Experimental Investigation of the impact of boron nanoparticles and CNG on performance and emissions of Heavy-Duty diesel engines

Kul V. S., AKANSU S. O.

FUEL, cilt.324, 2022 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 324
  • Basım Tarihi: 2022
  • Doi Numarası: 10.1016/j.fuel.2022.124470
  • Dergi Adı: FUEL
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, PASCAL, Aerospace Database, Biotechnology Research Abstracts, Chemical Abstracts Core, Communication Abstracts, INSPEC, Metadex, Pollution Abstracts, Civil Engineering Abstracts
  • Anahtar Kelimeler: Diesel, CNG, Dual Fuel, Boron, Nanoparticle, Emission, Performance, NATURAL-GAS, FUEL, COMBUSTION, HYDROGEN
  • Erciyes Üniversitesi Adresli: Evet

Özet

In the present study, a six cylinder heavy-duty type engine with 11,670 cc cylinder volume was used. Engine performance and exhaust emission variation were investigated by adding boron that has 20 nm-sized and hexagonal crystal structure and CNG to diesel fuel at certain rates. In this way, it was aimed to provide a contribution to the literature. All experiments were fulfilled under a constant engine speed of 500 rpm and a load of 25, 50, 75 and 100 Nm. Boron additive has been observed to improve the BSFC and BTE. Compared to the pure diesel fuel, 50 and 100 ppm nano boron added diesel fuels (without CNG), the BSFC value decreased by 4.10, 2.52 %, and the BTE value increased by 2.92, 2.11 %, respectively, based on the average of the values at all loads. It has been observed that 50-ppm Boron additive is relatively better than 100-ppm Boron additive in regards to BTE and fuel economy. Compared to the pure diesel fuel, in the diesel fuel added with CNG at the ratios of 500, 1250 and 2000 g/h, the BTE value decreased by an average of 10.39, 27.21 and 39.74%, and the BSFC value increased by 7.63, 27.43 and 49.88%, respectively, under 100 Nm load. It was observed that the BTE and BSFC values worsened in relation to the increase in the CNG amount in the fuel blend. Under 100 Nm load, in comparison with pure diesel fuel, in the diesel fuel blend added with 50 and 100 ppm boron (without CNG), there was a decrease respectively in the CO amount by 22.4 and 23.6%, in the HC amount by 18.1 and 22.0% and in the CO2 amount by 4.2 and 3.1 %, while the NOx amount increased by 13.7 and 12.7 %. Under 100 Nm load, in comparing with pure diesel fuel, in the fuel blends added with 500, 1250 and 2000 g/h CNG, significant increases in the CO emission (avg. 7.5, 15.9 and 25.1 times, respectively) and in the HC emission (avg. 2.4, 4.1 and 5 times, respectively) were determined. On the other hand, the amount of NOx decreased by 40.5, 59.4 and 68.2 % (avg.), respectively, and the amount of CO2 decreased by 8.8, 16.7 and 22.5% (avg.), in the 500, 1250 and 2000 g/h CNG added fuel blends compared to the pure diesel fuel under 100 Nm load.