a nozzle orifice 11 which abuts flush on the inner side of the partial cone shell so that the liquid fuel spray which propagates from each individual fuel nozzle propagates preferably perpendicularly to the inner wall of the partial cone shell the fuel spray which propagates from each individual fuel nozzle forms a conically expanding fuel spray cloud which includes a cone angle of u00b1 45 u00b0 with regard to an axis perpendicularly intersecting the nozzle orifice in order to avoid the wall regions of the partial cone shells which lie opposite the respective nozzle orifices being wetted by the propagating fuel spray clouds the liquid fuel supply units 9 10 are installed preferably downstream on the leading edge of a respective partial cone shell 2 3 so that no partial cone shell wall lies opposite the nozzle outlet orifices 11 and so the fuel spray clouds which issue from the fuel nozzle orifices can propagate freely into the inside of the swirl chamber 1 a fuel supply pressure of at least 20 bar is to be provided inside the liquid fuel lines in order to ensure a degree of atomization which is as high as possible and also to ensure a penetration depth of the liquid fuel to be introduced into the swirl chamber through the liquid fuel supply units which is as great as possible i e fuel droplets with droplet diameters of 50 u03bcm maximum preferably between 20 and 50 u03bcm are to aimed for in addition to the use of most simple fuel nozzles with a nozzle passage which extends rectilinearly and a flat nozzle orifice as they can be gathered from the schematized presentation in fig2.