Spark plug configurations for dedicated-EGR engines

    公开(公告)号:US11519348B2

    公开(公告)日:2022-12-06

    申请号:US16675600

    申请日:2019-11-06

    Applicant: Cummins Inc.

    Abstract: One embodiment is a system comprising an internal combustion engine having one or more non-dedicated cylinders and one or more dedicated EGR cylinders configured to provide EGR to the engine via an EGR loop, a first spark plug coupled to each of the one or more non-dedicated cylinders, and a second spark plug coupled to each of the one or more dedicated EGR cylinders, wherein the second spark plug has a physical or dimensional characteristic that is different from the first spark plug. In certain forms each of the non-dedicated cylinders has only one of a first type of spark plug and each of the dedicated EGR cylinders has only one of a second type of spark plug. One or more of the characteristics that may vary between the first and second types of spark plugs include spark gap, electrode diameter, heat range, and ion sensing capability.

    DELAYING CYLINDER REACTIVATION
    43.
    发明申请

    公开(公告)号:US20220282677A1

    公开(公告)日:2022-09-08

    申请号:US17632441

    申请日:2020-08-04

    Applicant: Cummins Inc.

    Abstract: A method for delaying cylinder reactivation in a vehicle includes identifying, by a controller, a request to exit a cylinder deactivation state. The controller determines if the request is due to a transient condition. If the request is due to the transient condition, the controller analyzes at least one of the transient condition and a condition of the vehicle. The controller determines a first adjustment to the vehicle based on analyzing at least one of the transient condition and the condition of the vehicle. The first adjustment is configured to mitigate the transient condition. The controller implements the first adjustment.

    CONNECTION ARRANGEMENT FOR A FLUID TRANSFER INTERFACE

    公开(公告)号:US20210180734A1

    公开(公告)日:2021-06-17

    申请号:US16711804

    申请日:2019-12-12

    Applicant: Cummins Inc.

    Abstract: A fluid transfer connector securely connects a port fitting of a fluid device to a fluid hose. The fluid transfer connector includes an attachment member attachable to the port fitting of the fluid storage device. The fluid transfer connector further includes a hose adapter including a housing with a seal that wipes and sealingly engages the port fitting when the hose adapter is engaged to the attachment member.

    APPARATUS AND SYSTEM FOR DUAL IGNITION SOURCES FOR A VEHICLE

    公开(公告)号:US20200309083A1

    公开(公告)日:2020-10-01

    申请号:US16902537

    申请日:2020-06-16

    Applicant: Cummins Inc.

    Abstract: Apparatuses, methods, and systems for igniting fuel for an internal combustion engine, an ignition system include a first ignition device associated with a pre-combustion chamber of a cylinder and a second ignition device associated with a main combustion chamber of the cylinder. An engine control unit is operably connected to both the engine and the ignition system to ignite fuel for the cylinder with the first ignition device independently of igniting fuel with the second ignition device. The engine control unit determines an occurrence of a combustion condition and in response thereto (i) ignites fuel for combustion with both the first and the second ignition devices or (ii) ignites fuel for combustion only with the second ignition device. The engine control unit determines a second combustion condition and in response thereto ignites fuel only with the first ignition device.

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