Estimation of semi-volatile particle composition from premixed low temperature Diesel combustion using evaporative tandem differential mobility analysis

G. Lucachick, A. Avenido, William Northrop

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

Abstract

Diesel low temperature combustion (LTC) is an engine operational strategy that effectively reduces soot and oxides of nitrogen (NOx) emissions. A downside to LTC is particulate matter (PM) containing high levels of semi-volatile material due to elevated hydrocarbon concentrations. The mechanics of formation and composition of this semi-volatile PM has been largely uncharacterized. In this work, we investigate engine-out PM and HC emissions from LTC modes and equivalent conventional diesel combustion modes. An experimental strategy using tandem differential mobility analysis was implemented to investigate organic PM volatility as a function of particle size. The results indicate that semi-volatile PM from LTC is comprised of compounds spanning a wide range of volatilities. Differences in PM volatility were even greater for particles of different size groups. The results show that gas-to-PM conversion processes require additional investigation to determine the clear impact of LTC implementation on real-world PM emissions.

Original languageEnglish (US)
Title of host publicationWestern States Section of the Combustion Institute Spring Technical Meeting 2014
PublisherWestern States Section/Combustion Institute
Pages296-306
Number of pages11
ISBN (Electronic)9781632665218
StatePublished - Jan 1 2014
EventWestern States Section of the Combustion Institute Spring Technical Meeting 2014 - Pasadena, United States
Duration: Mar 24 2014Mar 25 2014

Publication series

NameWestern States Section of the Combustion Institute Spring Technical Meeting 2014

Other

OtherWestern States Section of the Combustion Institute Spring Technical Meeting 2014
CountryUnited States
CityPasadena
Period3/24/143/25/14

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    Lucachick, G., Avenido, A., & Northrop, W. (2014). Estimation of semi-volatile particle composition from premixed low temperature Diesel combustion using evaporative tandem differential mobility analysis. In Western States Section of the Combustion Institute Spring Technical Meeting 2014 (pp. 296-306). (Western States Section of the Combustion Institute Spring Technical Meeting 2014). Western States Section/Combustion Institute.