Pipe connection arrangement for a fluid management system

Abstract

A tubing connection arrangement for a fluid management system, comprising: a tubing nut for releasably connecting an end portion of a tube to a fluid port of a fluid management system, comprising a first portion having a sawtooth outer profile and a second portion for engagement with a connection point portion of the fluid management system; an elongate drive member having a first end portion having a sawtooth outer profile which cooperates with the sawtooth outer profile of the tubing nut, the first end portion being concentrically engaged with a supplemental guide member adapted to be fixed in position adjacent the connection point portion of the fluid management system, whereby when the elongate drive member is engaged with the supplemental guide member and the second portion of the tubing nut is engaged with the connection point portion, the sawtooth outer profiles are permitted to mesh together such that rotation of the elongate drive member causes the tubing nut to correspondingly rotate to clamp or unclamp the end portion to the fluid port.

Description

Technical Field

[0001] This disclosure relates to a piping connection arrangement for a fluid management system. Specifically, this disclosure relates to a fuel piping connection arrangement for a fuel management system of a vehicle, wherein the fuel management system includes a fuel injector. This disclosure also relates to a fluid management system for a vehicle, specifically a fluid management system including a fuel injector. Furthermore, this disclosure relates to a vehicle including such a piping connection arrangement and / or fluid management system. This disclosure is applicable to vehicles, specifically heavy-duty vehicles such as trucks, buses, and construction equipment. Although this disclosure is described with reference to trucks, it is not limited to this particular type of vehicle, but can also be applied to other types of vehicles such as passenger cars, industrial construction machinery, or working machines in the field of construction equipment such as articulated cranes, dump trucks, wheel loaders, etc. This disclosure can also be applied to other types of industrial machinery, engines, marine vessels, and applications. Background Technology

[0002] In a vehicle's fluid management system (such as an engine's fuel system), new components need to be installed and regular service maintenance is required to ensure reliable and durable operation. Such operations typically include or involve installing pipes, such as connecting or disconnecting one or more fuel lines to one or more fuel injectors in the fuel management system.

[0003] One challenge during pipe installation is the lack of space for any necessary tightening tools when installing pipes in a confined space leading to the pipe connection point via a side inlet. An example of such an environment in a vehicle is the injector installation environment under the valve cover or rocker arm cover and between the engine valve springs. Typically, fuel lines may need to be connected to injectors, where the fuel line connection point is located between the springs in a confined space, and the pipe further bends relatively close to its connection point, thus preventing access for tightening tools. Another example of such an installation might be a pneumatic variable valve actuation system where a complex assembly is installed in a confined space under a rocker arm cover.

[0004] Therefore, it is desirable to provide an improved piping connection arrangement for a fluid management system. Specifically, it is desirable to provide an improved piping connection arrangement for a fluid management system for a vehicle. Summary of the Invention

[0005] The objective of this disclosure is to facilitate the installation of piping into fluid management systems, such as those in vehicles. This objective is achieved, at least in part, by the piping connection arrangement according to the invention. This objective is also achieved, at least in part, by the following other preferred embodiments. These preferred embodiments relate to advantageous implementations.

[0006] According to a first aspect of this disclosure, a pipe connection arrangement for a fluid management system is provided. The pipe connection arrangement includes a pipe nut for releasably connecting an end portion of a pipe to a fluid port of the fluid management system. The pipe nut includes a first portion having a serrated outer profile and a second portion configured to engage a connection point portion of the fluid management system. The pipe connection arrangement also includes an elongated drive member having a first end portion including a serrated outer profile. The serrated outer profile is configured to mate with the serrated outer profile of the pipe nut. The first end portion is further configured to concentrically engage with a supplementary guide member adapted to be fixedly arranged adjacent to the connection point portion of the fluid management system. Thus, when the elongated drive member engages with the supplementary guide member and the second portion of the pipe nut engages with the connection point portion, the serrated outer profile is allowed to engage with the serrated outer profile of the pipe nut, such that rotation of the elongated drive member causes the pipe nut to rotate accordingly to clamp the end portion to the fluid port or release the end portion from the fluid port.

[0007] By providing a pipe nut for releasably connecting the end portion of the pipe to the fluid port of the fluid management system, the arrangement is configured to clamp and retain the pipe to the fluid port of the fluid management system in a fluid-tight manner.

[0008] Thus, the proposed piping connection arrangement helps improve the functional interface between piping and the fluid management system. This disclosure is based on the understanding that the design of components with piping connections that constitute a particular assembly unit requires ample space to ensure that piping can be installed and tightened / removed with acceptable difficulty. This typically involves providing the necessary minimum space for access to tightening tools, which leads to a relatively complex overall design and larger dimensions. Sometimes, assembly components can be designed to be more compact, at the cost of designing and using special tools that can accommodate tighter spaces to tighten piping for each specific installation. In other cases, special clamps can be used instead of pipe nuts. This type of arrangement allows for a more compact design, but usually at the cost of an increased number of individual parts, introducing loose parts (screws, clamps) that may fall off and / or be forgotten in the engine after assembly. Furthermore, the use of clamps can often require appropriate space and may also complicate the design of mating components.

[0009] Furthermore, the proposed pipe connection arrangement provides a coaxial pipe inlet for the pipe nut tightening tool, thus allowing for pipe installation of this configuration, which might otherwise be difficult to install due to space constraints in common engine environments such as heavy vehicles. The proposed pipe connection arrangement also allows for the use of standard tools while reducing the need for additional individual parts such as clamps and screws.

[0010] It should be noted that fluid can refer to any type of gaseous and liquid fluid medium. For example, a fluid is fuel. Fuel is provided in a gaseous or liquid phase. A fluid can also be a liquid, such as oil used in engines, for example, lubricating oil. However, a liquid can also be transmission fluid, oil used to lubricate shafts or fluids in cooling systems, working fluids in braking systems, working fluids in hydraulic power transmissions and / or working fluids in control systems, etc.

[0011] While pipe connection arrangements can be used in various types of fluid management systems to connect pipes to components of the fluid management system, the exemplary embodiments of this disclosure are particularly useful for fluids such as fuels, for example, hydrogen fuel. Therefore, according to one exemplary embodiment, the pipe connection arrangement is a pipe connection arrangement for connecting a hydrogen fuel line to a fluid management system in the form of an injector assembly of an engine (e.g., an internal combustion engine of a vehicle).

