the main body 120 of the filter head 110). The one or more projections 212 are spaced radially from the center axis. The one or more projections 212 extend in a circumferential direction with respect to the center axis. As shown in FIG. 13, the one or more projections 212 may be spaced from each other in the circumferential direction and / or in the radial direction.

[0088] During operation, the one or more projections 212 are positioned such that at least a portion of the fluid in the outer volume 166 flows around the one or more projections 212 (e.g., between the plate 200 and the first endplate 170). Beneficially, the one or more projections 212 provide additional surface area for transferring heat between the coolant in the outer chamber 132 and the fluid in the outer volume 166. In this way, the one or more projections 212 can increase the amount and / or rate of heat transfer between the coolant in the outer chamber 132 and the fluid in the outer volume 166.

[0089] Now referring to FIGS. 14 and 15, a portion of a filtration system 400 is shown, according to an example embodiment. It should be understood that the filtration system 400 may include more or fewer components than as shown in FIGS. 14 and 15. The filtration system 400 is configured to receive an unfiltered fluid (e.g., fuel, oil, etc.), filter the fluid, and provide the filtered fluid to a downstream device, such as an engine. As shown, the filtration system 400 includes a filter head 410 and a filter cartridge 440. The filter cartridge 440 is configured to be coupled to the filter head 410. The filtration system 400 also includes a heat exchanger member (e.g., a heater plate, a heat exchanger plate, etc.), shown as a plate 500. The plate 500 is coupled to the filter head 410. In some embodiments, the filter head 410 and the plate 500 define a filter head assembly.

[0090] The filter head 410 includes a filter head body 411. The filter head body 411 defines one or more ports, shown as a first return line port 412, a second return line port 413, a first port 414, a second port 415, a third port 416, and a fourth port 417. The filter head body 411 also defines a central port 418. The filter head body 411 includes a main body 420 (e.g., a filter head main body), a first wall 422 (e.g., an outer wall), a second wall 424 (e g., an inner wall), and a radial wall 426 (e.g., a first radial wall). The filter head body 411 at least partially defines 184920-9737-0512Atty. Dkt. No.: 137878-3377a first chamber 550 (e.g., an upper chamber), a second chamber 552 (e.g., a central chamber), and a third chamber 554 (e.g., a lower chamber). The filter head body 411 also includes one or more projections 438, as shown in FIG. 16.

[0091] In some embodiments, the filter head 410 is made from a plastic material. In other embodiments, the filter head 410 is made from a metallic material, such as steel or aluminum.

[0092] The first return line port 412 is an inlet port in fluid receiving communication with an upstream device, such as a fuel tank, and in fluid providing communication with an interior of the filtration system 400. The first return line port 412 is in fluid providing communication with the first chamber 550. For example, the first return line port 412 may be configured to provide an unfiltered fluid, such as fuel, oil, etc., to the first chamber 550.

[0093] The second return line port 413 is an outlet port in fluid receiving communication with the first return line port 412 and in fluid providing communication with a downstream device, such as the fuel tank. For example, the first return line port 412 may be configured to route the fluid from the first return line port 412 to the fuel tank, bypassing the filter cartridge 440. In other embodiments, the first return line port 412 is configured as the outlet port and the second return line port 413 is configured as the inlet port.

[0094] The first port 414 is an inlet port in fluid receiving communication with an upstream device and in fluid providing communication with an interior of the filtration system 400. The first port 414 is in fluid providing communication with the first chamber 550. For example, the first port 414 may be configured to provide an unfiltered fluid, such as fuel, oil, etc., to the first chamber 550.

[0095] The second port 415 is an outlet port in fluid receiving communication with the interior of the filtration system 400 and in fluid providing communication with a downstream device, such as an engine. The second port 415 is in fluid receiving communication with the filter cartridge 440 and / or the central port 418. For example, the second port 415 may be configured to provide a filtered fluid to a downstream device, from the central port 418. In other194920-9737-0512Atty. Dkt. No.: 137878-3377embodiments, the first port 414 is configured as the outlet port and the second port 415 is configured as the inlet port.

[0096] The third port 416 is an inlet port in fluid receiving communication with an upstream device and in fluid providing communication with an interior of the filtration system 400. The third port 416 is in fluid providing communication with the second chamber 552. For example, the third port 416 may be configured to provide a working fluid (e.g., the coolant) to the second chamber 552.

