公开(公告)号：US20240084770A1

公开(公告)日：2024-03-14

申请号：US18519527

申请日：2023-11-27

Applicant: Cummins Inc.

Inventor： Romaine O. Edwards ,  Jason R. Garcia ,  Steve W. Gillespie

IPC: F02M61/16 ,  B23B35/00 ,  F02M61/18

CPC classification number: F02M61/168 ,  B23B35/00 ,  F02M61/1806 ,  F02M2200/80

Abstract: 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.

公开(公告)号：US20230003183A1

公开(公告)日：2023-01-05

申请号：US17784435

申请日：2019-12-19

Applicant: Mustafa Utku UNAL ,  Cummins Inc.

Inventor： Romaine O. Edwards ,  Mustafa Utku Unal ,  Aleksandr E. Lesin ,  Chin-Pei Wang ,  Neil Jeffries ,  Jason R. Garcia

IPC: F02M59/10 ,  F16H53/06 ,  F16H57/04

Abstract: A tappet roller assembly in which a roller shoe has a roller bore shaped to receive and retain a roller. The roller is sized and configured to rotate within the roller bore. The roller shoe may have a lubricating passage extending from a peripheral surface of the roller shoe to the roller bore to lubricate the roller.

公开(公告)号：US09732715B2

公开(公告)日：2017-08-15

申请号：US15047142

申请日：2016-02-18

Applicant: CUMMINS INC.

Inventor： Romaine O. Edwards ,  Edward B. Manring ,  Brian M. Watson

IPC: F16K1/54 ,  F02M63/00 ,  F02M59/46 ,  F02M59/36

CPC classification number: F02M59/366 ,  F02M59/368 ,  F02M59/466 ,  F02M63/0017 ,  F02M63/0036 ,  F02M63/004 ,  F02M63/0056 ,  F02M63/0073 ,  F02M63/0078 ,  F02M63/008 ,  Y10T137/0363 ,  Y10T137/8671

Abstract: A valve (100) comprises a barrel (104) having a central bore (110), an inlet (112), and an outlet (114, 116), and a spool (120) disposed for motion within the central bore, including a ball tip (128), a metering edge (130), and a bore (132). The spool is moveable between a closed position, wherein the ball tip engages a seat (142) to prevent fluid flow through the inlet and the metering edge is disposed in a lower chamber (148) 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 (154) 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.