Pulsation capture assembly and engine system

Abstract

The invention relates to a pulsation capture assembly and an engine system. The pulsation capture assembly includes a flow combiner conduit having a middle portion, an inlet portion, and an outlet portion. The inlet portion includes a first port in communication with the intermediate portion to supply fluid thereto and a second port in communication with the intermediate portion to supply fluid thereto. The second port is fluidly separated from the first port. The outlet portion has a third port in communication with the intermediate portion to receive fluid therefrom. The pulsation capture assembly includes a first telescoping tube positioned downstream of the flow combiner conduit and in communication with the flow combiner conduit to receive fluid therefrom. The pulsation capture assembly includes an elbow conduit positioned downstream of the first telescopic tube. The pulsation capture assembly includes a second telescoping tube positioned downstream of the elbow conduit.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims the benefit and priority of Indian Provisional Patent Application No. 202341060619 filed on September 8, 2023, the contents of which are incorporated by reference in their entirety. Technical Field

[0003] The present disclosure relates generally to the field of exhaust gas recirculation systems. Background Art

[0004] In an internal combustion engine system, exhaust gas recirculation directs exhaust gas from the exhaust manifold to the intake manifold. The recirculated exhaust gas displaces the air in the combustion chamber of the internal combustion engine, thereby reducing the amount of oxygen in the combustion chamber. The reduced amount of oxygen in the combustion chamber results in a lower amount of fuel burned in the combustion chamber, thereby reducing the temperature of the combustion chamber. Summary of the invention

[0005] Various embodiments provide a pulse capture assembly. The pulse capture assembly includes a flow combiner conduit. The flow combiner conduit includes a middle portion. The flow combiner conduit includes an inlet portion, the inlet portion having a first port and a second port, the first port being connected to the middle portion to supply fluid thereto, the second port being connected to the middle portion to supply fluid thereto, and the second port being fluidly separated from the first port. The flow combiner conduit includes an outlet portion, the outlet portion having a third port, the third port being connected to the middle portion to receive fluid therefrom. The pulse capture assembly includes a first bellow, the first bellow being positioned downstream of the flow combiner conduit and being connected to the flow combiner conduit to receive fluid therefrom. The pulse capture assembly includes an elbow conduit positioned downstream of the first bellow. The pulse capture assembly includes a second bellow positioned downstream of the elbow conduit.

[0006] In an embodiment, the pulsation capture component also includes a measurement component, which is positioned downstream of the pulsation capture component, and the measurement component includes: a measurement catheter, the measurement catheter including a contraction portion, a throat portion located downstream of the contraction portion, and an expansion portion located downstream of the throat portion; a first sensor port, the first sensor port is arranged at the contraction portion; and a second sensor port, the second sensor port is arranged at the throat portion.

[0007] In an embodiment, the measurement assembly further comprises a third sensor port disposed at or downstream of the expansion portion, the third sensor port being configured to receive a temperature sensor.

[0008] In an embodiment, the first sensor port is configured to receive a first sensor in the first sensor port, the first sensor being one of a first pressure sensor or a first flow rate sensor; and the second sensor port is configured to receive a second sensor in the second sensor port, the second sensor being one of a second pressure sensor or a second flow rate sensor.

[0009] In an embodiment, the first end of the contraction portion has a first cross-sectional diameter; the second end of the contraction portion has a second cross-sectional diameter smaller than the first cross-sectional diameter; the throat portion has a third cross-sectional diameter that is the same as the second cross-sectional diameter; the first end of the expansion portion near the throat portion has a fourth cross-sectional diameter that is the same as the third cross-sectional diameter; and the second end of the expansion portion opposite to the first end has a fifth cross-sectional diameter that is larger than the fourth cross-sectional diameter.

[0010] In an embodiment, the first extension tube is in communication with the third port of the flow combiner conduit to receive fluid therefrom.

[0011] In an embodiment, a first end of the middle portion close to the inlet portion has a first cross-sectional diameter; a second end of the middle portion opposite to the first end and close to the outlet portion has a second cross-sectional diameter smaller than the first cross-sectional diameter.

[0012] In an embodiment, a first end of the outlet portion close to the middle portion has a third cross-sectional diameter that is the same as the second cross-sectional diameter; and a second end of the outlet portion opposite the first end has a fourth cross-sectional diameter that is larger than the second cross-sectional diameter.

[0013] In an embodiment, the first bellows comprises at least one of a rubber material or a plastic material, such that a size of the first bellows expands or contracts based on a temperature of the first bellows.

[0014] In an embodiment, the elbow conduit includes an elbow conduit body defining a fluid flow path such that a change in direction of the flow path through the elbow conduit is between 160° and 200°.

[0015] In an embodiment, the elbow catheter body has an elliptical cross-sectional shape such that a ratio of a minor axis to a major axis of the elliptical cross-sectional shape is between 1:1.1 and 1:1.5.

[0016] Various other embodiments provide an engine system. The engine system includes an intake manifold, an engine connected to the intake manifold to receive a fluid therefrom, an exhaust manifold connected to the engine to receive a fluid therefrom, and a pulsation capture assembly. The pulsation capture assembly includes a flow combiner conduit. The flow combiner conduit includes an intermediate portion. The flow combiner conduit includes an inlet portion, the inlet portion having a first port and a second port, the first port being connected to the intermediate portion to supply a fluid thereto, the second port being connected to the intermediate portion to supply a fluid thereto, and the second port being fluidly separated from the first port. The flow combiner conduit includes an outlet portion, the outlet portion having a third port, the third port being connected to the intermediate portion to receive a fluid therefrom. The pulsation capture assembly includes a first telescopic tube, the first telescopic tube being positioned downstream of the flow combiner conduit and being connected to the flow combiner conduit to receive a fluid therefrom. The pulsation capture assembly includes an elbow conduit positioned downstream of the first telescopic tube. The pulsation capture assembly includes a second telescopic tube positioned downstream of the elbow conduit.

[0017] Various other embodiments provide an engine system. An engine system includes: an intake manifold; an engine, the engine being connected to the intake manifold to receive fluid therefrom; an exhaust manifold, the exhaust manifold being connected to the engine to receive fluid therefrom; and a pulsation capture assembly, the pulsation capture assembly being connected to the exhaust manifold to receive fluid therefrom and connected to the intake manifold to supply fluid thereto, and the pulsation capture assembly includes: a flow combiner conduit; a first telescoping tube, the first telescoping tube being positioned downstream of the flow combiner conduit and being connected to the flow combiner conduit to receive fluid therefrom; an elbow conduit, the elbow conduit being positioned downstream of the first telescoping tube; and a second telescoping tube, the second telescoping tube being positioned downstream of the elbow conduit, the flow combiner conduit including: a middle portion; an inlet portion, the inlet portion having a first port and a second port, the first port being connected to the middle portion to supply fluid thereto, the second port being connected to the middle portion to supply fluid thereto, the second port being fluidly separated from the first port; and an outlet portion, the outlet portion having a third port, the third port being connected to the middle portion to receive fluid therefrom.

