<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>0122-5383</journal-id>
<journal-title><![CDATA[CT&F - Ciencia, Tecnología y Futuro]]></journal-title>
<abbrev-journal-title><![CDATA[C.T.F Cienc. Tecnol. Futuro]]></abbrev-journal-title>
<issn>0122-5383</issn>
<publisher>
<publisher-name><![CDATA[Instituto Colombiano del Petróleo (ICP) - ECOPETROL S.A.]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0122-53832024000200059</article-id>
<article-id pub-id-type="doi">10.29047/01225383.749</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[THE IMPACT OF MIXED FUELS CONTAINING PYROLYSIS OIL, DIESEL, N-BUTANOL AND 2-EHN ON EMISSIONS AND PERFORMANCE OF DIESEL ENGINE]]></article-title>
<article-title xml:lang="es"><![CDATA[EVALUACIÓN DE LAS EMISIONES Y RENDIMIENTOS DEL MOTOR DIÉSEL DE COMBUSTIBLES QUE CONTIENEN ACEITE DE PIRÓLISIS N-BUTANOL Y NITRATO DE 2-HEXILO]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Yalçin]]></surname>
<given-names><![CDATA[Arif Hakan]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Mutlu]]></surname>
<given-names><![CDATA[ibrahim]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[&#350;im&#351;ir]]></surname>
<given-names><![CDATA[Ercan]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Akbulut]]></surname>
<given-names><![CDATA[Furkan]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Emiro&#287;lu]]></surname>
<given-names><![CDATA[Alaattin Osman]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[&#350;en]]></surname>
<given-names><![CDATA[Mehmet]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Keskin]]></surname>
<given-names><![CDATA[Ahmet]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Afyon Kocatepe University Department of Transportation Services ]]></institution>
<addr-line><![CDATA[Afyonkarahisar ]]></addr-line>
<country>Turkey</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Afyon Kocatepe University Department of Automotive Engineering ]]></institution>
<addr-line><![CDATA[Afyonkarahisar ]]></addr-line>
<country>Turkey</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Hitit University Department of Motor Vehicles and Transportation Technology ]]></institution>
<addr-line><![CDATA[Çorum ]]></addr-line>
<country>Turkey</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Bolu Abant Izzet Baysal University Department of Mechanical Engineering ]]></institution>
<addr-line><![CDATA[Bolu ]]></addr-line>
<country>Türkiye</country>
</aff>
<aff id="Af5">
<institution><![CDATA[,Bolu Abant Izzet Baysal University Department of Motor Vehicles and Transportation ]]></institution>
<addr-line><![CDATA[Bolu ]]></addr-line>
<country>Türkiye</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2024</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2024</year>
</pub-date>
<volume>14</volume>
<numero>2</numero>
<fpage>59</fpage>
<lpage>66</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S0122-53832024000200059&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S0122-53832024000200059&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S0122-53832024000200059&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT The environmental impactof fossil fuels and their limited availability increase the need for research into alternative energy sources. In this research, pyrolysis oil (PO) was obtained from waste sour cherry kernels. PO cannot be used directly as fuel in diesel engines because of its negative fuel properties, such as low energy density, high viscosity, high water content, and low cetane number. Therefore, PO was blended with diesel at various weight proportions (wt%) using n-butanol (NB) as co-solvent, and 2-ethylhexyl nitrate (2-EHN) as cetane improver. Blended fuels containing 40 wt% diesel i.e., D2 (Diesel 40% / PO 0% / NB 55% / 2-EHN %5), D3 (Diesel 40 / PO 5% / NB 50% / 2-EHN 5%) and D4 (Diesel 40% / PO 15% / NB 40% / 2-EHN 5%) were identified as optimal blend compositions regarding the physicochemical characteristics of fuel. These fuels were tested for engine performance and emission characteristics at engine speeds of 1500, 1800, 2400, 3000 and 3600 rpm under full engine load (10 Nm) in a single-cylinder