Fuel Spray Simulation of Slit Nozzle Injector for Direct-Injection Gasoline Engine Aisan Industry Company, Limited

Format:

Conference/Event

Author/Creator:

Hayakawa, Masaya, author.

Conference Name:

SAE 2002 World Congress & Exhibition (2002-03-04 : Detroit, Michigan, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2002

Summary:

In direct-injection (DI) gasoline engines, spray characteristics greatly affect engine combustion. For the rapid development of new gasoline direct-injectors, it is necessary to predict the spray characteristics accurately by numerical analysis based on the injector nozzle geometry.In this study, two-phase flow inside slit nozzle injectors is calculated using the volume of fluid method in a three-dimensional CFD. The calculation results are directly applied to the boundary conditions of spray calculations, of which the submodels are recently developed to predict spray formation process in direct injection gasoline engines.The calculation results are compared with the experiments. Good agreements are obtained for typical spray characteristics such as spray shape, penetration and Sauter mean diameter at both low and high ambient pressures. Two slit nozzle injectors of which the slit thickness is different are compared. It is shown that the slit thickness controls the liquid sheet thickness and velocity distributions at the nozzle exit, and influences the spray tip shape and the Sauter mean diameter

Notes:

Vendor supplied data

Publisher Number:

2002-01-1135

Access Restriction:

Restricted for use by site license