Abstract: The fuel injection valve for injecting fuel into a combustion chamber of an internal combustion engine comprises a valve housing and nozzle, having a nozzle body 1 with an axial bore 13 which has a slidable but not liquid-tight fitted nozzle needle 3 for reciprocating movement between opened and closed positions. In the upper portion of the axial bore 13 the sealing bellows 5 is fitted. The bottom of the bellows 5 is permanently kept in contact with upper end face of the nozzle needle 3. The bellow's flange is held in liquid-tight fashion between space 8 and top end face of the nozzle body for sealing the clearance between nozzle needle and body. A push rod 6 is the bellows 5 to impart an urging spring force to the nozzle needle 3. During the operation the nozzle needle 3 is lifted in unison with the bellows 5 against increased fuel pressure within the axial bore 13 in addition to the urging force of the nozzle spring 18.

Abstract: The fuel injection nozzle has a nozzle body 11 with a movable fuel control valve 13. At the front end of the nozzle body 11 there is a spray tip 12 with the discharge orifices 16. The fuel jet disintegrator 17 is running through two opposite located discharge orifices 16. The ends 18 of the disintegrator 17 have a shape of a spring with outer diameter greater than a diameter of the discharge orifices 16. During the operation, fuel jet, coming from the discharge orifice 16, impinges on the disintegrator 17, breaks up into a multitude of tiny particles and produces spray which provides more complete burning of the fuel with the reduction in smoke and fuel consumption.