Fluid distributor for an injection system, in particular a fuel distributor strip for a fuel injection system of a mixture-compression, externally ignited internal combustion engine

Abstract

The invention relates to a fluid distributor (1) for an injection device (100), in particular a fuel distribution strip (1) for a fuel injection device (100) of a mixture-compression, externally ignited internal combustion engine, the fluid distributor comprising a tubular base body (2), which is preferably processed by single-stage or multi-stage forging, wherein a first high-pressure outlet (9A), a second high-pressure outlet (9B), a third high-pressure outlet (9C) and a fourth high-pressure outlet are arranged on the base body (2), wherein the second high-pressure outlet (9B) is located relative to the first high-pressure outlet (9C). A) is arranged offset at a predetermined distance (24) along the longitudinal axis (4) of the tubular base body (2) in a first direction (X1), wherein the third high-pressure outlet (9C) is arranged offset at the predetermined distance (24) along the longitudinal axis (4) relative to the second high-pressure outlet (9B) in the first direction (X1), wherein the fourth high-pressure outlet (9D) is arranged offset at the predetermined distance (24) along the longitudinal axis (4) relative to the third high-pressure outlet (9C) in the first direction (X1).

Description

Technical Field

[0001] The present invention relates to a fluid distributor for an injection system, in particular a fuel distributor for a fuel injection system of a mixture-compression, externally-ignited internal combustion engine, and to an injection system. In particular, the present invention relates to the field of fuel injection systems for mixture-compression, externally-ignited internal combustion engines, wherein a fuel distributor bar is arranged, for example, in the engine compartment of a motor vehicle, is fastened to a cylinder head of the internal combustion engine, and serves to inject fuel directly into the combustion chamber of the internal combustion engine during operation. Background Art

[0002] From the abstract and figures of JP 2018-158372 A, it is known to produce a base body for a distributing strip by forging. Here, the material is forged eccentrically, so that five connecting elements and three retaining elements are forged on the forged base body, the connecting elements being drilled after forging, and the retaining elements being likewise drilled after forging.

[0003] In the base body for a distribution strip manufactured according to the method known from the abstract and drawings of JP 2018-158372 A, the fixing elements formed on the base body by forging and then drilled have high strength, so that the entire distribution strip can be reliably assembled and fixed using suitable accessories, for example to a cylinder head in the engine compartment. Summary of the Invention

[0004] The fluid distributor according to the invention and the spraying device according to the invention have the following advantages: an improved design and mode of operation are possible. In particular, a direct attachment of the valve to the high-pressure outlet is possible.

[0005] A fluid distributor for an injection device, in particular a fuel distribution strip for a fuel injection device of a mixture-compression, externally ignited internal combustion engine, is proposed, the fluid distributor having a tubular base body, which is preferably processed by single-stage or multi-stage forging, wherein a first high-pressure outlet, a second high-pressure outlet, a third high-pressure outlet and a fourth high-pressure outlet are arranged on the base body, wherein the second high-pressure outlet is arranged offset relative to the first high-pressure outlet in a first direction along the longitudinal axis of the tubular base body at a predetermined distance, wherein the third high-pressure outlet is arranged offset relative to the second high-pressure outlet in the first direction along the longitudinal axis at the predetermined distance, wherein the fourth high-pressure outlet is arranged offset relative to the third high-pressure outlet in the first direction along the longitudinal axis. The first retaining element and the second retaining element are arranged offset at the predetermined distance along the longitudinal axis in the first direction, wherein a first retaining element, a second retaining element and a third retaining element are arranged on the base body, and the first retaining element, the second retaining element and the third retaining element are used to at least indirectly fix the base body, wherein the first retaining element and the second retaining element are arranged on the tubular base body so that the axis of the first retaining element, as viewed along the longitudinal axis, is positioned at most 0.5 times the predetermined distance away from the axis of the first high-pressure outlet in the first direction, and so that the axis of the second retaining element, as viewed along the longitudinal axis, is positioned at most 0.5 times the predetermined distance away from the axis of the fourth high-pressure outlet in the opposite direction to the first direction.

[0006] Furthermore, an injection system is proposed, in particular a fuel injection system for a mixture-compression, externally ignited internal combustion engine, which has a fluid distributor according to the invention.

