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.

公开(公告)号：US12037961B1

公开(公告)日：2024-07-16

申请号：US18352019

申请日：2023-07-13

Applicant: Caterpillar Inc.

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

IPC: F02B3/00 ,  F02F3/26

CPC classification number: F02F3/26

Abstract: A piston for an internal combustion engine includes a piston skirt and a piston crown attached to the piston skirt and including a combustion face. The combustion face forms a piston rim and a combustion bowl. A bowl edge defines an intersection of the combustion bowl and the piston rim, and a reentrant surface defining a reentrancy angle extends between the bowl edge and a bowl outer wall. A ratio of a bowl depth dimension coincident with the piston center axis to a compression height dimension coincident with the piston center axis is from about 0.30 to about 0.35.