β Scribed by Masaaki Kubo; Takashi Araki; Shuji Kimura
No coin nor oath required. For personal study only.
A three-dimensional viscous flow analysis method using a cavitation model was applied to run internal flow calculations for the fuel injector nozzles of direct-injection diesel engines. It is especially notable that this method made it possible to examine and clarify the mechanism producing an asymmetrical spray from the valve covered orifice type nozzle under a small lift condition with an eccentric needle position. The calculated results for cavitation were compared with experimental data obtained by using a transparent model scaled up fivefold, and good qualitative agreement was seen between the two sets of data.
π SIMILAR VOLUMES
A two-zone model for the calculation of the closed cycle of a direct injection (DI) diesel engine is presented. The cylinder contents are taken to comprise a non-burning zone of air and another homogeneous zone in which fuel is continuously supplied from the injector holes during injection and burne