[0007] The injection device proposed can especially be configured as a fuel injection device, which is used for spraying fuel or spraying a mixture with at least one fuel. In addition, the injection device not only can be used for liquid fluid, but also can realize blowing into gaseous fluid, especially combustible gas if necessary.

[0008] Advantageously, the fluid distributor can be fastened to a suitable body via precisely three retaining elements. This can be achieved directly or indirectly, for example, via suitable retaining structures. If the injection system is designed, for example, as a fuel injection system for a motor vehicle, it is often necessary to fasten the injection system in the engine compartment, in particular to the cylinder head, where high loads occur. The term "holding element" is used herein to refer to a correspondingly load-bearing element of the fluid distributor, which at least indirectly fastens the fluid distributor to a suitable body, in particular, a cylinder head.

[0009] Thus, a distinction can be made here between (high-strength) retaining elements and at least one fixing element (if provided) that is only used for low loads, for example, to secure a cable harness. Retaining elements generally have to withstand very high loads. If the retaining elements are forged on a tubular base body, as is preferred, this generally requires considerable material usage.

[0010] However, it is also conceivable in principle to realize a soldered configuration, in which the holding element is connected to the tubular base body by soldering.

[0011] In a forged configuration, the material used to make the tubular base and, preferably, the retaining element and high-pressure outlet, which are forged together, is cut in sections, for example, from a round material. The material quantity is then generated with certain tolerances. The cut-section material is placed in a press, which can consist of a lower die and an upper die. The die halves predefine the profile for the forging process, which defines the forged shape of the base. Even at the lower tolerance limit, the profile must be able to be filled to 100% during forging. Because the base's profile varies locally and, for example, may have eccentricity or localized additional material requirements, locally varying amounts of material often occur, which are squeezed into the gaps between the die halves to accommodate the displaced material. This allows for a reliable forging profile to be achieved in one or more forging stages. It is advantageous to use high-quality materials, particularly high-quality steel. Stainless steel is preferably used for the base, high-pressure outlet, and retaining element, with forging being preferred to achieve a one-piece configuration.

[0012] During operation, the retaining element of the fluid distributor counteracts the reaction force of the valve generated by the hydraulic pressure, thereby advantageously preventing bending of the tubular base body. In particular, the support of the valve on the cylinder head generates a reaction force directed from the cylinder head toward the fluid distributor. This reduces movement of the valve relative to the high-pressure outlet. This in turn reduces the load on the seal between the valve and the high-pressure outlet, in particular preventing wear of sealing rings and the like. Furthermore, good support of the fluid distributor on the cylinder head is essential, for example, to prevent overloading of the bolts securing the tubular base body of the fluid distributor to the cylinder head.

[0013] The proposed design makes it possible, in particular, to meet these requirements with four high-pressure outlets using only three retaining elements. The arrangement of the retaining elements on the tubular base is crucial. In particular, the arrangement of the retaining elements on the tubular base also influences the natural frequency of the fluid distributor, and the retaining elements and the associated fastening devices must securely hold the fluid distributor in place, for example, on a cylinder head, under vibration loads.

[0014] According to an advantageous configuration, the axis of the first high-pressure outlet, the axis of the second high-pressure outlet, the axis of the third high-pressure outlet, the axis of the fourth high-pressure outlet, the axis of the first retaining element, the axis of the second retaining element and the axis of the third retaining element are at least substantially oriented along a second direction perpendicular to the first direction.

[0015] According to an advantageous configuration, the third direction is perpendicular not only to the first direction but also to the second direction, so that not only the axis of the first retaining element but also the axis of the second retaining element are positioned relative to the longitudinal axis or along or opposite to the third direction when viewed along the third direction, and so that the axis of the first retaining element and the axis of the third retaining element are positioned relative to the longitudinal axis along and opposite to or opposite to and along the third direction, respectively.

[0016] The holding element is preferably arranged as close as possible to the longitudinal axis of the tubular basic body.

[0017] According to an advantageous configuration, the axis of the first retaining element, the axis of the second retaining element, and the axis of the third retaining element are positioned along the longitudinal axis so that deformations of the tubular base body during operation cause uniform, in particular at least approximately equal, maximum displacements of the first, second, third, and fourth high-pressure outlets along and against the second direction, respectively. This allows for further optimization. This makes it possible, in particular, to achieve comparable loads on the seals, in particular O-rings, on the various high-pressure outlets in order to prevent overloading of one of these seals. The positioning of the retaining elements can advantageously be determined by simulation based on given boundary conditions, in particular geometric parameters. An important parameter is the predetermined spacing, which is predetermined, for example, by the cylinder spacing in an internal combustion engine having four cylinders.

