Design of drive circuit for GDI injector

Author

Huang, Du ; Ding, Hongyuan ; Wang, Zhaowen ; Huang, Ronghua

Author_Institution

Huazhong Univ. of Sci. & Technol., Wuhan, China

fYear

2011

fDate

15-17 April 2011

Firstpage

5821

Lastpage

5824

Abstract

High-accuracy injection control of the injector has been the key technique for GDI engines, which can be realized by high-accuracy current control of the solenoid valve coil. To accurately control dynamic flow range, it is necessary to not only accelerate the opening speed of injector by raising peak current of solenoid valve coil, but also accelerate the closing speed by control of hold current. The research designs drive circuits for a GDI injector and analyze functions of each module based on drive and functional requirements. It has been verified that drive circuits satisfy drive requirements by the current waveform obtained from measurement.

Keywords

driver circuits; electric current control; internal combustion engines; solenoids; valves; velocity control; GDI engine; GDI injector; control dynamic flow range; current control; current waveform; drive circuit design; high accuracy injection control; injector speed; solenoid valve coil; Coils; Engines; Hysteresis; MOSFETs; Solenoids; Valves; Voltage control; GDI injector; drive circuit; drive waveform; fast opening; high-accuracy control;

fLanguage

English

Publisher

ieee

Conference_Titel

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

Conference_Location

Wuhan

Print_ISBN

978-1-4244-8036-4

Type

conf

DOI

10.1109/ICEICE.2011.5776980

Filename

5776980