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    Piston and engine system using same
    2.
    发明授权
    Piston and engine system using same 有权

    公开(公告)号：US12146452B1

    公开(公告)日：2024-11-19

    申请号：US18352020

    申请日：2023-07-13

    Applicant: Caterpillar Inc.

    Inventor： Aaron Ness ,  Andrew J. Loetz ,  Adam J. Clute ,  Sri Harsha Uddanda

    IPC: F02F3/26 ,  F02F3/00

    Abstract: A piston for an internal combustion engine includes a piston skirt and a piston crown attached to the piston skirt. The piston crown includes a combustion face forming a piston rim extending circumferentially around a piston center axis, and a combustion bowl. The combustion face further forms a bowl edge defining an intersection of the combustion bowl and the piston rim, and includes a reentrant surface extending between the bowl edge and a bowl outer wall. A ratio of a bowl max dimension to a bowl opening dimension is from about 1.10 to about 1.15.

    Engine piston having a notched top land
    5.
    发明授权
    Engine piston having a notched top land 有权

    公开(公告)号：US09822729B2

    公开(公告)日：2017-11-21

    申请号：US14929831

    申请日：2015-11-02

    Applicant: Caterpillar Inc.

    Inventor： Aaron Ness ,  John R. Brubaker

    IPC: F02F3/28 ,  F02F1/00 ,  F16C7/02

    CPC classification number: F02F3/28 ,  F02F1/004 ,  F16C7/023

    Abstract: A piston is disclosed. The piston may have a piston crown having a top surface. The piston may also have a first land disposed in the piston crown adjacent the top surface. The first land may have a side surface disposed generally orthogonal to the top surface. Further the piston may have a second land axially separated from the first land. In addition, the piston may have a groove disposed between the first land and the second land. The piston may also have a notch extending between the side surface and the top surface. The notch may have a generally concave shape and may extend circumferentially around the top surface.

    Combustion Engine Piston and Engine Using Same
    6.
    发明申请
    Combustion Engine Piston and Engine Using Same 有权
    燃烧发动机活塞和发动机使用相同

    公开(公告)号：US20150053167A1

    公开(公告)日：2015-02-26

    申请号：US14331374

    申请日：2014-07-15

    Applicant: Caterpillar Inc.

    Inventor： Robert Nacke ,  Stuart Niese ,  Aaron Ness ,  Fabio Menotti ,  Chris Hoops ,  Andrew Gaarder

    IPC: F02F3/26

    CPC classification number: F02F3/26 ,  F02B23/0636 ,  Y02T10/125

    Abstract: A piston for an internal combustion engine is disclosed. The piston includes an upper surface configured to at least partly face a cylinder head of the internal combustion engine. The upper surface includes a combustion bowl surface, and a squish face having an internal edge disposed a first distance from the longitudinal axis along a radial direction. The combustion bowl surface includes a planar surface extending radially outward from the longitudinal axis of the piston, a first concave surface disposed outside the planar surface in the radial direction, the first concave surface having a first radius of curvature, and a second concave surface disposed outside the first concave surface in the radial direction, the second concave surface having a second radius of curvature, the second radius of curvature being smaller than the first radius of curvature.

    Abstract translation: 公开了一种用于内燃机的活塞。 活塞包括构造成至少部分地面对内燃机的气缸盖的上表面。 上表面包括燃烧碗表面和具有沿着径向方向设置在距纵向轴线第一距离的内边缘的挤压面。 燃烧碗表面包括从活塞的纵向轴线径向向外延伸的平坦表面，在径向方向上设置在平坦表面外侧的第一凹面，第一凹面具有第一曲率半径，第二凹面设置 在第一凹面的径向外侧，第二凹面具有第二曲率半径，第二曲率半径小于第一曲率半径。

    Combustion engine piston and engine using same
    7.
    发明授权
    Combustion engine piston and engine using same 有权
    燃烧发动机活塞和发动机使用相同

    公开(公告)号：US09429101B2

    公开(公告)日：2016-08-30

    申请号：US14331374

    申请日：2014-07-15

    Applicant: Caterpillar Inc.

    Inventor： Robert Nacke ,  Stuart Niese ,  Aaron Ness ,  Fabio Menotti ,  Chris Hoops ,  Andrew Gaarder

    IPC: F02F3/26 ,  F02B23/06

    CPC classification number: F02F3/26 ,  F02B23/0636 ,  Y02T10/125

    Abstract: A piston for an internal combustion engine is disclosed. The piston includes an upper surface configured to at least partly face a cylinder head of the internal combustion engine. The upper surface includes a combustion bowl surface, and a squish face having an internal edge disposed a first distance from the longitudinal axis along a radial direction. The combustion bowl surface includes a planar surface extending radially outward from the longitudinal axis of the piston, a first concave surface disposed outside the planar surface in the radial direction, the first concave surface having a first radius of curvature, and a second concave surface disposed outside the first concave surface in the radial direction, the second concave surface having a second radius of curvature, the second radius of curvature being smaller than the first radius of curvature.

