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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
CPC分类号： F01L13/0005 , F01L9/10 , F02D13/0223 , F02D13/06 , F02D41/0087 , F01L2013/001
摘要： 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
CPC分类号： 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
摘要： 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
发明人： Jennifer Kay Light-Holets , J. Steven Kolhouse , Christopher R. Nelson , Anant Puri , Xiaobo Song , Avra Brahma
CPC分类号： 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
摘要： 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
CPC分类号： F02D17/02 , F02D41/0087 , F02D2041/389
摘要： 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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公开(公告)号：US11859567B2
公开(公告)日：2024-01-02
申请号：US17952070
申请日：2022-09-23
CPC分类号： F02D17/02 , F02D41/0087 , F02D2041/389 , F02D2200/0606
摘要： 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
CPC分类号： B60K17/28 , B60K17/02 , B60N2/002 , F01N11/002 , F02D17/02 , F02D41/0215 , F02D41/0235 , F02D2200/0802 , F02D2200/60
摘要： 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
摘要： 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
摘要： 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
摘要： 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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公开(公告)号：US11459965B2
公开(公告)日：2022-10-04
申请号：US17186979
申请日：2021-02-26
发明人： Vijay Srinivasan , Louis J. Serrano , Xiaoping Cai , J. Steven Kolhouse , Avra Brahma , Adrian P. Dale
摘要： Managing firing fraction transitions of a variable displacement internal combustion engines by (a) avoiding transport delays in an Exhaust Gas Recirculation (EGR) feed by starting movement of an EGR valve position after a decision to transition to a new firing fraction has been made, but prior to the start of the transition and (b) adjusting the EGR valve as needed during the transition so as to maintain an EGR fraction within a predetermined range during the transition. By performing both (a) and (b), spikes of nitrous oxide (NOx) and/or hydrocarbon emissions are reduced or altogether eliminated during the transition.
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