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    Variable valve actuation apparatus, system, and method
    21.
    发明授权
    Variable valve actuation apparatus, system, and method 有权
    可变阀致动装置，系统和方法

    公开(公告)号：US09222375B2

    公开(公告)日：2015-12-29

    申请号：US14162161

    申请日：2014-01-23

    Applicant: Cummins Inc.

    Inventor： David M. Barnes ,  Adam C. Cecil

    IPC: F01L1/34 ,  F01L1/047 ,  F01L1/053 ,  F01L1/18 ,  F01L1/26 ,  F01L13/00 ,  F01L1/344 ,  F02D13/02 ,  F02M25/07

    CPC classification number: F01L1/047 ,  F01L1/053 ,  F01L1/18 ,  F01L1/26 ,  F01L1/267 ,  F01L1/34 ,  F01L13/0021 ,  F01L13/0026 ,  F01L2001/0473 ,  F01L2001/34489 ,  F02D13/0269 ,  F02D2013/0292 ,  F02M26/01 ,  Y02T10/142 ,  Y10T29/49293

    Abstract: A variable valve actuation system in one form includes a rocker coupled with a valve stem at one end and a cam follower at the other end. The rocker is operable to rotate about a fixed axis and the cam follower includes a set of lower rollers operable to follow one cam lobe and an upper roller operable to follow another cam lobe. A leaf spring can be used to couple the cam follower with the rocker. A cam shaft can have a nested configuration that includes an inner shaft, an intermediate tube, and an outer tube. Cam lobes can be fastened to the cam shaft by fastening through each of the inner shaft, intermediate tube, and outer tube. The cam lobes can be attached by at least two devices inserted from either side of the cam shaft and that are not inserted at least through the inner shaft.

    Abstract translation: 一种形式的可变气门致动系统包括在一端与阀杆连接的摇杆和另一端的凸轮从动件。 摇杆可操作以围绕固定轴线旋转，并且凸轮从动件包括一组可操作以跟随一个凸轮凸角的下辊和可操作以跟随另一凸轮凸角的上辊。 可以使用板簧将凸轮从动件与摇杆联接。 凸轮轴可以具有包括内轴，中间管和外管的嵌套构造。 凸轮凸起可以通过固定在内轴，中间管和外管中的每一个而紧固到凸轮轴。 凸轮凸角可以通过从凸轮轴的任一侧插入的至少两个装置来连接，并且至少不穿过内轴。

    DIESEL PISTON WITH SEMI-HEMISPHERICAL CROWN
    22.
    发明申请
    DIESEL PISTON WITH SEMI-HEMISPHERICAL CROWN 有权
    柴油活塞与半自动化

    公开(公告)号：US20150275820A1

    公开(公告)日：2015-10-01

    申请号：US14666489

    申请日：2015-03-24

    Applicant: Cummins Inc.

    Inventor： Jason W. Mackey ,  David M. Barnes

    IPC: F02F3/28 ,  F02F1/24 ,  F02M61/04 ,  F02F3/00 ,  F02M59/46 ,  F02M55/02

    CPC classification number: F02F3/003 ,  F02B3/06 ,  F02B23/0657 ,  F02B23/0672 ,  F02B23/0675 ,  F02F2003/0061 ,  F02M61/14 ,  Y02T10/125

    Abstract: A diesel engine includes a cylinder block having a cylinder cavity defined therein. A cylinder head is coupled to the cylinder block and includes a lower semi-hemispherical surface defined thereon that defines an upper boundary of a combustion chamber. The engine includes a piston slideably disposed within the cylinder cavity that includes a piston crown having an upper surface configured to define a first portion of a lower boundary of the combustion chamber. The upper surface of the piston crown includes an axi-symmetric semi-hemispherical shape configured to correspond to the lower semi-hemispherical surface of the cylinder head.

    Abstract translation: 柴油发动机包括其中限定有气缸腔的气缸体。 气缸盖联接到气缸体并且包括限定在燃烧室的上边界上的下半半球表面。 发动机包括可滑动地设置在气缸腔内的活塞，其包括活塞冠部，所述活塞冠部具有被配置为限定燃烧室的下边界的第一部分的上表面。 活塞冠的上表面包括被配置为对应于气缸盖的下半半球表面的轴对称半半球形状。

    CYLINDER HEAD FOR INTERNAL COMBUSTION ENGINE
    24.
    发明公开
    CYLINDER HEAD FOR INTERNAL COMBUSTION ENGINE 审中-公开

    公开(公告)号：US20240209810A1

    公开(公告)日：2024-06-27

    申请号：US17596931

    申请日：2021-05-17

    Applicant: Cummins Inc.

    Inventor： Robert Earl Hoye ,  Jeffrey D. Jones ,  Daniel J. Mohr ,  David M. Barnes ,  Timothy Shipp

    IPC: F02F1/38 ,  F02F1/40

    CPC classification number: F02F1/38 ,  F02F1/40

    Abstract: A cylinder head includes novel designs for undercuts, contours of the outer enclosure, coolant jackets, and other cavities within an outer enclosure of the cylinder head. The cylinder head design enables the reduction of weight of the head while maintaining structural integrity of the head, and improves control of temperatures in intake side and exhaust side zones of the heads to improve operational efficiency of the engine. A method is provided for additive manufacturing of the cylinder head including the disclosed designs.

    Enhanced idler shaft interface for improving structural integrity of flywheel housing
    28.
    发明授权
    Enhanced idler shaft interface for improving structural integrity of flywheel housing 有权

    公开(公告)号：US11162414B2

    公开(公告)日：2021-11-02

    申请号：US16961588

    申请日：2018-01-12

    Applicant: Cummins Inc.

    Inventor： David M. Barnes ,  Kevin C. Augustin, Sr.

    IPC: F02B67/04 ,  F01M11/00 ,  F01M11/02 ,  F01M13/00 ,  F02F11/00 ,  F16C3/02

    Abstract: An idler shaft (100) used in an engine (10) having a gear cover (16) and a cylinder block (18). The idler shaft (100) includes an integral body (114) having a cylindrical shape. The idler shaft (100) is compressed between the gear cover (16) and the cylinder block (18) when assembled together such that the integral body (114) of the idler shaft (100) provides a clamp load and axial sealing between the gear cover (16) and the cylinder block (18). The idler shaft (100) further includes a passage way (116) fluidly connected to at least one of: the cylinder block (18) and the gear cover (16) for accommodating transmission of a fluid for the engine (10).

    LOW HEAT TRANSFER PISTON VIA BINDER JET TECHNOLOGY
    30.
    发明申请
    LOW HEAT TRANSFER PISTON VIA BINDER JET TECHNOLOGY 审中-公开

    公开(公告)号：US20200325988A1

    公开(公告)日：2020-10-15

    申请号：US16839626

    申请日：2020-04-03

    Applicant: CUMMINS INC.

    Inventor： David M. Barnes

    IPC: F16J1/00 ,  B23P15/10

    Abstract: A piston for an internal combustion engine includes a skirt and a crown coupled to the skirt. The crown is produced in isolation from the skirt using an additive manufacturing process. The piston includes a first air gap between the crown and the skirt. According to an example embodiment, the crown includes a plurality of sections produced in isolation from the skirt. The crown may include a second air gap disposed between two of the plurality of sections.

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