| 摘要 |
PURPOSE:To improve a conversion of fuel into fine particles and form a wide and thin film-like injection flow by a method wherein the injection flows injected from different nozzle tips in a group of nozzles are struck against to each other just after the injection of fuel so as to form composite injecting film-like flow opened in an outward direction. CONSTITUTION:Injection ports 14 are made at each of nozzle tips 10a, 10b...10g in such a way as they are crossed with an injection axis 10 of another tip in front of the nozzle, injection flows injected from different nozzle tip 13 are struck against to each other just after the injection so as to form the film-like composite injection flow A opened outwardly. In this case, a striking angle of the injection flows at the front part of the nozzles, that is a crossing angle of alpha is preferably set to about 15-25 deg.. A composite injection angle theta of entire group of nozzles formed by a striking action of the injection flows in front of the nozzles is preferably set at a range of about 30-55 deg.. |
