公开(公告)号：US20230265818A1

公开(公告)日：2023-08-24

申请号：US17958910

申请日：2022-10-03

Applicant: HARBIN ENGINEERING UNIVERSITY

Inventor： Jianhui ZHAO ,  Jingyan CHEN ,  Heng ZHANG ,  Shuo CHEN

IPC: F02M55/04 ,  F02M63/02 ,  F02M61/10

CPC classification number: F02M55/04 ,  F02M63/0275 ,  F02M61/10 ,  F02M2200/315 ,  F02M2200/40 ,  F02M2200/28

Abstract: The present disclosure provides a high-pressure common rail fuel injector capable of achieving highly stable injection based on the throttling damping-accommodating effect in the present disclosure, comprising a fuel injector housing, a fuel pipe connector, an accumulator chamber, a fuel chamber control valve, a pressure fluctuation absorption assembly, a control valve assembly and a nozzle assembly; the accumulator chamber is installed in the fuel injector housing, and the fuel pipe connector is installed above the accumulator chamber; the fuel chamber control valve, the pressure fluctuation absorption assembly and the control valve assembly are installed in the fuel injector housing, and the nozzle assembly is arranged below the control valve assembly; and the accumulator chamber is separated into a main accumulator chamber, an auxiliary accumulator chamber and a fuel-return accumulator chamber.

公开(公告)号：US20230287851A1

公开(公告)日：2023-09-14

申请号：US17958933

申请日：2022-10-03

Applicant: HARBIN ENGINEERING UNIVERSITY

Inventor： Jianhui ZHAO ,  Xiangdong LU ,  Heng ZHANG ,  Yu XU ,  Weilong LIU

IPC: F02M51/06

CPC classification number: F02M51/0621 ,  F02M51/0635

Abstract: The present invention provides a permanent magnet-electromagnet synergistic coupling-based high-speed solenoid valve with a high dynamic response and a low rebound, including a shell and an iron core. The iron core is installed in the shell, an axial center through hole is formed in a middle of the iron core, a spring limiting sleeve is installed in the axial center through hole, an armature and a reset spring cavity are sequentially formed below the iron core, an upper portion of a valve rod is located in the spring limiting sleeve, an upper disc permanent magnet, a lower disc permanent magnet and a spring washer are arranged in the spring limiting sleeve, and a giant magnetostrictor is installed between the upper disc permanent magnet and the lower disc permanent magnet. By means of the present invention, electromagnetic force generated during pickup of the armature can be effectively improved.