[0018] In an embodiment, the flow combiner conduit is in communication with the exhaust manifold to receive fluid therefrom.

[0019] In an embodiment, the exhaust manifold includes a first outlet portion and a second outlet portion; the first port of the flow combiner conduit communicates with the first outlet portion to receive exhaust gas therefrom; and the second port of the flow combiner conduit communicates with the second outlet portion to receive exhaust gas therefrom.

[0020] In an embodiment, the exhaust manifold includes a first inlet portion, a second inlet portion and one or more flow channels, wherein: the first inlet portion is connected to a first group of cylinders of the engine to receive exhaust gas therefrom; the second inlet portion is connected to a second group of cylinders of the engine to receive exhaust gas therefrom; a first flow channel among the one or more flow channels is configured to guide a first exhaust airflow portion from the first inlet portion to the first outlet portion; and a second flow channel among the one or more flow channels is configured to guide a second exhaust airflow portion from the second inlet portion to the second outlet portion.

[0021] These and other features, together with the organization and manner of operation thereof, will become apparent from the following detailed description when taken in conjunction with the accompanying drawings, wherein like elements have like numerals throughout the several figures described below. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a schematic block diagram of an exhaust gas recirculation system according to an example embodiment.

[0024] Figure 2 It is available for Figure 1 Schematic block diagram of an exhaust manifold in an engine system.

[0025] Figure 3 It is available for Figure 1 A side view of a pulsation capture assembly in an exhaust gas recirculation system, the pulsation capture assembly being shown in a disassembled state.

[0026] Figure 4 It is available for Figure 3 Cross-sectional view of the flow combiner in the pulsation capture assembly.

[0027] Figure 5 It is available for Figure 3 Side cross-sectional view of the elbow catheter in the pulsation capture assembly.

[0028] Figure 6 yes Figure 5 Cross-sectional view of an elbow conduit.

[0029] Figure 7 It is available for Figure 1 A perspective view of the measurement components in an exhaust gas recirculation system.

[0030] Figure 8 It is shown Figure 7 A side cross-sectional view of a portion of a measurement assembly. DETAILED DESCRIPTION

[0031] Embodiments described herein generally relate to exhaust gas recirculation (EGR) systems and / or components of exhaust gas recirculation (EGR) systems. More specifically, embodiments described herein relate to exhaust gas recirculation systems including exhaust pulsation capture components. According to various embodiments, the exhaust gas recirculation system includes an exhaust pulsation capture component and a measurement component positioned downstream of the pulsation capture component.

[0032] According to various embodiments, the exhaust pulsation capture assembly enables the EGR system to mitigate pressure variations (e.g., pressure reduction) across the EGR system. In addition, the measurement assembly implements pressure recovery to control the pressure of the exhaust gas flow flowing through the measurement assembly. In some embodiments, components of the EGR system cooperate to improve (e.g., reduce) break-specific fuel consumption (BSFC) and brake thermal efficiency (BTE).

[0033] In some embodiments, the EGR system is configured to direct exhaust gas from an exhaust manifold of the engine to an intake manifold of the engine. In some embodiments, the engine is an internal combustion engine that consumes fuel to produce mechanical power. In some embodiments, the engine is one of a diesel engine, a gasoline engine, a hydrogen engine, or a natural gas engine.

[0034] In an example embodiment, an EGR system is configured to recirculate exhaust gases from a natural gas engine. The EGR system includes a pulsation capture assembly. In some embodiments, the EGR system includes a measurement assembly. In some embodiments, the EGR system includes a cooler assembly. The cooler assembly can advantageously include a thermal stress relief design to reduce the effects of thermal stress on the EGR system. In some embodiments, the EGR system includes an electronic valve to control the flow rate through the EGR system, or more specifically, to control the flow rate at the outlet of the EGR system. In some embodiments, the EGR system also includes a conduit that fluidly couples the cooler assembly to the measurement assembly.

[0035] Before turning to the drawings, various embodiments of exhaust gas recirculation systems, pulsation capture assemblies, and components of exhaust gas recirculation systems and pulsation capture assemblies are described herein. It should be understood that although various components are described in detail, these details should be considered as examples only. In addition, the details may include variations described herein. Therefore, it should be understood that although various components may be described with respect to an embodiment, any component may be used in any other embodiment described herein unless otherwise specified.

[0036] refer to Figure 1, a block diagram of an engine system 100 according to an example embodiment is shown. The engine system 100 includes an engine 102. The engine system 100 also includes an intake manifold 110 and an exhaust manifold 120 fluidly coupled to the engine 102. The engine system includes an exhaust gas recirculation (EGR) system 200 fluidly coupled to the intake manifold 110 and the exhaust manifold 120. The EGR system 200 is configured to direct at least a portion of the exhaust gas flow from the exhaust manifold 120 to the intake manifold 110.

[0037] exist Figure 1 In the configuration of the engine system 100 is included in a vehicle. The vehicle can be any type of road or off-road vehicle, including but not limited to wheel loaders, forklifts, long-haul trucks, mid-range trucks (e.g., pickup trucks, etc.), cars, coupes, tanks, airplanes, ships, and any other type of vehicle. In other embodiments, the engine system 100 can be embodied in a fixed piece of equipment, such as a generator or generator set. All of these variations are intended to fall within the scope of the present disclosure.

[0038] exist Figure 1 In the configuration shown, the engine 102 is an internal combustion engine (ICE). The ICE consumes fuel, such as diesel, gasoline, hydrogen, natural gas, etc., to generate power. In some embodiments, the engine 102 can be part of a hybrid engine system, which has a combination of an internal combustion engine and at least one electric machine coupled to at least one battery. In some embodiments, the engine system 100 can be configured as a mild-hybrid powertrain, a parallel hybrid powertrain, a series hybrid powertrain, or a series-parallel powertrain.

[0039] The engine 102 includes one or more cylinders 104 (eg, combustion cylinders). The cylinders 104 are disposed within combustion chambers of the engine 102. Figure 1 As shown, the engine 102 includes six cylinders 104. However, it should be understood that the engine 102 may include more than Figure 1 More or fewer cylinders 104 (eg, at least one) are shown. Additionally, the cylinders 104 may be provided in different arrangements (eg, in-line, horizontal, V-shaped, or other suitable cylinder arrangements).

[0040] The engine system 100 includes an intake manifold 110. The intake manifold 110 is configured to direct an intake airflow including air (e.g., ambient air, compressed air, etc.) to the engine 102. In some embodiments, the intake airflow includes fuel. In some embodiments, the intake airflow includes recirculated exhaust gas. Thus, the intake airflow may include one or both of the fuel and the recirculated exhaust gas as well as the air.

