Análise do consumo de energia, performance e da estabilidade de veículos articulados propulsionados com um dolly eletrificado

Abstract

Regarding the emission of greenhouse gases by economic activity, transportation is accounted for almost 25.8% of these emitted pollutants. Moreover, the majority part of these emissions is derived from vehicles powered with Internal Combustion Engines. To avoid future complications due to air contamination, e.g. global warming and health issues, most countries are proposing harder restrictions on vehicle emission standards. Therefore, the search for sustainable drive-trains is in the spotlight of today’s automotive industry agenda. Hybridization of conventional fossil fuel trucks using electrified dolly, appears as a candidate solution for the problem. This work’s objective was to determine the pros and cons of vehicles hybridized by the implementation of e-dollys and to compare them to conventional diesel trucks. Using simulation, this work evaluated the impact of the e-dolly technology on the dynamic stability, longitudinal performance and on the fuel consumption of these vehicles. Also, it was studied how the control unit of the hybrid truck would act in situations of dynamic instability. Simulation models used to evaluate the longitudinal and lateral dynamics of the vehicle were proposed together with the control algorithm of the propulsion system. The energy management strategy was based on an adaptive approach of the Equivalent Consumption Minimization Strategy. Finally, using the proposed simulation framework, it was found that vehicles equipped with an e-dolly have best fuel economy, best performance on gradeability, shorter transportation time and reduction in the frequency of gearshifts compared to a conventional truck.