diesel engine. All data (i.e. cylinder pressure, engine torque and performance changes, heat release rate, and emission characteristics) were recorded using a Kistler KiBox data acquisition system. The engine tests showed a decrease in NOx, HC and soot emissions when blended fuels (D2, D3 and D4) were compared to D1 (Diesel 100% / PO 0% / NB 0% / 2-EHN 0°%). The lower NOx emissions in the blended fuels are explained by the PO's water content. Water raises the specific heat capacity of the fuel-air mixture while reducing the internal cylinder temperature. Additionally, the high latent heat of evaporation of n-butanol may contribute to reduce NOx emissions. In addition, the decrease in HC emissions may be caused by the increase in the oxygen ratio of blended fuels, while the decrease in soot emissions may be caused by the low C/H ratio and high oxygen content of blended fuels. To conclude, blends of PO, diesel n-butanol, and 2-EHN can be used as biofuels in diesel engine applications.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN Los impactos ambientales de los combustibles fósiles y su disponibilidad limitada aumentan la necesidad de investigar fuentes de energía alternativas. En esta investigación, se obtuvo aceite de pirólisis (PO) a partir de residuos de huesos de cereza ácida. El PO no puede utilizarse directamente como combustible en motores diésel debido a sus propiedades negativas, como baja densidad de energía, alta viscosidad, alto contenido de agua y bajo número de cetano. Por lo tanto, el PO se mezcló con diésel en varias proporciones de peso (wt%) utilizando n-butanol (NB) como co-solvente y nitrato de 2-etilhexilo (2-EHN) como mejorador del cetano. Los combustibles mezclados que contienen 40 wt% de diésel, es decir, D2 (Diésel 40% / PO 0% / NB 55% / 2-EHN 5%), D3 (Diésel 40% / PO 5% / NB 50% / 2-EHN 5%) y D4 (Diésel 40% / PO 15% / NB 40% / 2-EHN 5%) fueron identificados como las composiciones óptimas de mezcla con respecto a las características fisicoquímicas del combustible. Estos combustibles se probaron para el rendimiento del motor y las características de emisión a velocidades del motor de 1500, 1800, 2400, 3000 y 3600 rpm bajo carga completa del motor (10 Nm) en un motor diésel de un solo cilindro. Todos los datos (es decir, presión en el cilindro, par motor y cambios en el rendimiento, tasa de liberación de calor y características de emisión) se registraron utilizando un sistema de adquisición de datos Kistler KiBox. Las pruebas del motor mostraron una disminución en las emisiones de NOx, HC y hollín cuando se compararon los combustibles mezclados (D2, D3 y D4) con D1 (Diésel 100% / PO 0% / NB 0% / 2-EHN 0%). Las menores emisiones de NOx en los combustibles mezclados se explican por el contenido de agua del PO. El agua aumenta la capacidad calorífica específica de la mezcla de aire-combustible mientras reduce la temperatura interna del cilindro. Además, el alto calor de evaporación del n-butanol puede contribuir a una reducción en las emisiones de NOx. Además, la disminución de las emisiones de HC puede ser causada por el aumento en la proporción de oxígeno de los combustibles mezclados, mientras que la disminución de las emisiones de hollín puede deberse a la baja proporción C/H y al alto contenido de oxígeno de los combustibles mezclados. En conclusión, las mezclas de PO, diésel, n-butanol y 2-EHN pueden ser utilizadas como biocombustibles en aplicaciones de motores diésel.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Alternative fuels]]></kwd>
<kwd lng="en"><![CDATA[Pyrolysis oil]]></kwd>
<kwd lng="en"><![CDATA[N-butanol]]></kwd>
<kwd lng="en"><![CDATA[2-ethylhexyl nitrate]]></kwd>
<kwd lng="en"><![CDATA[Diesel engine]]></kwd>
<kwd lng="en"><![CDATA[Emissions]]></kwd>
<kwd lng="es"><![CDATA[Combustibles alternativos]]></kwd>
<kwd lng="es"><![CDATA[Aceite de pirólisis]]></kwd>
<kwd lng="es"><![CDATA[N-butanol]]></kwd>
<kwd lng="es"><![CDATA[Nitrato de 2-etilhexilo]]></kwd>
<kwd lng="es"><![CDATA[Motor diesel]]></kwd>
<kwd lng="es"><![CDATA[Emisiones]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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