Phenomenological NO model for conventional heavy-duty diesel engine combustion

R. S G Baert, X. L J Seykens

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

1 Citation (Scopus)

Abstract

A phenomenological model is presented that predicts NO emissions from a conventional heavy-duty diesel combustion process. As the model is intented for application in the field of engine control, modeling activities have aimed at limiting the computational effort while maintaining a sound physical/chemical basis. The main inputs to the model are in-cylinder pressure data and trapped in-cylinder conditions together with basic fuel spray information. For its validation measured concentrations of respectively in-cylinder and exhaust gas NO from two different engines have been used. Relative changes in NO for a variation in fuel injection timing and for a variation in exhaust gas recirculation rate are well captured by the model. However, absolute emission levels are significantly overpredicted. Observed deviations are evaluated and possible explanations are suggested.

Original languageEnglish
Title of host publicationInstitution of Mechanical Engineers
Subtitle of host publicationCombustion Engines and Fuels Group - Internal Combustion Engines: Performance, Fuel Economy and Emissions
Place of PublicationUnited Kingdom, London
Pages131-142
Number of pages12
Publication statusPublished - 24 Sep 2008
EventInternal Combustion Engines: Performance, Fuel Economy and Emissions Conference - London, United Kingdom
Duration: 11 Dec 200712 Dec 2007

Conference

ConferenceInternal Combustion Engines: Performance, Fuel Economy and Emissions Conference
CountryUnited Kingdom
CityLondon
Period11/12/0712/12/07

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