Title:
FUEL INJECTION DEVICE
Document Type and Number:
WIPO Patent Application WO/2017/145639
Kind Code:
A1
Abstract:
An injection hole (51) and an injection hole (54) are formed in such a way that the relationship γ≤θt1+θt2-0.87×P^0.52 is satisfied, where: γ (deg) is an inter-injection hole angle, being the angle between a central axis (Ac11) of the injection hole (51), serving as a first central axis, and a central axis (Ac12) of the injection hole (54), serving as a second central axis; θt1 (deg) is a first taper angle, being the angle formed by an outline of an injection hole inner wall (133) of the injection hole (51), serving as a first injection hole inner wall, in a cross section formed by means of a virtual plane including the entire first central axis (Ac11); θt2 (deg) is a second taper angle, being the angle formed by an outline of the injection hole inner wall (133) of the injection hole (54), serving as a second injection hole inner wall, in a cross section formed by means of a virtual plane including the entire second central axis (Ac12); and P (MPa) is the mean fuel pressure in a fuel passage (100) when fuel is injected from the injection hole (13).
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Inventors:
KATO NORITSUGU (JP)
Application Number:
PCT/JP2017/002841
Publication Date:
August 31, 2017
Filing Date:
January 27, 2017
Export Citation:
Assignee:
DENSO CORP (JP)
International Classes:
F02M61/18; F02M51/00
Foreign References:
| JP2005194929A | 2005-07-21 | |||
| JP2002221128A | 2002-08-09 | |||
| JP2015025392A | 2015-02-05 |
Attorney, Agent or Firm:
JIN Shunji (JP)
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