Date of Award

2018

Document Type

Campus Access Master's Report

Degree Name

Master of Science in Mechanical Engineering (MS)

Administrative Home Department

Department of Mechanical Engineering-Engineering Mechanics

Advisor 1

Bo Chen

Committee Member 1

Darrel L. Robinette

Committee Member 2

Mahdi Shahbakhti

Abstract

This work discusses the architecture of the second generation Chevrolet Volt as well as its components. It presents the development of offline optimal operating point maps for all the operating modes of the vehicle. It discusses the development of a novel term for defining the efficiency of the hybrid modes which was used as the cost function for the optimization. These maps were then used to create the best mode map for the hybrid modes and compared with the one from General Motors in one of their publications.

It also discusses the development of a real-time control strategy for mode selection if the predicted velocity for the next few seconds is known to the controller. The algorithm uses the OOP maps for simplifying the model predictive control problem and converting it into the best pathfinding problem. With the new mode selection algorithm, the results show that fuel consumption reductions are possible in both highway and urban drive cycles.

Available for download on Thursday, January 31, 2019

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