Application of an EGR system in a direct injection diesel engine to reduce NOx emissions

J. R. Sodré, D. De Serio, A. De Oliveira

Research output: Contribution to journalConference articlepeer-review


This work presents the application of an exhaust gas recirculation (EGR) system in a direct injection diesel engine operating with diesel oil containing 7% biodiesel (B7). EGR rates of up to 10% were applied with the primary aim to reduce oxides of nitrogen (NOx) emissions. The experiments were conducted in a 44 kW diesel power generator to evaluate engine performance and emissions for different load settings. The use of EGR caused a peak pressure reduction during the combustion process and a decrease in thermal efficiency, mainly at high engine loads. A reduction of NOx emissions of up to 26% was achieved, though penalizing carbon monoxide (CO) and total hydrocarbons (THC) emissions.

Original languageEnglish
Article number032001
JournalJournal of Physics: Conference Series
Issue number3
Publication statusPublished - 21 Oct 2016
Event7th European Thermal-Sciences Conference, Eurotherm 2016 - Krakow, Poland
Duration: 19 Jun 201623 Jun 2016

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