Desenvolvimento conceitual do sistema de transmissão para um protótipo baja SAE

Abstract

This study had the purpose to develop a drivetrain system to the Baja SAE prototype of the UTFPR team. Baja is an off-road vehicle designed and manufactured by students from several universities in Brazil and abroad, with the intent to participate the Society of Automotives Engineers competitions. The motivation to this project was the contradiction between the constant evolution of the UTFPR team in competitions, mainly in the dynamics events, and the constant problems related with the current drivetrain system (exposed roller chain). At first a bibliography review about the different transmissions systems was made, so that the characteristics of each system were known in-depth. After that the method proposed by Pahl & Beitz was used, with which several products combinations were conceived and evaluated, finally, the more appropriate solution was chosen to continue with designing. As result of the above step the two stage enclosured roller chain system was achieved. The final product has reduced mass, easy and low cost manufacturing, total insulation from debris, adequate lubrication and a greater distance between the system and the ground. These characteristics allow the vehicle to overpass obstacles encountered in the competition and increase its reliability.