Validation of a Novel Self Tuning Gross Heat Release Algorithm

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

Abstract

The present paper shows the validation of a self tuning heat release method with no need to model heat losses, crevice losses and blow by. Using the pressure and volume traces the method estimates the polytropic exponents (before, during and after the combustion event), by the use of the emission values and amount of fuel injected per cycle the algorithm calculates the total heat release. These four inputs are subsequently used for computing the heat release trace. The result is a user independent algorithm which results in more objective comparisons among operating points and different engines.

In the present paper the heat release calculated with this novel method has been compared with the one computed using the Woschni correlation for modeling the heat transfer. The comparison has been made using different fuels (PRF0, PRF80, ethanol and iso-octane) making sweeps in relative air-fuel ratio, engine speed, EGR and CA 50.

Details

Authors
Organisations
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Other Mechanical Engineering

Keywords

  • Internal Combustion Engines, Heat Release, Cylinder Pressure
Original languageEnglish
Title of host publicationSAE Technical Paper Series
PublisherSociety of Automotive Engineers
Volume2008-01-1672
Publication statusPublished - 2008
Publication categoryResearch
Peer-reviewedYes
EventSAE International Powertrains, Fuels and Lubricants Congress - Shanghai, China
Duration: 2008 Jun 23 → …

Publication series

Name
Volume2008-01-1672
ISSN (Print)0148-7191

Conference

ConferenceSAE International Powertrains, Fuels and Lubricants Congress
CountryChina
CityShanghai
Period2008/06/23 → …