Projeto de um dinamômetro veicular de rolo para realização de testes em protótipos de eficiência energética

Abstract

This work consists of the development of a roller dynamometer for execution of tests in prototypes of energy efficiency of the team Pato a Jato. The equipment simulates different driving conditions for the vehicle through a charging system known as a magnetic brake, consisting of a conductor disk and an electromagnet that interact with each other, producing a braking torque on the axis of the device, through socalled induced currents of Foucalt inside the disc, created by the magnetic field of the electromagnet. Besides the load system, the dynamometer has two measuring instruments that allow to measure the parameters of angular velocity and torque in the shaft of the equipment, that can be converted through calculations in values of torque and power in the wheel of the prototype. In the calculation memo, the components have been sized so that the device assembly is ideal for use in team prototypes, with some extra design requirements such as easy transportability of the equipment. The main components dimensioned throughout the work were the traction roller, the aluminum disc, the cores, coils and support of the electromagnet, the structure and the dynamometer shaft.