Abstract
Biofuel is a fuel made directly or indirectly from organic materials - biomass, consisting of two main sources from plants and animal waste, not from fossil sources such as oil, coal. At present, biofuels account for about 20% of global energy consumption. Particularly there are some countries, the use of biofuels is even bigger, such as Germany, Brazil, India ..., these are the leading countries in proving the availability and superiority of biofuels. Because fossil energy reserves are declining rapidly, as well as their use which has many consequences for habitat, bioenergy is an inevitable development for the future. Some typical types of biofuels that are widely known today include: bioethanol (bioetanol), biodiesel (biodiesel), green diesel (diesel), biological kerosene (biokerosen-or reactive fuel). biological forces), other biological alcohols (methanol, butanol), bio ether, biogas, syngas, solid biomass fuels. In fact, the two most important biofuels are bioetanol and biodiesel, because of the many properties they have: use for the two most common types of transport (gasoline and motor vehicles). Diesel engine has many properties similar to fossil fuels, but cleaner and cleaner; produced from abundant and renewable materials such as sugar, starch, animal and vegetable fats and oils. The paper presents the heating methods for the use of high-viscosity fuels for diesel engines.
Highlights
Environmental pollution and exhaustion of energy sources are issues that are of interest to every country in the world
The problem is how to reduce emissions to the lowest level and the energy used for renewable vehicles to replace fossil fuels [1]
The countries in the world today are interested in the issue of economic efficiency and environmental protection, so the general development trend of diesel fuel is to optimize from cetan number, to find ways
Summary
Environmental pollution and exhaustion of energy sources are issues that are of interest to every country in the world. - Specific gravity, viscosity and surface tension are an important attribute of the original bio-oil Increasing the length of the carbon chain increases the molecular mass, increasing the amount of Van der Waals forces so it increases the viscosity and vice versa These properties are critical to the quality of the fuel spray, they are inversely proportional to temperature [28]-[29]. The main drawback of the original bio-oil is 10 to 17 times higher viscosity than diesel fuel, which has a high density and high surface tension, resulting in poor evaporation, reaction of unsaturated hydrocarbon chains make oil susceptible to degradation. Some test results using the original bio-oil on diesel engines show the appearance of a deposits on a nozzle, degrade lubricating oil
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