    Abstract translation: 公开了一种用于内燃机的活塞。 活塞包括构造成至少部分地面对内燃机的气缸盖的上表面。 上表面包括燃烧碗表面和具有沿着径向方向设置在距纵向轴线第一距离的内边缘的挤压面。 燃烧碗表面包括从活塞的纵向轴线径向向外延伸的平坦表面，在径向方向上设置在平坦表面外侧的第一凹面，第一凹面具有第一曲率半径，第二凹面设置 在第一凹面的径向外侧，第二凹面具有第二曲率半径，第二曲率半径小于第一曲率半径。

    Piston having combustion bowl and engine using same
    8.
    发明授权
    Piston having combustion bowl and engine using same 有权
    活塞具有燃烧碗和发动机使用相同

    公开(公告)号：US09228531B2

    公开(公告)日：2016-01-05

    申请号：US13892396

    申请日：2013-05-13

    Applicant: Caterpillar Inc.

    Inventor： Aaron Ness ,  Scott Coulier ,  Thomas Kammerdiener ,  Jonathan Kilkenny

    IPC: F02F3/00 ,  F02F3/24 ,  F02F3/26 ,  F02F3/28 ,  F02F3/22

    CPC classification number: F02F3/28 ,  F02B23/0624 ,  F02B23/0645 ,  F02B23/0651 ,  F02B23/0672 ,  F02F3/00 ,  F02F3/22 ,  F05C2201/021 ,  Y02T10/125

    Abstract: A piston for balancing combustion efficiency and smoke generation with NOx production includes a combustion face forming a combustion bowl having a compound curvature increased in sharpness in a radially outward direction. An outer bowl surface defines a large radius of curvature adjacent an inner bowl surface, and a medium radius of curvature adjacent a cylindrical wall surface. The inner bowl, outer bowl, and wall surfaces together contour the combustion bowl, such that a diameter of the combustion bowl is about 124 mm so as to establish a bowl to bore ratio of about 0.71 in a direct injection compression ignition engine with a compression ratio of about 15:1 to 17:1.

    Abstract translation: 用于利用NOx生成来平衡燃烧效率和烟雾产生的活塞包括形成具有在径向向外的方向上以锐度增加的复合曲率的燃烧碗的燃烧面。 外碗表面限定了与内碗碗表面相邻的大的曲率半径，以及邻近圆柱形壁表面的中等曲率半径。 内碗，外碗和壁表面一起轮廓燃烧碗，使得燃烧碗的直径为约124mm，以便在具有压缩的直喷式压燃式发动机中建立约0.71的碗孔比 比例为约15：1至17：1。

    PISTON HAVING COMBUSTION BOWL AND ENGINE USING SAME
    9.
    发明申请
    PISTON HAVING COMBUSTION BOWL AND ENGINE USING SAME 有权
    活塞式活塞和发动机使用相同

    公开(公告)号：US20140331961A1

    公开(公告)日：2014-11-13

    申请号：US13892396

    申请日：2013-05-13

    Applicant: Caterpillar Inc.

    Inventor： Aaron Ness ,  Scott Coulier ,  Thomas Kammerdiener ,  Jonathan Kilkenny

    IPC: F02F3/28

    CPC classification number: F02F3/28 ,  F02B23/0624 ,  F02B23/0645 ,  F02B23/0651 ,  F02B23/0672 ,  F02F3/00 ,  F02F3/22 ,  F05C2201/021 ,  Y02T10/125

    Abstract: A piston for balancing combustion efficiency and smoke generation with NOx production includes a combustion face forming a combustion bowl having a compound curvature increased in sharpness in a radially outward direction. An outer bowl surface defines a large radius of curvature adjacent an inner bowl surface, and a medium radius of curvature adjacent a cylindrical wall surface. The inner bowl, outer bowl, and wall surfaces together contour the combustion bowl, such that a diameter of the combustion bowl is about 124 mm so as to establish a bowl to bore ratio of about 0.71 in a direct injection compression ignition engine with a compression ratio of about 15:1 to 17:1.

    Abstract translation: 用于利用NOx生成来平衡燃烧效率和烟雾产生的活塞包括形成具有在径向向外的方向上以锐度增加的复合曲率的燃烧碗的燃烧面。 外碗表面限定了与内碗碗表面相邻的大的曲率半径，以及邻近圆柱形壁表面的中等曲率半径。 内碗，外碗和壁表面一起轮廓燃烧碗，使得燃烧碗的直径为约124mm，以便在具有压缩的直喷式压燃式发动机中建立约0.71的碗孔比 比例为约15：1至17：1。

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