AVALIAÇÃO DO DESEMPENHO ENERGÉTICO E AMBIENTAL DE TECNOLOGIAS ALTERNATIVAS DE VEÍCULOS A PARTIR DA CRIAÇÃO DE PERFIS DE VELOCIDADE REPRESENTATIVOS

João David Monteiro Nunes

Key information

Authors:

João David Monteiro Nunes (João David Monteiro Nunes)

Supervisors:

Gonçalo Nuno de Oliveira Duarte (Gonçalo Nuno de Oliveira Duarte); Patrícia De Carvalho Baptista (Patrícia De Carvalho Baptista)

Published in

December 14, 2021

Abstract

With the growing concern and awareness towards the environmental problems associated with climate change, an energy transition is inevitable. This work aims at evaluating the energy and environmental performance of different vehicle propulsion technologies in real routes through the creation of velocity profiles of that specific route. The information given by the Google Maps and OpenStreetMap APIs is used to build the speed profile on that specific route, considering 3 different driving styles – eco, normal and aggressive. The simulated vehicle dynamics were validated by comparing the dynamic parameters of the real profiles in that same route and it was concluded that there was a good enough match between both (deviation inferior to 3% for the average acceleration). After the creation of the speed profile, it is possible to estimate the energetic and environmental performance of the different technologies using the Vehicle Specific Power (VSP) methodology. The results show that the type of route affects the energy consumption (at about 25% in Diesel vehicles and 20% in electric vehicles) as does the driving style (25% increase in average from eco to aggressive driving with the difference increasing for electric vehicles). In terms of vehicle technology, the energy consumption of an electric vehicle is 43%, 46.5% and 52% lower than the Diesel vehicle energy consumption for a hilly, urban and extra-urban route respectively.