Abstract

The invention relates to a fuel/air injection system for internal combustion engines, turbine engines and other atomisation systems, comprising an injector (4) as well as an injection nozzle having a nozzle body (1), at least one nozzle hole (9), a nozzle needle (2) which is movable in a manner controlled by the injector (4), at least one fuel channel (5) and at least one air channel (10), wherein the nozzle needle (2) has, at its tip, a sealing surface (7) which sealingly interacts with a sealing seat of the injection nozzle (1) when the nozzle needle (2) is in the closed position, wherein a blind hole (8) for premixing fuel and pressurised air which flow to this blind hole (8) from the at least one fuel channel (5) and the at least one air channel (10) is located in the nozzle body (1) between the tip of the nozzle needle (2) and the at least one nozzle hole (9).

IPC Classes  ?

• F02M 67/02 - Apparatus in which fuel-injection is effected by means of high-pressure gas, the gas carrying the fuel into working cylinders of the engine, e.g. air-injection type the gas being compressed air, e.g. compressed in pumps
• F02M 61/12 - Other injectors with elongated valve bodies, i.e. of needle-valve type characterised by the provision of guiding or centring means for valve bodies