[0012] It should also be readily understood that the elongated actuating member may only be part of the piping connection arrangement during the installation and removal of piping fittings. In this context, the elongated actuating member can be considered a complementary tool for connecting piping to a fluid management system.

[0013] Typically, when the pipe nut is threaded into the corresponding threaded portion of the connection point, the axis of rotation of the pipe nut can be substantially parallel to the central axis of the supplementary guide member.

[0014] The slender drive member can typically be arranged and configured to engage with the serrated outer contour of the pipe nut.

[0015] The first end portion may include a groove arranged concentrically around the central axis of the elongated drive member and adapted to at least partially accommodate the outer end portion of the supplementary guide member. This further improves the positioning of the elongated drive member relative to the pipe nut.

[0016] The elongated drive member may include a cylindrical groove arranged concentrically with and extending from the end face of the first end portion. The cylindrical groove and the supplementary guide member may form a positional clearance fit when the supplementary guide member and the elongated drive member are concentrically engaged.

[0017] In other examples, the supplementary guide member may be a segment formed by a cylindrical portion having an inner diameter. The cylindrical portion may be included in a fluid management system. The inner diameter of the cylindrical portion may be configured such that, when the elongated drive member and the supplementary guide member are concentrically engaged, the inner diameter of the segment forms a positional clearance fit with the maximum diameter of the serrated outer profile.

[0018] Typically, when the first end portion of the elongated drive member engages with the supplementary guide member, the elongated drive member can be arranged adjacent to the pipe nut, and the corresponding central axes of the elongated drive member and the pipe nut can be arranged parallel to each other. This further improves the positioning of the elongated drive member relative to the pipe nut. Thus, the elongated drive member can typically be arranged adjacent to the pipe nut, as seen in a plane extending perpendicularly to the corresponding central axes of the elongated drive member and the pipe nut.

[0019] Pipe connection arrangements typically include supplementary guide members. These guide members are positioned at a distance from the connection point such that, when the pipe nut engages with the connection point, the axis of rotation of the pipe nut is substantially parallel to the central axis of the guide member. This further improves the positioning of the slender drive member relative to the pipe nut. The distance typically refers to a distance in the lateral and / or longitudinal directions.

[0020] The supplementary guiding member can be positioned adjacent to the pipe connection point. In this way, the supplementary guiding member is associated with the fluid port.

[0021] For example, a supplementary guide member is a guide pin arranged in a fluid management system. The supplementary guide member may be at least partially cylindrical in shape.

[0022] The piping connection arrangement may also include additional supplementary guide members. These additional guide members can be positioned at substantially the same lateral distance from the connection point as the supplementary guide members, but at different angular positions relative to the supplementary guide members around the circumference of the connection point. This further improves the installation of the piping to the fluid management system. Furthermore, the above configuration with additional supplementary guide members improves the timing of the meshing engagement between the serrated profiles.

[0023] Additional supplementary guide components can be designed to be essentially the same as the supplementary guide components.

[0024] The supplementary guide member can be a first supplementary guide member, and the additional supplementary guide member can be a second supplementary guide member. The second supplementary guide member can be arranged so that its position relative to the axis of rotation of the pipe nut is asymmetrical with respect to the position of the first supplementary guide member.

[0025] Additional guide members can be positioned at angular locations that are not multiples of 360 degrees divided by the number of teeth on the serrated outer contour. This allows for the use of less complex patterns with serrated contours that typically require more than one relative position of the driving and driven members to achieve sufficiently efficient force transmission.

[0026] Additional supplementary guide members can be positioned at an angle greater than 120 degrees relative to the supplementary guide members. Such an arrangement can at least partially overcome the tilt of the pipe nut on its threads, which increases thread friction and reduces useful torque.

[0027] The pipe connection arrangement may include an additional elongated drive member having a corresponding first end portion including a corresponding outer contour, the corresponding outer contour being configured to engage with a serrated outer contour upon engagement with the additional elongated drive member and subsequent rotation of the additional elongated drive member. The corresponding first end portion may be configured to at least partially accommodate a corresponding outer end portion of an additional supplementary guide member.

[0028] The second part can be the threaded outer contour of the pipe nut. Alternatively, the second part can be the threaded inner contour of the pipe nut. If the second part is provided as a threaded outer contour, then the second part can be a portion of the outer surface of the pipe nut and is arranged to be spaced apart from the serrated outer contour of the first part.

[0029] The serrated outer contour of the elongated drive component can define a hexagonal star pattern, such as the TORX profile. The serrated contour of the elongated drive component can define the standard TORX profile, and the diameter of the cylindrical groove can be substantially equal to the diameter of the central groove of the "SecurityTORX" screwdriver tip.

[0030] Pipe connection arrangements may also include pipes. For example, a pipe nut may be arranged around a portion of the pipe.

[0031] According to a second aspect of this disclosure, a fluid management system is provided. The fluid management system includes a piping connection arrangement according to a first aspect of this disclosure.

[0032] The effects and characteristics of the second aspect are largely similar to those described above regarding the first aspect.

[0033] Additional guiding components can be separate parts attached to the fluid management system.

[0034] The supplementary guide member may be included in the fluid management system. The supplementary guide member may be configured as a cylindrical protruding section. Alternatively, the supplementary guide member may be configured as a cylindrical recessed section with an inner diameter.

[0035] The supplementary guiding component can be a machined cylindrical protruding section in the fluid management system. The supplementary guiding component can also be a machined cylindrical recessed section in the fluid management system.

[0036] The fluid management system may include a fuel injector assembly for an internal combustion engine. The fuel injector assembly may be a hydrogen fuel injector assembly configured to inject hydrogen fuel into the combustion chamber of the internal combustion engine. For example, the fluid management system may include a housing in which pipes are connected to a connection point portion via a pipe connection arrangement. Additionally, the fuel injector assembly is housed within the housing, wherein the fluid ports of the injectors are arranged in fluid communication with the connection point portion.

[0037] In one example, the fluid management system may include a housing for accommodating the injector assembly, and the piping arrangement may be configured to connect piping to a connection point portion, thereby arranging the fluid ports of the injector in fluid communication with the connection point portion.

[0038] According to a third aspect of this disclosure, a vehicle is provided that includes a fluid management system according to any of the exemplary embodiments described with reference to the second aspect and / or a piping connection arrangement according to any of the exemplary embodiments described with reference to the first aspect. The vehicle may be a truck, such as a heavy-duty truck. However, this disclosure is not limited to trucks and heavy-duty trucks. Rather, the vehicle may be any type of vehicle, such as a truck, a car, a machine designed to perform an operation, etc.

