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The effect of injector position on the performance of a homogeneous direct injection gasoline engine

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3 Author(s)
Xiaolong Yang ; State Key Laboratory of Advanced Design and Manufacture for Vehicle Body, Hunan University, Changsha, 410082, China ; Jia Yang ; Kaiyao Hu

The effect of injector position on the performance of a homogeneous gasoline direct injection (GDI) engine is studied by 3-dimensional multiphase simulation. The Reitz-Diwakar droplet break-up model and the 3 Zones Extended Coherent Flame Model (ECFM3Z) combustion model are adopted. Two different positions of injector are investigated. By comparing the velocity field, droplet distribution, atomization percent and the pressure, it was found that the position of the nozzles has great influence on the performance of the engine. Optimizing the position will increase the atomization and generate uniform mixed gas, which leads to better combustion.

Published in:

Electric Information and Control Engineering (ICEICE), 2011 International Conference on

Date of Conference:

15-17 April 2011