Abstract
In this study, the principal objective is to compare the performances of an air-cooled one cylinder, four-stroke direct injection diesel engine using the blends (5% by volume B5, 10% by volume B10) of diesel and biodiesels derived respectively from palm oil, castor oil and raphia sese De Wild oil with pure diesel. All the biodiesels used in this work come from the plant species of the democratic republic of Congo as listed above. The engine performances (power, torque and brake specific consumption) at different engine speeds were determined at both full and partial loads. According to experimental results, the increments in the power output and torque when the mixtures of diesel and biodiesels were used and were observed. On the other side, the specific fuel consumption of the mixtures is higher than that of pure diesel although the calculated lower heating values are almost within the same range for the all studied fuels. Finally, in partial load 1/1, pure diesel blended with biodiesels B5 derived from castor oil presented high specific brake consumption values compared to the other fuels while B10 from the same oil presents low brake specific consumption values for power greater than 3.2 kW.
Highlights
The energy accessibility is the first challenge of this century
This study aims to investigate the performances of a single-cylinder diesel engine using blends of diesel with biodiesels derived from palm oil, castor oil and raphia sese De Wild oil respectively with pure diesel
The results presented in the following figures are obtained from the average of the experimental data at each speed and for the full load and at constant speed for the partial load
Summary
The energy accessibility is the first challenge of this century. More forms of resources are used to produce energy. The environment pollution due to the usage of fossil fuels is the main problem that must be solved for these decades. Many scientists propose a diversification of the energy production by using raw vegetable materials that are renewable and sustainable [1] [2]. Biodiesel can be produced and used in the compression ignition engine in replacement of traditional diesel. We note that these fuels have similar physicochemical properties with the fossil fuels [3] [4]
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