The world's oil supply is being limited, attention has been directed to finding alternative sources of fuel for the engines. Bio-diesel is receiving increasing attention every day due to fuel properties and compatibility with diesel-based oil Of oil. Therefore, in this research, we study the prospects and opportunities of the methyl esters of castor oil as fuel in an automobile. The tests were carried out on a four-stroke single-cylinder, D.I. Diesel with Diesel and various mixtures of Bio-diesel. The results of the performance tests are compared with various biodiesel blends of castor oil with that of pure diesel. The result indicates that in the B80 mixture, the highest thermal brake performance and lower BSFC (specific brake fuel consumption), while for the B 60 mixture, the lower fuel consumption is obtained.
Intensive production and marketing of biodiesel from edible sources have raised some critical environmental concerns. In order to mitigate these environmental consequences, alternative oil-seeds are being investigated as a biodiesel feedstock. Ricinus communis L. is one of the most promising non-edible oleaginous crops, due to its high production and annual yield of seeds, as it can be grown on marginal lands and in semi-arid climate. However, few studies are available on their fuel-related properties in their pure form or as a blend with petro-diesel, many of which are due to their extremely high content of ricinoleic acid. In this study we investigated the specifications of ASTM D6751 and D7467 which are related to the fatty acid composition of pure castor methyl esters (B100) and their blending with petro-diesel in a proportion of 10% vol (B10). The kinematic viscosity and distillation temperature of B100 (15.17 mm 2 s -1 and 398.7 ° C, respectively) were the only two properties that did not meet the appropriate standard limits. In contrast, B10 complied with all specifications. However, ASTM D7467 requires pure biodiesel to meet the requirements of ASTM D6751. This may limit the use of a wide range of raw materials, including ricin, as an alternative fuel, especially due to the fact that in practice vehicles normally use low level blends of biodiesel and petro-diesel.