Simultaneous particulate matter and nitrogen oxide emission reduction through enhanced charge homogenization in diesel engines
Žvar Baškovič, Urban (Author), Vihar, Rok (Author), Rodman Oprešnik, Samuel (Author), Katrašnik, Tomaž (Author)

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In the presented study, low temperature combustion was established with a direct injection of diesel fuel being a representative of high reactivity fuels and tire pyrolysis oil being a representative of low reactivity fuels. Tire pyrolysis oil was tested as a potential waste derived fuel for low temperature combustion, as it features diesel-like physical properties and lower cetane number compared to diesel fuel. The goal of this study was determination of suitable injection strategies and exhaust gas recirculation rates to explore potentials of both fuels in reducing emissions in low temperature combustion modes. It was demonstrated that relatively small changes in the engine control strategy possess the potential to significantly improve nitrogen oxide/particulate matter trade-off with minor effect on engine efficiency. In addition, low temperature combustion was for the first time successfully demonstrated with tire pyrolysis oil fuel, however, it was shown that lower reactivity of the fuel is by itself not sufficient to improve nitrogen oxide/ soot trade-off compared to the diesel fuel as entire spectra of fuel properties play an important role in improving nitrogen oxide/soot trade-off. This study thus establishes relations between different engine control strategies, intake manifold pressure and exhaust gas recirculation rate on engine thermodynamic parameters and engine-out emissions while utilizing innovative waste derived fuel that have not yet been analysed in similar combustion concepts.

Keywords:compression ignition engine, low temperature combustion, partially premixed combustion, tire pyrolysis oil, engine control, combustion parameters, emissions
Work type:Article (dk_c)
Tipology:1.01 - Original Scientific Article
Organization:FS - Faculty of Mechanical Engineering
Number of pages:str. 2039-2052
Numbering:Vol. 22, nr. 5
ISSN on article:0354-9836
DOI:10.2298/TSCI180131259Z Link is opened in a new window
COBISS.SI-ID:16267803 Link is opened in a new window
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Record is a part of a journal

Title:Thermal science
Shortened title:Therm.sci.
Publisher:VINČA Institute of Nuclear Sciences
COBISS.SI-ID:43417089 This link opens in a new window

Document is financed by a project

Funder:ARRS - Agencija za raziskovalno dejavnost Republike Slovenije (ARRS)
Project no.:P2-0401, MR:36402
Name:Energetsko strojništvo

Secondary language

Keywords:kompresijski vžig, nizko-temperaturno zgorevanje, zgorevanje delno homogenizirane zmesi, pirolizno olje iz pnevmatik, krmiljenje motorja, zgorevalni parametri, onesnažila

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