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 20 of 30 for “"Light-duty vehicles"”.
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Future light-duty vehicles : predicting their fuel consumption and addressing their potential
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2000.
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Assessing the fuel Use and greenhouse gas emissions of future light-duty vehicles in Japan
… The fleet model shows that GHG emissions from light-duty vehicles are likely to decrease significantly due to anticipated decrease of vehicle kilometers traveled (VKT) from all the light-duty vehicles in Japan over the next several decades. This is because of several factors, such as the …
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The performance of IC engine and fuel cell hybrid propulsion systems in light duty vehicles
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2002.
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Techno-economic analysis of hydrogen, electric, and gasoline light-duty vehicles in three carbon tax scenarios
… show the real cost for the final consumer. Light-duty vehicles from the world's largest vehicle manufacturers: Toyota, Volkswagen, Honda, Hyundai, Chevrolet, Nissan, and tiny Tesla, from three continents are compared. Gasoline, hybrid, electric, and hydrogen-fueled powertrains performance …
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Putting policy in drive : coordinating measures to reduce fuel use and greenhouse gas emissions from U.S. light-duty vehicles
… reduce fuel use and greenhouse gas emissions in light-duty vehicles within the United States. Failures in the market for lower rates of fuel consumption necessitate government involvement. But efforts have been weakened by a controversial regulatory system, and the need for perverse incentives …
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The effects of driving style and vehicle performance on the real-world fuel consumption of U.S. light-duty vehicles
… for reducing the fuel consumption of existing vehicles are needed to decrease the petroleum consumption and greenhouse gas emissions of the U.S. light-duty vehicle fleet. One way to do this is through changes in driving style, specifically through reductions in driving aggressiveness. The role …
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Modelling the impact of policy incentives on CO2 emissions from passenger light duty vehicles in five major economies with a dynamic model of technological change
… rising greenhouse gas emissions from passenger light-duty vehicles (PLDVs). Policy incentives send a signal to consumers and car manufacturers to influence purchasing decisions and the adoption of low-emission vehicles. In this thesis, an innovative model formulation is developed to represent …
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Modeling Light Duty Vehicle Emissions Based on Instantaneous Speed and Acceleration Levels
… rate measurements (CO, HC, and NOx) for five light-duty vehicles (LDVs) and three light-duty trucks (LDTs) as a function of the vehicle's instantaneous speed and acceleration levels. The hybrid regression models predict hot stabilized vehicle fuel consumption and emission rates for LDVs and …
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Spatiotemporal lifecycle assessment of the light-duty vehicle fleet of United States
… solutions, such as electrification and light-weighting, to mitigate the emission burdens. However, it remains challenging to understand the actual emission payoff of these technologies, since the real-world driving context and characteristics vary greatly. The recent rapid growth of a …
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Supervisory Controls Strategy to Reduce Utility Factor Weighted Criteria Emissions for a Plug-In Hybrid Electric Vehicle
… due to current government regulation for light duty vehicles. Parallel-series plug in hybrid electric vehicles can have multiple strategies to balance emissions and fuel consumption. Common controls strategies in industry target fuel economy by using a large electric vehicle range, known …
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Evaluating Trends in Light-Duty Vehicle Technologies to Project Fuel Economy
Predicting the fuel economy of future light-duty vehicles provides insight into the expected greenhouse gas emissions, oil consumption, and operating costs in the transportation sector. Fuel economy is difficult to directly predict, however, due to the large number of vehicle characteristics that …
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Hydrogen infrastructure: resource evaluation and capacity modeling
… to better understand how a hydrogen system for light duty vehicles might operate, both hydrogen resource and capacity analysis and modeling is conducted. Specifically, an evaluation of leading near term production and distribution technologies is presented. A hydrogen system based on …
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Factor of two : halving the fuel consumption of new U.S. Automobiles by 2035
… the average fuel economy of new U.S. cars and light-trucks by model year 2035. To achieve this factor of two target, three technology options that are available and can be implemented on a large scale are evaluated: (1) channeling future vehicle technical efficiency improvements to reducing …
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Automaker technology strategy and the cost of complying with the corporate average fuel economy standards
… the cost of compliance with CAFE Standards for Light Duty Vehicles (LDVs). Automakers have two main strategies to close the gap between current new vehicle fuel economy and the fuel economy mandated by CAFE: (1) deployment of fuel saving technologies to improve the fuel economy of conventional …
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Design studies of infrastructural development for applications of hydrogen energy technologies
… greenhouse gas emissions standards proposed for light-duty vehicles for model years 2017-2025 has an increase of 44% in fuel economy and a reduction of 34% in GHG emissions. The use of alternative fuel vehicles and renewable energy sources are, therefore, inevitable toward achieving this goal. …
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The role of natural gas as a vehicle transportation fuel
… compete with comparable gasoline or diesel vehicles. This thesis finds that natural gas can play a useful but modest role as a vehicle fuel in the US, predominantly as CNG in high-mileage, light-duty fleet vehicles and in heavy-duty, short-haul fleet vehicles. For light-duty applications, …
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Ash impacts on gasoline particulate filter performance and service life
… of gasoline direct-injection (GDI) engines in light-duty vehicles (LDV). Separate new regulations that aim to reduce particulate emissions to address air pollution concerns are taking effect concurrent with greenhouse gas limitations in both jurisdictions. GDI engines are proven to create more …
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Preparation of catalyst coated membranes using screen printing
… demonstrated in transportation appliances from light-duty vehicles to buses and in portable appliances including laptops and cell phones. A key component of a PEFC is its platinum electrocatalyst. With an estimated 75% of the world’s platinum reserves and resources in South Africa, local …
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Fuel economy regulations and efficiency technology improvements in U.S. cars since 1975
Light-duty vehicles account for 43% of petroleum consumption and 23% of green- house gas emissions in the United States. Corporate Average Fuel Economy (CAFE) standards are the primary policy tool addressing petroleum consumption in the U.S., and are set to tighten substantially through 2025. In …
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Performance targets for electric vehicle batteries
Light-duty vehicle transportation accounted for 17.2% of US greenhouse gas emissions in 2012 [95]. An important strategy for reducing CO₂ emissions emitted by light-duty vehicles is to reduce per-mile CO₂ emissions. While one approach is to improve vehicle efficiency, greater reductions in …
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