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1. (WO2018221076) FUEL INJECTION VALVE AND ENGINE SYSTEM

Pub. No.:    WO/2018/221076    International Application No.:    PCT/JP2018/016524
Publication Date: Fri Dec 07 00:59:59 CET 2018 International Filing Date: Wed Apr 25 01:59:59 CEST 2018
IPC: F02M 61/18
F02B 23/08
F02B 23/10
F02B 31/00
F02B 31/04
F02B 31/06
F02D 41/04
F02D 43/00
F02D 45/00
F02F 1/42
F02M 61/14
Applicants: HITACHI AUTOMOTIVE SYSTEMS, LTD.
日立オートモティブシステムズ株式会社
Inventors: HOSAKA Tomoyuki
保坂 知幸
ISHII Eiji
石井 英二
YOSHIMURA Kazuki
吉村 一樹
SUGII Taisuke
杉井 泰介
KUSAKABE Ryo
草壁 亮
SUKEGAWA Yoshihiro
助川 義寛
SARUWATARI Masayuki
猿渡 匡行
Title: FUEL INJECTION VALVE AND ENGINE SYSTEM
Abstract:
The purpose of the present invention is to provide a fuel injection valve capable of forming a highly homogeneous fuel spray in a combustion chamber and reducing wall adhesion. To this end, the fuel injection valve of the present invention, which injects fuel directly into a combustion chamber, is configured to include a first injection hole group in which the central axis of the fuel injection hole is directed closer to a spark plug tip portion than to the piston upper surface center side, and a second injection hole group in which the central axis of the fuel injection hole is directed closer to the piston upper surface center side than to the spark plug tip portion. The flow rate of the spray injected from the fuel injection hole of the first injection hole group is larger and the penetration of the spray is smaller than those of the fuel injection hole of the second injection hole group.