Holding device for fastening a fuel distributor to an internal combustion engine

Abstract

A holding device is used for fastening a fuel distributor to an internal combustion engine. A plurality of holding elements is provided, which are able to be fixed in place on the internal combustion engine via a fastener. A cable guide is provided in addition. The holding elements are connected to the cable guide. In addition, a system having such a holding device and a fuel distributor for conveying fuel are provided.

Claims

1. A holding device for fastening a fuel distributor to an internal combustion engine, comprising: at least one holding element which can be fixed in place on an internal combustion engine at least indirectly with the air of a fastener; and a cable guide, the at least one holding element being at least connected to the cable guide; wherein each of the at least one holding elements has a first half shell and a second half shell, wherein the first half shell and the second half shell are configured to connect to each other, and, configured to circumferentially enclose a tubular base element of a fuel distributor of the internal combustion engine when the first half shell and the second half shell are connected to each other; wherein the at least one holding element includes multiple holding elements, each of the holding elements having a first half shell and a second half shell, wherein the first half shell and the second half shell are configured to connect to each other, and, configured to circumferentially enclose the tubular base element of the fuel distributor of the internal combustion engine when the first half shell and the second half shell are connected to each other, and wherein the holding elements are situated on the cable guide at a distance from each other, and the holding elements are at least indirectly connected to the cable guide.

2. The holding device as recited in claim 1, wherein the cable guide has a housing including an interior space, the housing being configured so that electrical cables can be introduced into the interior space of the housing when the housing is open, and wherein the interior space of the housing is protected from the environment when the housing is closed.

3. The holding device as recited in claim 2, wherein the housing has an insertion rail having a U-shaped profile, and a cover, the cover being configured to be connected to the insertion rail.

4. The holding device as recited in claim 3, wherein a housing part is provided on the at least one holding element, the housing part including a holder-integrated guide profile part and a pivotable cover part.

5. The holding device as recited in claim 4, wherein the cover part is able to be closed by a snap-in connection with the guide profile part in a closed pivot position.

6. The holding device as recited in claim 5, wherein the cover part is connected to the guide profile part via at least one foil hinge.

7. The holding device as recited in claim 5, wherein at least one insertion rail is provided, one end of the insertion rail being fixed in place between the cover part and the guide profile part in the closed pivot position of the cover part of the housing part provided on the holding element.

8. A system for having a holding device, the holding device including: at least one holding element which can be fixed in place on an internal combustion engine at least indirectly with the air of a fastener; a cable guide, the at least one holding element being at least indirectly connected to the cable guide; and a component which is used for conveying a fluid; wherein each of the at least one holding elements has a first half shell and a second half shell, wherein the first half shell and the second half shell are configured to connect to each other, and, configured to circumferentially enclose a tubular base element of the component when the first half shell and the second half shell are connected to each other; wherein the at least one holding element includes multiple holding elements, each of the holding elements having a first half shell and a second half shell, wherein the first half shell and the second half shell are configured to connect to each other, and, configured to circumferentially enclose the tubular base element of the component when the first half shell and the second half shell are connected to each other, and wherein the holding elements are situated on the cable guide at a distance from each other, and the holding elements are at least indirectly connected to the cable guide.

9. The system as recited in claim 8, wherein at least one elastic rib is provided on a holding region of the first half shell, at least one elastic rib is provided on a holding region of the second half shell, and the at least one elastic rib provided on the holding region of the first half shell, the at least one elastic rib provided on the holding region of the first half shell and the at least one elastic rib provided on the holding region of the second half shell are configured to directly contact the tubular base element of the component.

10. The holding device as recited in claim 1, wherein each of the holding elements includes a bore for receiving a fastener therethrough, the fastener for connecting the cable guide and the fuel distributor to the internal combustion engine, and for connecting the first half shell and the second half shell together.

11. The holding device as recited in claim 1, wherein the tubular base element extends in a direction parallel to the cable guide.

12. The system as recited in claim 8, wherein each of the holding elements includes a bore for receiving a fastener therethrough, the fastener for connecting the first half shell and the second half shell to each other.

13. The system as recited in claim 8, wherein the component is a fuel distributor, and wherein each of the holding elements includes a bore for receiving a fastener therethrough, the fastener connecting the cable guide and the fuel distributor to an internal combustion engine, and connecting the first half shell and the second half shell to each other.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) Preferred exemplary embodiments of the present invention are described in greater detail below with reference to the figures, in which corresponding elements have been provided with matching reference numerals.

(2) FIG. 1 shows a system having a holding device and a fuel distributor, in a three-dimensional representation that corresponds to a first exemplary embodiment of the present invention.

(3) FIG. 2 shows the holding device of the system shown in FIG. 1 according to the first exemplary embodiment of the present invention, in a disassembled state prior to an assembly.

