Akademik Veri Yönetim Sistemi
Journal of the Faculty of Engineering and Architecture of Gazi University, cilt.40, sa.2, ss.899-910, 2025 (SCI-Expanded)
Nowadays, diesel engines are intensely used in various sectors such as agriculture and transportation. Therefore, the demand for diesel fuel still continues. Various problems such as polluting gases released into the environment as a result of the use of diesel fuel and stricter exhaust emission norms have led researchers to search for alternative fuels. Researchers are focusing on biodiesel fuels that are sustainable and less harmful to the environment. In order to increase the use of high-rate biodiesel in diesel engines, there is a need to investigate the effects of various additives. In this study, the effect of multi-walled carbon nanotube (MWCNT) added to the biodiesel-n-octanol mixture on the performance, combustion and engine noise of a diesel engine with CRDI system was investigated. B95O5 fuel was created by adding 5% n-octanol by volume to biodiesel. By adding 100 ppm MWCNT to this mixture fuel, B95O5100MWCNT fuel was obtained. Four different test fuels, pure diesel (D100), pure biodiesel (B100), B95O5 and B95O5100MWCNT, were used in the experimental study. The experimental study was carried out under four different load conditions (25%, 50%, 75% and 100%) at a constant speed of 1500 rpm. According to the results, it was determined that the engine torque of B95O5100MWCNT fuel was higher than that of B95O5 fuel. Brake specific energy consumption (BSEC) and combustion efficiency were improved with MWCNT additive. While the maximum cylinder gas pressure was achieved with D100, the maximum heat release rate was reached with B95O5. Engine noise level was increased in operation with B95O5. The noise level was reduced with the addition of MWCNT.