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公开(公告)号：US20250067199A1
公开(公告)日：2025-02-27
申请号：US18940402
申请日：2024-11-07
Applicant: Cummins Inc.
Inventor： Nathaniel P. Hassall , John Jerl Purcell, III , Stephen D. Cofer, JR. , David M. Barnes , Aaron S. Quinton , Reid M. Irish
Abstract: The present disclosure provides a lubrication system comprising: a pump having an inlet in fluid communication with a lubricant source and an outlet; a cooler having an inlet in fluid communication with the outlet of the pump and an outlet; a lubrication filter having an inlet in fluid communication with the outlet of the cooler and an outlet; a first delivery path in fluid communication with the outlet of the lubrication filter, the first delivery path being configured to deliver cooled, filtered lubricant to a bearing system of an engine; and a second delivery path in fluid communication with the outlet of the pump, the second delivery path being configured to deliver uncooled, unfiltered lubricant to piston cooling nozzles of the engine.
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公开(公告)号：US20250065863A1
公开(公告)日：2025-02-27
申请号：US18722749
申请日：2022-10-14
Applicant: Cummins Inc.
Inventor： Dat D. Le , Kenneth Follen , Jaroslaw Leonarski , Carlos Lana , David Langenderfer
Abstract: Powertrains of hybrid electric vehicles, control systems for controlling the powertrains, and methods for controlling the powertrains are disclosed. The powertrain includes an engine, a motor/generator, a battery and a DC bus. The control system is configured to: operate the motor/generator in a first mode when the battery is connected to the DC bus; operate the motor/generator in a second mode when the battery is disconnected from the DC bus, wherein the second mode is a voltage control mode in which the motor/generator controls a voltage of the DC bus; and adjust at least one parameter of the powertrain to assist the motor/generator in controlling the voltage of the DC bus in the second mode.
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3.发明授权公开(公告)号：US12237797B2
公开(公告)日：2025-02-25
申请号：US18013216
申请日：2021-06-30
Applicant: Cummins Inc.
Inventor： Jaroslaw Leonarski
IPC: H02P27/04 , H02K11/215 , H02K11/33 , H02K29/08 , H02P6/16
Abstract: A resolver excitation output stage amplifier. Disclosed embodiments comprise an amplifier stage and a current protection circuit. The amplifier stage includes one or more amplifier transistors coupled to first and second supply terminals, a timing control terminal and an excitation signal output terminal. The amplifier stage is configured to provide a resolver excitation signal having the excitation frequency at the excitation signal output terminal. The current protection circuit includes one or more protection transistors coupled to the amplifier stage and configured to turn off the one or more transistors of the amplifier stage when current through the one or more transistors of the amplifier stage is greater than a predetermined current value.
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公开(公告)号：US20250059928A1
公开(公告)日：2025-02-20
申请号：US18720876
申请日：2022-12-20
Applicant: Cummins Inc.
Inventor： Jisang Sun , Weiyang Lin , Krishnakanth Muraleedhara Kaimal , Kevin Martin Beam , Aiswarya Adusumilli , David Guillermo Gonzalez Medina
Abstract: The present disclosure relates to engines with multiple cylinder banks. Systems and methods are disclosed that relate to engine operations that balance the output from the cylinder banks to improve engine health and performance.
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公开(公告)号：US20250052219A1
公开(公告)日：2025-02-13
申请号：US18720790
申请日：2022-12-20
Applicant: Cummins Inc.
Inventor： Romaine O. Edwards , Jason R. Garcia , Steve W. Gillespie
Abstract: 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.
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Patent Agency Ranking
公开(公告)号：US12221913B2
公开(公告)日：2025-02-11
申请号：US18402682
申请日：2024-01-02
Applicant: Cummins Inc.
Inventor： Todd C. Bouws , Ankit Raghunath Lad , Joshua A. Lantz , Boopathi Singalandapuram Mahadevan , Ian W. McGiffen , Douglas A. Roxbury
Abstract: Systems and methods for removing soot in an aftertreatment system are disclosed. A method includes: receiving data regarding an exhaust gas flow rate of exhaust gas; receiving data regarding a selective catalytic reduction (SCR) inlet temperature; determining an adsorption amount of soot in the exhaust aftertreatment system based on the exhaust gas flow rate of the exhaust gas and the SCR inlet temperature; comparing the adsorption amount of soot to a predefined adsorption amount limit; in response to the adsorption amount of soot exceeding the predefined adsorption amount limit; initiating an exhaust cleaning event to remove at least some accumulated soot in the exhaust aftertreatment system; receiving exhaust gas data during the exhaust cleaning event; determining a desorption amount of soot based on the exhaust gas data; comparing the desorption amount of soot to a predefined desorption limit; and ceasing the exhaust cleaning event based on the comparison.
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公开(公告)号：US12218393B2
公开(公告)日：2025-02-04
申请号：US17539940
申请日：2021-12-01
Applicant: Cummins Inc.
Inventor： Darren B. Hickey , Adam C. Cecil
IPC: H01M8/04 , H01M8/04007 , H01M8/243 , H01M8/2475 , H01M8/12
Abstract: The present disclosure generally relates to a fuel cell product assembly comprising a foundational frame assembly comprising a frame rail, a hot box cover removably supported by the foundational frame assembly to define a hot box area, one or more fuel cell assemblies housed in the hot box area and configured to produce electricity, and plumbing configured to supply a fuel or an oxidant to the one or more fuel cell assemblies, wherein at least a portion of the plumbing routes through and is protected by a longitudinal section of the frame rail.
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公开(公告)号：US20250035018A1
公开(公告)日：2025-01-30
申请号：US18714088
申请日：2022-11-28
Applicant: Cummins Inc.
Inventor： Anthony J. Huth , Ryan E. Denton , David A. Fields , John Y. Howland , Michael T. Hughes , Corey W. Trobaugh
Abstract: A computing system is disposed remote from a vehicle and communicably coupled to the vehicle over a network. The computing system includes: a communication interface structured to communicably couple to the network; one or more processors; and a memory storing instructions that, when executed by the one or more processors, cause the one or more processors to: receive, via the communication interface and from a vehicle, vehicle operational data and vehicle metadata; determine a lubricant oxidation rate based on a statistical model; determine a lubricant drain interval based on the lubricant oxidation rate relative to a predefined lubricant oxidation limit; and, provide the lubricant drain interval to an output device. The lubricant may be a lubricant for the vehicle, such as oil.
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公开(公告)号：US12194558B2
公开(公告)日：2025-01-14
申请号：US18180205
申请日：2023-03-08
Applicant: Cummins Inc.
Inventor： Chen-Chun Kao , John K. Awad , Steven Valentin
Abstract: 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：US12191758B2
公开(公告)日：2025-01-07
申请号：US18026427
申请日：2021-09-08
Applicant: Cummins Inc.
Inventor： Akm Arafat , Moinul S. Haque , Bradford K. Palmer , Patrick Kaufman
IPC: H02P21/22 , B60L50/60 , H02M1/32 , H02M7/5387 , B60K6/40
Abstract: An inverter system is provided such that the system includes a direct-current (DC) voltage supply, an inverter, an electric machine such as a motor, and a controller coupled with the inverter. The inverter has four or more legs, each with two switches operating complementary to each other. The controller can determine which three of the four or more legs are selected to operate the inverter and uses a remaining one of the four or more legs to operate the inverter by activating/deactivating certain switches during null vector state.
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