[0039] The effects and characteristics of the third aspect are largely similar to those described above with reference to the first and / or second aspects.

[0040] The fluid management system can be a component of the internal combustion engine. Alternatively, the fluid management system can be a separate part connected to the internal combustion engine.

[0041] Other features and advantages of this disclosure will become apparent upon studying the appended claims and the following description. Those skilled in the art will recognize that different features of this disclosure can be combined to form embodiments other than those described below, without departing from the scope of this disclosure. Attached Figure Description

[0042] The above and additional objectives, features, and advantages of this disclosure will be better understood through the following exemplary and non-limiting detailed description of exemplary embodiments thereof, as illustrated in the accompanying drawings: Figure 1 This is a side view illustrating an example of a vehicle in truck form; the vehicle includes an internal combustion engine system having a fluid management system and piping connections arranged according to an exemplary embodiment of this disclosure; Figure 2 schematically shown Figure 1 The portion of the engine includes an exemplary embodiment of the fluid management system and piping connection arrangement according to this disclosure; Figures 3A to 3C An exemplary embodiment of a fluid management system and piping connection arrangement according to this disclosure is schematically shown; Figure 3D Another exemplary embodiment of the fluid management system and piping connection arrangement according to this disclosure is schematically shown; Figure 4A yes Figures 3A to 3C An exploded perspective view of the fluid management system and piping connection layout in the diagram; Figure 4B schematically shown Figures 3A to 3C A component in the piping connection arrangement; and Figure 5A and Figure 5B schematically showing the use of Figures 3A to 3C The piping arrangement in the diagram outlines the sequence in which the pipes are connected to the fluid management system. Detailed Implementation

[0043] This disclosure will now be described more fully below with reference to the accompanying drawings, in which exemplary embodiments of the disclosure are illustrated. However, this disclosure may be embodied in many different forms and should not be construed as limited to the embodiments described herein; rather, these embodiments are provided for thoroughness and completeness. Similar reference characters refer to similar elements throughout this description.

[0044] Special Reference Figure 1 A vehicle 1 in truck form is provided. The vehicle includes an internal combustion engine system having an internal combustion engine 6 (such as a diesel engine). Furthermore, the engine or engine system includes a fluid management system 8 according to any of the exemplary embodiments of this disclosure. The fluid management system 8 includes a piping connection arrangement 10 according to any of the exemplary embodiments of this disclosure. In the following... Figure 2 , Figures 3A to 3D , Figures 4A to 4B as well as Figures 5A to 5B In the following section, some examples of pipe connection arrangements 10 will be described in more detail.

[0045] Figure 2 Schematic illustration of installation to Figure 1 An exemplary embodiment of a portion of the fluid management system 8 of an internal combustion engine 6. The internal combustion engine 6 includes one or more cylinders 6a and an intake manifold 6b in fluid communication with the cylinders. The internal combustion engine 6 also includes an intake valve 6c disposed in the intake manifold to regulate the flow rate of compressed air toward the combustion chamber 6d of the internal combustion engine 6.

[0046] like Figure 2As shown, the fluid management system 8 includes an injector 8a. Therefore, the fluid management system 8 is configured herein as an injector assembly including the injector 8a. The injector 8a is configured to inject fuel for combustion in the combustion chamber 6d. Therefore, the injector 8a is a fuel injector. Figure 2 In this system, the fluid management system 8 is a so-called port injector fluid management system. In such a system, the injector 8a is arranged to inject fuel into the intake manifold 6b upstream of the intake valve 6c. Other arrangements of the injector 8a are also conceivable. For example, the injector may be arranged in the cylinder head of the cylinder, through which fuel is injected into the cylinder 6a in the form of a fuel spray.

[0047] The fuel used here is gasoline. In other examples, the fuel is hydrogen. In other examples, the fuel may be diesel. For diesel ICE systems, fuel is preferably injected at a pressure in the range of 600 to 3000 bar. Typically, for engine systems using EGR, about 1000 to 2500 bar may be preferred, while in the absence of EGR, it is about 800 to 1400 bar. For hydrogen ICE systems, hydrogen fuel can be injected into the combustion chamber 6d and toward the piston at a low injection pressure between 15 and 60 bar. However, for other gaseous ICE systems, the fuel injector can be controlled to inject gaseous fuel into the combustion chamber at an injection pressure of up to about 500 bar. Therefore, the fuel line 12 needs to be securely connected to the injector 8a.

[0048] For example, fuel injector 8a is connected to and in fluid communication with the fuel tank (not shown). The number of fuel injectors may be equal to the number of cylinders in the ICE. Each fuel injector is arranged in fluid communication with the fuel tank. Each of the fuel injectors is connected to the fuel tank via a corresponding pipe 12, such as... Figure 2 As shown. Additionally, as... Figure 2 As depicted, pipe 12 is connected to fluid management system 8 via pipe connection arrangement 10, which is depicted as an injector assembly. Figure 2 In this configuration, the pipe connection arrangement 10 is configured to releasably connect the end portion 9 of the pipe 12 to a fluid port of the fluid management system 8 (i.e., the injector assembly). The fluid port may be a component of the injector 8a or a fluid port of the injector assembly in fluid communication with the injector 8a.

[0049] Now refer to Figures 3A to 3C , Figures 4A to 4B as well as Figures 5A to 5B The fluid management system 8 and the piping connection arrangement 10 are described in more detail. Figure 3D It is used for Figure 1Another example of the pipe connection arrangement 10 and fluid management system 8 in the vehicle.

[0050] The fluid management system 8 and piping connection arrangement 10 will be described in orientation toward ICE 6, as shown in the example. Figures 3A to 3C As shown. However, for example Figure 3A The orientation of the fluid management system 8 and the piping connection arrangement 10 depicted is merely an example to illustrate the attachment of the pipe 12 to the fluid management system 8, and other attachment arrangements and orientations of the fluid management system 8 and the piping connection arrangement 10 can be envisioned. For example... Figure 3A As indicated, the fluid management system 8 has extensions in the longitudinal direction X, the transverse direction Y, and the vertical direction Z. Similarly, components of the pipe connection arrangement 10 have extensions in the longitudinal direction X, the transverse direction Y, and the vertical direction Z. Some components may also have a circular cross-section and a cylindrical shape. These types of components may also be defined as having extensions in the axial direction A, the radial direction R, and the circumferential direction C. Typically, as for example... Figure 3A As shown, when the pipe 12 is connected to the fluid management system 8 via the pipe connection arrangement 10, the direction Z corresponds to the axial direction A. The components constituting the pipe connection arrangement 10 will be described further herein.

