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 38 for “"CNG"”.
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Development of a CNG intensifier for high pressures
A CNG intensifier has been designed to compress natural gas from a variable, elevated-pressure storage source (20 - 200 bar) to a constant high discharge pressure (200 bar). The intensifier delivers variable amounts of gaseous fuel (5 - 43 kg/hr) at a maximum required pressure ratio of 10:1 for …
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System considerations in converting sugar mill waste to Bio-CNG
Sugar mills produce a range of by-products during the sugar extraction process. Bagasse, press-mud (also known as filter cake or mill mud), molasses and alcohol by-products are commonly used for various purposes. Specifically, press-mud, one of the by-products is produced in significant volume. …
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Emission Measurement of Air Pollutants from CNG-gasoline Bi-fuel Vehicles
… the vehicles using gasoline or compressed NG (CNG) as fuel.
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Knock phenomenon analysis on a diesel-CNG dual fuel engine using experimental fuel ratio
… is crucial to establish a proper Diesel-CNG Dual Fuel (DDF) engine. The causes of this phenomenon are still vague due to the lack of knock detection and characterization methods available. This study presents a knock characterization technique using a statistical analysis based on engine …
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Diesel-cng dual fuel combustion characterization using vibro-acoustic analysis and response surface methodology
… process from any diesel vehicle to a diesel-CNG dual fuel system requires additional fuel management. The need for an engine monitoring is vital to ensure the dual fuel operation run smoothly without excessive knocking, which may shorten the life of the engine. Knock and air-fuel ratio (AFR) …
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A finite element approach for the implementation of magnetostrictive material terfenol-D in automotive CNG fuel injection actuation
… solenoid fuel injection system. A prototype CNG fuel injector assembly was designed, which primarily included magnetostrictive material Terfenol-D as the actuator material, 1020 Steel having soft magnetic properties as the injector housing material, AWG copper wire as the coil material and …
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The role of natural gas as a vehicle transportation fuel
… use natural gas, as compressed natural gas (CNG) or liquefied natural gas (LNG), in the transportation sector. The thesis focuses on identifying opportunities to reduce market barriers in order to make the US natural gas vehicle market more efficient. We also identify vehicle market segments …
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Structural Insights into Ion Selectivity and Calcium Blockage in Cyclic Nucleotide Gated Channels
Cyclic nucleotides-gated (CNG) channels play an essential role in the visual and olfactory sensory systems and are ubiquitously expressed in a variety of neuronal and non neuronal cells. Details of their underlying ion selectivity properties are still not fully understood and a matter of debate in …
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Combustion quality and regimes for standard and alternative fuels
… natural gas. Dual-fuel Compressed Natural Gas (CNG)/diesel combustion in compression ignition (CI) engines has shown the ability to substantially reduce the NOx emission and at the same time produce very low particulate matter (PM) emissions. In this study, CNG/diesel dual-fuel combustion has …
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CONTRIBUIÇÕES DO PROCESSO DE HARMONIZAÇÃO DA REGULAMENTAÇÃO DE GÁS NATURAL VEICULAR NO MERCOSUL
… of harmonization of regulations for the use of CNG in the MERCOSUR. This work aims to analyze the effect of the harmonization process of regulations and the approach to removing technical and economic integration in this area. This study addressed the evolution and development of CNG in Brazil …
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Study of natural gas vehicles (NGV) during the fast fill process
… to better understand the characteristics of CNG during the fill process. Useful characteristics of CNG during the fill process are temperature, pressure, and flow rate, as well as, total volume dispensed. CNG is dispensed to an NGV through a process known as the fast fill process, since it is …
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One-dimensional simulation of a retrofitted medium duty engine running using compressed natural gas
… (C.I.) engine is the compressed natural gas (CNG). For C.I. engines to operate using CNG, or to be converted as a retrofitted CNG engine, further modifications are required. Previous works reported loss in brake power (BP) and increase in hydrocarbon (HC) emission for C.I. engine retrofitted …
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Economic implications of natural gas vehicle technology in U.S. private automobile transportation
… do so, I add a dedicated compressed natural gas (CNG) vehicle option to the Emissions Prediction and Policy Analysis (EPPA) Model as an option to the conventional internal combustion engine (ICE) vehicle. The model projects changing prices of fuel and other goods over time, given specification of …
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