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公开(公告)号：US20250146444A1
公开(公告)日：2025-05-08
申请号：US19013698
申请日：2025-01-08
Applicant: Cummins Inc.
Inventor： C. Larry Bruner , Phanindra V. Garimella , Geomy George , Timothy P. Lutz , J. Steven Kolhouse , Edmund P. Hodzen , Robert Charles Borregard , Mark A. Rosswurm , Axel Otto zur Loye
Abstract: Systems, methods and apparatus for controlling operation of dual fuel engines are disclosed that regulate the fuelling amounts provided by a first fuel and a second fuel during operation of the engine. The first fuel can be a liquid fuel and the second fuel can be a gaseous fuel. The fuelling amounts are controlled to improve operational outcomes of the duel fuel engine.
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公开(公告)号：US20240183290A1
公开(公告)日：2024-06-06
申请号：US18440939
申请日：2024-02-13
Applicant: Cummins Inc. , Tula Technology, Inc.
Inventor： Timothy R. Frazier , J. Steven Kolhouse , Steven J. Small , Louis Joseph Serrano
CPC classification number: F01L13/0005 , F01L9/10 , F02D13/0223 , F02D13/06 , F02D41/0087 , F01L2013/001
Abstract: Systems and methods to extend a life of a component of a cylinder deactivation system are provided. A method includes initiating, by a controller, a CDA mode for an engine; determining, by the controller, a first cycle count for a first oil control solenoid of the CDA system; determining, by the controller, a second cycle count for a second oil control solenoid of the CDA system; comparing, by the controller, the first cycle count and the second cycle count; and modifying, by the controller, operation of the CDA mode for the engine based on the comparison.
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公开(公告)号：US11933237B2
公开(公告)日：2024-03-19
申请号：US17843473
申请日：2022-06-17
Applicant: Cummins, Inc. , Tula Technology, Inc.
Inventor： J. Steven Kolhouse , David Langenderfer , David Schmidt , Vijay Srinivasan
CPC classification number: F02D41/029 , F02D41/0087 , F02D41/1448 , F02D41/1454 , F01N3/0233 , F01N3/0864 , F01N9/002 , F01N9/005 , F01N11/002 , F01N11/005 , F01N2430/02 , F01N2430/06 , F01N2430/08 , F01N2430/085 , F01N2430/10 , F01N2550/04 , F01N2560/025 , F01N2900/0418 , F01N2900/0421 , F01N2900/0422 , F01N2900/1606 , F01N2900/1611 , F01N2900/1806 , F02D2200/021 , F02D2200/701
Abstract: A system includes an exhaust aftertreatment system including a particulate filter and a controller. The controller is configured to: receive a particulate filter regeneration event trigger; receive information, the information comprising a temperature regarding the particulate filter; determine the temperature regarding the particulate filter is below a temperature threshold associated with a particulate filter regeneration event; and responsive to determining the temperature regarding the particulate filter is below the temperature threshold, command the engine to operate in a cylinder deactivation mode, whereby at least one cylinder of a plurality of cylinders of the engine is deactivated.
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公开(公告)号：US11920533B2
公开(公告)日：2024-03-05
申请号：US17927573
申请日：2020-05-27
Applicant: Cummins Inc. , Tula Technology, Inc.
Inventor： Jennifer Kay Light-Holets , J. Steven Kolhouse , Christopher R. Nelson , Anant Puri , Xiaobo Song , Avra Brahma
CPC classification number: F02D41/024 , F01N3/202 , F01N3/2026 , F01N3/2033 , F01N3/2066 , F02D41/0002 , F02D41/005 , F02D41/0087 , F02D41/38 , F02M27/04 , F02D2041/389 , F02D2200/0804 , F02D2200/50
Abstract: A system includes an aftertreatment system heater of an exhaust aftertreatment system coupled to an engine A controller coupled to the aftertreatment system heater is configured to determine a condition of an exhaust gas from an engine and compare the condition to a predefined threshold. If the condition of the exhaust gas does not meet the predefined threshold, the controller is configured to determine whether an engine operating condition is met for activating a cylinder deactivation operating mode for the engine. If the engine operating condition is met, the controller is configured to operate the engine in the cylinder deactivation operating mode by deactivating a cylinder of a plurality of cylinders. If the engine operating condition is not met, the controller is configured to activate the aftertreatment system heater to heat the exhaust gas.
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公开(公告)号：US20240026833A1
公开(公告)日：2024-01-25
申请号：US18376310
申请日：2023-10-03
Applicant: Cummins Inc. , Tula Technology, Inc.
Inventor： J. Steven Kolhouse , Ross A. Phillips
CPC classification number: F02D17/02 , F02D41/0087 , F02D2041/389
Abstract: A method of controlling a fixed cylinder deactivation (CDA) system of an engine system is provided. The method includes: deactivating, by a controller, a cylinder of the engine system to operate the engine system in a fixed CDA mode; determining, by the controller, a temperature of an injector tip nozzle associated with the cylinder; comparing, by the controller, the temperature of the injector tip nozzle to a threshold temperature; and in response to determining that the temperature of the injector tip nozzle is greater than the threshold temperature, activating, by the controller, the cylinder.