[0041] The engine system 100 includes an exhaust manifold 120. The exhaust manifold 120 is configured to direct exhaust gas flow from the engine 102 to one or more downstream components. For example, the exhaust manifold 120 is configured to direct exhaust gas flow from the engine 102 to at least the EGR system 200. Figure 2 The exhaust manifold 120 is described in greater detail.

[0042] In an exemplary arrangement, the engine 102 receives an intake airflow from an intake manifold 110. The intake airflow may include air (e.g., ambient air), fuel, and / or recirculated exhaust gas (e.g., from an EGR system 200). As described above, the engine 102 combusts an air / fuel mixture and / or an air / fuel / exhaust gas mixture and outputs exhaust gas. The exhaust manifold 120 receives an exhaust airflow from the engine 102.

[0043] like Figure 1 As shown, EGR system 200 includes a pulsation capture assembly 202. Pulsation capture assembly 202 is configured to receive at least a portion of the exhaust gas flow (e.g., from exhaust manifold 120). EGR system 200 includes a cooler assembly 266. EGR system 200 includes a measurement assembly 270. EGR system 200 includes a conduit 268 that fluidly couples cooler assembly 266 to measurement assembly 270. EGR system 200 includes a valve assembly. EGR system 200 and its components are described in more detail herein.

[0044] The EGR system 200 is shown along with other components of the engine system 100 (e.g., the engine 102 and components of the engine 102, the intake manifold 110, the exhaust manifold 120, and the downstream device 140). It should be understood that the components of the engine system 100 shown in phantom are shown only as examples. Therefore, some embodiments described herein relate only to the EGR system 200. Other embodiments described herein include the EGR system 200 and one or more other components of the engine system 100, such as the engine 102, the intake manifold 110, and / or the exhaust manifold 120. In these embodiments, for example, the pulsation capture assembly 202 is in communication with the exhaust manifold 120 to receive fluid therefrom and is in communication with the intake manifold 110 to supply fluid thereto.

[0045] like Figure 1As shown, some components (shown in dashed lines) of EGR system 200 are optional. For example, measurement assembly 270, cooler assembly 266, and / or valve assembly 290 are optional. That is, in some embodiments, EGR system 200 includes one or more of measurement assembly 270, cooler assembly 266, and / or valve assembly 290. In other embodiments, the EGR system does not include measurement assembly 270, cooler assembly 266, and valve assembly 290.

[0046] According to various exemplary embodiments, the exhaust gas recirculation system 200 includes a pulsation capture assembly 202. The pulsation capture assembly 202 includes a flow combiner conduit 210, a first telescoping tube 230, an elbow conduit 240, and a second telescoping tube 260. The flow combiner conduit 210 includes a middle portion 216, an inlet portion 214, and an outlet portion 218. The inlet portion 214 includes a first port 220 and a second port 222, the first port 220 being in communication with the middle portion to supply fluid thereto, and the second port 222 being in communication with the middle portion to supply fluid thereto. The second port 222 is fluidly separated from the first port 220. The outlet portion includes a third port 224, the third port 224 being in communication with the middle portion 216 to receive fluid therefrom. The elbow conduit 240 is positioned downstream of the first telescoping tube 230. The second telescoping tube 260 is positioned downstream of the elbow conduit 240.

[0047] In some embodiments, the EGR system 200 further includes a measurement assembly 270. The measurement assembly 270 is positioned downstream of the pulsation capture assembly 202. The measurement assembly 270 includes a measurement conduit 271, a first sensor port 280, and a second sensor port 282 (eg, Figure 8 shown).

[0048] The measuring conduit 271 includes a convergent portion 272, a throat portion 274, and a divergent portion 276. The throat portion 274 is downstream of the convergent portion 272. The divergent portion 276 is downstream of the throat portion 274. The first sensor port 280 is provided at the convergent portion 272. The second sensor port 282 is provided at the throat portion 274.

[0049] In some embodiments, system 100 includes engine 102, intake manifold 110, exhaust manifold 120, downstream device 140, and EGR system 200. Downstream device 140 may be any suitable component positioned downstream of exhaust manifold 120. In some embodiments, downstream device 140 is coupled to exhaust manifold 120 such that downstream device 140 receives at least a portion of the exhaust gas flow from exhaust manifold 120.

[0050] In some embodiments, the downstream device 140 is a turbine device. The turbine device can be any type of turbomachine, such as a turbocharger, a variable geometry turbocharger, a power turbine, etc. In some embodiments, the turbine device can be operably coupled to the engine 102 and / or another component of the engine system 100, such as a transmission system, a battery, an electric motor, or other suitable components.

[0051] In some embodiments, the downstream device 140 is a dual-wastage turbocharger. The dual-wastage turbocharger includes a first inlet and a second inlet. The first inlet is configured to receive a first portion of the exhaust gas flow (e.g., from the exhaust manifold 120). The second inlet is configured to receive a second portion of the exhaust gas flow (e.g., from the exhaust manifold 120).

[0052] As described above, in some embodiments, each of the engine 102, the intake manifold 110, the exhaust manifold 120, and the downstream device 140 is optional. That is, in some embodiments, the system 100 optionally includes the engine 102, the intake manifold 110, the exhaust manifold 120, and / or the downstream device 140.

[0053] The flow path of the gas flow (eg, the exhaust gas flow or a portion of the exhaust gas flow) flowing through the EGR system 200 is Figure 1 In addition, the relative positioning of the components of the EGR system 200 is shown in Figure 1 However, it should be understood that the relative positioning of the components of the EGR system 200 is shown only as an example, and in other embodiments, the components of the EGR system 200 may be positioned in a different order and / or the EGR system 200 may include more than one component. Figure 1 More or fewer components may be shown in FIG. Figure 1 The positioning of the components of EGR system 200 is described.

[0054] like Figure 1 As shown, the EGR system 200 includes a pulsation capture assembly 202. The pulsation capture assembly 202 includes a flow combiner 210, a first bellows 230, an elbow conduit 240, and a second bellows 260. Figure 3 and Figure 4 The structure and function of each component of the pulsation capture assembly 202 is described.

[0055] The flow combiner 210 is coupled to the exhaust manifold 120 . A first end of the flow combiner 210 is coupled to the exhaust manifold 120 . The flow combiner 210 is in communication with the exhaust manifold 120 to receive fluid therefrom. The exhaust manifold 120 is in communication with the flow combiner 210 to supply fluid thereto. A second end of the flow combiner 210 is coupled to the first bellows 230 .

[0056] The first telescoping tube 230 is coupled to the flow combiner 210. The first end of the first telescoping tube 230 is coupled to the flow combiner 210 (e.g., the second end of the flow combiner 210). The first telescoping tube 230 is in communication with the flow combiner 210 to receive fluid therefrom. The first telescoping tube 230 is in communication with the third port 224 of the flow combiner conduit 210 to receive fluid therefrom. The flow combiner 210 is in communication with the first telescoping tube 230 to supply fluid thereto. The second end of the first telescoping tube 230 is coupled to the elbow tube 240.

