Automotive Gasoline
Mostrando 1-12 de 12 artigos, teses e dissertações.
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1. Introdução de misturas de GNV e hidrogênio (Hidrano) em veículos convencionais no Brasil e seus impactos econômicos, ambientais e energéticos / Introduction of CNG and hydrogen (HCNG) for conventional vehicles and its economic, environmental and energy impacts
Several strategies have been proposed to introduce hydrogen in the economy specifically in the transport sector in order to reduce environmental impacts of conventional fuels. One of the strategies implies in adding hydrogen to compressed natural gas (HCNG), making use of the existing refueling stations and natural gas fleet. Thus the costs and time for the
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 30/07/2012
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2. Modelos estatísticos integrados à metodologia Lean Seis Sigma visando ao aumento da produtividade na obtenção do etanol / Statistical models integrated with Lean Six Sigma methodology in order to increase productivity in obtain of ethanol
The sugarcane is one of the most important economic businesses in Brazil, in both terms of trade balance and job opportunity. Alcohol (ethanol), obtained from sugarcane, is a fuel cleaner, because it contains oxygen in its composition and is used in vehicles powered by ethanol, on the composition of automotive gasoline and ex-fuel vehicles. Ethanol burning p
Publicado em: 2010
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3. Determinação de benzeno, tolueno, etilbenzeno e xilenos em gasolina comercializada nos postos do estado do Piauí
Automotive gasoline consists of a complex mixture of flammable and volatile hydrocarbons derived from crude oil with carbon numbers within the range of 4-12 and boiling points range of 30-225 ºC. Its composition varies with the kind of crude oil and the type of refinery process that they undergone. Aromatics hydrocarbons, in particular benzene, toluene, eth
Química Nova. Publicado em: 2009
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4. Uso de ATR/FTIR e FTNIR associado a técnicas quimiométricas para quantificação de aditivos em gasolina automotiva
Formation of deposits is a very common problem in vehicles due to the formation of gum and sludge by burning fuel inside the engine. Additives detergent / dispersants are designed to reduce the influence of these agents in the proper functioning of automotive vehicles. These components are polymeric amine matrix added in the fuel distributor at the concentra
Publicado em: 2009
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5. Estudo comparativo das emissões de aldeídos originados pelo veículo à diesel com o uso do óleo diesel comercial, biodiesel e suas misturas / Comparative study of aldehyde emissions generated by Diesel vehicles using of commercial diesel fuel, biodiesel and their mixtures
Since of the automotive diesel fuel contains 2% biodiesel and there exists no regulation of emissions of aldehydes of Diesel cycle vehicles, this paper aims to evaluate the emissions of aldehydes of such a category of vehicles, using diesel oil with 2% biodiesel (B2) and 100% soybean biodiesel (B100) as fuel. It also aims to evaluate the emissions of aldehyd
Publicado em: 2009
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6. Capacitive microsensor for evaluation of the quality of automotive fuels. / Micro-sensor capacitivo para avaliação da qualidade de combustíveis automotivos.
This work proposes a capacitive sensor with interdigitated electrodes in order to evaluate the quality of automotive fuel. Interdigitated electrodes have some interesting features for this type of sensor. Among them, they increase the capacitance by having several capacitors in parallel, and by having a structure feasible to be manufactured by conventional m
Publicado em: 2008
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7. Caracterização do resíduo sólido formado em motor automotivo à gasolina por meio de técnicas analíticas / CHARACTERIZATION OF SOLID DEPOSIT FORMED IN AUTOMOTIVE GASOLINE ENGINE BY THE ANALYTICAL TECHNIQUES
The main issues for solid deposit in engine are: high temperature that causes oil oxidation, bad quality fuel, dilution of fuel and combustion gases, low engine oil quality (recouped) and the engine oil not changed, but only completed up to the level required. The deposit is formed by a reaction to oxidation and heat (above 50- 60oC) can catalyze the process
Publicado em: 2008
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8. UTILIZAÇÃO DE Microsternarchus bilineatus (OSTARIOPHYSI, GYMNOTIFORMES, HYPOPOMIDAE) COMO BIOMONITOR: O EFEITO DE COMBUSTÍVEIS AUTOMOTIVOS DERIVADOS DO PETRÓLEO NA DESCARGA DO ÓRGÃO ELÉTRICO
This study evaluated the effect of automotive fuel (gasoline and diesel) on the Electric Organ Discharge (EOD) frequency of Microsternarchus bilineatus (Ostariophysi, Gymnotiform), with the objective of testing the viability of this species as a biomonitor to detect pollutant derived from petroleum. Ten individuals of the species were exposed to concentratio
Publicado em: 2008
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9. Metodologia experimental para a maximização do desempenho de um motor multicombustível turboalimentado sem prejuízo à eficiência energética global
The new trends of the automotive market require the development of a new concept of engines using different types of fuel, mainly those resulting from alternative sources of energy. Moreover, the multifuel engines available in the market display only one volumetric compression ratio, which leaves space for the development of systems that allow for different
Publicado em: 2006
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10. The use of Generalized Two-Dimensional FT-Raman Correlation Spectroscopy method to monitor the quality of automotive gasoline. / Qualidade de gasolinas automotivas através de Espectroscopia Vibracional FT-Raman, combinada com correlação 2D generalizada.
Relata a utilização da espectroscopia FT-Raman combinada com Correlação 2D Generalizada como método alternativo para a realização do controle de qualidade de Gasolinas automotivas diretamente nos postos de combustível. Apresenta os procedimentos para identificar a adulteração da Gasolina automotiva pela adição irregular de Etanol, Metanol e compo
Publicado em: 2005
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11. Study of the effects of the addition of solvents in the physico-chemical parameters that characterize gasoline quality / Estudo do efeito da adição de solventes nos parâmetros físico-químicos que caracterizam a qualidade da gasolina automotiva
The effects of the addition of solvents in the quality of automotive gasoline verified in the physico-chemical parameters were studied in this work; through a distillation curve and an infrared analytical procedure to determine the octane number. The solvents tested were oil diesel, kerosene, turpentine spirit, thinner, rafinado and methanol. The analysis co
Publicado em: 2002
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12. REDES NEURAIS E REGRESSÃO DINÂMICA: UM MODELO HÍBRIDO PARA PREVISÃO DE CURTO PRAZO DA DEMANDA DE GASOLINA AUTOMOTIVA NO BRASIL / NEURAL NETWORK AND DYNAMIC REGRESSION: A HYBRID MODEL TO FORECAST THE SHORT TERM DEMAND OF PETROL IN BRAZIL
In this dissertation a short term model to forecast automotive gasoline demand in Brazil is proposed. From the methodology point of view, data is analyzed and a model using a bottom-up strategy is developed. In other words, a simple model is improved step by step until a proper model that sits well the reality is found. Departuring from a univariate model it
Publicado em: 2000