Alcohol fuel

About: Alcohol fuel is a research topic. Over the lifetime, 2030 publications have been published within this topic receiving 42757 citations.

Water tolerance of gasoline-methanol blends

Abstract: A new method based on laser attenuation was devised to accurately measure the phase separation and, in turn, the water tolerance of gasoline-methanol blends with and without cosolvents. Water tolerances were quantified for a variety of blends in model and actual gasolines, as well as in major refinery streams - alkylate, FCC gasoline, and reformate - which make up commercial gasoline pools. Regression analysis of the data shows that the water tolerance behavior of blends with each cosolvent well-described by a correlation which includes cosolvent concentration, temperature, and base fuel hydrocarbon type.

Methanol-Unleaded Gasoline Blends Containing Fusel Oil Fraction as Spark Ignition Engine Fuel

Abstract: In the search for fuel alternatives for spark ignition engines, alcohol-gasoline blends draw considerable attention. For a successful application of gasoline-methanol mixtures as motor fuel, the realization of a stable homogeneous liquid phase is one of the major problems. In this work, phase separation problems of methanol-gaso-line mixtures, which were prepared by adding 15% methanol to unleaded gasoline, were solved by using a fusel oil fraction as the new blending agent. The stable fuel alternatives thus prepared were then tested for fuel properties and performance in the engine, and fuel alternatives for the spark ignition engines were proposed.

Modeling the combustion of light alcohols in si engines: a preliminary study

Abstract: The use of methanol and ethanol in internal combustion engines forms an interesting approach to decarbonizing transport and securing domestic energy supply. The physico-chemical properties of these fuels enable engines with increased performance and efficiency compared to their fossil fuel counterparts. The development of alcohol-fuelled engines has been mainly experimental up till now. The application of an engine cycle code valid for these fuels could help to unlock their full potential. For this reason, our research group decided to extend its in-house engine code to alcohols. This paper discusses the requirements for the construction of a two-zone thermodynamic model that can predict the power cycle, pollutant emissions and knock onset in alcohol engines. We reviewed the properties of alcohol fuels and their use in dedicated engine technology. From this information we identified the characteristics relevant to combustion engines and defined the areas the model should cover in terms of cylinder pressure, temperature, residual gas fraction, etc. Next, we investigated which building blocks of the current model will need adaptations. For the laminar burning velocity of alcohol-air mixtures, our literature review revealed a lack of data at engine-like conditions. Upon inspection of the pollutant formation models, we found that special attention should be paid to the formation of aldehydes and selected a suitable formation model. Finally we decided that a knock prediction model based on a one-step Arrhenius-type autoignition reaction is best suited for our purpose. Future work will further focus on each of these building blocks separately in order to come to a comprehensive model for the combustion of alcohols in spark-ignition engines.

Comparison of the effect of gasoline - ethanol E85 - butanol on the performance and emission characteristics of the engine Saab 9-5 2.3 l turbo.

Abstract: Due to the increasing environmental demands of the European Union for reducing emissions, it is necessary to utilize biofuels at the expense of the conventional fossil fuel BA95. Biofuels in spark-ignition engines usually use ethanol at a ratio of up to 85% to 15% of the conventional fuel BA95. Such a fuel is known as E85. Butanol also has very similar properties to ethanol. Ethanol is a higher alcohol. For comparison, ethanol and butanol fuels with conventional fuels were chosen for the vehicle Saab 9-5, turbo-charged 2.3l. This vehicle is completely adapted to operation on ethanol fuel (broad adaptation control unit, suitable sealing elements, fuel pump, etc.). The engine performance and emissions were monitored when operating on these fuels as compared to the conventional fuels BA95. It can be stated that the engine reached higher performance parameters when operating on ethanol and butanol fuels. This is due to the fact that the control unit increases the fuel supply during operation on biofuels (lower calorific value of fuel). There is no lean combustion and the possible damage to the engine during long-term operation. From the perspective of bootable showing, butanol fuel has worse parameters compared to ethanol fuel and conventional fuels.