公开(公告)号：US11898488B2

公开(公告)日：2024-02-13

申请号：US17318543

申请日：2021-05-12

Applicant: Caterpillar Inc.

Inventor： Jonathan Kevin Tooker ,  Christopher L. Batta ,  Dylan S. Fawcett ,  Shaun David Fogle

IPC: F02B23/06 ,  F02F11/00 ,  F02F3/26

CPC classification number: F02B23/0696 ,  F02B23/0624 ,  F02F3/26 ,  F02F11/005

Abstract: A piston includes a swirl pocket that extends radially from the radially outer lip portion to a lower axial extremity spaced away from the radially outer lip portion a first axial distance. A convex arcuate surface extends downwardly and inwardly from the radially outer lip portion, a concave arcuate surface extends to the lower axial extremity from the convex arcuate surface, and a conical portion extends upwardly and inwardly from the concave arcuate surface to an apex that is spaced a second axial distance from the radially outer lip portion that is less than the first axial distance.

公开(公告)号：US11428189B1

公开(公告)日：2022-08-30

申请号：US17318675

申请日：2021-05-12

Applicant: Caterpillar Inc.

Inventor： Jonathan Kevin Tooker ,  Christopher L. Batta ,  Dylan S. Fawcett ,  Shaun David Fogle

IPC: F02F3/00 ,  F02F1/00 ,  F16J10/04 ,  F02F3/28

Abstract: An anti-polishing ring includes a ring body defining an axis of revolution, and a radial direction that is perpendicular to the axis of revolution, and a circumferential direction about the axis of revolution. The ring body includes an outer circumferential surface, a bottom surface, a top surface, and an inner circumferential surface. The inner circumferential surface defines an inner diameter, the ring body defines a radial thickness measured from the inner circumferential surface to the outer circumferential surface, and a ratio of the radial thickness to the inner diameter ranges from 0.015 to 0.020.

公开(公告)号：US20220364498A1

公开(公告)日：2022-11-17

申请号：US17318543

申请日：2021-05-12

Applicant: Caterpillar Inc.

Inventor： Jonathan Kevin Tooker ,  Christopher L. Batta ,  Dylan S. Fawcett ,  Shaun David Fogle

IPC: F02B23/06 ,  F02F3/26 ,  F02F11/00

Abstract: A piston includes a swirl pocket that extends radially from the radially outer lip portion to a lower axial extremity spaced away from the radially outer lip portion a first axial distance. A convex arcuate surface extends downwardly and inwardly from the radially outer lip portion, a concave arcuate surface extends to the lower axial extremity from the convex arcuate surface, and a conical portion extends upwardly and inwardly from the concave arcuate surface to an apex that is spaced a second axial distance from the radially outer lip portion that is less than the first axial distance.

公开(公告)号：US11047293B1

公开(公告)日：2021-06-29

申请号：US17034143

申请日：2020-09-28

Applicant: Caterpillar Inc.

Inventor： Eric Lee Schroeder ,  Jonathan Kevin Tooker ,  Adam Joseph Clute

IPC: F02B23/06 ,  F02F3/00

Abstract: Operating an internal combustion engine includes conveying fuel of spray plumes of directly injected fuel out of a swirl pocket in a combustion bowl in a piston, and impinging the fuel upon an anti-sooting ramp transitioning between a radially inner shelf surface of the combustion bowl and a radially outer squish surface of the piston. The shelf surface is spaced an axial distance (FA) from a plane defined by the squish surface that is from 1% to 2% of an outer diameter (OD) dimension of the piston. Impinging the fuel upon the anti-sooting ramp directs the fuel upwardly from the squish surface to limit wall-wetting in the combustion cylinder.