[0018] According to an advantageous configuration, the first retaining element and the second retaining element are arranged on the tubular base so that the axis of the first retaining element, as viewed along the longitudinal axis, is positioned at a distance from the axis of the first high-pressure outlet in the first direction by at most 0.4 times the predetermined distance, and / or so that the axis of the second retaining element, as viewed along the longitudinal axis, is positioned at a distance from the axis of the fourth high-pressure outlet in the opposite direction to the first direction by at most 0.4 times the predetermined distance.

[0019] According to an advantageous configuration, the first retaining element and the second retaining element are arranged on the tubular base so that the axis of the first retaining element, as viewed along the longitudinal axis, is positioned spaced apart from the axis of the first high-pressure outlet by at least 0.1 times the predetermined spacing in the first direction, and / or so that the axis of the second retaining element, as viewed along the longitudinal axis, is positioned spaced apart from the axis of the fourth high-pressure outlet by at least 0.1 times the predetermined spacing in the opposite direction to the first direction.

[0020] According to an advantageous configuration, the axis of the third retaining element is positioned at least 0.1 times the predetermined distance from the axis of the second high-pressure outlet in the first direction, as viewed along the longitudinal axis, and / or the axis of the third retaining element is positioned at most 0.9 times the predetermined distance from the axis of the second high-pressure outlet in the first direction, as viewed along the longitudinal axis, and / or the axis of the third retaining element is positioned at least 0.25 times the predetermined distance from the axis of the second high-pressure outlet in the first direction, and / or the axis of the third retaining element is positioned at most 0.75 times the predetermined distance from the axis of the second high-pressure outlet in the first direction, and / or the axis of the third retaining element is positioned at least approximately 0.5 times the predetermined distance from the axis of the second high-pressure outlet in the first direction, as viewed along the longitudinal axis.

[0021] This allows for a particularly advantageous arrangement of the retaining element.

[0022] According to an advantageous configuration, the first, second, and third retaining elements are formed together with the tubular base body by one or more stages of forging, and / or the first, second, third, and fourth high-pressure outlets are formed together with the tubular base body by one or more stages of forging. In this case, the one-piece configuration is achieved, in particular, by forging.

[0023] According to an advantageous embodiment, at least the tubular base body is made of corrosion-resistant stainless steel, in particular stainless steel with material numbers 1.4301, 1.4307, 1.4462 or 1.4362, and / or the tubular base body and at least the first, second, third and fourth high-pressure outlets and / or the first, second and third retaining elements are made of stainless steel, and / or exactly three retaining elements are provided on the tubular base body with the first, second and third retaining elements, said three retaining elements being used for at least indirect fastening, in particular to a cylinder head, and / or exactly four high-pressure outlets are provided on the tubular base body with the first, second, third and fourth high-pressure outlets, said four high-pressure outlets being used for direct valve attachment. This embodiment is particularly suitable for gasoline engines or for injecting gasoline and gasoline mixtures.

[0024] In a possible configuration, the high-pressure outlet is configured as a radial high-pressure outlet on a tubular base body. The tubular base body is preferably composed of corrosion-resistant stainless steel, in particular of stainless steel with material numbers 1.4301, 1.4307, 1.4462 or 1.4362. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In the following description, preferred embodiments of the present invention are explained in detail with reference to the accompanying drawings, in which corresponding elements are provided with identical reference numerals. The accompanying drawings show:

[0026] Figure 1 According to one exemplary embodiment of the present invention, a simplified schematic diagram shows an injection system designed as a fuel injection system, which has a fluid distributor designed as a fuel distribution strip.

