Steady state fuel consumption optimization through feedback control of estimated cylinder individual efficiency

Research output: Chapter in Book/Report/Conference proceedingPaper in conference proceeding

Abstract

Engine efficiency is often controlled in an indirect
way through combustion timing control. This requires a priori
knowledge of where to phase the combustion for different
operating points and conditions. With cylinder individual efficiency
estimation, control strategies aiming directly at fuel
consumption optimization can be developed. It has previously
been shown that indicated efficiency can be estimated using the
cylinder pressure trace. This paper presents a method to use
the estimated efficiency as a feedback variable in an extremum
seeking control strategy for online steady state fuel consumption
optimization. The experimental results show that the controller
manages to find the maximum brake torque region at the given
operating point both with and without external excitation.

Details

Authors
Organisations
Original languageEnglish
Title of host publicationProceedings of the 2012 American Control Conference
PublisherIEEE - Institute of Electrical and Electronics Engineers Inc.
Pages4210-4214
ISBN (Electronic)978-1-4577-1096-4
ISBN (Print)978-1-4577-1095-7
Publication statusPublished - 2012 Oct 2
Publication categoryResearch
Peer-reviewedYes
EventAmerican Control Conference, 2012 - Montréal, Canada
Duration: 2012 Jun 272012 Jun 29

Publication series

NameProceedings of the American Control Conference
PublisherIEEE
ISSN (Print)0743-1619
ISSN (Electronic)2378-5861

Conference

ConferenceAmerican Control Conference, 2012
CountryCanada
CityMontréal
Period2012/06/272012/06/29