Filtration device for a common rail fuel injector
AssigneeCaterpillar Inc.
InventorsDaniel Richard IBRAHIM, Michael Edward PICKELL
Life of this patent
Estimating the term…
Abstract
A filtration device may include a securement section and a filter. The securement section may be configured to be threadably secured to and extend within an interior of a common rail fuel injector. The securement section may include a passage for fuel. The passage may extend in a direction along a central axis of the securement section. The filter may be configured to be positioned within the interior of the common rail fuel injector to filter the fuel flowing through the common rail fuel injector. The filter may include a plurality of holes that are fluidly connecting to the passage of the securement section. The diameter of the filter may be smaller than a diameter of the securement section.
Claims20
A filtration device, comprising:
- a securement section that is configured to be threadably secured to and extend within an interior of a common rail fuel injector,
- wherein the securement section includes a passage for fuel,
- wherein the passage extends in a direction along a central axis of the securement section;
- and
- a filter extending from the securement section and configured to be positioned within the interior of the common rail fuel injector to filter the fuel flowing through the common rail fuel injector,
- wherein the filter includes a plurality of holes that are fluidly connected to the passage of the securement section,
- wherein a diameter of the filter is smaller than a diameter of the securement section.
A fuel injector, comprising:
- an inlet portion comprising:
- an interior cylindrical surface having a first screw thread, and
- an interior bottom surface,
- wherein the interior cylindrical surface and the interior bottom surface together define a cavity having a first diameter;
- a securement section comprising:
- an exterior surface having a second screw thread to engage the first screw thread, and
- a passage extending along a central axis of the securement section;
- and
- a filter positioned within the cavity of the inlet portion of the fuel injector and extending between the first screw thread and the interior bottom surface, the filter comprising:
- a plurality of holes that are fluidly connected to the passage of the securement section,
- wherein the filter has a diameter that is less than a diameter of the cavity.
A fuel system, comprising:
- a common rail;
- and
- a plurality of fuel injectors configured to receive fuel from the common rail, a fuel injector of the plurality of fuel injectors comprising:
- an inlet portion having a cavity that includes a first screw thread;
- a securement section having:
- a second screw thread to engage the first screw thread, and
- a passage extending along a central axis of the securement section;
- and
- a filter positioned within the cavity of the inlet portion of the fuel injector, the filter having a plurality of holes that are fluidly connected to the passage of the securement section,
- wherein the inlet portion includes an interior surface forming the cavity, and the filter has a diameter that is less than a diameter of the cavity, such that a fuel path is formed between the filter and the interior surface.
Dependencies are inferred from the claim text.