[0097] The fourth port 417 is an outlet port in fluid receiving communication with the interior of the filtration system 400 and in fluid providing communication with a downstream device, such as a fluid reservoir. The fourth port 417 is in fluid receiving communication with the second chamber 552. For example, the fourth port 417 may be configured to provide the coolant to a downstream device, from the second chamber 552. In other embodiments, the third port 416 is configured as the outlet port and the fourth port 417 is configured as the inlet port.

[0098] The central port 418 extends through the filter head body 411. The central port 418 is centered on a center axis of the filtration system 400. The center axis extends through a radial center of the filtration system 400, a center of the filter head 410, and / or a center of the filter cartridge 440. The central port 418 is in fluid receiving communication with the interior of the filtration system and in fluid providing communication with the second port 415.

[0099] In some embodiments, a portion 419 of the second wall 424 at least partially defines the central port 418. The portion 419 of the second wall 424 defines a non-planar shape (e.g., an undulating shape, a curved shape, etc.), as shown in FIGS. 14 and 15.

[0100] The main body 420 is positioned at a first end of the filter head 410, away from the filter cartridge 440. The first return line port 412, the second return line port 413, the first port 414, the second port 415, the third port 416, and the fourth port 417 extend through the main body 420 of the filter head 410. That is, the main body 120 at least partially defines the first return line port 412, the second return line port 413, the first port 414, the second port 415, the third port 416, and the fourth port 417.204920-9737-0512Atty. Dkt. No.: 137878-3377[0101 } The first wall 422 extends away from the main body 420 towards a second end of the filter head 110, opposite the first end. For example, the first wall 422 extends towards the filter cartridge 440 and / or the plate 500 in a substantially axial direction. The first wall 422 is positioned at an outer periphery of the filter head 410.[01021 The second wall 424 extends away from the main body 420 towards the second end of the filter head 110, opposite the first end. For example, the second wall 424 extends towards the filter cartridge 140 and / or the plate 200 in a substantially axial direction. The second wall 424 is positioned radially inward from the first wall 422. The first chamber 550, the second chamber 552, and the third chamber 554 are positioned between the first wall 422 and the second wall 424. The central port 418 is at least partially defined by an inner surface of the second wall 424.[0103 J The radial wall 426 extends from the main body 420 towards the second end of the filter head 410, between the first wall 422 and the second wall 424. For example, the radial wall 426 extends towards the filter cartridge 440 and / or the plate 500 in a substantially axial direction. The radial wall 426 extends from the first wall 422 to the second wall 424.[0104| The first chamber 550 and the third chamber 554 define a first flow path for the fluid (e.g., fuel). The second chamber 552 defines a second flow path for the coolant. The first flow path and the second flow path are described in greater detail herein with respect to FIGS. 16 and 17.