[0051] Turn now Figures 3A to 3C It describes the use of Figure 2 An exemplary implementation of the piping connection arrangement 10 of the fluid management system 8. Figure 3A It is a perspective view of the piping connection arrangement 10 and the fluid management system 8, wherein the piping 12 is connected to the fluid management system 8 by means of the piping connection arrangement 10. Figure 3B This is a cross-sectional view of the pipe connection arrangement 10 and the fluid management system 8, seen in cross-sectional planes extending in the longitudinal direction X and the vertical direction Z. Figure 3B In the middle, the pipe 12 is connected to the fluid management system 8 by means of the pipe connection arrangement 10. Figure 3C This is another cross-sectional view of the pipe connection arrangement 10 and the fluid management system 8 as seen in a cross-sectional plane extending in the longitudinal direction X and the transverse direction Y, wherein the pipe 12 is connected to the fluid management system 8 by means of the pipe connection arrangement 10.

[0052] like Figures 3A to 3C As shown, the fluid management system 8 includes a housing 8b for the injector 8a. Additionally, the housing 8b includes an external recess 8c for the pipe 12. The external recess 8c defines a limited space for any tools required to connect and disconnect the pipe 12 to the housing 8b.

[0053] The fluid management system 8 includes a piping arrangement for connecting the pipe 12 to the fluid port 2, such as, for example... Figure 3B As shown. Now refer to Figures 3A to 3C Combination Figure 4A An example describing the arrangement of pipe connections. Figure 4A yes Figures 3A to 3C Exploded perspective view of the fluid management system 8 and piping connection arrangement 10.

[0054] For example in Figure 3C and combined Figure 4A As shown, the pipe connection arrangement 10 includes a pipe nut 11. The pipe nut 11 has a first portion 13, which is here configured as a head portion. The first portion 13 defines an outer and an inner side. Therefore, the first portion 13 is generally configured in the form of an annular portion, similar to a conventional nut. For example... Figure 3C As shown, the first portion 13 includes a serrated outer contour 14. The serrated outer contour 14 can be considered as the first outer contour 14 of the pipe nut 11.

[0055] The pipe nut 11 defines an inner bore for receiving the end portion 9 of the pipe 12. In this example, the pipe nut 11 is arranged around the pipe 12. The pipe nut 11 is arranged around the pipe 12 such that the end portion 9 of the pipe 12 is outside the pipe nut 11. That is, the pipe nut 11 is arranged circumferentially around the pipe 12, while the end portion 9 of the pipe 12 protrudes away from the pipe nut 11 in the axial direction A of the pipe 12 (which also corresponds to the vertical direction Z in this case).

[0056] The pipe nut 11 also includes a second portion 15. The second portion 15 is configured to engage with a connection point portion 4 of the fluid management system 8. The connection point portion 4 is in fluid communication with the fluid port 2 of the injector 8a. Thus, the second portion 15 is configured to be indirectly connected to the fluid port 2 of the injector 8a of the fluid management system 8 to provide a fluid connection between the second portion 15 and the fluid port 2. In this example, the second portion 15 includes a threaded outer profile 16, such as... Figure 4A As depicted in the figure. The threaded outer contour 16 can be considered as the second outer contour of the pipe nut 11. Therefore, the second portion 15 includes the second outer contour of the pipe nut 11. In other examples, although not shown, the second portion may be the threaded inner contour of the pipe nut. Alternatively or additionally, the second portion may be a snap-fit ​​connection portion. In such examples, the connection point portion 4 typically includes a corresponding snap-fit ​​connection portion.

[0057] For example, the threaded outer contour 16 is a conventional thread, often referred to as a screw thread. A screw thread is defined as a helical, uniformly segmented ridge on the surface of the pipe nut 11. The connection point portion 4 typically includes a corresponding threaded portion (not shown) configured to engage with the threaded outer contour 16.

[0058] For this purpose, via the first part 13 and the second part 15, the pipe nut 11 is configured to releasably connect the end portion 9 of the pipe 12 to the connection point portion 4 of the fluid management system 8, and thus connect the pipe 12 into fluid communication with the fluid port 2 of the injector 8a. With this connection configuration, the arrangement of the pipe nut 11 is configured to clamp and hold the pipe 12 to the connection point portion 4 of the fluid management system 8 in a fluid-tight manner. In other examples, the pipe nut 11 is configured to directly and releasably connect the end portion 9 of the pipe 12 to the connection point portion 4, which takes the form of the fluid port 2 of the injector 8a. The connection point portion is integral to the injector here. However, in other examples, the connection point portion may be an additional portion and / or a portion separate from the injector. Therefore, the connection point portion 4 may be an interconnecting portion arranged to interconnect the pipe 12 with the injector 8a.

[0059] In addition, for example Figure 4A As shown, the pipe connection arrangement 10 includes an elongated drive member 20. The elongated drive member 20 is a tool component used during the assembly and disassembly of the pipe 12 to the fluid management system 8, but not typically during the supply of fluid to the fluid management system 8 through the pipe 12. The elongated drive member 20 extends in the axial direction A and in the radial direction R. The elongated drive member 20 also has a central axis Ac extending in the axial direction A. The axial direction is parallel to the vertical direction Z. The central axis Ac of the elongated drive member 20 corresponds here to the axis of rotation of the elongated drive member 20. Figure 4B Show Figure 4A Other parts of the slender drive member 20. For example... Figure 4B As shown, the elongated drive member 20 has a substantially cylindrical shape with a significant length in the axial direction A.

[0060] The elongated drive member 20 includes a first end portion 21. The first end portion 21 includes a serrated outer contour 22. The serrated outer contour 22 is configured to mate with a serrated outer contour 14 of the pipe nut 11. Furthermore, the serrated outer contour 22 and the serrated outer contour 14 are complementary in shape to provide functional interaction between the serrated outer contour 22 and the serrated outer contour 14 during rotation of the elongated drive member 20, such as... Figure 5A and Figure 5B As shown in the image.

[0061] In this example, the serrated outer contour 22 of the elongated drive member 20 has a hexagonal star pattern. Here, the hexagonal star pattern is set in the form of a TORX profile. Therefore, the serrated outer contour 22 is configured to mate with the serrated outer contour 14 of the pipe nut 11.

