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Simulative Analysis of Tire Influence on Energy Consumption and Driving Dynamics of an Electric Driven Vehicle
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Orientador(es)
Resumo(s)
EVs have increasingly become part of the mobility sector. However, these vehicles cannot
achieve the desirable autonomy due to reduced battery capacity. Other parameters that can increase or
reduce the vehicle's electrical consumption are their aerodynamics, and transmission system, among
others.
KIT has a battery-powered passenger vehicle (Mercedes Benz A-Class) that has already been
developed through other works, along with simulation models programmed in the IPG CarMaker
software.
In this dissertation, the vehicle simulation model was developed regarding the tire and chassis
model to investigate its influence on electrical energy consumption and driving dynamics. The
simulations were divided into three cases of study: dynamics of safety conducting, dynamic driving and
economic driving.
To assess safety during conduction, it was considered to analyse the influence of two active safety
systems: ABS and AEB. The first allows the wheels to not block during a braking, providing a smaller
braking distance and bypassing obstacles. The AEB monitors the road and if it detects an obstacle where
it is necessary to stop, but the driver doesn't do so, it stops autonomously.
The dynamic driving was tested with the ESP, whose purpose is to help the vehicle strengthen
the loss of traction on the road. And with the analyse of the steering wheel angle behaviour.
In last case of study, and within the tire sector and its different characteristics that could influence
vehicle consumption, the following factors were evaluated: tire pressure, 2.2 bar and 2.9 bar, the
coefficient of resistance, whose difference is obtained by choosing tires with different velocity ratings,
Q and H. Lastly, extra loads were defined that would influence the vertical force that is applied to the
wheels. These loads were considered in view of the occupancy of the vehicle only with the driver, in
another case, occupied with 4 users.
Descrição
Tese de mestrado, Engenharia da Energia e Ambiente, 2024, Universidade de Lisboa, Faculdade de Ciências
Palavras-chave
Carro Elétrico Perdas de Energia Pressão dos Pneus Resistência de Rolamento Bateria Teses de mestrado - 2024