Affiliations: [a] College of Mechanical Engineering, University of Shanghai for Science and Technology, Shanghai, China | [b] Institute of Automotive Engineering, Shanghai Jiao Tong University, Shanghai, China
Correspondence:
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Corresponding author: Zhendong Zhang, College of Mechanical Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China. Tel.: +86 021 55275287; Fax: +86 021 55270456; E-mail:usstzzd@usst.edu.cn
Abstract: GDI (Gasoline Direct injection) injector is one of the
most important components in GDI engine, which requires high precision and
dynamic response. The magnetic circuit configuration as the key part of GDI
injector which decides the magnetic force, dynamic response, energy loss and
temperature rising. All these factors directly or indirectly impact on the
GDI injector comprehensive performance. The aim of this investigation is to
optimize the magnetic circuit configuration and improve the comprehensive
performance for GDI injector. The specific factors that influence the
optimum operation of the GDI injector have been analyzed based on physical
theories. MOSA (Multi Objective Simulated Annealing) algorithm is used to
implement the multi-objective parameters optimization for the magnetic
circuit configuration. To validate the optimization results the
multi-physical fields coupling simulation based on Finite Element Method
(FEM) is used, and the simulation results were validated by experiments.
Compared the initial configuration to the optimized one, the comprehensive
performances have great improvement after optimization. The results indicate
that the methods can be used to GDI injector concept design and performances
prediction.
Keywords: GDI injector, multi-physical fields, MOSA algorithm, FEM