(4) FIG. 3 shows a system having holding device and a fuel distributor in a three-dimensional representation that corresponds to a second exemplary embodiment of the present invention.

(5) FIG. 4 shows an excerpted illustration of the holding device of the second exemplary embodiment shown in FIG. 3, in an open pivot position of a cover part.

(6) FIG. 5 shows an excerpted exploded view of the holding device of the second exemplary embodiment shown in FIG. 3, in a closed pivot position of a cover part.

DETAILED DESCRIPTION OF EXAMPLE EMBODIMENTS

(7) FIG. 1 shows a system 1 having a holding device 2 and a component 3 developed as fuel distributor 3, in a three-dimensional representation that corresponds to a first exemplary embodiment. In this exemplary embodiment, fuel distributor 3 is used for storing and distributing fuel to multiple fuel injectors, which are connected to fuel distributor 3 via cups 4, 5, 6 of fuel distributor 3. In this exemplary embodiment, fuel distributor 3 has a tubular base element 7. Holding device 2 is used in particular for fuel distributors 3 of this type. However, in one modified development component 3 may also be used for conveying other fluids. For example, component 3 may make it possible to conduct cooling water to be supplied to engines of hybrid vehicles.

(8) Cups 4 through 6 are suitably connected to tubular base element 7. Furthermore, a connection thread 8 and an end piece 9 are provided on tubular base element 7. For example, a fuel line, which links fuel distributor 3 to a high-pressure pump, can be connected to connection thread 8. Depending on the development and application case, end piece 9 may possibly also be used for accommodating a sensor, especially a pressure sensor, and/or for connecting a pressure-limitation valve. In this particular exemplary embodiment, tubular base element 7 extends along a longitudinal axis 10. Cups 4 through 6 are disposed on tubular base element 7 at a distance from each other along longitudinal axis 10.

(9) Holding device 2 includes holding elements 11, 12, 13 and a cable guide 14. Cable guide 14 has a housing 15, which includes an insertion rail 16 and a cover 17. Insertion rail 16 has a U-shaped profile. Cover 17 is placed on top of insertion rail 16 in the assembled state, as illustrated in FIG. 1. This connects cover 17 to insertion rail 16.

(10) Holding element 11 has a first half shell 18 and a second half shell 19. Holding element 12 accordingly has a first half shell 18A and a second half shell 19A. In addition, holding element 13 has a first half shell 18B and a second half shell 19B.

(11) Half shells 19, 19A, 19B are connected to insertion rail 16 of housing 15. A development in one piece, e.g., an injection-molded part, is possible, as well. Fastening bores 20, 21, 22 are provided on holding elements 11 through 13, which allow an attachment to the internal combustion engine. A fastener 23, developed as a screw 23, which extends through fastening bore 20 of holding element 11, is shown by way of example. Fastener 23 may be screwed into a suitable threaded bore of the internal combustion engine. This also connects half shells 18, 19 of holding element 11 to each other. Half shells 18, 19 of holding element 11 that enclose tubular base element 7 of fuel distributor 3 thereby fix tubular base element 7 in place on the internal combustion engine.

(12) Housing 15 of cable guide 14 has suitable openings 24, 25 (FIG. 2) for routing electrical cables into and out of housing 15. Further openings may be provided in addition, which are formed at suitable locations in housing 15.

(13) FIG. 2 shows holding device 2 of system 1 shown in FIG. 1, which corresponds to the first exemplary embodiment in the disassembled state prior to an assembly. Half shells 19, 19A, 19B are connected to insertion rail 16 of housing 15. Half shells 19, 19A, 19B are situated on housing 15 of cable guide 14, at a distance from each other. The positions of half shells 18, 18A, 18B in relation to insertion rail 16 are thereby specified as well. In the assembled state, holding elements 11 through 13 are then situated on cable guide 14 at a distance from each other, holding elements 11 through 13 being connected to cable guide 14. In this exemplary embodiment, a total of three fasteners, which are developed to correspond to fasteners 23, are required for screw-fitting holding device 2 to the cylinder head of the internal combustion engine, for example.

(14) In the assembled state, an interior space 30 of housing 15 is formed between the insertion rail having the U-shaped profile and cover 17. Housing 15 is designed in such a way that in an open state of housing 15, electrical cables can be introduced into interior space 30 of housing 15, in particular placed there, and in a closed state of housing 15, interior space 30 is protected from the environment. This ensures mechanical protection of the cables introduced into interior space 30, among other things, while defined positioning in cable guide 14 is achieved in addition. This makes it easier to install further attachment components on the internal combustion engine or in the vicinity of the internal combustion engine. In this exemplary embodiment cover 17 is able to be plugged into insertion rail 16. A snap-in connection is possible as well. Cover 17 thus is able to be connected to insertion rail 16 in an advantageous manner, the connection possibly being developed as a releasable connection. In a correspondingly modified development, however, other connections and/or designs of cover 17 are possible as well.