[0105] As shown in FIG. 16, the one or more projections 438 extend from the main body 420 towards the second end of the filter head 410. The one or more projections 438 are positioned between the first wall 422 and the second wall 424. Each of the one or more projections 438 defines an aperture 439 that extends at least partially therethrough. The aperture 439 extends in an axial direction from a bottom surface of the one or more projections 438, towards the main body 120. As shown in FIG. 16, the filter head 410 includes two projections 438. In other embodiments, the filter head 410 may include more or fewer projections 438 (e.g., at least one projection 438).214920-9737-0512Atty. Dkt. No.: 137878-3377[0106} As shown in FIG. 15, the filtration system 400 includes a valve assembly 450. The valve assembly is positioned in the first port 414. The valve assembly 450 includes a valve member 452 that is operable between a first position and a second position. In the first position, the valve member 452 allows a fluid (e.g., fuel) to flow through the first port 414 and into the first chamber 550. In the first position, the valve member 452 may substantially prevent the fluid from flowing from the first return line port 412 to the first chamber 550. Instead, the valve member 452 directs the fluid to flow out of the filtration system 400 via the second return line port 413. In the second position, the valve member 452 allows the fluid to flow from the first return line port 412 to the first chamber 550. In the second position, the valve member 452 may substantially prevent the fluid from flowing from the first port 414 to the valve assembly 450.[0107) The filter cartridge 440 of the filtration system 400 shown in FIGS. 14 and 15 is substantially similar to the filter cartridge 140 of FIG. 1. For example, the filter cartridge 440 includes a shell (not shown) that defines an internal volume similar to the shell 142; a collar (not shown) that is similar to the collar 148, a filter element 460 similar to the filter element 160; a filter media 462 similar to the filter media 162; a first endplate 470 having an end wall 472, an aperture 473, an axial flange 474, a sealing channel 476, and a sealing member 478, similar to the first endplate 170, the end wall 172, the aperture 173, the axial flange 174, and the sealing channel 176, respectively. As shown in FIGS. 14 and 15, an outer volume 466 is defined between the filter media 462 and the filter head 410. In some embodiments, the outer volume 466 is also defined between the filter media 462 and the shell. An inner volume 468 is defined within the filter media 462. In operation, a fluid flows from the outer volume 466, through the filter media 462, and into the inner volume 468. The differences between the filter cartridge 140 and the filter cartridge 440 are described below.|0.1.08| The axial flange 474 of the first endplate 470 has an end surface 479 that is complementary in shape to the portion 419. In this way, the end surface 479 and the portion 419 define a “poka-yoke” arrangement such that, when the filter cartridge 440 is coupled to the filter head 410, the end surface 479 engages the portion 419 to align the filter cartridge 440 relative to the filter head 410 in a desired orientation.224920-9737-0512Atty. Dkt. No.: 137878-3377[0109} As shown in FIGS. 14 and 15, the plate 500 is positioned within the filter head 410. The plate 500 is at least partially between the filter head 410 and the filter element 460. The plate 500 is positioned axially above the filter media 462. The plate 500 defines a central axis that extends through a center of the plate 500 in an axial direction. The central axis of the plate 500 is substantially coaxial with the central axis of the filtration system 400. The plate 500 is coupled to the filter head 410.[0110} In some embodiments, the plate 500 is made of a metallic material, such as steel, copper, or aluminum. Beneficially, the plate 500 facilitates heat transfer between the coolant and the fluid (e.g., fuel). For example, heat from the coolant in the second chamber 552 may transfer to the plate 500, and the plate 500 may transfer heat to the fluid (e.g., fuel) in the first chamber 550 and / or in the third chamber 554.[0111} As shown in FIGS. 14-21, the plate 500 includes an axial wall 502, a first end wall 504, and a second end wall 507. The axial wall 502 defines a center axis of the plate 500. The axial wall 502 extends in an axial direction relative to the center axis of the plate 500. The axial wall 502 extends around the center axis. The axial wall 502 is spaced from the center axis of the plate 500 such that the axial wall 502 defines an opening 503.[0112} The opening 503 is sized to receive the second wall 424 therein. By way of example, a radially inner surface of the axial wall 502 is positioned radially outward of the second wall 424. In some embodiments, the radially inner surface of the axial wall 502 contacts a radially outer surface of the second wall 424. In some embodiments, the opening 503 is centered on the center axis of the filtration system 400 and the center axis of the plate 500, such that the opening 503 is aligned with the second port 415 and / or the aperture 473.[0113} The first end wall 504 extends radially outward from a first axial end of the axial wall 502 (e.g., away from the opening 503, towards the first wall 422). The first chamber 550 is defined between the first end wall 504 and the filter head 410.[0114} The plate 500 includes one or more first fins 505 (e.g., baffles, etc.) extending from the first end wall 504 in an axial direction (e.g., away from the second end wall 507, towards the 234920-9737-0512Atty. Dkt. No.: 137878-3377filter head body 411 of the filter head 410). The one or more first fins 505 are spaced radially from the center axis. The one or more first fins 505 extend in a circumferential direction with respect to the center axis. As shown in FIG. 18, the one or more first fins 505 are spaced from each other in the circumferential direction and in the radial direction.

[0115] Beneficially, the one or more first fins 505 provide additional surface area for transferring heat between the coolant in the second chamber 552 and the fluid in the first chamber 550. By way of example, during operation, the one or more first fins 505 may facilitate transferring heat from the coolant to the fluid flowing in the first chamber 550.

[0116] The plate 500 includes a first skirt 506 extending from the first end wall 504 in an axial direction (e.g., away from the second end wall 507, towards the filter head body 411 of the filter head 410). The first skirt 506 extends around an outer periphery of the first end wall 504.