[0027] Figure 2 A schematic diagram is briefly shown according to an embodiment of the present invention. Figure 1 A view of the fluid dispenser shown in FIG. 1 along the viewing direction indicated by X2, and

[0028] Figure 3 From the viewing direction indicated by X1, the configuration corresponding to a modification is Figure 1 The fluid dispenser shown in . DETAILED DESCRIPTION

[0029] With reference to the accompanying drawings, possible configurations of an injection system 100 and a fluid distributor 1 for injection system 100 are described. In particular, such a fluid distributor 1 can be designed as a fuel distribution strip 1 and used in a fuel injection system 100, in which a fluid is preferably distributed to a plurality of valves (injection valves) 101 to 104, in particular fuel injection valves 101 to 104. Fluid distributor 1 is preferably designed to provide a very high load capacity with respect to the pressure of the fluid stored within fluid distributor 1 and distributed, for example, to fuel injection valves 101 to 104. Fluid distributor 1 is preferably embodied as a forged fluid distributor 1, thereby enabling high load capacity with respect to the fluid pressure.

[0030] Therefore, here a fluid distributor 1 is considered, whose tubular main body 2 is forged. It is conceivable that the fluid distributor 1 also has at least one further component which is screwed to the main body 2 or connected, for example, by welding or soldering.

[0031] Figure 1 A schematic diagram shows an injection system 100 designed as a fuel injection system 100 according to an exemplary embodiment of the present invention, which has a fluid distributor 1 designed as a fuel distribution rail 1 . Figure 2 From Figure 1 The fluid distributor 1 is shown in the viewing direction marked with the reference symbol X2. For forging, the desired shape of the base body 2 can be predetermined in a complex manner. In this embodiment, the tubular base body 2 has a tubular part 3, which is also provided with a longitudinal hole 42 along the longitudinal axis 4 to form an inner chamber 41, as shown in FIG. Figure 3 In addition, the base body 2 has retaining elements 5A, 5B, 5C, which are forged as eccentrics. In this embodiment, the axes 7A, 7B, 7C of the retaining elements 5A, 5B, 5C are spaced apart from the longitudinal axis 4.

[0032] In this embodiment, high-pressure outlets 9A to 9D configured as cup-shaped parts 9A to 9D are also forged on the base body 2 for connecting fuel injection valves 101 to 104. In this embodiment, the axes 12A to 12D of the high-pressure outlets 9A to 9D intersect with the longitudinal axis 4, as shown in FIG. Figure 3 This is shown by the axis 12A.0 for the high pressure outlet 9A.

[0033] Furthermore, at least one connecting nipple can be additionally formed on the base body, for example by forging, which can be used, for example, for connecting a pressure sensor. Furthermore, an axial high-pressure inlet 17 is formed on the tubular part 3 .

[0034] To describe the configuration and mode of operation, directions X1, X2, and X3 can be determined relative to a right-handed coordinate system (a three-coordinate system). Direction X1 is oriented along the longitudinal axis 4. When the fluid distributor 1 is assembled, direction X2 points from the longitudinal axis 4 of the tubular base body 2 toward the cylinder head 18 of the internal combustion engine 19. In this embodiment, the axes 7A, 7B, and 7C of the retaining elements 5A, 5B, and 5C and the axes 12A to 12D of the high-pressure outlets 9A to 9D are parallel to one another and oriented along direction X2. Determining directions X1 and X2 then yields the orientation of direction X3, which is therefore parallel to the upper side 20 of the cylinder head 18 when the fluid distributor 1 is assembled. The fastening of the fluid distributor 1 to the cylinder head 18 is schematically illustrated by fastening elements (bolts) 30A, 30B, and 30C, each of which engages one of the retaining elements 5A, 5B, and 5C and is oriented along axes 7A, 7B, and 7C.

[0035] The internal combustion engine 19 has four cylinders 21A to 21D. Thus, a distance 24 is predetermined between the axis 12A of the high-pressure outlet 9A and the axis 12B of the high-pressure outlet 9B, or between the axis 12B of the high-pressure outlet 9B and the axis 12C of the high-pressure outlet 9C, or between the axis 12C of the high-pressure outlet 9C and the axis 12D of the high-pressure outlet 9D. This distance is the cylinder distance 24 in this exemplary embodiment.

[0036] In this embodiment, in the assembled state, the valves 101 to 104 are supported in the direction X2 on the cylinder head 18. In this embodiment, during operation, a reaction force is generated, in particular hydraulically, which acts on the valves 101 to 104 counter to the direction X2, resulting in an elastic deformation of the tubular base body 2 about the longitudinal axis 4.

