Aplicación del software IVE para la estimación indirecta de emisiones contaminantes de fuentes móviles con motor de ciclo Otto y comparación de resultados con medición directa en ruta en el Distrito Metropolitano de Quito

Abstract

This document deals with the application of the IVE software for the indirect estimation of pollutant emissions from mobile sources with Otto cycle engine and comparison of results with direct measurement en route in the Metropolitan District of Quito. For the indirect estimation, we proceeded to quantify data of time, altitude and speed with a GPS, these values were adjusted with a data filtering program to generate the matrix file for the development of the IVE program, to later enter data of vehicular technology, atmospheric conditions, time and date of testing and thus obtain global pollutant emissions. The IVE software can be freely downloaded from the web. For the direct measurement three routes were developed: city cycle, road cycle, combined cycle in which an On Board measuring equipment was used, to collect pollutant emissions values en route, and an external tank to quantify the fuel consumption in each journey. As a result of the project, it was possible to determine the variation percentage of CO2 grams per kilometer between the manufacturer and the IVE program, obtaining an average difference of 70.4%, while the percentage of average variation between the manufacturer and en route was 47.3%, in addition the percentage of average variation between the IVE program and the route measurement was 28.5%. The percentage variation between the IVE software and the On Board measurement for the CO factor (g CO / km) where for the road cycle there is an average variation of 67.2%, for the combined cycle was 18, was also analyzed. 4% and for the city cycle was 36.8%. For the NOx factor (g NOx / km), an average variation of 446.9% was obtained for the road cycle, for the combined cycle it was 483.6% and for the city cycle it was 548.7%. Finally, for the factor HC (g HC / km), an average variation of 145.4% was presented for the road cycle, for the combined cycle it was 230.5% and for the city cycle was 592.8 %. Due to this, the empirical calculation of a referential correction factor was used so that IVE could adapt better to the real conditions of the city of Quito; with which it was evidenced that it is necessary to determine a real correction factor so that it is possible to use the IVE software without the need for experimentation.