[0117] The first skirt 506 defines a first sealing channel 510. The first sealing channel 510 is configured to receive a first plate sealing member 540 therein. The first plate sealing member 540 is positioned at the outer periphery of the first end wall 504 and at least partially within the first sealing channel 510. The first plate sealing member 540 is configured to form a radially directed seal between the plate 500 and the first wall 422 of the filter head 410. In this way, the first plate sealing member 540 substantially prevents the coolant in the second chamber 552 from flowing between the plate 500 and the first wall 422 and into the first chamber 550. The first plate sealing member 540 substantially prevents the fluid (e g., fuel) in the first chamber 550 from flowing between the first wall 422 and the plate 500 and into the second chamber 552.

[0118] The second end wall 507 extends radially outward from a second axial end of the axial wall 502, opposite the first axial end, (e.g., away from the opening 503, towards the first wall 422), such that the second end wall 507 is spaced form the first end wall (e.g., by the axial wall). The second chamber 552 is defined between the first end wall 504, the second end wall 507, the axial wall 502, and the first wall 422. The third chamber 554 is defined between the second end wall 507 and the first endplate 470. The third chamber 554 is in fluid244920-9737-0512Atty. Dkt. No.: 137878-3377communication with the outer volume 466 via a gap between the plate 500 and the first endplate 470.

[0119] The plate 500 includes one or more second fins 508 (e.g., baffles, etc.) extending from the second end wall 507 in an axial direction (e.g., away from the first end wall 504, away from the filter head body 411 of the filter head 410, towards filter cartridge 440, towards the filter element 460, etc.). The one or more second fins 508 are spaced radially from the center axis. The one or more second fins 508 extend in a circumferential direction with respect to the center axis. As shown in FIG. 19, the one or more second fins 508 are spaced from each other in the circumferential direction and in the radial direction.|0129] Beneficially, the one or more second fins 508 provide additional surface area for transferring heat between the coolant in the second chamber 552 and the fluid in the third chamber 554. By way of example, during operation, the one or more second fins 508 may facilitate transferring heat from the coolant to the fluid flowing in the third chamber 554.(0121] The plate 500 includes a second skirt 509 extending from the second end wall 507 in an axial direction (e.g., away from the first end wall 504, away from the filter head body 411 of the filter head 410, towards filter cartridge 440, towards the filter element 460, etc.). The second skirt 509 extends around an outer periphery of the second end wall 507.

[0122] The second skirt 509 defines a second sealing channel 512 extending radially outward from the second end wall 507. The second sealing channel 512 is configured to receive a second plate sealing member 542 therein. The second plate sealing member 542 is positioned at the outer periphery of the second end wall 507 and at least partially within the second sealing channel 512. The second plate sealing member 542 is configured to form a radially directed seal between the plate 500 and the first wall 422 of the filter head 410. In this way, the second plate sealing member 542 substantially prevents the coolant in the second chamber 552 from flowing between the plate 500 and the first wall 422 and into the third chamber 554. The second plate sealing member 542 substantially prevents the fluid (e.g., fuel) in the third chamber 554 from flowing between the first wall 422 and the plate 500 and into the second chamber 552.254920-9737-0512Atty. Dkt. No.: 137878-3377

[0123] The plate 500 contacts the coolant in the second chamber 552 and the fluid in the first chamber 550 and the third chamber 554. In this way, the plate 200 facilitates heat transfer between the coolant and the fluid.

[0124] Referring to FIGS. 17-19, the plate 500 includes a first projection 520. The first projection 520 extends from the first end wall 504 to the second end wall 507 in an axial direction. The first projection 520 is positioned radially outward from the axial wall 502 and radially inward from the first skirt 506 and the second skirt 509. The first projection 520 defines an elongated aperture 522. The elongated aperture 522 defines a space such that openings exist within the first end wall 504, the second end wall 507, and the first projection 520. In this way, the elongated aperture 522 enables fluid communication between the first chamber 550 and the third chamber 554. For example, the fluid in the first chamber 550 can flow into the third chamber 554 by flowing through the elongated aperture 522.

[0125] As shown in FIGS. 17-18, the plate 500 includes one or more second projections 530. The second projections 530 extend from the first end wall 504 to the second end wall 507 in an axial direction. Each of the second projections 530 defines an aperture 532 that extends in an axial direction relative to the center axis and through the first end wall 504, the second end wall 507, and the corresponding second projection 530. As shown in FIG. 18, the plate 500 includes two projections 530 (one visible and one offset approximately 180 degrees from the visible projection). In other embodiments, the plate 500 may include more or fewer projections 530 (e.g., at least one projection 530).

