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    Systems and methods to minimize emissions spikes when reactivating or deactivating a combustion cylinder
    51.
    发明授权
    Systems and methods to minimize emissions spikes when reactivating or deactivating a combustion cylinder 有权

    公开(公告)号：US11499490B1

    公开(公告)日：2022-11-15

    申请号：US17544568

    申请日：2021-12-07

    Applicant: Cummins Inc. ,  Tula Technology, Inc.

    Inventor： J. Steven Kolhouse ,  Avra Brahma

    IPC: F02D41/00 ,  F02D13/02 ,  F02D41/14 ,  F01L13/00

    Abstract: Systems and methods for mitigating exhaust gas emissions via cylinder deactivation are provided. A system includes a controller coupled to an internal combustion engine and an electric motive device. The controller includes a processor and a memory coupled to the processor. The memory stores instruction that, when executed by the processor, cause the controller to: command the internal combustion engine to operate in a cylinder deactivation mode whereby at least one cylinder of a plurality of cylinders of the internal combustion engine is deactivated; receive a power request exceeding a current power output from the internal combustion engine; command the electric motive device to provide a supplemental power output based on the received power request; and, subsequent to commanding the electric motive device to provide the supplemental power out, activate the at least one cylinder of the plurality of cylinders of the internal combustion engine.

    Systems and methods for controlling cylinder deactivation operation in electrified powertrains
    53.
    发明授权
    Systems and methods for controlling cylinder deactivation operation in electrified powertrains 有权

    公开(公告)号：US11378022B2

    公开(公告)日：2022-07-05

    申请号：US16983010

    申请日：2020-08-03

    Applicant: Cummins Inc.

    Inventor： Anant Puri ,  J. Steven Kolhouse ,  Apurva A. Chunodkar

    IPC: F02D17/02 ,  B60K6/24 ,  B60K6/26 ,  F02D41/14 ,  F02D41/24

    Abstract: At least some embodiments of the present disclosure are directed to systems and methods for controlling a cylinder deactivation (CDA) operation for an electrified powertrain, the electrified powertrain comprising an engine and an additional power source, the engine having a plurality of cylinders. The method includes the step of: operating the electrified powertrain in a CDA mode and deactivating one or more selected cylinders of the plurality of cylinders; receiving measurement data indicative of operating conditions of the electrified powertrain; analyzing the measurement data to determine whether a predetermined operating condition is met; and adjusting the CDA operation by adjusting the duration of the CDA operation or changing a number of deactivated cylinders.

    FUEL SYSTEM MANAGEMENT DURING CYLINDER DEACTIVATION OPERATION
    55.
    发明申请
    FUEL SYSTEM MANAGEMENT DURING CYLINDER DEACTIVATION OPERATION 有权

    公开(公告)号：US20220120233A1

    公开(公告)日：2022-04-21

    申请号：US17498003

    申请日：2021-10-11

    Applicant: Cummins Inc.

    Inventor： Ross A. Phillips ,  Donald J. Benson ,  J. Steven Kolhouse ,  Avra Brahma

    IPC: F02D41/38 ,  F02D41/00

    Abstract: A method for operating an engine fueling system to manage fuel in an accumulator supplying fuel to an engine including multiple cylinders comprising monitoring fuel load in the accumulator, determining that the engine is operating in a cylinder deactivation mode such as a skip-fire mode during which one or more fueling events to one or more of the cylinders is being skipped, and controlling a supply of fuel from a fuel pump to the accumulator during the cylinder deactivation mode operation. In embodiments, controlling the supply of fuel includes causing fuel to be supplied from the fuel pump to the accumulator if the monitored fuel load is less than or equal to a first fuel load, and causing fuel to be not supplied from the fuel pump to the accumulator if the monitored fuel load is greater than the first load value. Controlling the supply of fuel may comprise controlling the supply of fuel during each fueling event cycle of each deactivated cylinder.

    SYSTEM AND METHODS FOR COMBUSTION CONTROLS IN MULTI-CYLINDER OPPOSED PISTON ENGINES
    57.
    发明申请
    SYSTEM AND METHODS FOR COMBUSTION CONTROLS IN MULTI-CYLINDER OPPOSED PISTON ENGINES 有权

    公开(公告)号：US20210310433A1

    公开(公告)日：2021-10-07

    申请号：US16336747

    申请日：2017-09-25

    Applicant: Cummins Inc.

    Inventor： J. Steven Kolhouse ,  Edmund P. Hodzen

    IPC: F02D41/14 ,  F02D41/40 ,  F02D35/02

    Abstract: A multi-cylinder opposed piston engine (100) can include one or more sensors, such as oxygen or nox sensors (132, 134, 136, 138, 142), for each cylinder (103) of the multi-cylinder opposed piston engine (100). The sensors (132, 134, 136, 138, 142) are in communication with an engine control unit (102) that can receive measurements and other data from the sensors. In one example, each cylinder (103) includes one or more sensors (132, 134) located adjacent to exhaust ports (144) of each individual cylinder (103). In another example, each cylinder (103) includes one or more sensors (136, 138) located in an exhaust passageway (146) of each individual cylinder (103). In some examples, the multi-cylinder opposed piston engine (100) can include multiple crankshafts (114, 116). For example, the multi-cylinder opposed piston engine (100) can include two crankshafts (114, 116), where each crankshaft (114, 116) engages, either directly or indirectly, one of two opposed pistons (104, 106) of a cylinder (103). In one example, each crankshaft (114, 116) includes one or more sensors, such as a torque sensor (120, 122), a speed sensor (124, 126), or a noise, vibration, and harshness (NVH) sensor (150, 152).

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