| 主权项 |
1. A fuel injection nozzle through which fuel is injected into a combustion chamber of an internal combustion engine, the fuel being a DME fuel containing dimethyl ether as a main component, the fuel injection nozzle comprising:
a nozzle body having a plurality of injection holes; and a needle accommodated in the nozzle body to open or close the plurality of injection hole, wherein the nozzle body having
a seat part to which the needle seated or from which the needle separated, anda tip end chamber arranged downstream of the seat part in a flow of the DME fuel to communicate with the plurality of injection holes, and the DME fuel in the tip end chamber is heated with combustion heat in the combustion chamber to have a supercritical state. |