[0062] Thus, the elongated drive member 20 is arranged and configured to engage with the serrated outer contour 14 of the pipe nut 11, as in, for example... Figure 3C The same description is found in the text.

[0063] like Figure 4B As shown, the elongated drive member 20 includes a second end portion 24. The second end portion 24 is arranged at the opposite axial ends of the elongated drive member 20. That is, the first end portion 21 and the second end portion 24 are opposite axial end portions of the elongated drive member 20. The second end portion 24 is the head portion of the elongated drive member 20. The second end portion 24 is adapted to engage with tools such as wrenches and screwdrivers. For example, the second end portion 24 is a hexagonal head portion. Other designs for the second end portion are also conceivable, as long as the elongated drive member 20 can be manipulated by a tool. The second end portion 24 and the first end portion 21 can also be separated from each other by an intermediate cylindrical portion extending in the axial direction and between the first end portion 21 and the second end portion 24.

[0064] In addition, the pipe connection arrangement 10 includes supplementary guiding components 30, such as in Figures 3A to 3C And also in Figure 4A As shown in the diagram. The supplementary guide member 30 has a corresponding central axis Ac1. The supplementary guide member 30 can be configured in several different shapes and arrangements. In this example, the supplementary guide member 30 is a guide pin. Furthermore, the supplementary guide member 30 is adapted to be arranged in the fluid management system 8 at a location adjacent to the pipe connection point 4. Therefore, the supplementary guide member 30 is associated with the fluid port 2. The supplementary guide member 30 includes an outer end portion 31. For example, Figure 4A As shown, the outer end portion 31 defines a cylindrical portion. Therefore, the supplementary guide member 30 is at least partially cylindrical in shape. Thus, the supplementary guide member 30 has a circular cross-section and a significant extension in the axial direction A. However, the supplementary guide member can also be configured in other designs, such as having a rectangular cross-section and a significant length in the axial direction A.

[0065] exist Figures 3A to 3C In this embodiment, the supplementary guide member 30 is a separate part attached to the fluid management system 8. Thus, the supplementary guide member 30 is adapted to be fixedly arranged adjacent to the connection point portion 4 of the fluid management system 8. In other examples, the supplementary guide member 30 is an integral part of the fluid management system 8.

[0066] For example, the supplementary guide member 30 is a cylindrical protruding section 32, such as... Figures 3A to 3C As shown in the diagram. In other examples, the supplementary guide member 30 may be a cylindrical recessed section 33, such as... Figure 3D As shown. In Figure 3D In this configuration, the supplementary guide member 30 is provided in the form of a cylindrical recessed section 33 with an inner diameter 34. The cylindrical protruding section and / or the cylindrical recessed section may be machined in the fluid management system 8.

[0067] The elongated drive member 20 and the supplementary guide member 30 are arranged and configured to engage with each other. For example, the first end portion 21 is configured to engage concentrically with the supplementary guide member 30. For example, as... Figure 4B As depicted, the first end portion 21 includes a groove 23. The groove 23 is arranged concentrically around the central axis Ac of the elongated drive member 20. The groove 23 is also adapted to at least partially receive the outer end portion 31 of the supplementary guide member 30.

[0068] like Figure 4B As depicted, the groove 23 is a cylindrical groove. The cylindrical groove 23 is arranged concentrically with the first end portion 21. In addition, the cylindrical groove 23 extends from the end face of the first end portion 21.

[0069] Furthermore, the diameter of the cylindrical groove 23 is substantially equal to the diameter of the central groove of a properly sized so-called SecurityTORX® screwdriver tip. The Security TORX® or Anti-interference TORX screwdriver tip has the exact same external shape as a regular TORX® screwdriver tip, but with a small hole drilled in the end to accommodate the shape and geometry of the supplementary guide member 30. However, other shapes and diameters can be selected for other types of slender drive members.

[0070] Note that the supplementary guide member 30 can be designed to have tolerance relative to the cylindrical groove 23. Therefore, in Figures 3A to 3C In the process, when the supplementary guide member 30 and the slender drive member 20 are concentrically engaged, the cylindrical groove 23 and the supplementary guide member 30 form a positional clearance fit.

[0071] As mentioned above, Figure 3D Another example of the design of the supplementary guide member 30 is schematically shown. In this example, the supplementary guide member is a recessed section 33 formed by a cylindrical portion having an inner diameter 34. Here, the cylindrical recessed section 33 is part of the fluid management system 8. Therefore, the fluid management system 8 includes a cylindrical recessed section 33 with an inner diameter 34 (instead of...) Figure 3C (as shown in the extended section). Figure 3DAs shown, the inner diameter 34 of the cylindrical recessed section 33 is set such that when the elongated drive member 20 and the supplementary guide member 30 are concentrically engaged, the inner diameter 34 of the cylindrical recessed section 33 forms a positional clearance fit with the maximum diameter of the serrated outer contour 22. Unless otherwise expressly stated herein, Figure 3D Examples may include those referenced in this article. Figure 1 , Figure 2 , Figures 3A to 3C , Figures 4A to 4B as well as Figures 5A to 5B Any other features, examples, and / or aspects mentioned.

[0072] Such as combination Figure 3C exist Figure 3B As shown, the supplementary guide member 30 is positioned at a certain distance from the connection point portion 4. For example, the supplementary guide member 30 is positioned at a certain lateral distance from the connection point portion 4. The supplementary guide member 30 can also be positioned at a certain longitudinal distance from the connection point portion 4. Furthermore, the supplementary guide member 30 can be positioned at a certain distance from the connection point portion 4 in both the lateral and longitudinal directions.

[0073] Turn back to pipe nut 11 and Figure 3C The pipe nut 11 has a central axis Ac2. The central axis Ac2 of the pipe nut 11 corresponds here to the axis of rotation of the pipe nut 11. Therefore, the pipe nut 11 has an axis of rotation Ac2. Figure 3C As shown, when the pipe nut 11 is threadedly engaged with the thread of the connection point portion 4, the rotation axis Ac2 of the pipe nut 11 is substantially parallel to the central axis Ac1 of the supplementary guide member 30, that is, parallel to the cylindrical portion of the supplementary guide member 30.

