Browsing by Subject "Electric automobiles -- Design and construction"
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Item Development of a hybrid electric vehicle(Texas Tech University, 1996-05) Aylor, Stephen ScottThis thesis describes the development of a hybrid electric vehicle from concept to completion. The vehicle described is Texas Tech's entry in the 1995 Chrysler Hybrid Electric Vehicle Challenge. The mechanical systems' design and modifications to a 1995 Dodge Neon Sedan is presented. The electrical system used to convert the vehicle to a hybrid electric vehicle (HEV) is documented. A design for the HEV system controller is discussed from a hardware and software perspective. A vehicle model developed from known vehicle parameters and dynamic testing is introduced to aid in further optimization of the vehicle. Results of dynamic testing with regards to fuel economy, vehicle range, and emissions productions are presented to illustrate the benefits of operating the vehicle as an HEV. Conclusions and recommendations for future work are discussed.Item Low voltage system design in fuel-cell powered vehicle(Texas Tech University, 2003-08) He, XiaolaiFuel cell vehicles have the potential of being highly efficient compared to current vehicles. Their higher efficiency results in lower fuel consumption and reduced emissions of gaseous pollutants and the greenhouse gas CO2. The system inside a fuel cell vehicle is complicated, which consists of several accessory subsystems to ensure its performance. The low voltage subsystem is important for providing electric energy for the operation of the other electric subsystems in a fuel cell vehicle. This thesis describes the use of a novel low voltage system to help running a homemade, student-developed fuel cell vehicle. First, the background of fuel cells and fuel cell powered vehicles is introduced. After that, the design of the low voltage system is demonstrated, which was central to conducting the reported thesis research. Dynamic testing results for investigating the working of low voltage components, such as sensors, actuators are presented, and the fuel cell working conditions during the vehicle running are studied. Finally, conclusions and recommendations for future work are provided.