Cummins Inc.

Cummins Filtration Inc.

Cummins-Scania Hpcr System, LLC

Romaine O Edwards

Edward Benjamin Manring

Brian M Watson

Manoj M Thete

Steve W Gillespie

Jason R Garcia

Tamas Rauznitz

Scott Allen Salsburey

Mike Yost

Eric A Cantrell

Melissa R Padgett

A method for hard machining at least one orifice into a heat-treated fuel system component can include mounting the component into a holding fixture. The at least one orifice can include a first orifice. The method can include determining a desired orifice size of the at least one orifice based on a desired flow rate. The method can include hard machining the first orifice into the component. The method can include forming a first portion of the first orifice. The method can include forming, at an end of the first portion, a second portion of the first orifice. A diameter of the second portion can be smaller than a diameter of the first portion. The method can include forming a corner between the first portion and the second portion. The corner can have an edge condition having a dimension of 50 microns or less.

Method and apparatus for hard machining orifices in fuel system and engine components

A system is provided for performing a cleaning process of a component of a vehicle. The system includes a first cleaning applicator configured to deliver a cleaning agent to a first surface of the component of the vehicle, a second cleaning applicator configured to deliver the cleaning agent to a second surface of the component of the vehicle, a third cleaning applicator configured to deliver the cleaning agent to a third surface of the component of the vehicle, and a control unit configured to instruct each of the first, second, and third cleaning applicators to project the cleaning agent onto the respective surface of the component for a corresponding predetermined period. The first, second, and third applicators are instructed to project the cleaning agent in a predetermined sequence.

Automated vehicle component cleaning system

A fuel injector including a flow balanced injector needle seal is provided. The fuel injector includes a needle in a fuel passage of the fuel injector body. The needle moves longitudinally in the fuel passage to selectively stop and start fuel injection from the fuel passage. The fuel injector includes a check valve assembly that maintains pressurized fuel in the fuel passage and permits fuel flow out of the fuel passage in response to a fuel injection event. The needle seal is provided between the check valve assembly and a sleeve that extends around the proximal end of the needle. The needle seal includes multiple inlet orifices for receiving a fuel flow into the needle seal that are positioned relative to one another so that net lateral forces on the needle are effectively offset from one another.

Fuel injector, needle seal, and fuel injector system

A method and system is provided for reducing surface roughness of a diesel engine component. The method and system may apply a voltage to a plasma electrolyte polishing cell. The plasma electrolyte polishing cell may include a diesel engine component and an aqueous electrolyte solution. The method and system may cause a plasma layer to form around a surface of the diesel engine component as a result of applying the voltage to the plasma electrolyte polishing cell. The method and system may terminate the voltage to the plasma electrolyte polishing cell. The method and system may apply a coating process to the diesel engine component.

Plasma electrolytic polished diesel engine components

A valve () comprises a barrel () having a central bore (), an inlet (), and an outlet (), and a spool () disposed for motion within the central bore, including a ball tip (), a metering edge (), and a bore (). The spool is moveable between a closed position, wherein the ball tip engages a seat () to prevent fluid flow through the inlet and the metering edge is disposed in a lower chamber () of the central bore to prevent the fluid flow through the outlet, and an opened position, wherein the tip is spaced apart from the seat to permit fluid flow through the inlet and the spool bore into an upper chamber () of the central bore to equalize pressure on the spool, and the metering edge is disposed in a flow path of the outlet to permit fluid flow through the outlet.

Two stage valve with conical seat for flow shut-off and spool knife edge for metering flow control

A flow-through fitting and filter assembly is provided including a fitting body with a cavity, and a filter coupled to fitting body and positioned within the cavity. The filter includes a filter support and a filter element mounted on the filter support. A first end portion of the filter support is of a generally cylindrical cup shape including an outer annular wall in close sliding relationship the inner wall forming a fitting cavity to provide a guiding function while passages in the first end portion provide relief of fluid from the end of the cavity. A second end portion of the filter support includes an outer annular surface having an outer annular diameter greater than the inner annular diameter of the inner annular surface of the fitting body to create an interference fit and a fluid seal.

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Greenwood, IN, United States of America

Romaine O Edwards