[0057] The elbow tube 240 is coupled to the first telescopic tube 230. The first end of the elbow tube 240 is coupled to the first telescopic tube 230 (e.g., the second end of the first telescopic tube 230). The elbow tube 240 is in communication with the first telescopic tube 230 to receive fluid therefrom. The first telescopic tube 230 is in communication with the elbow tube 240 to supply fluid thereto. The second end of the elbow tube 240 is coupled to the second telescopic tube 260.

[0058] The second telescoping tube 260 is coupled to the elbow tube 240. The first end of the second telescoping tube 260 is coupled to the elbow tube 240 (e.g., the second end of the elbow tube 240). The second telescoping tube 260 is in communication with the elbow tube 240 to receive fluid therefrom. The elbow tube 240 is in communication with the second telescoping tube 260 to supply fluid thereto. The second end of the second telescoping tube 260 is coupled to the cooler assembly 266.

[0059] References Figure 3-Figure 6 The pulsation capture assembly 202 is described in further detail.

[0060] In some embodiments, the EGR system 200 includes a cooler assembly 266. The cooler assembly 266 is coupled to the second bellows 260. A first end of the cooler assembly 266 is coupled to the second bellows 260 (e.g., a second end of the second bellows 266). The cooler assembly 266 is in communication with the second bellows 260 to receive fluid therefrom. The second bellows 260 is in communication with the cooler assembly 266 to supply fluid thereto. The second end of the cooler assembly 266 is coupled to the conduit 268. In other embodiments, the EGR system 200 does not include the cooler assembly 266. In these embodiments, the second bellows 260 is fluidly coupled to the measurement assembly 270.

[0061] Cooler assembly 266 is configured to facilitate thermal cooling of the exhaust gas flow flowing through cooler assembly 266. For example, cooler assembly 266 may include a heat exchanger configured to reduce the temperature of the exhaust gas flow flowing through cooler assembly 266.

[0062] Conduit 268 is coupled to cooler assembly 266. A first end of conduit 268 is coupled to cooler assembly 266 (e.g., a second end of cooler assembly 266). Conduit 268 is in communication with cooler assembly 266 to receive fluid therefrom. Cooler assembly 266 is in communication with conduit 268 to supply fluid thereto. A second end of conduit 268 is coupled to measurement assembly 270. Conduit 268 is configured to direct exhaust gas flow from cooler assembly 266 to measurement assembly 270.

[0063] In some embodiments, EGR system 200 includes a measurement assembly 270. Measurement assembly 270 is coupled to conduit 268. A first end of measurement assembly 270 is coupled to conduit 268 (e.g., a second end of conduit 268). Measurement assembly 270 is in communication with conduit 268 to receive fluid therefrom. Conduit 268 is in communication with measurement assembly 270 to supply fluid thereto. A second end of measurement assembly 270 is coupled to valve assembly 290. Figure 7 and Figure 8 The measurement assembly 270 is described in further detail. In other embodiments, the EGR system 200 does not include the measurement assembly 270.

[0064] In some embodiments, EGR system 200 includes valve assembly 290. Valve assembly 290 is coupled to measurement assembly 270. A first end of valve assembly 290 is coupled to measurement assembly 270 (e.g., a second end of measurement assembly 270). Valve assembly 290 is in communication with measurement assembly 270 to receive fluid therefrom. Measurement assembly 270 is in communication with valve assembly 290 to supply fluid thereto. A second end of valve assembly 290 is coupled to intake manifold 110. Valve assembly 290 is in communication with intake manifold 110 to supply fluid thereto. Intake manifold 110 is in communication with valve assembly 290 to receive fluid therefrom. In other embodiments, EGR system 200 does not include valve assembly 290. In these embodiments, measurement assembly 270 is fluidly coupled to engine 102 (e.g., via intake manifold 110).

[0065] The valve assembly 290 is configured to selectively provide exhaust gas flow to the intake manifold 110. In some embodiments, the valve assembly 290 includes a valve operable between an open position and a closed position. In the open position, the valve allows a maximum amount of flow rate through the valve. In the closed position, the valve allows a minimum amount of flow rate through the valve (e.g., no flow). In the intermediate position, the valve allows an intermediate flow rate through the valve.

[0066] Reference now Figure 2 , a schematic block diagram of a portion of an engine system 100 according to an example embodiment is shown. Specifically, an exhaust manifold 120 according to an example embodiment is shown.

[0067] As mentioned above, the engine 102 includes one or more cylinders 104. Figure 2 As shown, the engine 102 includes six cylinders 104 (e.g., a first cylinder 104 (a), a second cylinder 104 (b), a third cylinder 104 (c), a fourth cylinder 104 (d), a fifth cylinder 104 (e), and a sixth cylinder 104 (f)). It should be understood that the engine 102 may include more than one cylinder. Figure 2 More or fewer cylinders 104 are shown (eg, at least one). The cylinders 104 may be provided in different arrangements (eg, in-line, horizontal, V-shaped, or other suitable cylinder arrangements).

[0068] The exhaust manifold 120 is fluidly coupled to the engine 102. The exhaust manifold 120 receives exhaust gas flow from the engine 102. In some embodiments, the exhaust manifold 120 includes a first inlet portion 122 and a second inlet portion 124. The first inlet portion 122 is configured to receive exhaust gas flow from a first group of cylinders 104 (e.g., the first cylinder 104 (a), the second cylinder 104 (b), and the third cylinder 104 (c)). The first inlet portion 122 includes one or more inlet ports (e.g., openings, etc.), each of which enables fluid communication between a corresponding cylinder and the exhaust manifold 120. The second inlet portion 124 is configured to receive exhaust gas flow from a second group of cylinders 104 (e.g., the fourth cylinder 104 (d), the fifth cylinder 104 (e), and the sixth cylinder 104 (f)). The second inlet portion 124 includes one or more inlet ports (e.g., openings, etc.), each of which enables fluid communication between a corresponding cylinder and the exhaust manifold 120.

[0069] Exhaust manifold 120 includes a first outlet portion 132, a second outlet portion 134, a third outlet portion 136, and a fourth outlet portion 138. First outlet portion 132 is configured to direct a first portion of the exhaust gas to pulsation capture assembly 202. First outlet portion 132 is fluidly coupled to pulsation capture assembly 202. Second outlet portion 134 is configured to direct a second portion of the exhaust gas to pulsation capture assembly 202. Second outlet portion 134 is fluidly coupled to pulsation capture assembly 202. Third outlet portion 136 is configured to direct a third portion of the exhaust gas to downstream device 140. Third outlet portion 136 is fluidly coupled to downstream device 140. Fourth outlet portion 138 is configured to direct a fourth portion of the exhaust gas to downstream device 140. Fourth outlet portion 138 is fluidly coupled to downstream device 140.

