Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 63 for “"Vehicle fleet"”.
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Electric Vehicle Fleet Charging Management
… infrastructure advancements, managing electric vehicle (EV) charging remains complex, especially compared to traditional vehicles. The disparity between demand and availability, alongside limited charging windows, poses challenges, notably for vehicle fleets. Charging-as-a-Service (CaaS) emerges …
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Dynamic incentive scheme for rental vehicle fleet management
… transportation in urban settings with a fleet of electric vehicles. Usage scenarios prpopsed by Mobility on Demand systems must allow one-way rentals. However, one-way rentals bring significant challenges to fleet management because areas of high demand will tend to lose their inventory, …
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Multi-agent Spatiotemporal Simulation of Autonomous Vehicle Fleet Operation
Autonomous vehicle fleets, consisting of self-driving vehicles, are at the forefront of transportation innovation. The appearance of autonomous vehicles (AVs) provides a new solution for traffic problems and a new market for transportation network companies such as DiDi and Uber. Conducting …
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Investigating Environmentally Sustainable Pathways for Passenger Vehicle Fleet in the UK
… 26% of total GHG emissions, of which light duty vehicles represent >50%. Battery electric vehicles (BEVs) are seen as a pathway to achieve decarbonisation and improved local air quality of future transport at the point of use. However, there are environmental concerns about the production of BEVs …
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Spatiotemporal lifecycle assessment of the light-duty vehicle fleet of United States
… the environmental targets for the light-duty vehicle fleets? 2) How do the emerging ride-hailing services influence the carbon footprints of light-duty vehicles? This thesis presents my work on the first regionally explicit (county-level) lifecycle assessment of two technologies directed at …
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Electric powertrains : opportunities and challenges in the US light-duty vehicle fleet
… and greenhouse gas (GHG) emissions of in-use vehicles. This study quantifies the potential of electric and hybrid-electric powertrains, such as gasoline hybrid-electric vehicles (HEVs), plug-in hybrid vehicles (PHEVs), fuel-cell vehicles (FCVs), and battery-electric vehicles (BEVs), to offer …
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Exploring the use of a higher octane gasoline for the U.S. light-duty vehicle fleet
… ratios and boost levels. In turn, engine and vehicle efficiencies are improved thus reducing fuel consumption and greenhouse gas (GHG) emissions for the light-duty vehicle (LDV) fleet. The main objective of this thesis is to quantify the reduction in fuel consumption and GHG emissions that can …
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Evaluating the impact of advanced vehicle and fuel technologies in U.S. light duty vehicle fleet
… increase in oil use by the U.S. light-duty vehicle (LDV) fleet presents an extremely challenging energy and environmental problem. A variety of propulsion technologies and fuels have the promise to reduce petroleum use and greenhouse gas (GHG) emissions from motor vehicles. Previous work in …
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Assessing deployment strategies for ethanol and flex fuel vehicles in the U.S. light-duty vehicle fleet
Within the next 3-7 years the US light duty fleet and fuel supply will encounter what is commonly referred to as the "blend wall". This phenomenon describes the situation when more ethanol production has been mandated than can be blended legally in the existing gasoline fuel supply. While there are …
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Potential for reducing fuel consumption and greenhouse gas emissions from the U.S. light-duty vehicle fleet
… transportation sector emissions. Building upon a vehicle technology assessment conducted at MIT ("On the Road in 2020", Weiss et al., 2000), this study assesses the potential for reducing the U.S. light duty vehicle fleet fuel consumption and energy use. The vehicles technologies considered are an …
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Potential of electric propulsion systems to reduce petroleum use and greenhouse gas emissions in the U.S. light-duty vehicle fleet
… Within transportation sector, light duty vehicles (LDVs) - cars, light trucks and SUVs - currently emit the most GHGs. Hybrid technology emerged as a promising option to address several of these challenges. A modern hybrid electric vehicle (HEV) offers significantly better fuel economy …
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Combinations of policy measures with a high potential for reducing the fuel consumption of the U.S. light-duty vehicle fleet
… in terms of both fuel efficiency and individual vehicle fuel economy in the past two decades, the overall fuel consumption of the U.S. light-duty vehicle fleet continues to grow. Although concerns about the effect of emissions from the vehicles and a significant reliance on imported oil provide …
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Analysis of The Key Parameters in Pedestrian Safety Assessment for the European Vehicle Fleet Using Multibody and Finite Element Mathematical Models
Esta tesis investiga cuales son los parámetros más críticos que condicionan los resultados que obtienen en los ensayos de protección de peatones la flota Europea de vehículos, según la reglamentación europea de protección de peatones de 2003 (Directiva CE 2003/102) y el posterior Reglamento de 2009 …
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Transitioning to a Greener Fleet: A Cost-Benefit Analysis of a Vehicle Fleet Program at the Texas General Land Office in Austin, Texas
… will provide background information on hybrid vehicles and alternative fuels their effect on the environment and the benefit these technologies can have on state and local fleets. Finally, the study will apply the technique of cost-benefit analysis of incorporating hybrid vehicles into the …
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Light electric freight vehicles in last-mile delivery
… sector is the use of light electric freight vehicles (LEFV) in urban and suburban areas as a sustainable and cheaper solution for last-mile delivery. Limited research has been performed regarding the impact of LEFV on distribution cost and network design. This thesis introduces a two echelon …
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Cars on a diet : the material and energy impacts of passenger vehicle weight reduction in the U.S.
Vehicle weight reduction is a known strategy to address growing concerns about greenhouse gas emissions and fuel use by passenger vehicles. We find that every 10% reduction in vehicle weight can cut fuel consumption by about 7%. In the U.S., vehicle weight reduction is essential for meeting future, …
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A Techno-Economic Investigation of Advanced Vehicle Technologies and Their Impacts on Fuel Economy, Emissions, and the Future Fleet
… central purpose of this work is to investigate vehicle technologies that contribute to fuel and emissions reductions while preserving consumer choice, and to evaluate their technological performance and economic practicability as essential aspects of meeting aspirational targets and regulatory …
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Driving change : evaluating strategies to control automotive energy demand growth in China
As the number of vehicles in China has relentlessly grown in the past decade, the energy demand, fuel demand and greenhouse gas emissions associated with these vehicles have kept pace. This thesis presents a model to project future energy demand, fuel demand and carbon dioxide emissions for the …
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Identifying the optimal highway driving conditions for the integration of manned and autonomous vehicles
… the effect that the implementation of autonomous vehicles may have on the vehicle fleet through the design of a simulator in MATLAB that models human-driven and autonomous vehicles. The manned vehicle model, consisting of aggressive, normal, and cautious drivers, utilizes many of the same …
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Guardrail Height Safety Requirements Given Recent Crash History and Evolution of Vehicle Design
… a critical last line of defense in preventing vehicles from leaving the roadway and impacting potential hazards. As vehicles are ever changing, it is necessary for guardrail design to adapt in response. Many contemporary vehicles such as sport utility vehicles and light trucks have higher …
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