[0074] like Figure 3C The diagram further illustrates that when the elongated drive member 20 engages with the supplementary guide member 30 and the second portion 15 of the pipe nut 11 engages with the connection point portion 4, the serrated outer contour 22 and the serrated outer contour 14 of the pipe nut 11 are allowed to mesh together. Thus, rotation of the elongated drive member 20 causes the pipe nut 11 to rotate accordingly to clamp the end portion 9 to the fluid port 2 or to release the end portion 9 from the fluid port 2.

[0075] With the above arrangement, the connection from pipe 12 to connection point 4 can be achieved by manipulating the slender drive member 20 and pipe nut 11.

[0076] More specifically, when the serrated outer contour 22 of the elongated drive member 20 engages with the serrated outer contour 14 of the pipe nut 11, the rotation of the elongated drive member 20 about its central axis Ac causes the serrated outer contour 22 of the elongated drive member 20 to correspondingly rotate the pipe nut 11 about its central axis Ac2, thereby tightening or loosening the pipe 12 relative to the pipe connection point 4. In this example, as... Figure 4A As shown, the pipe connection point 4 is disposed on the housing 8b of the injector assembly (fluid management system 8), while the fluid port 2 is disposed on the injector 8a. The fluid port 2 is in fluid communication with the connection point 4. In other examples, the fluid port 2 corresponds to the pipe connection point 4.

[0077] As mentioned above, and in, for example Figure 3C As shown, the supplementary guide member 30 is arranged adjacent to the pipe nut 11. Furthermore, the corresponding central axis Ac of the elongated drive member 20 and the central axis Ac2 of the pipe nut 11 are arranged parallel to each other. In other words, the corresponding central axis Ac of the elongated drive member 20 and the central axis Ac2 of the pipe nut 11 are in the same plane. Therefore, the corresponding central axis Ac of the elongated drive member 20 and the central axis Ac2 of the pipe nut 11 are arranged adjacent to each other, as seen in a plane extending perpendicularly to the corresponding central axis Ac1 of the supplementary guide member 30 and the axis of rotation (central axis) Ac2 of the pipe nut 11. Moreover, when the first end portion 21 of the elongated drive member 20 engages with the supplementary guide member 30, the elongated drive member 20 is arranged adjacent to the pipe nut 11, as seen in a plane extending perpendicularly to the corresponding central axis Ac of the elongated drive member 20 and the axis of rotation Ac2 of the pipe nut 11.

[0078] Typically, although there are no strict requirements, the pipe connection arrangement 10 includes additional supplementary guiding members 30' and additional slender driving members 20', such as Figures 3A to 3C as well as Figures 4A to 4B As shown in the diagram. In other words, the pipe connection arrangement 10 includes an additional supplementary guide member 30'. The additional supplementary guide member 30' is substantially the same in design as the supplementary guide member 30. Therefore, the supplementary guide member 30 is the first supplementary guide member 30, and the additional supplementary guide member 30' is the second supplementary guide member.

[0079] like Figure 3C As shown, the additional supplementary guide member 30' is arranged so that its position is asymmetrical with respect to the rotation axis Ac2 of the pipe nut 11 and the position of the first supplementary guide member 30.

[0080] In addition, such as Figure 3CAs shown, the additional supplementary guide member 30' is positioned at a substantially the same lateral or side distance from the connection point portion 4 as the first supplementary guide member 30, but at a different angular position relative to the angular position of the first supplementary guide member 30 around the circumference of the connection point portion 4.

[0081] For example, such as Figure 3C As shown, the additional supplementary guide member 30' is positioned relative to the supplementary guide member 30 at an angle alfa α greater than 120 degrees. Figure 3C As shown, angle α is the sum of α1 and α2. This arrangement can at least partially overcome the tilt of the pipe nut on its threads, which increases thread friction and reduces useful torque. In practice, a supplementary guide 30 is typically used for the initial tightening and then an additional supplementary guide 30' is used for additional tightening. Positioning the additional supplementary guide 30' more towards the opposite side of the pipe nut 11 helps to counteract the tilt introduced when using the supplementary guide 30.

[0082] Alternatively, the additional supplementary guide member 30' is positioned at an angular location that is not a multiple of 360 degrees divided by the number of teeth of the serrated outer profile 14. This arrangement allows for less complex patterns of the serrated profile that typically require more than one relative position between the elongated drive member 20 and the pipe nut 11 to achieve efficient force transmission. In practice, once a specific angular position is reached relative to the pipe nut 11, the elongated drive member 20 may sometimes slip relative to the pipe nut 11. In such cases, the elongated drive member 20 moves to another supplementary guide member 30 (to continue tightening the pipe nut), where the supplementary guide member 30 is unlikely to slip.

[0083] In some designs, such as Figures 3A to 3C as well as Figures 4A to 4B As shown, the pipe connection arrangement 10 includes an additional elongated drive member 20' having a corresponding first end portion 21' including a corresponding outer contour 22'. The outer contour 22' is configured to engage with a serrated outer contour 14 upon engagement with the additional elongated drive member 20' and subsequent rotation of the additional elongated drive member 20'. The corresponding first end portion 21' is configured to at least partially receive the corresponding outer end portion 31' of an additional supplementary guide member 30'. The corresponding first end portion 21' may also have a corresponding groove (such as groove 23) configured to at least partially receive the outer end portion 31' of the additional supplementary guide member 30'.

[0084] Figure 5A and Figure 5B schematically showing the use of Figures 3A to 3C as well as Figures 4A to 4BThe pipe connection arrangement 10 in the middle connects the pipe 12 to the fluid management system 8 in sequence.

[0085] exist Figure 5A The diagram shows the pipe connection arrangement 10 and pipe 12 in a state where the connection point 4 between pipe 12 and fluid management system 8 is disconnected and / or detached. Figure 5B The diagram shows the pipe connection arrangement 10 and the pipe 12 at the connection point 4 of the fluid management system 8, thereby forming a liquid-tight configuration for fluid. The pipe 12 is securely connected to the fluid management system 8 via the pipe connection arrangement 10, allowing fluid to be delivered to the ejector 8a through the pipe 12.

[0086] More specifically, in the first assembly state of pipe 12 to fluid management system 8 (e.g.) Figure 5A As shown in the diagram and indicated by reference numeral 110, a pipe 12 with a pipe nut 11 is inserted into the connection point portion 4 of the fluid management system 8. The pipe 12 with the pipe nut 11 is inserted into the connection point portion 4 of the fluid management system 8 along a vertical direction Z, which approximately corresponds to the axial direction A of the pipe nut 11 and the pipe 12.