[0126] In some embodiments, as shown in FIGS. 20 and 21, the plate 500 includes baffle walls 534. The baffle walls 534 extend from the axial wall 502 toward the first wall 422. At least one of the baffle walls 534 extends from the first end wall 504 towards the second end wall 507 and is spaced from the second end wall 507. At least one of the baffle walls 534 extends from the second end wall 507 towards the first end wall 504 and is spaced from the first end wall 504.[0.1.27] During operation, the baffle walls 534 are positioned such that at least a portion of the coolant in the second chamber 552 flows around the baffle walls 534. Beneficially, the baffle walls 534 provide additional surface area for transferring heat between the coolant in the 264920-9737-0512Atty. Dkt. No.: 137878-3377second chamber 552 and the fluid in the first chamber 550 and / or the fluid in the third chamber 554. Additionally, the baffle walls 534 may increase a turbulence of the coolant flowing through the second chamber 552. In this way, the baffle walls 534 can increase the amount and / or rate of heat transfer between the coolant in the second chamber 552 and the fluid in the first chamber 550 and / or the fluid in the third chamber 554.

[0128] Referring to FIGS. 16 and 17, various cross-sectional views of the filtration system 400 are shown. FIG. 16 is a top cross-sectional view of the filtration system 400 showing the first chamber 550. FIG. 17 is another top cross-sectional view of the filtration system 400 showing the second chamber 552.

[0129] As shown in FIG. 16, the fluid (e.g., fuel) flows along a first flow path 600. The fluid enters the filtration system 400 (e.g., via the first port 414 and / or the first return line port 412). The fluid flows from the first port 414 and into the first chamber 550 (e g., by flowing through the valve assembly 450). The fluid flows in a first circumferential direction around the central axis of the filtration system 400 to the elongated aperture 522. For example, the radial wall 426 substantially prevents the fluid from flowing in a second circumferential direction, opposite the first circumferential direction. That is, the first chamber 550 is configured to receive the fluid in the first circumferential direction. The fluid flows from the first chamber 550 into the third chamber 554 via the elongated aperture 522. The fluid flows from the third chamber 554 and into the outer volume 466. The fluid flows through the filter media 462 and into the inner volume 468. The fluid flows from the inner volume 468, through the aperture 473 and into the central port 418. The fluid flows from the central port 418 and into the second port 415. The fluid flows out of the filtration system 400 via the second port 415.

[0130] As shown in FIG. 17, the coolant flows along a second flow path 610. The coolant enters the filtration system 400 via the third port 416. The coolant flows from the third port 416 to the second chamber 552. The coolant flows around the axial wall 502 (e.g., in the first circumferential direction and / or in the second circumferential direction). For example, a first portion of the coolant may flow around the axial wall 502 in the first circumferential direction and a second portion of the coolant may flow around the axial wall 502 in the second274920-9737-0512Atty. Dkt. No.: 137878-3377circumferential direction. The coolant flows from the second chamber 552 into the fourth port 417. The fluid flows out of the fdtration system 400 via the fourth port 417.

[0131] In other embodiments, the plate 500 may include a radial wall (not shown) that extends from the axial wall 502 to the first wall 422. The radial wall may direct the coolant in the second chamber 552 to flow in the second circumferential direction from the third port 416 to the fourth port 417. Additionally, in these embodiments, the fourth port 417 may be positioned at a different position to allow the coolant to flow around the circumference of the axial wall 502 (or a portion thereof). In these embodiments, the first flow path 600 and the second flow path 610 define a counterflow arrangement for the coolant and the fluid flow (e.g., because the fluid flows in the first circumferential direction and the coolant flows in the second circumferential direction, opposite the first circumferential direction). The plate 500 facilitates heat transfer between the coolant and the fluid. In combination, the filter head 410 and the plate 500 define a counter flow heat exchanger that facilitates transferring heat between the fluid and the coolant. Beneficially, the counter flow heat exchanger is contained within the filtration system 400. Furthermore, the counter flow arrangement may improve heat transfer between the coolant and the fluid.

