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In this experimental study, the effects of animal biodiesel (AB) and diesel mixtures in different proportions and the addition of 2-ethylhexyl nitrate (2-EHN) at different percentages (1%, 2%, and 3%) as a fuel additive to these mixtures were investigated in terms of performance and emission characteristics. According to the experimental results, the highest brake thermal efficiency (BTE) was obtained with 97 D + 3 2EHN as 26.99% at 3000 W engine load. At the same load, an increase of 7.58% was found compared to diesel fuel. The brake specific fuel consumption (BSFC) values increased with the addition of 2EHN to the diesel, while the addition of 2EHN to the AB resulted in a decrease in BSFC. In general, carbon monoxide (CO) and hydrocarbon (HC) emissions decreased for all fuels compared to diesel, except for 97AB + 3 2EHN fuel. The lowest CO and HC emissions were obtained with 97 D + 3 2EHN as 0.022% and 13 ppm, respectively. HC emissions decreased by 67.77% and 60.6%. On the other hand, nitrogen oxide (NO x ) emissions were obtained with the lowest pure diesel fuel, while the smoke emissions were obtained the lowest with AB-containing fuels.

petroleum science and technology

Comparison of the changes in diesel engine characteristics caused by the addition of 2-EHN cetane improver according to the use of diesel and second-generation biodiesel