Fuel injection valve

A fuel injection valve comprising:

• a valve body that includes a valve hole;
• a valve element provided in the-valve body so as to open and close the valve hole;
• and
• a nozzle hole plate provided in the valve body so as to cover the valve hole,
• wherein:
• a nozzle hole that extends through in a plate thickness direction is formed in the nozzle hole plate,
• a flow path cross-section of the nozzle hole being formed such that an entry-side open end portion that is positioned on a valve body side is formed in an oval shape having a long axis and a short axis, in a plan view with respect to the nozzle hole plate,
• the nozzle hole is formed such that a second angle that is an intersecting angle of opposing nozzle hole inner wall surface portions in a cross-section along the short axis of the entry-side open end portion is greater than a first angle that is an intersecting angle of opposing nozzle hole inner wall surface portions in a cross-section along the long axis of the entry-side open end portion, and
• a recessed portion that surrounds a periphery of the valve hole is formed in a portion of the nozzle hole plate that faces the valve body.

A fuel injection valve comprising:

• a valve body that includes a valve hole;
• a valve element provided in the valve body so as to open and close the valve hole;
• and
• a nozzle hole plate provided in the valve body so as to cover the valve hole,
• wherein:
• a nozzle hole that extends through in a plate thickness direction is formed in the nozzle hole plate,
• a flow path cross-section of the nozzle hole being formed such that, in a plan view with respect to the nozzle hole plate, an entry-side open end portion that is positioned on a valve body side is formed in an oval shape having a long axis and a short axis and an exit-side open end portion that is positioned on an opposite side from the valve body side is formed having a long axis and a short axis, and
• the nozzle hole is formed such that a second angle that is an intersecting angle of opposing nozzle hole inner wall surface portions in a cross-section along the short axes of the entry-side open end portion and exit-side open end portion is greater than a first angle that is an intersecting angle of opposing nozzle hole inner wall surface portions in a cross-section along the long axes of the entry-side open end portion and exit-side open end portion.