Fuel injection nozzle for internal combustion engines

Claim 1

An injection nozzle for fuel injection internal combustion engines which includes: nozzle housing means having conduit means therein for connection to a fuel supply, nozzle body means connected to said nozzle housing means and having passage means therethrough and also having an axial bore therethrough provided with nozzle opening means, nozzle needle means axially movable in said axial bore for controlling said nozzle opening means, said nozzle body having annular fuel-receiving chamber means surrounding said needle means and communicating with said nozzle opening means, spring housing means arranged within said nozzle housing means and having conduit means therein establishing fuel fluid communication between said conduit means in said nozzle housing means and said passage means in said nozzle body means, bearing means supported by said nozzle needle means and extending into said spring housing means, spring dish means supported by said bearing means, and a plurality of spring means arranged within said spring housing means and under preload having one end engaging said spring dish means, the resultant line of force of said plurality of spring means passing through said bearing means and being in substantially axial alignment with the axis of said needle means.