Abstract

LLANES-CEDENO, Edilberto Antonio et al. EVALUATION OF POLLUTANT EMISSIONS FROM DIESEL VEHICLES FUELED WITH BIODIESEL UNDER REAL-WORLD DRIVING CONDITIONS. Ingenius [online]. 2025, n.34, pp.61-74. ISSN 1390-860X.  https://doi.org/10.17163/ings.n34.2025.05.

This study evaluates the impact of B10 and B20 biodiesel blends produced from waste frying oil on pollutant emissions when used in diesel-powered vehicles operating under real-world driving conditions at high altitudes, ranging from 2619 to 2877 meters above sea level, in the Metropolitan District of Quito, Ecuador. Comparative tests were conducted using two diesel vehicles: one equipped with a common rail direct injection (CRDI) system, designated as M2.5C, and another with an injection pump system, referred to as H2.5B. Both vehicles were initially fueled with conventional diesel to establish a baseline. Exhaust emissions were measured under hot-engine conditions using a Portable Emissions Measurement System (PEMS) along a 15.7 km route that included ascending, descending, and urban driving segments. The findings indicate that carbon monoxide (CO) emissions were lowest when pure diesel was used in both engine types. Hydrocarbon (HC) emissions were minimal when B20 biodiesel was employed, regardless of the vehicle. Nitrogen oxide (NOx) emissions showed no significant differences across the fuels tested, and in urban driving conditions, NOx levels remained consistently stable.

Keywords : fuel consumption index; air conditioning; efficient driving; fuel; schedule; driving cycle..

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