[0087] A pipe nut 11 with a pipe 12 is inserted into a hole in a defined connection point portion 4 of a fluid management system 8 until the end portion 9 is at least partially positioned within the fluid management system 8.

[0088] Subsequently, in the second assembly state, as indicated by reference numeral 120, each of the elongated drive members 20 and 20' moves toward the corresponding supplementary guide members 30, 30' in an axial direction A that corresponds substantially to the vertical direction Z. As mentioned above, the elongated drive member 20 is arranged to engage with the supplementary guide member 30 when the groove 23 of the first end portion 21 at least partially surrounds or accommodates the outer end portion 31 of the supplementary guide member 30. Similarly, the additional elongated drive member 20' is arranged to engage with the additional (second) supplementary guide member 30' when the corresponding groove of the corresponding first end portion 21' at least partially surrounds or accommodates the corresponding outer end portion 31' of the additional (second) supplementary guide member 30'. In this state, the corresponding elongated drive members 20, 20' are arranged to be rotatable about the corresponding outer end portions 31, 31'.

[0089] Furthermore, due to the relative arrangement of the supplementary guide member 30, the elongated drive member 20, and the pipe nut 11 (which engages with the connection point portion 4), the serrated outer contour 22 and the serrated outer contour 14 of the pipe nut 11 are arranged to engage with each other. Similarly, due to the relative arrangement of the additional supplementary guide member 30', the additional elongated drive member 20', and the pipe nut 11 (which engages with the connection point portion 4), the serrated outer contour 22' and the serrated outer contour 14 of the pipe nut 11 are arranged to engage with each other from the other side of the pipe nut 11.

[0090] Therefore, in the second assembly state 120, the pipe nut 11 is threadedly engaged with the threaded connection point 4, wherein the serrated outer contour 14 of the pipe nut 11 engages with the serrated outer contour 22 of the elongated drive member 20, such that rotation of the elongated drive member 20 causes the pipe nut 11 to rotate accordingly, thereby clamping the end portion 9 of the pipe 12 to the fluid port 2 or releasing the end portion 9 of the pipe 12 from the fluid port 2. The rotation of the corresponding elongated drive members 20, 20' in... Figure 5B The diagram schematically illustrates, and corresponds to, the third assembly state 130, i.e., the final assembly state. Thus, during the subsequent rotation of the elongated drive member 20 in its circumferential direction, and when the elongated drive member 20 engages with the supplementary guide member 30, the serrated outer contour 22 of the elongated drive member 20 engages and meshes with the outer contour 14 of the pipe nut 11 to achieve tightening of the pipe 12 relative to the pipe connection point 4 when rotating in the first circumferential direction (e.g., in the clockwise direction), or to achieve disengagement of the pipe 12 relative to the pipe connection point 4 when rotating in the second opposite circumferential direction (e.g., in the counterclockwise direction).

[0091] From, for example Figure 5B This can be seen in other figures (e.g., Figures 3A to 3C As also shown in the diagram, when pipe 12 is inserted and connected to connection point 4 of fluid management system 8, the axial extension A of the components of pipe connection arrangement 10 approximately coincides with the vertical extension Z of fluid management system 8. Therefore, as Figure 5B As depicted, the components of the pipe connection arrangement and the end portion 9 of the pipe 12 are substantially oriented parallel to the vertical direction Z of the fluid management system 8.

[0092] It should also be understood that during the installation of pipe 12 to the connection point 4 of the fluid management system and the removal of pipe 12 from the connection point 4, the elongated drive members 20, 20' are only part of the pipe connection arrangement 10.

[0093] Furthermore, it should be readily understood that when pipe end 9 is detached, it may remain in almost the same position as when it was tightened (i.e., around pipe 12), such as, for example... Figure 4A As shown in the image.

[0094] As mentioned above, it should be readily understood that the pipe connection arrangement 10 can be provided using only one elongated drive member 20 and one supplementary guide member 30. Similarly, the pipe connection arrangement 10 can be provided by alternately applying one elongated drive member 20 to two supplementary guide members 30, 30'. When the pipe nut 11 is connected and tightened, the elongated drive member tool is removed until it is necessary to disconnect or retighten the pipe connection later. Therefore, the example with two elongated drive members 20, 20' and two supplementary guide members 30, 30' is merely an example to illustrate the function of the pipe connection arrangement 10.

[0095] In summary, a pipe connection arrangement 10 for a fluid management system 8 is provided. The pipe connection arrangement 10 includes a pipe nut 11 for releasably connecting the end portion 9 of a pipe 12 to a fluid port 2 of the fluid management system 8. The pipe nut includes a first portion 13 having a serrated outer profile 14 and a second portion 15 configured to engage with a connection point portion 4 of the fluid management system 8. The pipe connection arrangement 10 also includes...

[0096] An elongated drive member 20 has a first end portion 21 with a serrated outer contour 22. The serrated outer contour 22 is configured to engage with the serrated outer contour 14 of a pipe nut 11. The first end portion 21 is further configured to engage concentrically with a supplementary guide member 30, which is adapted to be fixedly arranged adjacent to the connection point portion 4 of the fluid management system 8. Furthermore, when the elongated drive member 20 engages with the supplementary guide member 30 and the second portion 15 of the pipe nut 11 engages with the connection point portion 4, the serrated outer contour 22 is permitted to mesh with the serrated outer contour 14 of the pipe nut 11, such that rotation of the elongated drive member 20 causes a corresponding rotation of the pipe nut 11 to clamp the end portion 9 to or release the end portion from the fluid port 2.

[0097] Additionally, this disclosure relates to a fluid management system 8, which includes a piping connection arrangement 10 according to any of the examples described and illustrated herein.

[0098] Furthermore, this disclosure relates to vehicle 1, which includes any of the piping connection arrangements 10 and / or fluid management systems 8 as described and illustrated herein.

[0099] The pipe connection arrangement 10 is made of steel (such as stainless steel) or any other suitable metallic material. However, the pipe connection arrangement 10 may be made of lightweight materials (such as plastic materials, lightweight steel, aluminum or similar materials).

[0100] The terminology used herein is for descriptive purposes only and is not intended to limit this disclosure. As used herein, unless the context clearly indicates otherwise, the singular forms “a,” “an,” and “the” are intended to include the plural forms as well. As used herein, the term “and / or” includes any and all combinations of one or more of the associated listed items. It should also be understood that the terms “comprising” and / or “including” as used herein specify the presence of the stated feature, integer, step, operation, element, and / or component, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof.

