公开(公告)号：JP2006046221A

公开(公告)日：2006-02-16

申请号：JP2004229799

申请日：2004-08-05

Applicant: Denso Corp ,  株式会社デンソー

Inventor： SEKIJIMA HITOSHI

IPC: F02M61/10 ,  F02M61/18

Abstract: PROBLEM TO BE SOLVED: To keep length of a sliding part long to prevent leak of fuel to other injection holes during an early stage of injection in a fuel injection valve for controlling injection rate during one fuel injection period.
SOLUTION: This valve is provided with a valve body 20 provided with a large diameter cylinder part and a round crown part projecting from a tip of the large diameter cylinder part, a first nozzle needle 70 reciprocatably stored in the valve body 20 and opening and closing a first injection hole 30 formed on the large diameter cylinder part, a second nozzle needle 80 reciprocatably stored in the first nozzle needle 70 and opening and closing a second injection hole 40 formed on the round crown part, and a sliding part 140 formed by a side wall of the second nozzle needle 80 and an inner wall of the round crown part and having a predetermined length. The sliding part 140 opens and closes the second injection hole 40.
COPYRIGHT: (C)2006,JPO&NCIPI

Abstract translation: 要解决的问题：为了在一个燃料喷射期间控制喷射速率的燃料喷射阀中保持滑动部分的长度以防止燃料早期注入期间向其它喷射孔泄漏。 解决方案：该阀设置有具有大直径圆筒部的阀体20和从大直径圆筒部的顶端突出的圆形冠部，可往复运动地存储在阀体20中的第一喷嘴针70， 打开和关闭形成在大直径圆筒部分上的第一喷射孔30，可往复运动地存储在第一喷嘴针70中并打开和闭合形成在圆形冠部上的第二喷射孔40的第二喷嘴针80和滑动部140 由第二喷嘴针80的侧壁和圆形冠部的内壁形成并且具有预定长度。 滑动部140打开和关闭第二喷射孔40.版权所有（C）2006，JPO＆NCIPI