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Patent Searching and Data


Title:
FUEL INJECTION VALVE AND ENGINE SYSTEM
Document Type and Number:
WIPO Patent Application WO/2018/221076
Kind Code:
A1
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.

Inventors:
HOSAKA Tomoyuki (6-6, Marunouchi 1-chome, Chiyoda-k, Tokyo 80, 〒1008280, JP)
ISHII Eiji (6-6, Marunouchi 1-chome, Chiyoda-k, Tokyo 80, 〒1008280, JP)
YOSHIMURA Kazuki (6-6, Marunouchi 1-chome, Chiyoda-k, Tokyo 80, 〒1008280, JP)
SUGII Taisuke (6-6, Marunouchi 1-chome, Chiyoda-k, Tokyo 80, 〒1008280, JP)
KUSAKABE Ryo (6-6, Marunouchi 1-chome, Chiyoda-k, Tokyo 80, 〒1008280, JP)
SUKEGAWA Yoshihiro (6-6, Marunouchi 1-chome, Chiyoda-k, Tokyo 80, 〒1008280, JP)
SARUWATARI Masayuki (2520, Takaba, Hitachinaka-sh, Ibaraki 03, 〒3128503, JP)
Application Number:
JP2018/016524
Publication Date:
December 06, 2018
Filing Date:
April 24, 2018
Export Citation:
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Assignee:
HITACHI AUTOMOTIVE SYSTEMS, LTD. (2520, Takaba Hitachinaka-sh, Ibaraki 03, 〒3128503, JP)
International Classes:
F02M61/18; F02B23/08; F02B23/10; F02B31/00; F02B31/04; F02B31/06; F02D41/04; F02D43/00; F02D45/00; F02F1/42; F02M61/14
Domestic Patent References:
WO2017047248A12017-03-23
WO2000077359A12000-12-21
Foreign References:
JP2017044174A2017-03-02
JP2007315276A2007-12-06
JP2015025392A2015-02-05
JP2007092635A2007-04-12
JPH10339151A1998-12-22
Attorney, Agent or Firm:
TODA Yuji (6-1, Marunouchi 1-chome, Chiyoda-k, Tokyo 20, 〒1008220, JP)
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