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http://dx.doi.org/10.5302/J.ICROS.2004.10.12.1305

Observer Design of an Injector for Fuel Control in DI Diesel Engines with an Electronically Controlled Injector  

Kim Sunwoo (한양대학교 자동차공학과)
Lee Kangyoon (한양대학교 자동차공학과)
Chung Namhoon (한양대학교 자동차공학과)
Sunwoo Myoungho (한양대학교 자동차공학과)
Publication Information
Journal of Institute of Control, Robotics and Systems / v.10, no.12, 2004 , pp. 1305-1311 More about this Journal
Abstract
This study presents a mathematical model and a sliding mode observer of the injection system for common rail diesel engines. The injector model consists of three subsystems: the actuator subsystem, the mechanical subsystem, and the hydraulic subsystem. In the actuator subsystem, the constitutive relations of piezoelectricity are used to model the actuator made up of piezoelectric material. Based on the proposed model, the observer estimates the injection rate and injection timing, and can play a vital role of sensorless control of fuel injection in the near future. The sliding mode theory is applied to the observer design in order to overcome model uncertainties. The injector model and observer are evaluated through the injector experiments. The simulation results of the injector model are in good agreement with the experimental data. The sliding mode observer can effectively estimate the injection timing and the injection rate of the injector.
Keywords
common rail diesel engine; injection rate; injection timing; sliding mode observer; piezoelectricity;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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