Design and control of a direct fuel injector with rate shaping capability

Chienshin Wu, Zongxuan Sun

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Scopus citations

Abstract

This paper presents the design, modeling and control of a direct fuel injector with rate shaping capability. Applied with a hydro-mechanical internal feedback mechanism, the novel design can deliver continuously variable injection rate by controlling the injector needle position. The feedback circuit and the orifices of the injector control chamber are particularly designed to overcome some design obstacles, such as the small assembly space and needle stroke, and the short operation time scale. The proposed injector not only provides a feasible injection rate shaping capability but also overcomes the injection quantity inconsistency caused by the conventional multiple-injection strategy. To track the desired injection rate delivery, an iterative learning controller is derived. The controller corrects the injection rate cycle by cycle, and an observer is designed to estimate the injection rate for the feedback control realization.

Original languageEnglish (US)
Title of host publication2013 American Control Conference, ACC 2013
Pages3637-3642
Number of pages6
StatePublished - Sep 11 2013
Event2013 1st American Control Conference, ACC 2013 - Washington, DC, United States
Duration: Jun 17 2013Jun 19 2013

Publication series

NameProceedings of the American Control Conference
ISSN (Print)0743-1619

Other

Other2013 1st American Control Conference, ACC 2013
Country/TerritoryUnited States
CityWashington, DC
Period6/17/136/19/13

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