Abstract
Biodiesel fuels play an important role in addressing issues such as food security and environmental pollution. Diesel oil fuel and biodiesel-diesel blends (including B5S, B10S, and B100S which are produced from the rubber seed oil by supercritical methods) are going to be examined in this study. Engine performance, emissions and combustion characteristics of diesel engine were studied. The results of this experimental research show that the oxygen content of biodiesel helps to improve combustion, reduce ignition delay and decrease a significant amount of smoke density emitted from the engine; however, improved combustion has resulted in a slight increase in the amount of NOx. The results from this study have made contribution to the development and use of biodiesel fuel.
Highlights
Biodiesel fuel is considered a renewable energy resource, and a tool to solve many other problems of people and society
The paper presents results of experimental research for assessment of net biodiesel, comparing blending biodiesel fuels produced by supercritical methods using rubber seeds oil with the diesel engine without any modification
The brake specific fuel consumption of biodiesel fuel is larger than diesel fuel at the same speed and load due to the lower high heating value and higher density of biodiesel fuel comparing to diesel fuel
Summary
Biodiesel fuel is considered a renewable energy resource, and a tool to solve many other problems of people and society. According to the forecast of the world, energy council fossil fuel resources will run out in the few decades. This has encouraged the researchers to try and find alternative fuel sources for fossil fuels, which would meet the emission standards. To solve this problem, many countries around the world have created different strategies how to develop renewable energy sources [1]. By the year 2020, there may be about one million hectares of rubber trees planted in Vietnam and the estimated annual availability of rubber seeds can reach to 200 thousand tons, which can yield about 20 thousand tons of rubber seed oil or more, if proper technologies are employed [4]
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