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：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.

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：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.