THERMAL SCIENCE

International Scientific Journal

Arash Nemati

,

Ramin Barzegar

,

Shahram Khalilarya

,

Hassan Khatamnezhad

DECREASING THE EMISSIONS OF A PARTIALLY PREMIXED GASOLINE FUELED COMPRESSION IGNITION ENGINE BY MEANS OF INJECTION CHARACTERISTICS AND EGR

ABSTRACT
This paper is presented in order to elucidate some numerical investigations related to a partially premixed gasoline fuelled engine by means of three dimensional CFD code. Comparing with the diesel fuel, gasoline has lower soot emission because of its higher ignition delay. The application of double injection strategy reduces the maximum heat release rate and leads to the reduction of NOx emission. For validation of the model, the results for the mean in-cylinder pressure, H.R.R., NOx and soot emissions are compared with the corresponding experimental data and show good levels of agreement. The effects of injection characteristics such as, injection duration, spray angle, nozzle hole diameter, injected fuel temperature and EGR rate on combustion process and emission formation are investigated yielding the determination of the optimal point thereafter. The results indicated that optimization of injection characteristics leads to simultaneous reduction of NOx and soot emissions with negligible change in IMEP.
KEYWORDS
CI engine, gasoline fuel, emission reduction, combustion, injection characteristics, EGR
PAPER SUBMITTED: 2011-02-27
PAPER REVISED: 2011-09-22
PAPER ACCEPTED: 2011-09-26
DOI REFERENCE: https://doi.org/10.2298/TSCI110227099N
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2011, VOLUME 15, ISSUE Issue 4, PAGES [939 - 952]
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Decreasing the emissions of a partially premixed gasoline fueled compression ignition engine by means of injection characteristics and EGR

© 2024 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, National Institute of the Republic of Serbia, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence