Fuel injection valve

A fuel injection valve comprising:

• a nozzle that includes an injection hole through which fuel is injected and a valve seat formed around the injection hole;
• a housing that has a fuel flow path through which the fuel to the injection hole flows;
• a needle one end of which is configured to open and close the injection hole by being separated from the valve seat or abutted on the valve seat;
• and
• a throttle portion that is provided upstream with respect to the valve seat in a fuel flow direction, and includes
• a movable part at least a part of which is relatively movable with respect to the housing, and
• a throttle flow path that is formed so as to allow the fuel to flow through and has a minimum flow path area that changes when the movable part moves relative to the housing, wherein
• the minimum flow path area of the throttle flow path during a valve opening time in which the needle is separated from the valve seat is larger than the minimum flow path area of the throttle flow path during a valve closing time in which the needle is abutted on the valve seat,
• the minimum flow path area of the throttle flow path during the valve opening time is larger than a minimum flow path area between the valve seat and the needle during the valve opening time in which the needle is most separated from the valve seat,
• a maximum value of the minimum flow path area of the throttle flow path during the valve opening time is regulated to be constant, and
• the needle is provided separately from the throttle portion so as to be relatively movable with respect to the throttle portion, and is provided between the valve seat and the throttle portion.