[0037] In particular, displacements of the high-pressure outlets 9A to 9D in and against the direction X2 can occur, which load the corresponding sealing points of the valves 101 to 104 .

[0038] The three retaining elements 5A, 5B, 5C are arranged on the tubular base body 2 so that sufficient fixation can be achieved with only three retaining elements 5A, 5B, 5C without overloading the seal. In addition to the orientation of the axes 7A, 7B, 7C of the retaining elements 5A, 5B, 5C in the direction X2, the positioning along the longitudinal axis 4 of the tubular base body 2 is important.

[0039] In this embodiment, a first spacing 28 is created between axis 12A of high-pressure outlet 9A and axis 7A of retaining element 5A, as viewed along longitudinal axis 4. Correspondingly, a second spacing 29 is created between axis 12D of high-pressure outlet 9D and axis 7B of retaining element 5B. In a modified embodiment, it is also possible for at least one of spacings 28, 29 to at least substantially disappear, so that, as viewed along longitudinal axis 4, axis 7A lies at least substantially on axis 12A and / or axis 7B lies at least substantially on axis 12D.

[0040] However, in this embodiment, first spacing 28 and second spacing 29 are predetermined to be greater than zero. In this case, axis 7A of retaining element 5A always lies in the X1 direction, as viewed from axis 12A of high-pressure outlet 9A, while axis 7B of retaining element 5B always lies opposite the X1 direction, as viewed from axis 12D of high-pressure outlet 9D. First spacing 28 is at most 0.5 times the predetermined spacing (cylinder spacing) 24. Furthermore, second spacing 29 is also at most 0.5 times the predetermined spacing 24. First spacing 28 and second spacing 29 do not need to be selected to be the same size. Preferably, first spacing 28 and / or second spacing 29 are each predetermined to have a positive value, in particular, each being predetermined to be at least 0.1 times the predetermined spacing 24. Furthermore, first spacing 28 and / or second spacing 29 are each preferably predetermined to have a value that is at most 0.4 times the predetermined spacing 24.

[0041] Further parameters for the possible arrangement of retaining elements 5A, 5B are provided along direction X3. Retaining elements 5A, 5B or axes 7A, 7B are preferably arranged on the same side of longitudinal axis 4 with respect to direction X3. Furthermore, retaining element 5C or axis 7C is preferably arranged on the other side of longitudinal axis 4 with respect to direction X3, so that retaining elements 5A, 5B, on the one hand, and retaining element 5C, on the other hand, are arranged on different sides of longitudinal axis 4. In a modified embodiment, it is advantageous in any case for two of retaining elements 5A to 5C to be arranged on one side of longitudinal axis 4, while another retaining element is arranged on the other side of longitudinal axis 4 with respect to direction X3. Furthermore, the spacings 35, 36, 37 between axis 7A and longitudinal axis 4, axis 7B and longitudinal axis 4, or axis 7C and longitudinal axis 4 are preferably minimized with respect to at least one required wall thickness, in particular the wall thickness of tubular base body 2. However, a different spacing 37 than retaining elements 5A, 5B, in particular a spacing greater than the at least required spacing, can also be specified for retaining element 5C. It is also conceivable to predetermine different, not necessarily minimum, distances 35 , 36 for the retaining elements 5A, 5B.

[0042] In this exemplary embodiment, axis 7C of third retaining element 5C is arranged at least approximately centrally between axis 12B of high-pressure outlet 9B and axis 12C of high-pressure outlet 9C, as viewed along longitudinal axis 4. In other words, it is positioned at a distance from axis 12B of high-pressure outlet 9B in first direction X1 by at least approximately 0.5 times a predetermined distance 24. A distance 31 between axis 12B of high-pressure outlet 9B and axis 7C of third retaining element 5C, as viewed along longitudinal axis 4 or in direction X1, is then at least approximately equal to 0.5 times the predetermined distance 24.

