College - Author 1
College of Engineering
Department - Author 1
Mechanical Engineering Department
Degree Name - Author 1
BS in Mechanical Engineering
College - Author 2
College of Engineering
Department - Author 2
Mechanical Engineering Department
Degree - Author 2
BS in Mechanical Engineering
College - Author 3
College of Engineering
Department - Author 3
Mechanical Engineering Department
Degree - Author 3
BS in Mechanical Engineering
Date
3-2020
Primary Advisor
Joseph Mello, College of Engineering, Mechanical Engineering Department
Abstract/Summary
The current Cal Poly Supermileage team has faced issues regarding the efficiency and durability of their SMV vehicle’s drivetrain. After conducting research to solve their current issues, we developed a final drivetrain configuration that will improve the performance and life of the vehicle. This report outlines some of the completed research including: a table of designs used by other teams, a table of patents that can be applied to our design, and a list of technical literature we can use to better our design. It also summarizes our goals and objectives, including a table of the engineering specifications of the drivetrain along with their target requirements and how we plan to achieve these targets. Also included, is the process we took to choose our final design starting with multiple different concepts and how we picked them, narrowing down the concepts to the best one by means of research and a decision matrix, choosing our final design, and analysis and risk factors. Based on this, we have chosen a single reduction chain driven drivetrain, very similar to the previous design, as our final design because it can result in the best efficiency while still being compatible with the other components of the drivetrain. We have decided to focus design on the rear hub and sprocket since they were the major factors in low efficiency and damage for the previous vehicle. We reverse engineered a hub as a base for our purpose-built hub, and we designed a new sprocket and axle. In this report, we cover how we produced the final design, manufactured the components, and tested design specifications to prove the viability of the design. Finally, future improvements and recommendations to improve the design for future iterations.
URL: https://digitalcommons.calpoly.edu/mesp/519