Simulation of a diesel engine operating with ethanol to reduce pollutant emissions


In this study a computational model to simulate the operation of a diesel engine fuelled by blends of 95% diesel oil + 5 % biodiesel (B5) and anhydrous ethanol was developed. The model was developed using the Engineering Equation Solver (EES) software and calculates fuel and air properties and the thermodynamic processes of the engine cycle. Ethanol injection was investigated by two different techniques: direct injection in the combustion chamber, together with B5, and indirect injection in the intake air system, with B5 being directly injected in the combustion chamber. Fuel/air mixture equivalence ratio, compression ratio, and the injected amount of ethanol were varied to obtain the cycle temperature and pressure diagrams, fuel consumption, indicated power, and exhaust gas composition. Fuel/air mixture equivalence ratio was varied from 0.7 to 0.9, compression ratio was varied from 15:1 to 19:1, directly injected ethanol concentration was varied up to 20 % of the total fuel amount injected, and intake system injected ethanol concentration was varied up to 50 % of the total fuel amount injected. The results demonstrate that the use of ethanol can reduce carbon monoxide (CO) and oxides of nitrogen (NOX) emissions, slightly penalizing the net cycle work and increasing fuel consumption. Direct ethanol injection in the combustion chamber was shown to be more advantageous technique than indirect ethanol injection in the intake system.

Publication DOI:
Divisions: College of Engineering & Physical Sciences
College of Engineering & Physical Sciences > Energy and Bioproducts Research Institute (EBRI)
Additional Information: Copyright © 2014, AIDIC Servizi S.r.l.,. This journal provides immediate open access to its content on the principle that making research freely available to the public supports a greater global exchange of knowledge. Our policy is to permit Authors to reuse part of their CET articles or to self-archive the published version of their work in Institutional Repository, provided that AIDIC/CET is acknowledged as the source. The version to be used is the Publisher’s PDF. No embargo period is required.
Uncontrolled Keywords: Chemical Engineering(all)
Publication ISSN: 2283-9216
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Related URLs: http://www.scop ... tnerID=8YFLogxK (Scopus URL)
https://www.cet ... view/CET1439195 (Publisher URL)
PURE Output Type: Conference article
Published Date: 2014-08-20
Authors: Sodré, José Ricardo (ORCID Profile 0000-0003-2243-8719)
De Souza Brito, Rodrigo Teixeira
De Oliveira, Alex
De Morais, André Marcelino



Version: Published Version

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