The present disclosure relates to fuel delivery systems for internal combustion engines.
Internal combustion engines include fuel delivery systems that are configured to transport fuel from a storage container, such as a fuel tank, to the individual cylinders of the internal combustion engine.
A fuel delivery system for an engine includes a fuel rail cup, a fuel injector, and a retainer clip. The fuel rail cup extends along a longitudinal axis and defines an opening that extends radially outward from the longitudinal axis. The fuel injector has an upper end that is disposed within the opening such that the cup and fuel injector are aligned along the longitudinal axis. The retainer clip has a central body and at least one prong that protrudes upward from the central body. The central body engages the fuel injector and the at least one prong engages the fuel rail cup such that the clip inhibits axial movement of the fuel injector relative to the fuel rail cup along the longitudinal axis and such that the clip inhibits rotation of the fuel injector relative to the fuel rail cup about the longitudinal axis.
A fuel delivery system for an engine includes a fuel rail cup, a fuel injector, and a retainer clip. The fuel rail cup extends along a longitudinal axis, defines an opening that extends radially outward from the longitudinal axis, and has a ridge that protrudes radially outward from a lower end of the fuel rail cup. The ridge defines an exterior notch. The fuel injector has an upper end that is disposed within the opening such that the cup and fuel injector are aligned along the longitudinal axis. The retainer clip has a central body. The retainer clip also has first and second prongs that protrude upward from the central body. The central body is secured to the fuel injector such that axial movement of the clip and rotation of the clip relative to the fuel injector along and about the longitudinal axis, respectively, are inhibited. The first prong has a first J-hook that engages the ridge to inhibit axial movement of the clip relative to the fuel rail cup along the longitudinal axis. The second prong extends upward, into the notch, and engages the ridge within the notch to inhibit rotation of the clip relative to the fuel rail cup about the longitudinal axis.
A fuel delivery system for an engine includes a fuel rail cup, a fuel injector, and a retainer clip. The fuel rail cup extends along a longitudinal axis, defines an opening that extends radially outward from the longitudinal axis, has a ridge that protrudes radially outward from a lower end of the fuel rail cup, defines a notch between a top surface of the ridge and an overhanging surface, and has a flat surface that partially defines the notch and faces radially outward relative to the longitudinal axis. The fuel injector has an upper end that is disposed within the opening such that the cup and fuel injector are aligned along the longitudinal axis. The retainer clip has a central body and a prong that protrudes upward from the central body. The central body is secured to the fuel injector such that axial movement of the clip and rotation of the clip relative to the fuel injector along and about the longitudinal axis, respectively, are inhibited. The prong extends upward and engages the overhanging surface. The prong extends downward from the overhanging surface and engages the top surface of the ridge to inhibit axial movement of the clip relative to the fuel rail cup along the longitudinal axis. The prong also engages the flat surface to inhibit rotation of the clip relative to the fuel rail cup about the longitudinal axis.
Embodiments of the present disclosure are described herein. It is to be understood, however, that the disclosed embodiments are merely examples and other embodiments may take various and alternative forms. The figures are not necessarily to scale; some features could be exaggerated or minimized to show details of particular components. Therefore, specific structural and functional details disclosed herein are not to be interpreted as limiting, but merely as a representative basis for teaching one skilled in the art to variously employ the embodiments. As those of ordinary skill in the art will understand, various features illustrated and described with reference to any one of the figures may be combined with features illustrated in one or more other figures to produce embodiments that are not explicitly illustrated or described. The combinations of features illustrated provide representative embodiments for typical applications. Various combinations and modifications of the features consistent with the teachings of this disclosure, however, could be desired for particular applications or implementations.
Referring to
The retainer clip 16 has a central body 26 and at least one prong 28 that protrudes upward from the central body 26. The embodiment depicted in
The fuel injector 14 has one or more exterior surfaces 30. The central body 26 of the retainer clip 16 defines a slot 32. More specifically, the central body 26 may include a pair of plates 34 that define the slot 32. The retainer clip 16 engages the one or more exterior surfaces 30 of the fuel injector 14 along the slot 32 such that rotation of the retainer clip 16 relative to the fuel injector 14 about the longitudinal axis 18 is prevented or inhibited. More specifically, the one or more exterior surfaces 30 of the fuel injector 14 may comprise a pair of substantially parallel exterior surfaces 30. Substantially parallel may refer to any incremental value between exactly parallel and 15° from exactly parallel. More specifically, the slot 32 may be rectangular in shape, the pair of plates 34 that define the slot 32 may be substantially parallel to each other, and the pair of substantially parallel plates 34 of retainer clip 16 may engage the pair of substantially parallel exterior surfaces 30 along the rectangular slot 32 such that rotation of the retainer clip 16 relative to the fuel injector 14 about the longitudinal axis 18 is prevented or inhibited.