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Patent Agency Ranking
公开(公告)号：US11859567B2
公开(公告)日：2024-01-02
申请号：US17952070
申请日：2022-09-23
Applicant: CUMMINS INC. , TULA TECHNOLOGY, INC.
Inventor： J. Steven Kolhouse , Ross A. Phillips
CPC classification number: F02D17/02 , F02D41/0087 , F02D2041/389 , F02D2200/0606
Abstract: A method of controlling a skip-fire cylinder deactivation system of an engine system is provided. The method includes a controller deactivating a cylinder of the engine system to operate the engine system in a skip-fire mode. The method further includes determining a temperature of an injector tip nozzle associated with the cylinder and comparing the temperature of the injector tip nozzle to a threshold a temperature. In response to determining that the temperature of the injector tip nozzle is greater than the threshold temperature, the cylinder is activated by the controller.
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公开(公告)号：US11724594B2
公开(公告)日：2023-08-15
申请号：US16926174
申请日：2020-07-10
Applicant: Tula Technology, Inc. , Cummins Inc.
Inventor： J. Steven Kolhouse , Lisa A. Orth-Farrell , Steven E. Carlson , Aaron W. Beinborn
CPC classification number: B60K17/28 , B60K17/02 , B60N2/002 , F01N11/002 , F02D17/02 , F02D41/0215 , F02D41/0235 , F02D2200/0802 , F02D2200/60
Abstract: Engine controllers and control schemes that facilitate skip fire engine operation in conjunction with use power take-off devices are described. In one aspect, a skip fire mode is exited when the power take-off unit is engaged and the current torque request exceeds a torque threshold. In some embodiments, the exit is delayed when the temperature of an after treatment system is below a designated temperature threshold. In another aspect, the engine transitions to the skip fire mode when the power take-off unit disengages. In some embodiments, exiting is conditioned on the current torque request being less than a torque threshold. In some embodiments, the transition is made immediately, whereas in others the transition only occurs when the power take-off unit is not reengaged for a period of time or is further conditioned on determining that the power take-off unit is likely to remain disengaged for the period of time.
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公开(公告)号：US20230016806A1
公开(公告)日：2023-01-19
申请号：US17952070
申请日：2022-09-23
Applicant: CUMMINS INC. , TULA TECHNOLOGY, INC.
Inventor： J. Steven Kolhouse , Ross A. Phillips
Abstract: A method of controlling a skip-fire cylinder deactivation system of an engine system is provided. The method includes a controller deactivating a cylinder of the engine system to operate the engine system in a skip-fire mode. The method further includes determining a temperature of an injector tip nozzle associated with the cylinder and comparing the temperature of the injector tip nozzle to a threshold a temperature. In response to determining that the temperature of the injector tip nozzle is greater than the threshold temperature, the cylinder is activated by the controller.
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公开(公告)号：US11530659B2
公开(公告)日：2022-12-20
申请号：US17622349
申请日：2020-07-02
Applicant: CUMMINS INC. , TULA TECHNOLOGY, INC.
Inventor： J. Steven Kolhouse , Aaron William Beinborn , Lyle E. Kocher
Abstract: A system for controlling operations of an engine comprises a plurality of cylinders and a controller operatively coupled to each of the plurality of cylinders. The controller is configured to determine an operating condition of the engine, and in response to determining that the operating condition is suitable for activating less then all cylinders of the plurality of cylinders during a cycle of the engine, determine a first firing pattern, and a second firing pattern different from the first firing pattern for activating the plurality of cylinders of the engine. The controller is configured to activate a first set of cylinders of the plurality of cylinders based on the first firing pattern, and subsequent to activating the first set of cylinders, activate a second set of cylinders of the plurality of cylinders different from the first set of cylinders based on the second firing pattern.
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公开(公告)号：US20220364486A1
公开(公告)日：2022-11-17
申请号：US17870452
申请日：2022-07-21
Applicant: Cummins Inc. , Tula Technology, Inc.
Inventor： Timothy R. Frazier , J. Steven Kolhouse , Steven J. Small , Louis Joseph Serrano
Abstract: Systems and methods to extend a life of a component of a cylinder deactivation system are provided. A method includes generating, by a controller, an initial life factor for the component; initiating, by the controller, a CDA mode for an engine; determining, by the controller, an actual life factor for the component, the actual life factor determined by comparing a number of switching events of a cylinder in the CDA mode to a number of cycles of the cylinder in the CDA mode; comparing, by the controller, the actual life factor to the initial life factor; and modifying, by the controller based on the comparison, operation of the engine in the CDA mode to adjust the actual life factor.
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