Fuel injection device

A fuel injection device comprising:

• a nozzle element set on a cylinder of an internal combustion engine, the cylinder having an ignition plug disposed thereon;
• an injection hole forming member disposed on a front end part of the nozzle element;
• and
• a valve element having a valve element side seat surface that comes into contact with and separates from a seat surface formed on the injection hole forming member, wherein
• the injection hole forming member includes:
• a seat part having the seat surface;
• and
• a suck chamber formed on a front end part of the seat part, the suck chamber being a recess denting in a direction of heading from the seat surface toward the front end part of the seat part, and wherein
• the suck chamber has a suck chamber injection hole from which a fuel is jetted toward the ignition plug, the suck chamber injection hole formed on an axis of the injection hole forming member,
• a seat part injection hole for injecting the fuel is formed on the seat surface,
• a plurality of the seat part injection holes are formed on the seat surface, and the plurality of seat part injection holes are not arranged at least on a part of an area surrounding the suck chamber injection hole,
• the plurality of seat member injection holes are not formed closer to the ignition plug than the suck chamber injection hole member in the injection hole forming member, and
• the suck chamber injection hole is disposed closer to the ignition plug than the seat part injection hole in the injection hole forming member.