[0012] It should be noted that the term “example” as used herein to describe various embodiments is intended to indicate that such embodiments are possible examples, representations, and / or illustrations of possible embodiments (and such term is not intended to connote that such embodiments are necessarily extraordinary or superlative examples).[01331 As utilized herein, the term “substantially” and similar terms are intended to have a broad meaning in harmony with the common and accepted usage by those of ordinary skill in the art to which the subject matter of this disclosure pertains. The term “substantially” as used herein refers to ±10% of the referenced measurement, position, or dimension. It should be understood by those of skill in the art who review this disclosure that these terms are intended to allow a description of certain features described and claimed without restricting the scope of these features to the precise numerical ranges provided. Accordingly, these terms should be interpreted as indicating that insubstantial or inconsequential modifications or alterations of the 284920-9737-0512Atty. Dkt. No.: 137878-3377subject matter described and claimed are considered to be within the scope of the invention as recited in the appended claims.

[0134] The terms “coupled,” “attached,” and the like as used herein mean the joining of two members directly to one another. Such joining may be stationary (e.g., permanent) or moveable (e.g., removable or releasable).[OI35| References herein to the positions of elements (e.g., “top,” “bottom,” etc.) are merely used to describe the orientation of various elements in the figures. It should be noted that the orientation of various elements may differ according to other example embodiments, and that such variations are intended to be encompassed by the present disclosure.[0136) It is important to note that the construction and arrangement of the various example embodiments are illustrative only. Although only a few embodiments have been described in detail in this disclosure, those skilled in the art who review this disclosure will readily appreciate that many modifications are possible (e.g., variations in sizes, dimensions, structures, shapes and proportions of the various elements, various parameters, mounting arrangements, use of materials, colors, orientations, etc.) without materially departing from the novel teachings and advantages of the subject matter described herein. For example, elements shown as integrally formed may be constructed of multiple parts or elements, the position of elements may be reversed or otherwise varied in particular implementations, and the nature or number of discrete elements or positions may be altered or varied. The order or sequence of any process or method steps may be varied or re-sequenced according to alternative embodiments. Other substitutions, modifications, changes, and omissions may also be made in the design, operating conditions, and arrangement of the various example embodiments without departing from the scope of the concepts presented herein.

[0137] While this specification contains many specific implementation details, these should not be construed as limitations on the scope of any inventions or of what may be claimed, but rather as descriptions of features specific to particular implementations of particular inventions. Certain features described in this specification in the context of separate implementations can also be implemented in combination in a single implementation. Conversely, various features 294920-9737-0512Atty. Dkt. No.: 137878-3377described in the context of a single implementation can also be implemented in multiple implementations separately or in any suitable subcombination. Moreover, although features may be described above as acting in certain combinations and even initially claimed as such, one or more features from a claimed combination can in some cases be excised from the combination, and the claimed combination may be directed to a subcombination or variation of a subcombination.304920-9737-0512

Claims

Atty. Dkt. No.: 137878-3377WHAT IS CLAIMED IS:

1. A filtration system comprising:a filter cartridge;a filter head coupled to the filter cartridge, the filter head comprising:a filter head main body;a first wall extending from the filter head main body towards the filter cartridge; anda second wall extend from the filter head main body towards the filter cartridge and radially inward from the first wall; anda plate coupled to the filter head, the plate comprising:an axial wall defining a center axis, the axial wall spaced from the center axis and defining an opening;a first end wall extending radially outward from a first end of the axial wall, wherein a first chamber is defined between the first end wall and the filter head main body; and a second end wall extending radially outward from a second end of the axial wall, opposite the first end of the axial wall, wherein a second chamber is defined between the first end wall, the second end wall, the axial wall, and the first wall.

2. The filtration system of claim 1, wherein the filter head main body defines one or more ports comprising:a first port in unfiltered fluid providing communication with the first chamber; a second port in filtered fluid receiving communication with the filter cartridge; a third port in working fluid providing communication with the second chamber; anda fourth port in working fluid receiving communication with the second chamber.

3. The filtration system of claim 1, wherein the filter head comprises:314920-9737-0512Atty. Dkt. No.: 137878-3377a radial wall extending from the filter head main body towards the filter cartridge between the first wall and the second wall, the radial wall directing unfiltered fluid received in the first chamber to flow in a first circumferential direction.

4. The filtration system of claim 1, wherein the plate comprises:one or more first fins extending from the first end wall and away from the second end wall, the one or more first fins extending in a circumferential direction relative to the center axis; anda first projection extending from the first end wall to the second end wall, the first projection defining an elongated opening that extends through the first end wall, the second end wall, and the first projection.

