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US 12,467,427 B2Granted
Anti-rotation retaining mechanism for a high-pressure fuel injector in a fuel system
AssigneeCummins Inc.
InventorsPatrick M. Morrison, Jordan P. Steele, Michael A. Lucas, Derek G. Weiler
Life of this patent
Estimating the term…
Abstract
Apparatuses for immobilizing fuel injection apparatuses are disclosed. A coupling member couples a fuel injection apparatus with an injector body of an engine. The coupling member includes a top surface, a bottom surface, a side surface, and an opening extending from the top surface to the bottom surface. The opening receives the fuel injection apparatus. The coupling member also includes a protruding portion extending from the bottom surface or the side surface which comes into contact with the injector body to prevent rotational movement of the fuel injection apparatus.
Claims20
An apparatus comprising:
- a fuel injector including an injector body, the injector body including an injector body top surface, an opening extending downward from the injector body top surface at a central location of the injector body, and a recessed portion extending downward from the injector body top surface;
- a connector inserted into the opening of the injector body and configured to fluidly couple the injector body with a high pressure fuel line;
- and
- a coupling member including a top surface, a bottom surface, a side surface, and an opening extending from the top surface to the bottom surface, and a protruding portion extending outward from the side surface and downward from the bottom surface;
- wherein the coupling member is press-fit around the connector with the connector received in the opening with a tight fit such that friction between an inner surface of the opening and an outer surface of the connector contributes to keeping the coupling member attached to the connector and the protruding portion extending into the recessed portion of the injector body contacts a sidewall of the injector body to provide additional friction between the protruding portion and the sidewall contributing to keeping the coupling member attached to the connector.
2 more elements
An engine system comprising:
- a fuel injection apparatus;
- a fuel injector having an injector body,
- the injector body configured to be coupled with the fuel injection apparatus;
- and
- a coupling member for coupling the fuel injection apparatus with the injector body, comprising,
- a top surface, a bottom surface, a side surface, and an opening extending from the top surface to the bottom surface, the opening configured to receive the fuel injection apparatus, and
- a protruding portion extending laterally from the side surface of the coupling member,
- wherein the coupling member is press-fit around the fuel injection apparatus with the fuel injection apparatus received in the opening with a tight fit such that friction between an inner surface of the opening and an outer surface of the fuel injection apparatus contributes to keeping the coupling member attached to the fuel injection apparatus and the protruding portion extending into the recessed portion of the injector body contacts a sidewall of the injector body to provide additional friction between the protruding portion and the sidewall contributing to keeping the coupling member attached to the connector.
5 more elements
An engine system comprising:
- a fuel injection apparatus;
- a fuel injector having an injector body,
- the injector body configured to be coupled with the fuel injection apparatus;
- and
- a coupling member for coupling the fuel injection apparatus with the injector body, comprising,
- a top surface, a bottom surface, a side surface, and an opening extending from the top surface to the bottom surface, the opening configured to receive the fuel injection apparatus, and
- a protruding portion extending laterally from the side surface of the coupling member,
- wherein the coupling member is press-fit around the fuel injection apparatus with the fuel injection apparatus received in the opening with a tight fit such that friction between an inner surface of the opening and an outer surface of the fuel injection apparatus keeps the coupling member attached to the fuel injection apparatus and the protruding portion extending into the recessed portion of the injector body,
- wherein the coupling member is press-fit around the connector with the connector received in the opening with a tight fit such that friction between an inner surface of the opening and an outer surface of the connector contributes to keeping the coupling member attached to the connector and the protruding portion extending into the recessed portion of the injector body contacts a sidewall of the injector body to provide additional friction between the protruding portion and the sidewall contributing to keeping the coupling member attached to the connector.
6 more elements
Dependencies are inferred from the claim text.