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This study evaluates the effects of blending (DEE) with a 20% GABME biodiesel blend (GABME20) on the performance and emission characteristics of a CI engine. At full load (5.2 kW), diesel achieved the highest (BTE) of 31.4%, while GABME20 showed a lower BTE of 28.5%. The addition of DEE improved the BTE progressively to 29.9%, 30.5%, and 30.8% for blends with 10%, 15%, and 20% DEE, respectively. BSFC decreased correspondingly from 0.310 kg/kWh for GABME20 to 0.288 kg/kWh with 20% DEE, nearing diesel’s value of 0.280 kg/kWh. Emission analysis exposed reductions in CO from 0.12% for diesel to 0.072% for GABME20 with 20% DEE, and HC decreased from 48 ppm to 34.4 ppm for the same fuels at full load. Smoke opacity was also reduced from 32% for diesel to 22.4% for the GABME20 + 20% DEE blend. However, NOx emissions improved from 868 ppm diesel to 1029.6 ppm for the highest DEE blend. These results suggest that DEE effectively improves combustion efficiency and reduces most emissions while slightly increasing NOx, indicating its potential as a biodiesel additive for cleaner engine operation.

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Effect of Diethyl Ether (DEE) Blending on the Performance and Emissions of GABME20 in CI Engines

  • 会议论文

  • 发表日期：

    2026年

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  • C. S. Abdul Favas,
  • M. Ramarao,
  • Prakash Sekar

摘要

This study evaluates the effects of blending (DEE) with a 20% GABME biodiesel blend (GABME20) on the performance and emission characteristics of a CI engine. At full load (5.2 kW), diesel achieved the highest (BTE) of 31.4%, while GABME20 showed a lower BTE of 28.5%. The addition of DEE improved the BTE progressively to 29.9%, 30.5%, and 30.8% for blends with 10%, 15%, and 20% DEE, respectively. BSFC decreased correspondingly from 0.310 kg/kWh for GABME20 to 0.288 kg/kWh with 20% DEE, nearing diesel’s value of 0.280 kg/kWh. Emission analysis exposed reductions in CO from 0.12% for diesel to 0.072% for GABME20 with 20% DEE, and HC decreased from 48 ppm to 34.4 ppm for the same fuels at full load. Smoke opacity was also reduced from 32% for diesel to 22.4% for the GABME20 + 20% DEE blend. However, NOx emissions improved from 868 ppm diesel to 1029.6 ppm for the highest DEE blend. These results suggest that DEE effectively improves combustion efficiency and reduces most emissions while slightly increasing NOx, indicating its potential as a biodiesel additive for cleaner engine operation.