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Showing 1 to 20 of 33 for “"Fuel blends"”.
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Controlled Oxidation Studies of Coal/Refuse Fuel Blends
A study of the controlled combustion of blends of biomass materials and coals was conducted. Crushed limestone was added to the blends as an absorbent for sulfur oxides. The samples were combusted in quartz-fiber crucibles in a forced air furnace. Combustion at different times and temperatures were …
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Predictive chemical kinetics for auto ignition of fuel blends
… to the prediction of auto ignition in fuel blends. At the molecular scale, quantum chemical methods can give kinetic coefficients with accuracy nearing those of experiments. Even when specific kinetic parameters are unavailable, rates can be evaluated by analogy to similar molecules. …
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Flight performance testing of ethanol/100LL fuel blends during cruise flight.
Aviation gasoline, 100LL, is the last fuel in the U.S. containing lead. Additionally, the cost of 100LL avgas now averages close to $4.64/gal. This combination will eventually require an operational transition within the general aviation (GA) community. A contract was awarded to the Baylor …
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The combustion and emissions performance of fuel blends in modern combustion systems
The combustion and emissions performance of fuel blends in modern combustion systems has been investigated with the intention of reducing emissions, improving efficiency and assessing the suitability of future automotive fuels. The combustion systems used in this study include Homogeneous Charge …
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Turbocharged engine operations using knock resistant fuel blends for engine efficiency improvements
… lowering efficiency is to use knock resistant fuels. Among them ethanol has gotten a large attention due to its renewable characteristics. About 13.3 billion gallons of ethanol were produced in 2012, and about 99 % of them are used as fuel added to gasoline. However, the optimal use of ethanol …
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An Investigation Of The Autoignition Of Power Generation Gas Turbine Fuel Blends Using A Design Of Experiments Approach
Natural gas has grown in popularity as a fuel for power generation gas turbines. However, changes in fuel composition are a topic of concern since fuel variability can have a great impact on the reliability and performance of the burner design. In particular, autoignition of the premixed fuel and …
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Fuel component effects on hydrocarbon emissions from a spark-ignition engine
A fuel component perturbation experiment was performed in order to determine the sensitivity of the engine-out emission levels of two olefins, 2-methylpropene (2MP) and 1,3-butadiene, to selected fuel components. In this experiment, a base fuel was perturbed with the following four major fuel …
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Combustion characteristics of synthetic gasoline in modern charge boosted GDI Engines
… to process economics to formulate commercial fuel blends that meet in-house fit-for-purpose requirements and the legislated fuel specifications in South Africa. In this study the potential for optimisation of a fuel blend using full boiling range synthetic blending components to enhance its …
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Low-Temperature Combustion in a Small-Bore High-Speed Direct Injection Optically Accessible Diesel Engine
Experiments with renewable bio-diesel fuels were conducted, too. Less luminous flame was observed for bio-diesel fuel blends showing a lower soot formation rate. The flame luminosity decreased faster for bio-diesel fuel indicating a faster soot oxidation rate. The increased NOx emissions of …
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A Study of Combustion Profiles of Co-Fired Coal/Biomass/Limestone Samples in a Fluidized Bed Combustor
… possibilities of co-firing different types of fuels in atmospheric fluidized bed combustion systems. The laboratory sized atmospheric fluidized bed combustor (AFBC) at Western Kentucky University was designed to serve as a highly flexible research and development facility to gain operating …
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Turbulent flame microstructure, dynamics, and thermoacoustic instability in swirl-stabilized premixed combustion : measurements, statistics, and analysis
… that can be generalized across different fuel blends. This work is predicated on the idea that self-excited combustion instability arises from the selective amplification of the noise inherent in a turbulent combustion system, and that the frequency-based response of the flame is a …
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Análise dos parâmetros de desempenho de um motor de ignição por centelha operando com gasolina ou etanol com adição de hidrogênio
… of the application of hydrogen as complementary fuel to gasoline and ethanol in a spark ignition engine, verifying the modifications of the engine performance parameters. In the research a numerical study was carried out, adopting a quasi-dimensional model for a combustion, simulating the engine …
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A Study of Greenhouse Gas Emissions and Performance of an Internal Combustion Engine Operating on Landfill Gas Blends as Fuel
… a missed opportunity to use the LFG as a working fuel. Yet, direct use of LFG in internal combustion (IC) engines is hindered by low and varying energy density of the fuel. Thus, further processing of a portion of the LFG to produce syngas, composed of hydrogen (H<sub>2</sub>) and carbon monoxide …
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Calibration and implementation of a functional global auto-ignition model
… model (FGAM) developed at the Sasol Advanced Fuels Laboratory (SAFL). During the development of the model, its performance had been validated against a detailed kinetic auto-ignition mechanism in regions of lean to stoichiometric air-fuel ratio for n-heptane, iso-octane, 1-hexene, toluene, …
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Study of Lean Blowout Limits and Effects of Near Blowout Oscillations on Flow Field and Heat Transfer on Gas Turbine Combustor
… focuses on burning natural gas as the gas fuel option for industrial systems. However, interest in utilizing additional options due to environmental regulations as well as concerns about energy security have motivated interest in using fuel gases that have blends of Methane, Propane, H2, …
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Investigation of alternative fuels for various applications: experimental and life cycle assessment studies
… and life cycle assessment (LCA) of alternative fuels and fuel blends, with the objective of assessing their environmental sustainability and combustion performance in a gasoline engine. The experimental component investigated the enrichment of conventional fuels (gasoline, propane, methane) and …
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The effect of alternative fuels and aftertreatment devices on measured mobile school bus emissions
… buses during mobile operating conditions. Four fuel blends and three aftertreatment devices were tested on three school bus engines.</p> <p>For all of the tests, exhaust gas emission measurements were made using a Sensors Semtech-D to measure CO, CO<sub>2</sub>, NO<sub>2</sub>, NO, …
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Development and assessment of integrated powering systems with alternative fuel choices for clean transportation
… presents novel engine systems using alternative fuels for aviation, rail, and marine transportation as follows: (i) alternative powering systems, such as fuel cells, on-board hydrogen production (ii) alternative fuel choices with hydrogen, methane, methanol, ethanol, and dimethyl ether; and (iii) …
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The Investigation of Combustion and Emissions of Jp8 Fuel in an Auxiliary Power Unit
The US Army Single Fuel Forward policy mandates that deployed vehicles must be able to operate with aviation fuel JP-8. It is for this reason that it is vital that an investigation into the impact of JP-8 on a diesel engine performance be conducted. The author investigated the injection, …
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Particulate matter emissions from a DISI engine under cold-fast-idle conditions for ethanol-gasoline blends
… engines with both reduced brake-specific fuel consumption and better emission control, engineers developed the Direct Injection Spark Ignition (DISI) engine. DISI engines combine the specific higher output of the spark ignition engine, with the better efficiency of the compression ignition …
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