[0070] The exhaust manifold 120 includes one or more flow passages (e.g., conduits, passages, etc.) for directing received exhaust gas (e.g., exhaust gas received at the first inlet portion 122 and / or the second inlet portion 124) to downstream components (e.g., the pulsation capture assembly 202 and / or the downstream device 140). A first flow passage 126 of the one or more flow passages is configured to direct a first portion of the exhaust gas flow from the first inlet portion 122 to the first outlet portion 132. A second flow passage 127 of the one or more flow passages is configured to direct a second portion of the exhaust gas flow from the second inlet portion 124 to the second outlet portion 134. A third flow passage 128 of the one or more flow passages is configured to direct a third portion of the exhaust gas flow from the first inlet portion 122 to the third outlet portion 136. A fourth flow passage 129 of the one or more flow passages is configured to direct a fourth portion of the exhaust gas flow from the second inlet portion 124 to the fourth outlet portion 138.

[0071] The exhaust manifold 120 directs a first portion of the exhaust gas flow from a first group of cylinders (e.g., the first cylinder 104(a), the second cylinder 104(b), and the third cylinder 104(c)) to the pulsation capture assembly 202. The exhaust manifold 120 directs a second portion of the exhaust gas flow from a second group of cylinders (e.g., the fourth cylinder 104(d), the fifth cylinder 104(e), and the sixth cylinder 104(f)) to the pulsation capture assembly 202.

[0072] In the exemplary embodiment, the flow combiner conduit 210 is in communication with the exhaust manifold 120 to receive fluid therefrom. The exhaust manifold 120 includes a first outlet portion 132 and a second outlet portion 134. The first inlet port 220 of the flow combiner conduit is in exhaust gas receiving communication with the first outlet portion 132. The second inlet port 222 of the flow combiner conduit 210 is in exhaust gas receiving communication with the second outlet portion 134. For example, the flow combiner conduit 210 is configured to receive a first exhaust gas flow portion at the first inlet port 220 via the first outlet portion 132, and to receive a second exhaust gas flow portion at the second inlet port 222 via the second outlet portion 234. The exhaust manifold 120 includes a first inlet portion 122, a second inlet portion 124, and one or more flow passages. The first inlet portion 122 is in exhaust gas receiving communication with the first group of cylinders 104 of the engine 102. The second inlet portion 124 is in exhaust gas receiving communication with the second group of cylinders 104 of the engine 102. For example, the first inlet portion 122 is configured to receive a first exhaust gas flow from a first group of cylinders 104 of the engine 102, and the second inlet portion 124 is configured to receive a second exhaust gas flow from a second group of cylinders 104 of the engine 102. A first flow passage 126 of the one or more flow passages is configured to direct a first exhaust gas flow portion (e.g., a portion of the first exhaust gas flow) from the first inlet portion 122 to the first outlet portion 132. A second flow passage 127 of the one or more flow passages is configured to direct a second exhaust gas flow portion (e.g., a portion of the second exhaust gas flow) from the second inlet portion 124 to the second outlet portion 134.

[0073] Reference now Figure 3 , a perspective view of the pulsation capture assembly 202 is shown. The pulsation capture assembly 202 is shown in a disassembled state. In the exemplary embodiment, the pulsation capture assembly 202 for the exhaust gas recirculation system 200 includes a flow combiner conduit 210, a first telescoping tube 230, an elbow conduit 240, and a second telescoping tube 260.

[0074] The flow combiner conduit 210 includes a middle portion 216, an inlet portion 214, and an outlet portion 218. The inlet portion 214 includes a first port 220 and a second port 222, the first port 220 being in communication with the middle portion to supply fluid thereto, and the second port 222 being in communication with the middle portion to supply fluid thereto. The second port 222 is fluidly separated from the first port 220. The outlet portion includes a third port 224, the third port 224 being in communication with the middle portion 216 to receive fluid therefrom.

[0075] The first extension tube 230 is positioned downstream of the flow combiner 210 and communicates with the third port 224 to receive fluid therefrom. The elbow conduit 240 is positioned downstream of the first extension tube 230. The second extension tube 260 is positioned downstream of the elbow conduit 240.

[0076] In some embodiments, the pulsation capture assembly 202 includes a first sealing member 204. The first sealing member 204 is disposed between the exhaust manifold 120 and the pulsation capture assembly 202. The first sealing member 204 is configured to form a seal between the exhaust manifold 120 and the pulsation capture assembly 202.

[0077] The pulsation capture assembly 202 includes a flow combiner 210. Figure 4 , a cross-sectional view of a flow combiner 210 is shown. The flow combiner 210 is a conduit configured to receive two airflows (e.g., a first exhaust airflow portion and a second exhaust airflow portion). The flow combiner 210 receives two airflows from an upstream component (such as the exhaust manifold 120). The flow combiner 210 is configured to merge the two airflows into a single (e.g., merged) airflow. The flow combiner 210 is configured to provide the merged airflow to a downstream component (e.g., the first telescoping tube 230 or another downstream component). In an example embodiment, the geometry of the flow combiner 210 enables the first exhaust airflow portion and the second exhaust airflow portion to mix while reducing turbulence in the merged airflow. For example, the geometry of the flow combiner 210 enables the first exhaust airflow portion and the second exhaust airflow portion to mix so that the flow through the flow combiner 210 is substantially laminar.

[0078] The flow combiner 210 includes a conduit body 212. The conduit body 212 includes an inlet portion 214, an intermediate portion 216, and an outlet portion 218. The inlet portion 214 is disposed at a first end of the conduit body 212. The outlet portion 218 is disposed at a second end of the conduit body 212 opposite the first end. The intermediate portion 216 is disposed between the inlet portion 214 and the outlet portion 218 (e.g., between the first end and the second end of the conduit body 212).

[0079] The inlet portion 214 includes a first port 220 (e.g., a first inlet port) and a second port 222 (e.g., a second inlet port 222). At the inlet portion 214 of the catheter body 212, the first port 220 is separated from the second port 222 by a catheter wall 223. The catheter wall 223 extends from the first end of the catheter body 212 toward the middle portion 216. In some embodiments, the catheter wall 223 extends to or into the middle portion 216. In other embodiments, the catheter wall 223 does not extend into the middle portion 216.

[0080] The first inlet port 220 is configured to receive a first portion of the exhaust gas flow. In some embodiments, the first inlet port 220 is fluidly coupled to the first outlet portion 132 of the exhaust manifold 120 such that the first inlet port 220 receives the first portion of the exhaust gas flow from the exhaust manifold 120 via the first outlet portion 132. The flow combiner 210 is configured to receive the first exhaust gas flow portion at the first inlet port 220 via the first outlet portion 132.

[0081] The second inlet port 222 is configured to receive a second portion of the exhaust gas flow. In some embodiments, the second inlet port 222 is fluidly coupled to the second outlet portion 134 of the exhaust manifold 120 such that the second inlet port 222 receives the second portion of the exhaust gas flow from the exhaust manifold 120 via the second outlet portion 134. The flow combiner 210 is configured to receive the second exhaust gas flow portion at the second inlet port 222 via the second outlet portion 134.

