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US 10,961,965 B2Granted
Method of modifying a conventional direct injector and modified injector assembly
AssigneeNostrum Energy Pte. Ltd.
InventorsFrank S. Loscrudato, Osanan L. Barros Neto
Life of this patent
Estimating the term…
Abstract
The present disclosure relates to a method of modifying a conventional injector (e.g., a high pressure direct fuel injector) and to the modified injector resulting therefrom. The modified injector provides a fluid flow rate and/or fluid spray plume (i.e., pattern) which is different than the fluid flow rate and/or fluid spray plume (i.e., pattern) of the original conventional injector. In one embodiment, provided is a modified injector used in internal combustion engines for fuel delivery directly into the combustion chamber.
Claims32
A method of modifying at least one of a fluid flow rate and a fluid spray
- pattern of an existing high pressure injector, the existing high pressure injector having a proximal end and a distal end, the existing high pressure injector having at the proximal end an input configured to receive fluid and having at the distal end a nozzle configured to eject the fluid, the nozzle including at least one orifice, wherein the orifice is in fluid communication with the input
- via a valve, wherein the valve comprises a valve seat and a pintle ball, and wherein a bottom
- portion of the pintle ball is configured to seal against a top surface of the valve seat, the method comprising:
- removing material from the distal end of the existing high pressure injector, wherein the removal of the material removes at least the orifice of the nozzle and exposes a bottom surface of the valve seat, and wherein the removal of the material provides at the distal end of the existing high pressure injector a male interface;
- providing a mounting adapter having a proximal end and a distal end, the proximal end of the mounting adapter having a female interface configured to mate with the male interface, the mounting adapter having a fluid channel disposed between the proximal and distal ends of the mounting adapter, the fluid channel being in fluid communication with the input via the valve, and the mounting adapter having in the female interface a seat support surface configured to support the bottom surface of the valve seat via contact therewith, said mounting adapter having a cavity adjacent the distal end thereof, the cavity being in fluid communication with the fluid channel of the mounting adapter;
- attaching the mounting adapter to the distal end of the existing high pressure injector after removal of the material, wherein the mounting adapter is attached such that the male interface is disposed within the female interface and such that the seat support surface supports the bottom surface of the valve seat via contact therewith
- providing an orifice plate having a proximal end and a distal end, the orifice plate including at least one plate orifice, the plate orifice being disposed between the proximal and distal ends of the orifice plate;
- and attaching the orifice plate to the distal end of the mounting adapter, wherein the orifice plate is attached such that the at least one plate orifice is in fluid communication with the fluid channel of the mounting adapter,
- wherein, when the orifice plate is attached to the mounting adapter, the cavity of the mounting adapter is disposed between the at least one plate orifice and the fluid channel of the mounting adapter such that the at least one plate orifice is in fluid communication with the fluid channel of the mounting adapter via the cavity of the mounting adapter.
6 more elements
A high pressure injector, comprising:
- an input disposed at a proximal end of the injector, the input being configured to receive a fluid;
- a valve in fluid communication with the input, wherein the valve comprises a valve seat
- and a pintle ball, wherein the valve seat comprises a top surface and a bottom surface, and wherein a bottom portion of the pintle ball is configured to seal against the top surface of the valve seat;
- a mounting adapter having a proximal end and a distal end, the proximal end of the mounting adapter having a female interface that mates with a male interface located at the bottom surface of the valve seat, the mounting adapter having a fluid channel disposed between the proximal and distal ends of the mounting adapter, the fluid channel being in fluid communication with the input via the valve, and the mounting adapter having in the female interface a seat support surface configured to support the bottom surface of the valve seat via contact therewith, and
- an orifice plate having a proximal end and a distal end, the orifice plate comprising a plurality of plate orifices, the plate orifices being disposed between the proximal and distal ends of the orifice plate;
- wherein the orifice plate is attached to the distal end of the mounting adapter such that the plurality of plate orifices are in fluid communication with the fluid channel of the mounting adapter,
- wherein the mounting adapter has a cavity at the distal end thereof, the cavity being in fluid communication with the fluid channel of the mounting adapter,
- wherein the cavity of the mounting adapter is disposed between the plurality of plate orifices and the fluid channel of the mounting adapter, such that the plurality of plate orifices are in fluid communication with the fluid channel of the mounting adapter via the cavity of the mounting adapter, and
- wherein extension lines of the plurality of plate orifices converge to create a focal point where the fluid passing through the plurality of plate orifices impinges one another at the focal point.
6 more elements
Dependencies are inferred from the claim text.