[0043] However, the third retaining element 5C may also be positioned elsewhere between the axis 12B of the high-pressure outlet 9B and the axis 12C of the high-pressure outlet 9C. This arrangement can be determined, for example, by considering additional boundary conditions. For example, the available installation space in the engine compartment of the internal combustion engine may predetermine relevant limitations. Advantageously, the axis 7C of the third retaining element 5C is positioned at least 0.1 times the predetermined spacing 24 from the axis 12B of the high-pressure outlet 9B in the first direction X1, and / or the axis 7C of the third retaining element 5C is positioned at most 0.9 times the predetermined spacing 24 from the axis 12B of the second high-pressure outlet 9B in the first direction X1 (and thus at least 0.1 times the predetermined spacing 24 from the axis 12C of the high-pressure outlet 9C opposite the first direction X1). It is further preferred that this arrangement be as central as possible. It is therefore particularly advantageous if the axis 7C of the retaining element 5C is positioned at a distance from the axis 12B of the high-pressure outlet 9B in the first direction X1 by at least 0.25 times the predetermined spacing 24 and / or if the axis 7C of the retaining element 5C is positioned at a distance from the axis 12B of the high-pressure outlet 9B in the first direction X1 by at most 0.75 times the predetermined spacing 24 (and therefore at least 0.25 times the predetermined spacing 24 in the opposite direction X1 to the axis 12C of the high-pressure outlet 9C).

[0044] The axes 7A, 7B, 7C of the retaining elements 5A, 5B, 5C are preferably positioned along the longitudinal axis 4 so that deformations of the tubular base body 2 during operation result in uniform, in particular at least approximately equal, maximum displacements of the high-pressure outlets 9A to 9D in and against the direction X2. This results in comparable loads on the sealing points of the valves 101 to 104. In contrast to a configuration without such equalization, the equalized loads are then smaller than the maximum individual loads.

[0045] However, the configuration selected in a specific individual case can also be determined with reference to other boundary conditions. Therefore, it is also particularly advantageous to positively predetermine the spacings 28, 29 in order to avoid a mass accumulation along the longitudinal axis 4, which has a favorable effect on the material usage required during forging. Furthermore, the configuration of the tubular base body 2 does not necessarily have to be symmetrical. For example, one of the spacings 28, 29 can also be 0.3 times the predetermined spacing 24 and the other 0.2 times the predetermined spacing 24. In this way, for example, it is possible to compensate for eccentrically arranged high-pressure outlets 9A to 9D, which are therefore arranged with their axes 12A to 12D offset by an axis offset (radial cup offset) 40 relative to the longitudinal axis 4 with respect to the direction X3, as in Figure 3 As shown in the example.

[0046] If such a positive, ie not equal to zero, axis offset 40 is predefined, as in Figure 3 As shown in , it is then oriented with respect to the direction X3 toward the side of the longitudinal axis 4 on which two of the three retaining elements 5A to 5C are located. Figure 1 and 2 Starting from the arrangement of the holding elements 5A to 5C shown in FIG, for the modified configuration shown here with a positive axis offset 40, the axis offset 40 is therefore oriented opposite to the direction X3 when viewed from the longitudinal axis 4. Figure 3 The central axis 12A with no axis offset 40 is denoted by 12A.0, and the axis 12A corresponding to a positive axis offset 40 is denoted by 12A.1.

[0047] The longitudinal axis 4 and / or the axes 7A to 7C of the retaining elements 5A to 5C and / or the axes 12A to 12D of the high-pressure outlets 9A to 9D can in particular be defined as bore axes of suitable bores.

[0048] Due to the smaller number of holding elements 5A, 5B, 5C than in conventional designs, namely only three holding elements 5A, 5B, 5C in the case of four cylinders 21A to 21D, the fluid distributor 1 requires less installation space and can be designed to be lighter.

[0049] The reduced material usage can lead to a significant reduction in manufacturing costs. On the one hand, the amount of rod material required can be reduced. On the other hand, especially in forged embodiments, the process energy used to heat the rod to the forging temperature can be saved.

[0050] The invention is not limited to the described exemplary embodiments.

