Diseño de un circuito de conducción de emisiones real (RDE) según los parámetros-características de normativas internacionales para la Ciudad de Riobamba

Abstract

The current discrepancy between pollutant emission values reported in laboratory tests and those obtained during actual driving has led to the development of Real Driving Emissions (RDE) testing circuits, reflecting real-world driving conditions and their impact on pollutant emissions. This curriculum integration project aims to design an RDE testing circuit according to international regulatory parameters for Riobamba City in the Automotive Engineering field. The process begins with the finding of main traffic routes, proposing four alternatives to establish the RDE route. Data are collected on these routes by connecting an automotive diagnostic device called ELM 327 Wi-fi to the On-Board Diagnostics (OBD II) port. Seven repetitions are conducted with a Ford Escape vehicle during morning, noon, and evening hours. The collected data allow for the analysis of compliance with parameters outlined in the European Union (EU) regulation 2018/1832. Results indicate that the proposed route during the morning hours meets the major part of the regulation's requirements. The average duration of the route is 97.06 minutes, covering a distance of 56.28 kilometers, with proportions of 32.56%, 33.34%, and 34.10% for urban, rural, and highway zones, respectively. The route also complies with the trajectory dynamics, including values for the 95th percentile of speed, positive acceleration, and positive relative acceleration. The established RDE testing circuit was tailored to Riobamba city and satisfies most parameters outlined in regulation (EU) 2018/1832.