Determinación del ciclo real de conducción de un autobús de servicio urbano en la Ciudad de Loja para la evaluación de consumo de energía

Abstract

In Ecuador, the different demographic zones influence the buses vehicle performance mainly due to the altitude variation that exists in all cities. The arrival of new vehicle models does not include the necessary information on energy consumption and pollutant emissions that emanate in different sectors. The objective of this technical project was to determine the real driving cycle of an urban service bus in Loja city through the analysis with minimum weighted differences to estimate the energy consumption, based on a direct method by chasing the bus; a suitable instrumentation was selected to simulate the way of driving the designated bus and collected necessary parameters such as: altitude, speed, longitude, latitude and rpm. Subsequently, a statistical evaluation was carried out by means of minimum weighted differences based on the energy consumption of the bus destined for a fixed route of Consortium of buses “Ciudad de Loja" contemplating urban and rural area of the city, which connects the users to their studies, jobs and social life. By means of this methodological analysis, the typical driving cycle of the established fixed route was obtained. A sample of 35 trips was made, selecting the average of all trips by means of weighted averages; this real driving cycle will help us in the homologation of vehicles entering the city. Concluding that the most demanding energy that has the driving cycle is to overcome the resistance to the slope with a value of 26,90 kWh, which represents 56,20%, this percentage is obtained by the geographical unevenness that exists in the city