[0082] The dual inlet design of the flow combiner 210 advantageously enables the flow combiner 210 to receive two different exhaust gas flows from the exhaust manifold 120 (eg, a "split manifold"). Figure 2 As described, a first exhaust gas flow portion is received from a first group of cylinders 104 , and a second exhaust gas flow portion is received from a second group of cylinders 104 .

[0083] In some embodiments, the exhaust gas flow has "alternate pulsation". As used herein, "alternate pulsation" refers to alternating flow in the exhaust gas flow caused by the timing of the opening and / or closing of the exhaust valves of the cylinders 104. For example, the flow combiner 210 receives a first "pulsation" of the first exhaust gas flow portion (e.g., via the first port 220) before receiving a second "pulsation" of the second exhaust gas flow portion (e.g., via the second port 222). The flow combiner 210 advantageously facilitates merging the first exhaust gas flow portion and the second exhaust gas flow portion in the flow combiner 210, and due to the alternating pulsations in the first exhaust gas flow portion and the second exhaust gas flow portion, the flow combiner 210 substantially prevents reverse flow. For example, the flow combiner 210 substantially prevents the first exhaust gas flow portion from flowing through the second port 222. The flow combiner 210 substantially prevents the second exhaust gas flow portion from flowing through the first port 220.

[0084] The middle portion 216 of the duct body 212 is configured to receive the first airflow portion and the second airflow portion. The middle portion 216 is configured to allow the first airflow portion and the second airflow portion to mix. In the exemplary embodiment, the first airflow flowing from the first port 220 and the second airflow flowing from the second port 222 enter the middle portion 216 of the duct body 212 and are allowed to mix in the middle portion 216 of the duct body 212. The combined airflow then flows into the outlet portion 218.

[0085] The outlet portion 218 includes a third port 224 (eg, an outlet port). The third port 224 is configured to provide the combined airflow to a downstream component (such as the first bellows 230).

[0086] The first end of the middle portion 216 near the inlet portion 214 has a first cross-sectional diameter. The second end of the middle portion 216 opposite the first end and near the outlet portion 218 has a second cross-sectional diameter less than the first cross-sectional diameter. The first end of the outlet portion 218 near the middle portion 216 has a third cross-sectional diameter substantially similar to or the same as the second cross-sectional diameter. The second end of the outlet portion 218 opposite the first end has a fourth cross-sectional diameter greater than the second cross-sectional diameter. The geometry (e.g., cross-sectional geometry) of the conduit body 212 enables the first airflow and the second airflow to mix while reducing turbulence. Advantageously, when the airflow flows through the flow combiner 210, the reduction or reduction of turbulence in the combined airflow reduces the pressure change (e.g., pressure reduction). For example, the increased diameter of the outlet portion 218 advantageously reduces the speed of the combined airflow. The relative sizes of the third diameter and the fourth diameter can be selected to improve (e.g., reduce) the change in pressure (e.g., pressure reduction). For example, the geometry of the outlet portion 218 reduces flow separation (e.g., turbulence) and / or reduces the speed to increase pressure.

[0087] Return to reference Figure 3 The pulsation capture assembly 202 includes a second sealing member 226. The second sealing member 226 is disposed between the flow combiner 210 and the first telescoping tube 230. The second sealing member 226 is configured to form a seal between the flow combiner 210 and the first telescoping tube 230.

[0088] Pulsation capture assembly 202 includes a first mounting member 228. The first mounting member is disposed between flow combiner 210 and first bellows 230. First mounting member 228 is configured to facilitate coupling flow combiner 210 to first bellows 230. In some embodiments, first mounting member 228 facilitates coupling pulsation capture assembly 202 to engine 102.

[0089] The first telescopic tube 230 is configured to receive the exhaust gas flow from the flow combiner 210. The first telescopic tube 230 is configured to reduce the effect of thermal stress (e.g., mechanical stress caused by temperature changes of the material) on surrounding components (e.g., the flow combiner 210 and / or the elbow conduit 240). In some embodiments, the first telescopic tube 230 is made of a flexible material, such as a rubber material, a plastic material, or other suitable material. The flexible material of the first telescopic tube 230 allows the first telescopic tube 230 to expand and / or contract as the temperature of the first telescopic tube 230 changes (e.g., due to temperature changes of the gas flow flowing through the first telescopic tube 230). For example, the size (e.g., axial size, radial size, circumferential size) of the first telescopic tube 230 expands (e.g., increases) and / or contracts (e.g., decreases) as the temperature of the first telescopic tube 230 changes. As the temperature of the first telescopic tube 230 increases, at least one size of the first telescopic tube 230 increases. As the temperature of the first telescopic tube 230 decreases, at least one size of the first telescopic tube decreases. In this manner, the first extension tube 230 advantageously relieves thermal stress on the pulsation capture assembly 202 and / or the elbow conduit 240 .

[0090] The pulsation capture assembly 202 includes a third sealing member 232. The third sealing member 232 is disposed between the first telescoping tube 230 and the elbow conduit 240. The third sealing member 232 is configured to form a seal between the first telescoping tube 230 and the elbow conduit 240.

[0091] Pulsation capture assembly 202 includes second mounting member 234. Second mounting member 234 is disposed between first extension tube 230 and elbow conduit 240. Second mounting member 234 is configured to facilitate coupling first extension tube 230 to elbow conduit 240. In some embodiments, second mounting member 234 facilitates coupling pulsation capture assembly 202 to engine 102.

[0092] In some embodiments, the first extension tube 230 is substantially prevented from expanding or contracting in the axial dimension because the first extension tube 230 is held between the first mounting member 228 and the second mounting member 234. Therefore, expansion and / or contraction of the first extension tube 230 (e.g., due to temperature changes of the first extension tube 230) is limited to expansion or contraction in the radial and circumferential dimensions.

[0093] The elbow conduit 240 is a conduit configured to direct airflow (eg, a combined airflow) from the flow combiner 210 to a downstream component (such as the cooler assembly 266, the measurement assembly 270, and / or another downstream component). Figure 3 As shown, the first telescoping tube 230 is coupled to a first end of the elbow conduit 240 , and the second telescoping tube 260 is coupled to a second end of the elbow conduit 240 .

[0094] refer to Figure 5 and Figure 6 , the elbow conduit 240 includes an elbow conduit body 242. Figure 6 As shown, the elbow conduit body 242 defines a fluid flow path 244 that is substantially semicircular in shape (e.g., semicircular, semi-elliptical, semi-oval, etc.) such that the direction of the flow path through the elbow conduit 240 changes by approximately 180°, such as between 160° and 200°. The elbow conduit body 242 has an elliptical cross-sectional shape. More specifically, the ratio of the minor axis 246 to the major axis 248 of the elliptical shape is approximately 1:1.3, such as between 1:1.1 and 1:1.5.

