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公开(公告)号：US11602798B2
公开(公告)日：2023-03-14
申请号：US15769990
申请日：2016-10-21
申请人： CUMMINS INC.
发明人： Chen-Chun Kao , John K. Awad , Steven Valentin
摘要： A method is provided comprising identifying an alignment point of a workpiece; positioning a first end of an electrode in the direction of the alignment point of the workpiece; applying a first voltage to the electrode wherein the applied first voltage generates a spark; rotating the electrode in a first direction; advancing the electrode toward the alignment point by a first distance wherein advancing the electrode and applying the first voltage creates a first orifice section; applying a second voltage to the electrode and modifying one or more operational parameters of the electrode; advancing the electrode toward the alignment point by a second distance wherein advancing the electrode and applying the second voltage causes formation of at least a second orifice section; wherein the first and second orifice sections cooperate to form an orifice comprising a first flow area and a second flow area.
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公开(公告)号：US20220010870A1
公开(公告)日：2022-01-13
申请号：US17293599
申请日：2019-02-12
申请人： Cummins Inc.
发明人： Steven Valentin , Ross A. Phillips , Romaine O. Edwards , Eric A. Benham , Marian Trocki , Richard E. Duncan , Neil Jeffries , Karthik Sethuraman
摘要： A tappet assembly (100) used in mechanical equipment includes a tappet body (108) having a cylindrical shape and including a lower carrier portion (152) and an upper shell portion (158) having a cavity (150) defined by an inner wall (160) of the upper shell portion (158) and a top surface (154) of the lower carrier portion (152). The lower carrier portion (152) and the upper shell portion (158) are integrally formed as a single-piece unit. A post (162) extends upwardly from the top surface (154) of the lower carrier portion (152) and is configured to reduce a peak contact pressure associated with the tappet body (108).
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公开(公告)号：US20230219154A1
公开(公告)日：2023-07-13
申请号：US18180205
申请日：2023-03-08
申请人： Cummins Inc.
发明人： Chen-Chun Kao , John K. Awad , Steven Valentin
CPC分类号： B23H7/20 , B23H1/02 , B23H7/265 , B23H9/14 , B23H9/16 , B23H9/00 , B23H2200/20 , G05B2219/45221
摘要： A method is provided comprising identifying an alignment point of a workpiece; positioning a first end of an electrode in the direction of the alignment point of the workpiece; applying a first voltage to the electrode wherein the applied first voltage generates a spark; rotating the electrode in a first direction; advancing the electrode toward the alignment point by a first distance wherein advancing the electrode and applying the first voltage creates a first orifice section; applying a second voltage to the electrode and modifying one or more operational parameters of the electrode; advancing the electrode toward the alignment point by a second distance wherein advancing the electrode and applying the second voltage causes formation of at least a second orifice section; wherein the first and second orifice sections cooperate to form an orifice comprising a first flow area and a second flow area.
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公开(公告)号：US11846261B2
公开(公告)日：2023-12-19
申请号：US17916261
申请日：2021-02-16
申请人： Cummins Inc.
CPC分类号： F02M55/008 , F02M29/06 , F02M61/162
摘要： Apparatuses and methods for fuel injection are disclosed. The apparatus includes an inner sac with one or more primary passages extending therefrom. The one or more primary passages inject fuel therethrough and comprising a first portion, a second portion, and a third portion, where the second portion is disposed between the first portion and the third portion and has a cross-sectional area smaller than that of both the first portion and the third portion. The apparatus also includes one or more secondary passages extending from an outer surface of the apparatus to fluidly couple with the second portion of the one or more primary passages. The one or more secondary passages inject air to form fuel-and-air mixture with the fuel injected from the one or more primary passages.
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