and a vaporizer area 21 attached to it two heating elements 23 are arranged in the receptacle sleeve with some distance between them in the axial direction are secured mechanically by metallic holding parts 24 and are electrically grounded holding parts 24 are for assisting the heat transfer from heating elements 23 to the sprayed fuel without interfering with the flow of fuel into vaporizer area 21 heating elements 23 are connected to a voltage source not shown through an electric line 25 that is electrically insulated the electric line 25 is introduced into casing 17 with a gas tight seal as illustrated in fig1 heating elements 23 include ring disks however other geometric designs of heating elements 23 are also contemplated by the present invention fig2 shows as an example of two sleeve shaped heating elements 23 39 that are coaxial with one another and with receptacle sleeve 22 the heating elements 23 39 are secured by a common holding part 24 holding part 24 is provided on the side of heating element 23 39 facing away from injection valve 10 and is designed in a manner not shown in detail here not to interfere with the discharge of fuel vapor out of vaporizer area 21 inner heating element 23 39 is preferably designed to be shorter in the axial direction than the outer element 23 heating elements 23 39 are connected electrically to line 25 through a branch line 26 fig3 shows another embodiment of heating elements 23 34 wherein heating elements 23 34 are arranged concentrically with one another and with.