[0095] The elbow conduit 240 includes a mounting flange 250 extending outwardly from the elbow conduit body 242. In some embodiments, the mounting flange 250 is integrally formed with the elbow conduit body 242. The mounting flange 250 defines one or more openings 252. The one or more openings 252 are each sized to receive a fastener. When the one or more openings 252 receive the fastener, the fastener couples the elbow conduit 240 to the engine 102. In this manner, the mounting flange 250 enables the elbow conduit 240 to be coupled to the engine 102.

[0096] Return to reference Figure 3 The pulsation capture assembly 202 includes a fourth sealing member 258. The fourth sealing member 258 is disposed between the elbow conduit 240 and the second telescopic tube 260. The fourth sealing member 258 is configured to form a seal between the elbow conduit 240 and the second telescopic tube 260.

[0097] Pulsation capture assembly 202 includes third mounting member 256. Third mounting member 256 is disposed between elbow conduit 240 and second telescoping tube 260. Third mounting member 256 is configured to facilitate coupling elbow conduit 240 to second telescoping tube 260. In some embodiments, third mounting member 256 facilitates coupling pulsation capture assembly 202 to engine 102.

[0098] The second telescoping tube 260 is configured to receive the exhaust gas flow from the elbow conduit 240. The second telescoping tube 260 is configured to mitigate the effects of thermal stress (e.g., mechanical stress caused by temperature changes of the material) on surrounding components (e.g., the elbow conduit 240 and / or downstream components, such as the cooler assembly 266, the measurement assembly 270, the valve assembly 290, and / or another downstream component). In some embodiments, the second telescoping tube 260 is made of a flexible material, such as a rubber material, a plastic material, or other suitable material. The flexible material of the second telescoping tube 260 allows the second telescoping tube 260 to expand and / or contract as the temperature of the second telescoping tube 260 changes (e.g., due to temperature changes of the gas flow flowing through the second telescoping tube 260). For example, the dimensions (e.g., axial dimensions, radial dimensions, circumferential dimensions) of the second telescoping tube 260 expand (e.g., increase) and / or contract (e.g., decrease) as the temperature of the second telescoping tube 260 changes. As the temperature of the second telescoping tube 260 increases, at least one dimension of the second telescoping tube 260 increases. As the temperature of the second bellows 260 decreases, at least one dimension of the second bellows decreases. In this manner, the second bellows 260 advantageously relieves thermal stress on the pulsation capture assembly 202 and / or the elbow conduit 240.

[0099] The pulsation capture assembly 202 includes a fifth sealing member 264. The fifth sealing member 264 is disposed between the second bellows 260 and a downstream component (e.g., the cooler assembly 266, the measurement assembly 270, the valve assembly 290, and / or another downstream component). The fifth sealing member 264 is configured to form a seal between the second bellows 260 and the downstream component.

[0100] Pulsation capture assembly 202 includes fourth mounting member 262. Fourth mounting member 262 is disposed between second telescoping tube 260 and a downstream component (e.g., cooler assembly 266, measurement assembly 270, valve assembly 290, and / or another downstream component). Fourth mounting member 262 is configured to facilitate coupling second telescoping tube 260 to the downstream component. In some embodiments, fourth mounting member 262 facilitates coupling pulsation capture assembly 202 to engine 102.

[0101] In some embodiments, the second telescoping tube 260 is substantially prevented from expanding or contracting in the axial dimension because the second telescoping tube 260 is held between the third mounting member 256 and the fourth mounting member 262. Therefore, the expansion and / or contraction of the second telescoping tube 260 (e.g., due to temperature changes of the second telescoping tube 260) is limited to expansion or contraction in the radial dimension and the circumferential dimension.

[0102] Reference now Figure 7 and Figure 8, showing a perspective view of the measurement assembly 270 and a side cross-sectional view showing a portion of the measurement assembly 270. In an exemplary embodiment, the measurement assembly 270 is a Venturi-style pressure recovery device configured to measure the flow rate of the exhaust gas flow by generating a pressure change.

[0103] The measuring assembly 270 includes a measuring conduit 271. The measuring conduit 271 includes a contraction portion 272, a throat portion 274, and an expansion portion 276. The contraction portion 272 is disposed at a first end of the measuring assembly 270. The expansion portion 276 is disposed at a second end of the measuring assembly 270. The throat portion 274 is disposed between the contraction portion 272 and the expansion portion 276.

[0104] The first end of the contraction portion 272 near the first end of the measurement assembly 270 has a first cross-sectional diameter. In an exemplary embodiment, the first cross-sectional diameter is about 34 millimeters (mm) (e.g., between 30 mm and 38 mm). The second end of the contraction portion 272 opposite the first end and near the throat portion 274 has a second cross-sectional diameter that is smaller than the first cross-sectional diameter. In an exemplary embodiment, the second cross-sectional diameter is about 20 mm (e.g., between 18 mm and 22 mm). The throat portion 274 has a third cross-sectional diameter that is substantially constant and equal to the second cross-sectional diameter. The first end of the expansion portion 276 near the throat portion 274 has a fourth cross-sectional diameter that is substantially similar or the same as the third cross-sectional diameter. The second end of the expansion portion 276 opposite the first end has a fifth cross-sectional diameter that is larger than the fourth cross-sectional diameter. In an exemplary embodiment, the fifth cross-sectional diameter is about 32 mm (e.g., between 28 mm and 36 mm). In an exemplary embodiment, the slope of the expansion portion 276 defined between the first end of the expansion portion 276 and the second end of the expansion portion 276 is about 9.25°.

[0105] The geometry of the measurement conduit 271 creates pressure changes in the exhaust gas flow flowing through the measurement conduit 271. For example, the reduced diameter of the contraction portion 272 creates a mechanical obstruction to generate back pressure, and the relatively small cross-sectional diameter of the throat portion 274 increases the flow rate and reduces the pressure. The increased diameter of the expansion portion 276 causes a pressure increase and reduces the turbulence introduced. Advantageously, the geometry of the expansion portion 276 reduces reverse flow, which in turn reduces measurement errors.

[0106] The measurement assembly 270 includes a first sensor port 280 disposed at the constricted portion 272. The first sensor port 280 is configured to receive a first sensor therein. The first sensor may be a first pressure sensor or a first flow rate sensor.

[0107] The measurement assembly 270 includes a second sensor port 282 disposed at the throat portion 274. The second sensor port 282 is configured to receive a second sensor therein. The second sensor may be a second pressure sensor or a second flow rate sensor.

[0108] In some embodiments, the measurement assembly 270 includes a third sensor port 284 disposed at or downstream of the expansion portion 276. The third sensor port is configured to receive a third sensor. The third sensor may be a temperature sensor.

[0109] It should be noted that the term "exemplary" used herein to describe various embodiments is intended to indicate that such embodiments are possible examples, representatives and / or illustrations of possible embodiments (and such terms are not intended to imply that such embodiments are necessarily particular or excellent examples).

