Atomization Characteristics of Two-Stream Injector for 4-Valve Engines

Paper #:
  • 920705

Published:
  • 1992-02-01
Citation:
Okamoto, Y., Arai, N., Nakagawa, K., Kosuge, T. et al., "Atomization Characteristics of Two-Stream Injector for 4-Valve Engines," SAE Technical Paper 920705, 1992, https://doi.org/10.4271/920705.
Pages:
9
Abstract:
A fuel injector adapter which can divide the fuel spray into two streams and produce fine fuel atomization is being developed to improve fuel economy and transient performance in four-valve gasoline engines. The adapter has the shape of a pair of spectacles and is attached to the orifice outlet of the injector. The optimum shape of the adaptor is investigated by 3-D viscous flow analysis by FEM and experiment. A 17% improvement in transient performance over the conventional Hitachi injector is confirmed by engine tests in a passenger car.
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