FUEL INJECTION VALVE

WIPO Patent Application WO/2019/098025

A1

The purpose of the present invention is to provide a fuel injection valve with which it is possible to reduce break away of fuel flow within an injection hole by applying simple machining to the entrance of the injection hole. In the present invention, a plurality of injection holes 201a1, 201b1 are classified into a first injection hole 201a1 that has a greater inclination angle and a second injection hole 201b1 that has a smaller inclination angle, with respect to the central axis line 210 of a valve element. The first injection hole 201a1 is configured such that a radially-outer-side entrance opening edge 201a1A of a valve seating face 203 is disposed on the inner side of a first groove 202a1 formed in the valve seating face 203 so as to cause an outer-diameter-side entrance angle θa1 to be increased. The second injection hole 201b1 is configured such that the radially-inner-side entrance opening edge 201b1B of the valve seating face 203 is disposed on the inner side of a second groove 202b1 formed in the valve seating face 203 so as to cause the inner-diameter-side entrance angle θb1 to be increased.

YOSHIMURA KAZUKI (JP)
ISHII EIJI (JP)
MIYAKE TAKAO (JP)
NAMAIZAWA YASUO (JP)

PCT/JP2018/040453

May 23, 2019

October 31, 2018

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HITACHI AUTOMOTIVE SYSTEMS LTD (JP)

F02M61/18; F02M51/06; F02M61/16

WO2000017514A1

2000-03-30

JPH0267459A	1990-03-07
JP2016113983A	2016-06-23
JP2016217245A	2016-12-22
JPH0486373A	1992-03-18
JP2014196702A	2014-10-16

TODA Yuji (JP)

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