<?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>2518-4431</journal-id>
<journal-title><![CDATA[Investigación & Desarrollo]]></journal-title>
<abbrev-journal-title><![CDATA[Inv. y Des.]]></abbrev-journal-title>
<issn>2518-4431</issn>
<publisher>
<publisher-name><![CDATA[UNIVERSIDAD PRIVADA BOLIVIANA]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2518-44312023000100093</article-id>
<article-id pub-id-type="doi">10.23881/idupbo.023.1-7i</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[ESTADO DEL ARTE SOBRE LA INFLUENCIA DE MEZCLAS ETANOL-GASOLINA EN EL DESEMPEÑO DE MOTORES DE COMBUSTION INTERNA]]></article-title>
<article-title xml:lang="en"><![CDATA[STATE-OF-THE-ART REVIEW OF ETHANOL-GASOLINE MIXTURES INFLUENCE ON PERFORMANCE CHARACTERISTICS IN INTERNAL COMBUSTION ENGINES]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Andia-Vargas]]></surname>
<given-names><![CDATA[Josué Mario]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Salinas-Rojas]]></surname>
<given-names><![CDATA[Marco]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Orellana Lafuente]]></surname>
<given-names><![CDATA[Renán]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Sempértegui-Tapia]]></surname>
<given-names><![CDATA[Daniel Felipe]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Privada Boliviana Centro de Investigaciones Ópticas y Energías (CIOE) ]]></institution>
<addr-line><![CDATA[Cochabamba ]]></addr-line>
<country>Bolivia</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2023</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2023</year>
</pub-date>
<volume>23</volume>
<numero>1</numero>
<fpage>93</fpage>
<lpage>106</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.bo/scielo.php?script=sci_arttext&amp;pid=S2518-44312023000100093&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.bo/scielo.php?script=sci_abstract&amp;pid=S2518-44312023000100093&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.bo/scielo.php?script=sci_pdf&amp;pid=S2518-44312023000100093&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN Actualmente, la matriz energética en Bolivia depende en gran medida de los combustibles fósiles, hecho que conlleva a problemas económicos especialmente considerando que la producción de gasolina en Bolivia no cubre la demanda del mercado interno y que se tiene que recurrir a la importación a precios elevados. Además, la transición hacia una matriz energética más limpia también puede impulsar la innovación y desarrollo de nuevas tecnologías y soluciones para abordar el cambio climático y proteger el medio ambiente, aspectos que son promovidos por las Naciones Unidas con los Objetivos de Desarrollo Sostenible 7 y 11. En este sentido, este trabajo se centra en el estado del arte de la influencia de mezclas etanol-gasolina en el desempeño de motores de combustión interna, con el objetivo de tener un punto de partida para un posible uso de estas mezclas en el país y así reducir el consumo de gasolina. Inicialmente, se realizó un estudio de las propiedades fisicoquímicas de diferentes mezclas de combustible gasolina-etanol encontrados en la literatura. Después, se analizó el efecto del porcentaje de etanol en la mezcla en parámetros que definen el desempeño de un motor como: la eficiencia térmica, el consumo especifico de combustible al freno, la máxima torsión de frenado y el consumo especifico de combustible. Finalmente, se realizó un análisis exhaustivo de la literatura concerniente a efectos de la mezcla etanol-gasolina en el impacto al medio ambiente y efectos negativos al motor.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT Currently, the energy matrix in Bolivia relies heavily on fossil fuels, a fact that leads to economic problems especially considering that gasoline production in Bolivia does not meet the demand of the domestic market and the country has to import gasoline at high prices. In addition, the transition to a cleaner energy matrix can also drive innovation and development of new technologies and solutions to address climate change and protect the environment, aspects that are encouraged by the United Nations with Sustainable Development Goals 7 and 11. In this sense, this work focuses on the state-of-the-art review on the influence of ethanol-gasoline blends on the performance of internal combustion engines, with the objective of having a starting point for a possible use of these blends in the country and thus reduce gasoline consumption. Initially, a study of the thermochemical properties of different gasoline-ethanol fuel blends found in the literature was carried out. Then, the effect of the percentage of ethanol in the blend on parameters that define the performance of an engine such as: thermal efficiency, specific fuel consumption at braking, maximum braking torque and specific fuel consumption was analyzed. Finally, an analysis of the literature concerning the effects of the ethanol-gasoline blend on the environment impact and negative effects on the engine was carried out.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Etanol]]></kwd>
<kwd lng="es"><![CDATA[Combustible]]></kwd>
<kwd lng="es"><![CDATA[Motor de combustión interna]]></kwd>
<kwd lng="es"><![CDATA[Poder Calorífico]]></kwd>
<kwd lng="es"><![CDATA[Octanaje]]></kwd>
<kwd lng="es"><![CDATA[Eficiencia]]></kwd>
<kwd lng="en"><![CDATA[Ethanol]]></kwd>
<kwd lng="en"><![CDATA[Fuel]]></kwd>
<kwd lng="en"><![CDATA[Spark Ignition Engine]]></kwd>
<kwd lng="en"><![CDATA[Calorific value]]></kwd>
<kwd lng="en"><![CDATA[Octane rating]]></kwd>
<kwd lng="en"><![CDATA[Efficiency]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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