Statistical Analysis of Diesel Engine Performance for Castor and Jatropha Biodiesel-Blended Fuel

Abstract

Vegetable oils and their methyl/ethyl esters are alternative renewable fuels for compression ignition engines. Asian countries are not self-sufficient in edible oil and are exploring non-edible seed oils, like jatropha and castor as biodiesel raw materials. In the present study jatropha and castor oil were used for the preparation of biodiesel by the transesterification process. Diesel and jatropha oil methyl ester (JOME) blends were used to conduct short-term engine performance tests at varying loads. Similar tests were conducted with castor oil methyl ester (COME). The engine parameters were recorded and compared for the prepared blends. The best engine operating condition based on lower brake specific fuel consumption and higher brake thermal efficiency were identified and compared. The maximum thermal efficiency was observed at 13% substitution of COME in diesel and 18% for JOME in diesel. An analysis of variance test was applied to the observed data for both the fuels. Results indicated for COME, F = 2.397, that there is no significant effect on fuel consumption with the fuel type. There is a significant effect on fuel consumption and thermal efficiency with % of load. For F = 5.69 there is a significant effect on thermal efficiency with the fuel type. Similar trends were observed with JOME blends. These trends indicated that blends in the ratio of 0-20% by volume of biodiesel can be added to neat diesel without any change in the hardware of the engine.

The Effect of Blending Ratio on Biodiesel Properties, Emissions and Engine Performance

“…An observable reduction in power was observed in WCO B5, but it was not observed in RSO B5. According to Vashist and Ahmad [12], the resultant engine power produced from various types of biodiesel blends is generally lower than that of petrodiesel due to the reduction in calorific value; see Figure 3(a). Although the reduction in engine power and torque is minimal at 2400 rpm for biodiesel blends B5 and (a) (b) journal.ump.edu.my/jceib ◄ B10, respectively.…”

“…For instance, Rahim et al [11] showed a negligible power reduction (ranging from 1.1 to 1.4%) in a diesel engine running on a 5% biodiesel blended fuel. Vashist and Ahmad [12] studied the performance of Jatropha and castor-seed-based biodiesel blends. They reported a minimum thermal power reduction at a blending ratio of 10%, but the power was markedly reduced at a 20% blending ratio.…”

Experimental studies on the performance and emission characteristics of a compression ignition engine fuelled with jatropha oil methyl ester

“…The jatropha can grow anywhere, suitable for all conditions. Based on the studies available it is the best substitute available at present to fossil fuel [15]. This paper presents experimental results of 100% JOME and 80%, 60%, 40% and also 20% JOME blends with diesel on the performance and emission characteristics of the engine.…”

Emission from a dual fuel operated diesel engine fuelled with Calophyllum Inophyllum biodiesel and producer gas

“…The International Energy Agency, estimated that by the end of 2030, the net energy consumption will increase by more than 55% [3][4][5]. The Energy Information Administration (EIA) of the United States predicted that net petroleum products utilisation and consumption will increase from around 86 million barrels per day to 110 million barrels per day by the end of 2035 [6,7]. Due to the rapid depletion in conventional fuels, the rising price of petroleum products and major current environmental issues have gathered momentum in finding out a substitute, an alternative source of energy, which can replace the current conventional fuel in the future.…”