Numerical Simulation on Spray Atomization and Fuel-Air Mixing Process in a Gasoline Direct Injection Engine Geely Automotive Institute

Format:

Conference/Event

Author/Creator:

Liu, Liu, author.

Contributor:

Shen, Yuan

You, Yi

Zhao, Fuquan

Conference Name:

SAE 2012 World Congress & Exhibition (2012-04-24 : Detroit, Michigan, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2012

Summary:

Numerical simulation has been widely used in the engine development process to improve the development quality, especially in the area of in-cylinder flow and fuel evaporation. In this paper, a fuel spray model for a gasoline direct injection (GDI) engine, calibrated against spray visualization in a spray bomb, is developed to characterize the fuel spray atomization, vaporization, and interaction with in-cylinder air flow. With this model, fuel atomization and fuel-air mixing process are thoroughly analyzed at full load operating conditions at both low and high speeds. It is shown that fuel spray at high speed is deflected towards intake side, leading to limited wall wetting, piston wetting, and good vaporization, due to intensive tumble flow and high temperature. The results from the numerical simulation provide important guideline for the development of a GDI engine

Notes:

Vendor supplied data

Publisher Number:

2012-01-0395

Access Restriction:

Restricted for use by site license