(15) FIG. 3 shows a system 1 having a holding device 2 and a fuel distributor 3, in an excerpted three-dimensional representation corresponding to a second exemplary embodiment. In this exemplary embodiment housing parts 31, 32, 33 are provided on holding elements 11, 12, 13. Housing part 31 includes a holder-integrated guide profile part 34 and a pivotable cover part 35. In addition, housing part 32 includes a holder-integrated guide profile part 34B and a pivotable cover part 35A. Housing part 33 furthermore includes a holder-integrated guide profile part 34B and a pivotable cover part 35B. Each holder-integrated guide profile part 34, 34A, 35B is rigidly connected to associated half shell 19, 19A, 19B, but a development in one piece, in particular by injection molding, is possible as well. Pivotable cover parts 35, 35A, 35B, on the other hand, are able to pivot in relation to assigned half shells 19, 19A, 19B.

(16) Housing parts 31, 32, 33 are shown in FIG. 3 in a closed pivot position of cover parts 35, 35A, 35B. In this closed pivot position, cover parts 35, 35A, 35B are closed by a snap-in connection with associated guide profile part 34, 34A, 34B.

(17) An insertion rail 40 is situated between housing parts 31, 32. One end 40A of insertion rail 40 is fixed in place between cover part 35 and guide profile part 34. Another end 40B of insertion rail 40 is fixed in place between cover part 35A and guide profile part 34A. Insertion rail 40 may have a U-shaped profile. The electric cables are then enclosed between insertion rail 40 and an outer side 41 of tubular base element 7. However, other designs of insertion rail 40 are possible as well.

(18) In addition, further insertion rails 42, 43, 44 are provided, which are installed in a corresponding manner.

(19) FIG. 4 shows an excerpted illustration of holding device 2, shown in FIG. 3, of the second exemplary embodiment in an open pivot position of cover part 35. In this instance, cover part 35 is connected to guide profile part 34 via foil hinges 45, 46, 47, 48. For example, cover part 35 and guide profile part 34 may be formed jointly with half shell 19 by an injection-molded part. When cover part 35 is closed, detents 49, 50, 51 of cover part 35 engage with assigned depressions 52, 53, 54. This forms the snap-in connection between cover part 35 and guide profile part 34 in the closed pivot position illustrated in FIG. 3. Foil hinges 45 to 48 ensure the relative positioning, which simplifies the assembly. A loss prevention for pivotable cover part 35 is thereby provided in addition.

(20) A metallic sleeve 55 may be inserted into half shell 19 in the region of fastening bore 20.

(21) FIG. 5 shows an excerpted explosive view of holding device 2, shown in FIG. 3, of the second exemplary embodiment in a closed pivot position of cover part 35. It is also possible to insert a metallic sleeve 56 into half shell 18 in the region of opening 20. The position of fastener 23 in relation to half shells 18, 19 is illustrated by an axis 57. In the assembled state, an elastic layer may be introduced into existing sleeves 55, 56 and an insulation of holding element 11 in relation to fastener 23 achieved in this manner, which enables vibration isolation, in particular. The transmission of structure-borne noise, among other things, is damped as a result.

(22) Half shell 18 has a holding region 60, in which elastic ribs 61, 62 are provided. Elastic ribs 61, 62, for example, may be partially placed in corresponding depressions of holding region 60 of half shell 18. Accordingly, half shell 19 has a holding region 63 where elastic ribs 64, 65 are provided, as illustrated in a corresponding manner with the aid of FIG. 2, as well. Elastic ribs 64, 65, for example, may be partially placed in corresponding depressions of holding region 63 of half shell 19.

(23) In this exemplary embodiment, a projection 66 is developed on half shell 18, which engages with a corresponding depression 67 of half shell 19 when the two half shells 18, 19 are joined. This improves the connection between half shells 18, 19 in the assembled state.

(24) In the assembled state, half shells 18, 19 enclose outer side 41 of tubular base element 7 by their holding regions 60, 63. The direct contact is established via elastic ribs 61, 62, 64, 65. Elastic ribs 61, 62, 64, 65 thus ensure a certain isolation, in particular a vibration isolation, so that structure-borne noise is damped.

(25) The development of holding elements 12, 13 corresponds to the development of holding element 11.

(26) Similar to FIG. 3, FIG. 5 illustrates the engagement of detents 49, 50, 51 with depressions 52, 53, 54.

(27) When adapted appropriately, component 3 may also be used for conveying other liquid or gaseous fluids. Holding device 2 then correspondingly ensures an attachment of component 3 to the internal combustion engine, in particular a cylinder head of the internal combustion engine.

(28) The present invention is not restricted to the exemplary embodiments described.