公开(公告)号：US20240093659A1

公开(公告)日：2024-03-21

申请号：US18511375

申请日：2023-11-16

Applicant: Caterpillar Inc.

Inventor： Aaron S. Ness ,  Andrew J. Loetz ,  John R. Brubaker ,  Christopher L. Batta

IPC: F02F3/24

CPC classification number: F02F3/24

Abstract: A piston may have an annular body including a crown portion defining a longitudinal axis, a radial direction perpendicular to the longitudinal axis, a plane containing the longitudinal axis and the radial direction, and a contoured combustion bowl. In the plane containing the longitudinal axis and the radial direction, the crown portion includes a radially outer squish surface, and a swirl pocket having a reentrant surface that extends axially downwardly and radially outwardly from the squish surface defining a tangent that forms a reentrant angle with the squish surface that ranges from 53.0 degrees to 57.0 degrees.

公开(公告)号：US11840983B2

公开(公告)日：2023-12-12

申请号：US17677370

申请日：2022-02-22

Applicant: Caterpillar Inc.

Inventor： Aaron S. Ness ,  Andrew J. Loetz ,  John R. Brubaker ,  Christopher L. Batta

IPC: F02B23/00 ,  F02F3/24

CPC classification number: F02F3/24

Abstract: A piston may have an annular body including a crown portion defining a longitudinal axis, a radial direction perpendicular to the longitudinal axis, a plane containing the longitudinal axis and the radial direction, and a contoured combustion bowl. In the plane containing the longitudinal axis and the radial direction, the crown portion includes a radially outer squish surface, and a swirl pocket having a reentrant surface that extends axially downwardly and radially outwardly from the squish surface defining a tangent that forms a reentrant angle with the squish surface that ranges from 53.0 degrees to 57.0 degrees.

公开(公告)号：US12264636B2

公开(公告)日：2025-04-01

申请号：US18511375

申请日：2023-11-16

Applicant: Caterpillar Inc.

Inventor： Aaron S. Ness ,  Andrew J. Loetz ,  John R. Brubaker ,  Christopher L. Batta

IPC: F02B23/00 ,  F02F3/24

Abstract: A piston may have an annular body including a crown portion defining a longitudinal axis, a radial direction perpendicular to the longitudinal axis, a plane containing the longitudinal axis and the radial direction, and a contoured combustion bowl. In the plane containing the longitudinal axis and the radial direction, the crown portion includes a radially outer squish surface, and a swirl pocket having a reentrant surface that extends axially downwardly and radially outwardly from the squish surface defining a tangent that forms a reentrant angle with the squish surface that ranges from 53.0 degrees to 57.0 degrees.

公开(公告)号：US20230265810A1

公开(公告)日：2023-08-24

申请号：US17677370

申请日：2022-02-22

Applicant: Caterpillar Inc.

Inventor： Aaron S. Ness ,  Andrew J. Loetz ,  John R. Brubaker ,  Christopher L. Batta

IPC: F02F3/24

CPC classification number: F02F3/24

Abstract: A piston may have an annular body including a crown portion defining a longitudinal axis, a radial direction perpendicular to the longitudinal axis, a plane containing the longitudinal axis and the radial direction, and a contoured combustion bowl. In the plane containing the longitudinal axis and the radial direction, the crown portion includes a radially outer squish surface, and a swirl pocket having a reentrant surface that extends axially downwardly and radially outwardly from the squish surface defining a tangent that forms a reentrant angle with the squish surface that ranges from 53.0 degrees to 57.0 degrees.

公开(公告)号：US11536218B1

公开(公告)日：2022-12-27

申请号：US17501898

申请日：2021-10-14

Applicant: Caterpillar Inc.

Inventor： Christopher L. Batta ,  Aaron S. Ness ,  Zachary T. Jacobs

IPC: F02F1/00 ,  B24B33/02 ,  F16J10/04

Abstract: Systems and methods for forming a plurality of valleys on an inner circumferential surface of a cylinder liner for uniform oil film thickness are disclosed. In one aspect, an internal combustion engine includes a piston; and a cylinder liner surrounding the piston, wherein the cylinder liner has a plurality of valleys on an inner circumferential surface of the cylinder liner, and wherein the plurality of valleys are formed to a frequency of 7 to 14 valleys per millimeter (mm) having a depth of at least 1 micrometer (μm).