[0110] The terms "coupled," "connected," and similar terms as used herein mean the joining of two members directly or indirectly to one another. Such joining may be fixed (e.g., permanent) or movable (e.g., removable or releasable). Such joining may be achieved by the two members, or the two members and any additional intermediate members, being integrally formed as a single unitary body with one another or by the two members, or the two members and any additional intermediate members, being attached to one another.

[0111] References herein to element positions (e.g., "top," "bottom," "above," "below," etc.) are only used to describe the orientation of different elements in the drawings. It should be noted that the orientation of different elements may be different according to other example embodiments, and such variations are intended to be covered by the present disclosure.

[0112] It is important to note that the structure and arrangement of the various example embodiments are merely illustrative. Although only a few embodiments are described in detail in the present disclosure, it will be readily appreciated by those skilled in the art who review the present disclosure that many modifications (e.g., changes in the size, dimensions, structure, shape and proportion of the various elements, different parameters, mounting arrangements, use of materials, colors, orientations, etc.) are possible without substantially departing from the novel teachings and advantages of the subject matter described herein. For example, the integrally formed elements shown may be composed of a plurality of parts or elements, the positions of the elements may be reversed or otherwise changed, and the nature or number of discrete elements, or the positions may be changed or varied. According to optional embodiments, the order or sequence of any process or method steps may be changed or rearranged. Other substitutions, modifications, changes, and omissions may also be made in the design, operating conditions, and arrangements of the various example embodiments without departing from the scope of the concept presented herein.

[0113] Although this specification contains many specific implementation details, these should not be interpreted as limiting the scope of any invention or the content that can be claimed, but rather as a description of the features of a specific implementation for a specific invention. Certain features described in this specification in the context of a separate embodiment can also be implemented in combination in a single embodiment. On the contrary, the various features described in the context of a single embodiment can also be implemented in multiple embodiments individually or in any suitable sub-combination. In addition, although the features may be described above as acting in a specific combination and even initially claimed as such, one or more features from the claimed combination may be deleted from the combination in some cases, and the claimed combination may be directed to a sub-combination or a variant of the sub-combination.

Claims

1. A pulsation capture component, comprising: A flow combiner conduit, the flow combiner conduit comprising: middle part; an inlet portion having a first port communicating with the intermediate portion to supply fluid thereto and a second port communicating with the intermediate portion to supply fluid thereto, the second port being fluidly isolated from the first port; and an outlet portion having a third port in communication with the intermediate portion to receive fluid therefrom; a first bellows positioned downstream of the flow combiner conduit and in communication with the flow combiner conduit to receive fluid therefrom; an elbow conduit positioned downstream of the first telescoping tube; and A second telescoping tube is positioned downstream of the elbow conduit.

2. The pulsation capture assembly according to claim 1, further comprising a measurement assembly, the measurement assembly being positioned downstream of the pulsation capture assembly, the measurement assembly comprising: A measuring catheter, the measuring catheter comprising: Contraction part; a throat portion located downstream of the constricted portion; and a diverging portion, the diverging portion being located downstream of the throat portion; a first sensor port disposed at the constricted portion; and A second sensor port is disposed at the throat portion.

3. The pulsation capture assembly according to claim 2, wherein: The measurement assembly further comprises a third sensor port disposed at or downstream of the expansion portion, the third sensor port being configured to receive a temperature sensor; and / or wherein the first sensor port is configured to receive a first sensor therein, the first sensor being one of a first pressure sensor or a first flow rate sensor, and The second sensor port is configured to receive a second sensor therein, the second sensor being one of a second pressure sensor or a second flow rate sensor; and / or wherein the first end of the contraction portion has a first cross-sectional diameter, The second end of the constricted portion has a second cross-sectional diameter that is smaller than the first cross-sectional diameter, the throat portion having a third cross-sectional diameter that is the same as the second cross-sectional diameter, A first end of the expansion portion proximate the throat portion has a fourth cross-sectional diameter that is the same as the third cross-sectional diameter, and A second end of the expansion portion opposite the first end has a fifth cross-sectional diameter greater than the fourth cross-sectional diameter.

4. The pulsation capture assembly according to any one of claims 1 to 3, wherein: The first extension tube is in communication with the third port of the flow combiner conduit to receive fluid therefrom.

5. The pulsation capture assembly of claim 1, wherein: A first end of the intermediate portion proximate the inlet portion has a first cross-sectional diameter; A second end of the intermediate portion opposite the first end and proximate the outlet portion has a second cross-sectional diameter that is smaller than the first cross-sectional diameter.

6. The pulsation capture assembly of claim 5, wherein: A first end of the outlet portion proximate the intermediate portion has a third cross-sectional diameter that is the same as the second cross-sectional diameter; and A second end of the outlet portion opposite the first end has a fourth cross-sectional diameter that is greater than the second cross-sectional diameter.

7. The pulsation capture assembly according to any one of claims 1-3 and 5-6, wherein: The first bellows includes at least one of a rubber material or a plastic material such that a size of the first bellows expands or contracts based on a temperature of the first bellows.

8. The pulsation capture assembly according to any one of claims 1-3 and 5-6, wherein: The elbow conduit includes an elbow conduit body defining a fluid flow path such that a change in direction of the fluid flow path through the elbow conduit is between 160° and 200°.

9. The pulsation capture assembly according to claim 8, wherein: The elbow catheter body has an elliptical cross-sectional shape such that a ratio of a minor axis to a major axis of the elliptical cross-sectional shape is between 1:1.1 and 1:1.

5.

10. An engine system comprising: Intake manifold; an engine in communication with the intake manifold to receive fluid therefrom; an exhaust manifold in communication with the engine to receive fluid therefrom; and The pulsation capture assembly according to any one of claims 1 to 9, the pulsation capture assembly being in communication with the exhaust manifold to receive fluid therefrom and being in communication with the intake manifold to supply fluid thereto.

11. The engine system according to claim 10, wherein: The flow combiner conduit is in communication with the exhaust manifold to receive fluid therefrom.

12. The engine system of claim 11, wherein: The exhaust manifold includes a first outlet portion and a second outlet portion; the first port of the flow combiner conduit being in communication with the first outlet portion to receive exhaust gas therefrom; and The second port of the flow combiner conduit is in communication with the second outlet portion to receive exhaust gas therefrom.

13. The engine system of claim 12, wherein: The exhaust manifold includes a first inlet portion, a second inlet portion, and one or more flow passages, wherein: the first inlet portion being in communication with a first group of cylinders of the engine to receive exhaust gas therefrom; the second inlet portion being in communication with a second group of cylinders of the engine to receive exhaust gas therefrom; a first flow passage of the one or more flow passages configured to direct a first exhaust gas flow portion from the first inlet portion to the first outlet portion; and A second flow passage of the one or more flow passages is configured to direct a second exhaust gas flow portion from the second inlet portion to the second outlet portion.

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