The fuel injector 14 has an upper ridge 36 and a lower ridge 38 that protrude radially outward from the fuel injector 14 relative to the longitudinal axis 18. The one or more exterior surfaces 30, or more specifically the pair of substantially parallel exterior surfaces 30, are disposed between the upper ridge 36 and the lower ridge 38. The central body 16, or more specifically the pair of plates 34 that define the slot 32, is disposed between or sandwiched between the upper ridge 36 and the lower ridge 38 such that axial movement of the retainer clip 16 relative to the fuel injector 14 along the longitudinal axis 18 is prevented or inhibited. Stated in other terms, when the retainer clip 16 is secured to the fuel injector 14, the upper ridge 36 overhangs the central body 16, or more specifically the pair of plates 34 that define the slot 32 overhang the central body 16, such that upward movement of the retainer clip 16 relative to the fuel injector 14 is prevented or inhibited and the central body 16, or more specifically the pair of plates 34, overhangs the lower ridge 38 such that downward movement of the retainer clip 16 relative to the fuel injector 14 is prevented or inhibited.
The fuel rail cup 12 has a ridge 40 that protrudes radially outward from a lower end of the fuel rail cup 12. The fuel rail cup 12 defines a first notch 42 between a top surface 44 of the ridge 40 and a first overhanging surface 46. A first of the prongs 28 extends upward and engages the first overhanging surface 46. The first of the prongs 28 then extends downward from the first overhanging surface 46 and engages the top surface 44 of the ridge 40 to prevent or inhibit axial movement of the retainer clip 16 relative to the fuel rail cup 12 along the longitudinal axis 18. The fuel rail cup 12 has a first flat surface 48 that partially defines the first notch 42 and faces radially outward relative to the longitudinal axis 18. The first of the prongs 28 engages the first flat surface 48 to prevent or inhibit rotation of the retainer clip 16 relative to the fuel rail cup 12 about the longitudinal axis 18.
The fuel rail cup 12 defines a second notch 50 between the top surface 44 of the ridge 40 and a second overhanging surface 52. A second of the prongs 28 extends upward and engages the second overhanging surface 52. The second of the prongs 28 then extends downward from the second overhanging surface 52 and engages the top surface 44 of the ridge 40 to further prevent or inhibit axial movement of the retainer clip 16 relative to the fuel rail cup 12 along the longitudinal axis 18. The fuel rail cup 12 has a second flat surface 54 that partially defines the second notch 50 and faces radially outward relative to the longitudinal axis 18. The second of the prongs 28 engages the second flat surface 54 to further prevent or inhibit rotation of the retainer clip 16 relative to the fuel rail cup 12 about the longitudinal axis 18. The first flat surface 48 and the second flat surface 54 may be oriented outward from the fuel rail cup at a substantially 180° angle relative to each other. Substantially 1800 may refer to any incremental value between exactly 180° and 15° from exactly 180°.
Referring to
The retainer clip 16′ includes at least one prong that protrudes upward from the central body 26. The embodiment depicted in
The ridge 40 of the fuel rail cup 12′ defines an exterior notch 64. A third of the prongs 66 extends upward into the notch 64 and engages the ridge 40 within the notch 64 such that rotation of the retainer clip 16′ relative to the fuel rail cup 12′ about the longitudinal axis 18 is inhibited. It should be understood that the designations of first, second, third, fourth etc. for prongs, J-hooks, plate, ridges, notches, surfaces, or any other component, state, or condition described herein may be rearranged in the claims so that they are in chronological order with respect to the claims.
The words used in the specification are words of description rather than limitation, and it is understood that various changes may be made without departing from the spirit and scope of the disclosure. As previously described, the features of various embodiments may be combined to form further embodiments that may not be explicitly described or illustrated. While various embodiments could have been described as providing advantages or being preferred over other embodiments or prior art implementations with respect to one or more desired characteristics, those of ordinary skill in the art recognize that one or more features or characteristics may be compromised to achieve desired overall system attributes, which depend on the specific application and implementation. As such, embodiments described as less desirable than other embodiments or prior art implementations with respect to one or more characteristics are not outside the scope of the disclosure and may be desirable for particular applications.
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10267280 | Pasquali et al. | Apr 2019 | B2 |
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Number | Date | Country |
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2010168965 | Aug 2010 | JP |
5126083 | Jan 2013 | JP |
2013050109 | Mar 2013 | JP |
Entry |
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JP20130501109A (Sugiura et al.) Mar. 14, 2013 (machine translation) [online] (retrieved on Sep. 17, 2020] retrieved from EPO website. (Year: 2013). |