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Purpose <p>In this research, the non-edible <i>Bassia scoparia</i> oil seed was introduced as the raw material for biodiesel production, and the effect of the resulting biodiesel on the performance characteristics of the diesel engine was investigated.</p> Methods <p>The required <i>Bassia scoparia</i> seeds were prepared, and after purification, oil extraction was done. The esterification step was performed in order to reduce the acid value. Then the physical and chemical characteristics of the produced biodiesel were measured. In order to investigate the evaluation of the produced biodiesel, an air-cooled single-cylinder engine was used. Performance tests were performed in order to influence engine rotation speed, load, and fuel composition on exhaust gas temperature, specific fuel consumption, and power by a Foucault flow dynamo. Tests were conducted at three rotational speed levels (1800, 2100, and 2400 rpm), five load levels (0, 25, 50, 75, and 100%), and five different ratios (B0, B5, B10, B15, and B20). In order to investigate the effect of independent variables on dependent variables, analysis of variance with a completely randomized experimental design was used in SPSS 22 software.</p> Results <p>The results showed that by changing the engine load, significant changes were observed in the temperature of the exhaust gases, but the changes in the biodiesel ratio had no effect on it. Regarding the specific fuel consumption, except for the load variable and the interaction of load and rotational speed, other variables and interactions did not have a significant effect on it, and the effect of changes in the biodiesel ratio on the engine power was not significant. By increasing the engine speed from 1800 to 2400 rpm at 25% load, the highest increase in exhaust gas temperature from 134 to 180 °C by 25.5% and the highest decrease in SFC from 6672 to 1497 g/kWh by 77.5% were observed in the B20 composition. The lowest power reduction was observed in the B20 by 11.5%. This trend was also observed at other loads.</p> Conclusion <p>These results are promising for the possibility of using biodiesel from <i>Bassia scoparia</i> oil seeds instead of diesel fuel in compression ignition engines.</p>

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Investigating the Effect of Biodiesel Extracted from Bassia scoparia Oilseeds on Exhaust Gas Temperature, SFC, and Power of Diesel Engine

  • 期刊论文

  • 发表日期：

    2025年10月29日

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  • Kiumars Daemi Milani,
  • Babak Beheshti,
  • Mohammad Ghahderijani

摘要

Purpose

In this research, the non-edible Bassia scoparia oil seed was introduced as the raw material for biodiesel production, and the effect of the resulting biodiesel on the performance characteristics of the diesel engine was investigated.

Methods

The required Bassia scoparia seeds were prepared, and after purification, oil extraction was done. The esterification step was performed in order to reduce the acid value. Then the physical and chemical characteristics of the produced biodiesel were measured. In order to investigate the evaluation of the produced biodiesel, an air-cooled single-cylinder engine was used. Performance tests were performed in order to influence engine rotation speed, load, and fuel composition on exhaust gas temperature, specific fuel consumption, and power by a Foucault flow dynamo. Tests were conducted at three rotational speed levels (1800, 2100, and 2400 rpm), five load levels (0, 25, 50, 75, and 100%), and five different ratios (B0, B5, B10, B15, and B20). In order to investigate the effect of independent variables on dependent variables, analysis of variance with a completely randomized experimental design was used in SPSS 22 software.

Results

The results showed that by changing the engine load, significant changes were observed in the temperature of the exhaust gases, but the changes in the biodiesel ratio had no effect on it. Regarding the specific fuel consumption, except for the load variable and the interaction of load and rotational speed, other variables and interactions did not have a significant effect on it, and the effect of changes in the biodiesel ratio on the engine power was not significant. By increasing the engine speed from 1800 to 2400 rpm at 25% load, the highest increase in exhaust gas temperature from 134 to 180 °C by 25.5% and the highest decrease in SFC from 6672 to 1497 g/kWh by 77.5% were observed in the B20 composition. The lowest power reduction was observed in the B20 by 11.5%. This trend was also observed at other loads.

Conclusion

These results are promising for the possibility of using biodiesel from Bassia scoparia oil seeds instead of diesel fuel in compression ignition engines.