Patent ID: 6651911
Filing Date: 2003-11-25
Classification: B23H,F02M

Abstract:
Fuel injection valve with a nozzle body havinga guide area at a face end of the nozzle body, the guide area including a central guide hole, a pressure chamber area which connects to the guide area and has a pressure chamber into which the guide hole opens, a supply channel of the guide area which is located to a side of the guide hole and which opens into the pressure chamber, a nozzle holder body, and a hollow cylindrical intermediate piece disposed between the nozzle body and the nozzle holder body, characterized in that the entire supply channel of the guide area is curved, the guide area is stepped by a first step cut into an upper body section with a face and into a lower body section with a locating face, the guide hole has a hole opening on the face, the supply channel of the guide area has a supply opening on the locating face of the lower body section, the lower body section is closer than the upper body section to the pressure chamber area. the upper body section has a smaller diameter than the lower body section, the hollow cylindrical intermediate piece has a central plunger hole for guiding a plunger and a supply channel of the intermediate piece to the side of the plunger hole, the supply channel of the guide area is curved in an approximately circular manner, and the intermediate piece at its side facing the plunger hole is divided by a step cut into a hollow cylindrical supply area and into a hollow cylindrical plunger area.