FUEL INJECTION NOZZLE

摘要

According to an aspect of the present invention, there is provided a fuel injection nozzle for injecting fuel into a combustion chamber of an internal combustion engine. The nozzle includes a nozzle body having a bore for receiving fuel from a supply line for pressurized fuel. At least one injection opening is provided for delivering fuel from the bore to the combustion chamber, the at least one injection opening having a total cross sectional area (Atot). A needle is longitudinally displaceable within the bore between a closed position in which the flow of fuel through the at least one injection opening into the combustion chamber is prevented, and an injection position in which the flow of fuel through the at least one injection opening into the combustion chamber is enabled. A restriction is provided for restricting the flow of fuel through the bore. The restriction is dimensioned as a function of the total cross sectional area (Atot) of the at least one injection opening.