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.
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Showing 1 to 13 of 13 for “"Diesel buses"”.
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Electrifying Straetó : how to make it happen
… the feasibility of converting the current diesel buses into an electric vehicle fleet. The study presents the analysis made to ten routes of the public system that operate in the Capital Area of the Country. Three different electric vehicle technologies were proposed to replace the current …
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Modeling Diesel Bus Fuel Consumption and Dynamically Optimizing Bus Scheduling Efficiency
There are currently very few models that estimate diesel and hybrid bus fuel consumption levels. Those that are available either require significant dynamometer data gathering to calibrate the model parameters and also produce a bang-bang control system (optimum control entails maximum throttle and …
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Analysis of particulate matter concentration and size distribution in heavy-duty vehicle exhaust emissions
… size distribution of the compressed natural gas buses tested was characterized by a bi-modal particle size distribution; the clean diesel buses had a uni-modal particle size distribution.;The heavy-duty diesel trucks exhibited the Count Median Diameter (CMD) values ranging from 30 nm to 60 nm. …
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Investigation of Emissions and Fuel Economy for the Integrated Bus Information System
… method was applied to multiple representative buses tested with different types of fuel and powertrain technologies, to acquire the emissions and fuel economy data on over 350 newly generated virtual cycles. In addition, emissions testing was conducted over selected virtual cycles and validated …
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Applying life cycle assessment to analyze the environmental sustainability of public transit modes for the City of Toronto
… specific transit modes are the best choice. Diesel buses are the clear best choice from 7-51 passengers, LRTs make the most sense from 201-427 passengers, and subways are the best choice above 918 passengers. There are a number of other passenger loading ranges where more than one transit …
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Battery-Electric-Bus Transit System Design
The increasing availability of battery-electric buses (e-buses) as a sustainable alternative for public transportation has sparked considerable interest in recent years. With a notable decrease in lithium-ion battery prices, e-buses have become a competitive option in terms of the total cost of …
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Equitable Bus Route Electrification Based on a Mixed Integer Linear Programming Approach
… riders and the highest levels of pollution from diesel buses. Assuming an optimal cost structure for the full transition to battery-electric buses, and also assuming that not all depots and routes will be electrified on the same time scale, we use Mixed Integer Linear Programming (MILP) methods …
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The significance of indoor:outdoor relationships, and physical and chemical composition in personal exposure to urban particulate matter
… situated in a road used by approximately 10,000 diesel buses each day, with 4 and 5 storey buildings along both sides of the road producing a small street canyon effect. Monitoring indoor and outdoor particulate concentrations inside one of these buildings for one year has shown that meteorology, …
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A Quantification Analysis on Potential Use of Recuperated Regenerative Braking Energy from NYCT Subways into Charging Electric Buses
… NYCT & MTA Bus have a joint fleet of 5700+ buses providing transportation services to the city by continuously operating on 238 local, 13 select bus service and 74 express bus routes within the five boroughs. Currently, this huge fleet has a combination of Compressed Natural Gas (CNG) buses, …
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Accelerating bus electrification : enabling a sustainable transition to low carbon transportation systems
… midcentury climate goals. While transit buses have a relatively small impact on greenhouse gas emissions, they have a larger impact on urban air quality, have commercially available in-service electric models, and have historically commercialized clean technologies that enabled deployment …
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Planning and Optimization of Charging Strategies for Electric Vehicles: From Infrastructure to Behavioral
… both publicly operated battery electric buses (BEBs) and privately owned EVs, is a pivotal step toward achieving sustainable and efficient urban mobility. This dissertation addresses critical dimensions of this transition, integrating advanced optimization methods with empirical …
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Evaluation of Exposures to Diesel Particulate Matter Utilizing Ambient Air Monitoring and Urinary Biomarkers Among Pedestrian Commuters who Cross the U.S.-Mexico Border at San Ysidro, CA.
… traffic-related air pollution, including diesel exhaust (DE). DE exposure has been associated with numerous adverse health effects, particularly cardiovascular and respiratory problems, including as lung cancer. Pedestrian crossers wait in line for extended periods and stand within 10 feet …
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Greenride herramienta tecnológica para la gestión del mantenimiento predictivo de emisiones en buses diésel en la terminal Salitre
… para la gestión del mantenimiento predictivo en buses diésel que operan en la Terminal de Transporte Salitre, con el fin de reducir sus emisiones contaminantes y mejorar la eficiencia operativa. Esta iniciativa surge como respuesta al grave problema de calidad del aire en Bogotá, especialmente en …