Invention Grant
- Patent Title: Spark-ignition direct fuel injection valve
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Application No.: US16012275Application Date: 2018-06-19
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Publication No.: US10704518B2Publication Date: 2020-07-07
- Inventor: Yoshihito Yasukawa , Kiyotaka Ogura , Takao Miyake , Eiji Ishii , Motoyuki Abe , Tohru Ishikawa
- Applicant: Hitachi Automotive Systems, Ltd.
- Applicant Address: JP Hitachinaka-Shi
- Assignee: HITACHI AUTOMOTIVE SYSTEMS, LTD.
- Current Assignee: HITACHI AUTOMOTIVE SYSTEMS, LTD.
- Current Assignee Address: JP Hitachinaka-Shi
- Agency: Foley & Lardner LLP
- Priority: com.zzzhc.datahub.patent.etl.us.BibliographicData$PriorityClaim@18aa2837
- Main IPC: F02M69/04
- IPC: F02M69/04 ; F02M61/18 ; F02M51/06 ; F02M67/12

Abstract:
A spark-ignition direct fuel injection valve includes, at least, a seat member provided with a fuel injection hole and a valve seat and a valve body which controls fuel injection from the injection hole by contacting and separating from the valve seat. In the spark-ignition direct fuel injection valve: the injection hole has an injection hole inlet which is open inwardly of the seat member and an injection hole outlet which is open outwardly of the seat member; an opening edge of the injection hole inlet has a first round-chamfered portion formed on an upstream side with respect to a fuel flow toward the injection hole inlet; and an extending length (L) of the injection hole does not exceed three times a hole diameter (D) of the injection hole.
Public/Granted literature
- US20180363615A1 SPARK-IGNITION DIRECT FUEL INJECTION VALVE Public/Granted day:2018-12-20
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