Claims

1. A fluid distributor (1) for a spraying device (100), comprising a tubular base body (2), wherein: A first high-pressure outlet (9A), a second high-pressure outlet (9B), a third high-pressure outlet (9C) and a fourth high-pressure outlet are provided on the base body (2), wherein the second high-pressure outlet (9B) is arranged offset relative to the first high-pressure outlet (9A) in a first direction (X1) along the longitudinal axis (4) of the tubular base body (2) at a predetermined distance (24), wherein the third high-pressure outlet (9C) is arranged offset relative to the second high-pressure outlet (9B) in the first direction (X1) along the longitudinal axis (4) at the predetermined distance (24), wherein the fourth high-pressure outlet (9D) is arranged offset relative to the third high-pressure outlet (9C) in the first direction (X1) along the longitudinal axis (4) at the predetermined distance (24), wherein a first retaining element (5A) is provided on the base body (2) , a second retaining element (5B) and a third retaining element (5C), the first retaining element, the second retaining element and the third retaining element being used to at least indirectly fix the base body (2), wherein the first retaining element (5A) and the second retaining element (5B) are arranged on the tubular base body (2) so that the axis (7A) of the first retaining element (5A) is positioned at most 0.5 times the predetermined distance (24) away from the axis (12A) of the first high-pressure outlet (9A) in the first direction (X1) when viewed along the longitudinal axis (4), and so that the axis (7B) of the second retaining element (5B) is positioned at most 0.5 times the predetermined distance (24) away from the axis (12D) of the fourth high-pressure outlet (9D) in the opposite direction (X1) when viewed along the longitudinal axis (4).

2. The fluid dispenser according to claim 1, characterized in that The axis (12A) of the first high-pressure outlet (9A), the axis (12B) of the second high-pressure outlet (9B), the axis (12C) of the third high-pressure outlet (9C), the axis (12D) of the fourth high-pressure outlet (9D), the axis (7A) of the first retaining element (5A), the axis (7B) of the second retaining element (5B) and the axis (7C) of the third retaining element (5C) are substantially oriented along a second direction (X2) perpendicular to the first direction (X1).

3. The fluid dispenser according to claim 2, characterized in that The third direction (X3) is perpendicular not only to the first direction (X1) but also to the second direction (X2), so that not only the axis (7A) of the first retaining element (5A) but also the axis (7B) of the second retaining element (5B) are positioned along the third direction (X3) with respect to the longitudinal axis (4) or along or opposite to the third direction (X3), and so that the axis (7A) of the first retaining element (5A) and the axis (7C) of the third retaining element (5C) are positioned along and opposite to or opposite to and along the third direction (X3) with respect to the longitudinal axis (4) when viewed along the third direction (X3).

4. The fluid dispenser according to claim 3, characterized in that The spacing between the axis (7A) of the first retaining element (5A) and the longitudinal axis (4) along the third direction (X3) is minimized with respect to at least one required wall thickness, and / or The spacing between the axis (7B) of the second retaining element (5B) and the longitudinal axis (4) along the third direction (X3) is minimized with respect to at least one required wall thickness, and / or The distance between the axis (7C) of the third retaining element (5C) and the longitudinal axis (4) along the third direction (X3) is minimized with respect to at least one required wall thickness.

5. The fluid dispenser according to any one of claims 2 to 4, characterized in that: The axis (7A) of the first retaining element (5A), the axis (7B) of the second retaining element (5B) and the axis (7C) of the third retaining element (5C) are positioned along the longitudinal axis (4) so ​​that deformation of the tubular base (2) during operation causes uniform maximum displacement of the first high-pressure outlet (9A), the second high-pressure outlet (9B), the third high-pressure outlet (9C) and the fourth high-pressure outlet (9D) respectively along and against the second direction (X2).

6. The fluid dispenser according to any one of claims 1 to 4, characterized in that: The first retaining element (5A) and the second retaining element (5B) are arranged on the tubular base (2) so that the axis (7A) of the first retaining element (5A) is positioned at a distance from the axis (12A) of the first high-pressure outlet (9A) at most 0.4 times the predetermined distance (24) in the first direction (X1) when viewed along the longitudinal axis (4), and / or the axis (7B) of the second retaining element (5B) is positioned at a distance from the axis (12D) of the fourth high-pressure outlet (9D) at most 0.4 times the predetermined distance when viewed along the longitudinal axis (4) in the opposite direction to the first direction (X1).

7. The fluid dispenser according to any one of claims 1 to 4, characterized in that: The first retaining element (5A) and the second retaining element (5B) are arranged on the tubular base (2) so that the axis (7A) of the first retaining element (5A) is positioned at least 0.1 times the predetermined distance (24) away from the axis (12A) of the first high-pressure outlet (9A) in the first direction (X1) when viewed along the longitudinal axis (4), and / or the axis (7B) of the second retaining element (5B) is positioned at least 0.1 times the predetermined distance (24) away from the axis (12D) of the fourth high-pressure outlet (9D) in the opposite direction (X1) when viewed along the longitudinal axis (4).

