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.
Atomization Characteristics of Two-Stream Injector for 4-Valve Engines
Sae Technical Papers
International Congress & Exposition ; 1992
1992-02-01
Conference paper
English
Atomization characteristics of two-stream injector for 4-valve engines
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