公开(公告)号：US20200173408A1

公开(公告)日：2020-06-04

申请号：US16209058

申请日：2018-12-04

Applicant: Caterpillar Inc.

Inventor： Hoisan Kim ,  Victor Iskander Yacoub ,  Sridhar Thangaswamy ,  Cory Brown ,  Robert Joseph Smith

IPC: F02M47/02 ,  F02M57/02

Abstract: A fuel injector includes an injector body, and a stack within the injector body, and having a nozzle supply passage therein. The stack includes a solenoid assembly having a solenoid housing piece with a fuel bore formed therein that includes a segment of the nozzle supply passage. The solenoid housing piece includes a solenoid housing material in a base state, and a solenoid housing material in a residual compressive stressed state, with the fuel bore being formed by the solenoid housing material in the residual compressive stressed state. Residual stresses may be imparted by ballizing, nitriding, carburizing, autofrettage, or still another technique.

公开(公告)号：US11105304B2

公开(公告)日：2021-08-31

申请号：US16209058

申请日：2018-12-04

Applicant: Caterpillar Inc.

Inventor： Hoisan Kim ,  Victor Iskander Yacoub ,  Sridhar Thangaswamy ,  Cory Brown ,  Robert Joseph Smith

IPC: F02M47/00 ,  F02M47/02 ,  F02M57/02 ,  F02M63/00 ,  F02M61/16

Abstract: A fuel injector includes an injector body, and a stack within the injector body, and having a nozzle supply passage therein. The stack includes a solenoid assembly having a solenoid housing piece with a fuel bore formed therein that includes a segment of the nozzle supply passage. The solenoid housing piece includes a solenoid housing material in a base state, and a solenoid housing material in a residual compressive stressed state, with the fuel bore being formed by the solenoid housing material in the residual compressive stressed state. Residual stresses may be imparted by ballizing, nitriding, carburizing, autofrettage, or still another technique.