8. The fluid dispenser according to any one of claims 1 to 4, characterized in that: The axis (7C) of the third retaining element (5C) is positioned at a distance from the axis (12B) of the second high-pressure outlet (9B) in the first direction (X1) by at least 0.1 times the predetermined distance (24), as viewed along the longitudinal axis (4), and / or The axis (7C) of the third retaining element (5C) is positioned at a distance from the axis (12B) of the second high-pressure outlet (9B) in the first direction (X1) by at most 0.9 times the predetermined distance (24), as viewed along the longitudinal axis (4), and / or The axis (7C) of the third retaining element (5C) is positioned at a distance from the axis (12B) of the second high-pressure outlet (9B) in the first direction (X1) by at least 0.25 times the predetermined distance (24), as viewed along the longitudinal axis (4), and / or The axis (7C) of the third retaining element (5C) is positioned at a distance from the axis (12B) of the second high-pressure outlet (9B) in the first direction (X1) by at most 0.75 times the predetermined distance (24), as viewed along the longitudinal axis (4), and / or Viewed along the longitudinal axis (4), the axis (7C) of the third retaining element (5C) is positioned at a distance from the axis (12B) of the second high-pressure outlet (9B) in the first direction (X1) by at least 0.5 times the predetermined distance (24).

9. The fluid dispenser according to any one of claims 1 to 4, characterized in that: The first holding element (5A), the second holding element (5B) and the third holding element (5C) are processed with the tubular base body (2) by one-stage or multi-stage forging, and / or The first high-pressure outlet (9A), the second high-pressure outlet (9B), the third high-pressure outlet (9C) and the fourth high-pressure outlet (9D) and the tubular base (2) are processed by one-stage or multi-stage forging.

10. The fluid dispenser according to any one of claims 1 to 4, characterized in that: At least the tubular base (2) is made of corrosion-resistant stainless steel, and / or The tubular base (2) and at least the first high-pressure outlet (9A), the second high-pressure outlet (9B), the third high-pressure outlet (9C) and the fourth high-pressure outlet (9D) and / or the first retaining element (5A), the second retaining element (5B) and the third retaining element (5C) are formed of stainless steel, and / or Exactly three retaining elements (5A, 5B, 5C) are provided on the tubular base body (2) by means of the first retaining element (5A), the second retaining element (5B) and the third retaining element (5C), the three retaining elements being used for at least indirect fixing, and / or Exactly four high-pressure outlets (9A, 9B, 9C, 9D) are provided on the tubular base (2) using the first high-pressure outlet (9A), the second high-pressure outlet (9B), the third high-pressure outlet (9C) and the fourth high-pressure outlet (9D), and the four high-pressure outlets are used for directly attaching valves (101, 102, 103, 104).

11. The fluid dispenser according to claim 1, wherein: The fluid distributor (1) is a fuel distributor rail for a fuel injection system of a mixture-compression, externally ignited internal combustion engine.

12. The fluid dispenser according to claim 1, wherein The base body is processed by single-stage or multi-stage forging.

13. The fluid dispenser according to claim 5, wherein: The axis (7A) of the first retaining element (5A), the axis (7B) of the second retaining element (5B) and the axis (7C) of the third retaining element (5C) are positioned along the longitudinal axis (4) so ​​that deformation of the tubular base body (2) during operation causes a uniform maximum displacement of the first high-pressure outlet (9A), the second high-pressure outlet (9B), the third high-pressure outlet (9C) and the fourth high-pressure outlet (9D) along and against the second direction (X2), respectively, of substantially the same magnitude.

14. The fluid dispenser according to claim 10, wherein: At least the tubular base body (2) is made of stainless steel with material number 1.4301, 1.4307, 1.4462 or 1.4362.

15. The fluid dispenser according to claim 10, wherein: The three retaining elements serve for fastening to the cylinder head (18).

16. A spraying device (100) comprising at least one fluid distributor (1) according to any one of claims 1 to 15.

17. The spraying device according to claim 16, characterized in that The injection system (100) is a fuel injection system for a mixture-compression, externally ignited internal combustion engine.

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