Abstract: The injector nozzle comprises a housing (1) with a conical seat (2) passing into a cylindrical channel (3) with atomizing holes (4). Installed in the housing (1) is a needle (5) with a shut-off truncated cone (6) which is connected, through the intermediate portion (8) of the needle (5), with a throttling element (7). The lateral surface (10) of the intermediate portion (8) of the needle (5) is located inside an imaginary cone (13) and the throttling edge (9) of the throttling element (7) is located at the surface of this cone (13) whose base is constituted by a surface confined by the shut-off edge (12) of the shut-off cone (6) and whose vertex angle (.alpha.) is 0.5-2.0 degrees greater than the vertex angle (62) of the conical seat (2). The throttling edge (9) is located on the level of the minimum diameter of the conical seat (2) and is formed by the line of intersection of the lateral surface (10) of the intermediate portion (8) of the needle (5) and the lateral surface (11) of the throttling element (7).