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Atomization Characteristics of Two-Stream Injector for 4-Valve Engines
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English
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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Authors
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.Also In
References
- Greiner M. et al. BOSCH Fuel Injectors - New Developments SAE Paper 870124 1987
- Nogi T. et al. Mixture Formation of Fuel Injection Systems in Gasoline Engines SAE Paper 880558 1988
- Kashiwaya M. et al. The Effect of Atomization of Fuel Injector on Engine Performance SAE Paper 900261 1990
- Ikegawa M. et al. Advances and Applications in Computational Fluid Dynamics 66 161 167 The Winter Annual Meeting of the ASME 1988