[0101] It should be understood that although the terms first, second, etc., may be used herein to describe various elements, these elements should not be limited by these terms. These terms are used only to distinguish one element from another. For example, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element, without departing from the scope of this disclosure.

[0102] In this document, relative terms such as “below” or “above,” or “upper” or “lower,” or “horizontal” or “lateral” or “vertical” may be used to describe the relationship between one element and another, as shown in the figures. It will be understood that, in addition to the orientations depicted in the figures, these terms and those discussed above are intended to encompass different orientations of the system. Therefore, it should be noted that reference should be made to the accompanying figures (e.g., Figures 3A to 5B The location of the fluid management system 8 described in the document uses the terms top and bottom, upper and lower, and any other similar terms, and the system may be positioned in other orientations and used in other orientations.

[0103] It will be understood that when an element is referred to as "connected" or "coupled" to another element, the element may be directly connected or directly coupled to the other element, or there may be intermediate elements. In contrast, when an element is referred to as "directly connected to" or "directly coupled to" another element, there are no intermediate elements.

[0104] Unless otherwise specified, all terms used herein (including technical and scientific terms) shall have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure pertains. It will also be understood that the terms used herein shall be interpreted as having the same meaning as they have in the context of this specification and in the relevant art, and shall not be interpreted in an idealized or overly formal sense unless expressly defined herein.

[0105] Furthermore, it should be readily understood that although some parts are mentioned and / or shown to have certain dimensions and shapes, the dimensions and shapes of these parts may also be provided in other shapes and dimensions, such as parts having cross-sections similar to those of circles, ellipses, rectangles and triangles or any other conceivable cross-sections, provided that no other content related to these parts is mentioned and the parts provide their function.

[0106] It should be understood that this disclosure is not limited to the aspects shown in the foregoing description and drawings; rather, those skilled in the art will recognize that many changes and modifications can be made within the scope of this disclosure and the appended claims. Several aspects have been disclosed in the drawings and description for illustrative purposes only and not for limiting purposes, and the scope of the inventive concept is set forth in the following claims.

Claims

1. A piping connection arrangement (10) for a fluid management system (8), the piping connection arrangement comprising: - A pipe nut (11) for releasably connecting the end portion (9) of a pipe (12) to a fluid port (2) of the fluid management system, the pipe nut comprising a first portion (13) having a serrated outer profile (14) and a second portion (15) configured to engage a connection point portion (4) of the fluid management system. - An elongated drive member (20) having a first end portion (21) having a serrated outer contour (22) configured to mate with the serrated outer contour (14) of the pipe nut, the first end portion being further configured to concentrically engage with a supplementary guide member (30) adapted to be fixedly arranged adjacent to the connection point portion of the fluid management system. Thus, when the elongated drive member (20) engages with the supplementary guide member and the second portion (15) of the pipe nut engages with the connection point portion (4), the serrated outer contour (22) is allowed to engage with the serrated outer contour (14) of the pipe nut, such that rotation of the elongated drive member causes the pipe nut to rotate accordingly to clamp the end portion (9) to the fluid port or to release the end portion from the fluid port.

2. The pipe connection arrangement according to claim 1, wherein the first end portion (21) includes a groove (23) arranged concentrically around the central axis (Ac) of the elongated drive member and also adapted to at least partially accommodate the outer end portion (31) of the supplementary guide member.

3. The pipe connection arrangement according to any one of the preceding claims, wherein when the first end portion (21) of the elongated drive member engages with the supplementary guide member, the elongated drive member is arranged adjacent to the pipe nut, and the corresponding central axes of the elongated drive member and the pipe nut are arranged parallel to each other.

4. The pipe connection arrangement according to claim 1 or 2, wherein the pipe connection arrangement further includes the supplementary guide member, the supplementary guide member being positioned at a certain distance from the connection point such that when the pipe nut is engaged with the connection point, the axis of rotation of the pipe nut is substantially parallel to the central axis of the supplementary guide member.

5. The pipe connection arrangement according to claim 1 or 2, further comprising an additional supplementary guide member (30'), the additional supplementary guide member being positioned at substantially the same lateral distance from the connection point portion (4) and the supplementary guide member (30), but at different angular positions relative to the supplementary guide member (30) around the circumference of the connection point portion (4).

6. The pipe connection arrangement according to claim 5, wherein the additional supplementary guide member (30') is positioned at an angular location that is not a multiple of 360 degrees divided by the number of teeth of the serrated outer contour (14).

7. The pipe connection arrangement according to claim 5, wherein the additional supplementary guide member (30') is positioned at an angle (α) greater than 120 degrees relative to the supplementary guide member (30).

8. The pipe connection arrangement according to claim 5, wherein the pipe connection arrangement includes an additional elongated drive member (20') having a corresponding first end portion (21') including a corresponding outer contour (22') configured to engage with the serrated outer contour (14) upon engagement with the additional elongated drive member and subsequent rotation of the additional elongated drive member, the corresponding first end portion being configured to at least partially accommodate the corresponding outer end portion (31') of the additional supplementary guide member (30').

9. The pipe connection arrangement according to claim 1 or 2, wherein the second part (15) is the threaded outer contour or the threaded inner contour of the pipe nut.

10. The pipe connection arrangement according to claim 1 or 2, wherein the serrated outer contour (22) of the elongated drive member (20) defines a hexagonal star pattern, such as a TORX profile.

11. A fluid management system comprising a piping connection arrangement according to any one of the preceding claims.

12. The fluid management system of claim 11, wherein the supplementary guiding member is a separate part attached to the fluid management system.

13. The fluid management system of claim 11, wherein the supplementary guiding member is included in the fluid management system and is configured as a cylindrical protruding section (32) or a cylindrical recessed section (33) having an inner diameter.

14. The fluid management system according to any one of claims 11 to 13, wherein the fluid management system includes a fuel injector assembly for an internal combustion engine.

15. The fluid management system of claim 14, wherein the fluid management system includes a housing for receiving the injector of the fuel injector assembly, and the piping connection arrangement is configured to connect piping to a connection point portion, whereby the fluid port of the injector is arranged in fluid communication with the connection point portion.

16. A vehicle comprising any one of the piping connection arrangement according to any one of claims 1 to 10 and / or any one of the fluid management systems according to any one of claims 11 to 15.

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