5. The filtration system of claim 4, wherein:the filter cartridge comprises a filter element having an endplate, a third chamber defined between the second end wall and the endplate; andthe plate comprises one or more second fins extending from the second end wall and away from the first end wall, the one or more second fins extending in the circumferential direction relative to the center axis.

6. The filtration system of claim 1, wherein the plate comprises baffle walls extending from the axial wall towards the first wall.

7. A filtration system comprising:a filter cartridge;a filter head coupled to the filter cartridge, the filter head comprising:a filter head main body;a first wall extending from the filter head main body towards the filter cartridge; anda second wall extend from the filter head main body towards the filter cartridge and radially inward from the first wall, wherein an outer chamber is at least partially defined 324920-9737-0512Atty. Dkt. No.: 137878-3377between the first wall and the second wall, and an inner chamber is at least partially defined radially inward of the second wall; anda plate coupled to the filter head, the plate comprising:an end wall defining an elongated aperture that enables fluid communication between the inner chamber and the filter cartridge;a first sealing member configured to form a first seal between the plate and the first wall; anda second sealing member configured to form a second seal between the plate and the second wall.

8. The filtration system of claim 7, wherein the filter head main body defines one or more ports comprising:a first port in fluid providing communication with the inner chamber;a second port in fluid receiving communication with the filter cartridge;a third port in coolant providing communication with the outer chamber; and a fourth port in coolant receiving communication with the outer chamber.

9. The filtration system of claim 7, wherein the filter head comprises:a first radial wall extending from the filter head main body towards the filter cartridge between the first wall and the second wall, the first radial wall directing a coolant received in the outer chamber to flow in a first circumferential direction; anda second radial wall extending from the filter head main body towards the filter cartridge radially inward from the second wall, the second radial wall directing a fluid received in the inner chamber to flow in a second circumferential direction, opposite the first circumferential direction.

10. The filtration system of claim 7, wherein the plate comprises:a skirt extending axially from the end wall, towards the filter cartridge; anda sealing channel extending radially outward from the skirt towards the first wall, the sealing channel configured to receive the first sealing member therein.334920-9737-0512Atty. Dkt. No.: 137878-337711. The filtration system of claim 7, wherein the plate comprises:an axial flange extending axially from the end wall towards the filter head main body; anda sealing channel extending radially outward from the axial flange towards the second wall, the sealing channel configured to receive the second sealing member therein.

12. The filtration system of claim 11, wherein the elongated aperture is positioned radially inward from the axial flange.

13. The filtration system of claim 7, wherein the plate is made of a metallic material such that the plate enables heat transfer between a coolant in the outer chamber and a fluid in the inner chamber.

14. The filtration system of claim 7, wherein:the plate contacts an end surface of the first wall and the second wall, such that the plate at least partially defines the inner chamber and the outer chamber; andthe plate contacts a coolant in the outer chamber and a fluid in the inner chamber, such that the plate facilitates heat transfer between the coolant and the fluid.

15. The filtration system of claim 7, wherein the plate includes one or more projections extending axially from the end wall towards the filter cartridge, the one or more projections spaced from each other in a circumferential direction.

16. The filtration system of claim 7, wherein the filter head includes one or more baffles extending radially outward from the second wall towards the first wall, the one or more baffles spaced from the first wall.344920-9737-0512Atty. Dkt. No.: 137878-337717. The filtration system of claim 7, wherein the filter head includes one or more baffles extending from the first wall into the outer chamber along a curve, the one or more baffles spaced from the second wall.

18. A plate for a filtration system, the plate comprising:an axial wall defining a center axis, the axial wall spaced from the center axis and defining an opening;a first end wall extending radially outward from a first end of the axial wall;a second end wall extending radially outward from a second end of the axial wall, opposite the first end of the axial wall;one or more first fins extending from the first end wall and away from the second end wall, the one or more first fins extending in a circumferential direction relative to the center axis; anda first projection extending from the first end wall to the second end wall, the first projection defining an elongated opening that extends through the first end wall, the second end wall, and the first projection.

19. The plate of claim 18, further comprising a skirt extending from the first end wall away from the second end wall and around a periphery of the first end wall, the elongated opening positioned between the axial wall and the skirt.

20. The plate of claim 18, further comprising one or more second fins extending from the second end wall and away from the first end wall, the one or more second fins extending in a circumferential direction relative to the center axis.354920-9737-0512

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