Combined effects of water emulsion and CH3NO2 (nitromethane) additive on combustion performance and emissions characteristics of a single-cylinder diesel engine using neem and cotton seed oil as biodiesel blends

In the present study, the effects of water emulsion and CH3NO2 (nitromethane) additive on the combustion performance and emission characteristics using biodiesel blends are investigated on single cylinder diesel engine. The emulsification technique is used to reduce the oxides of nitrogen emission. Biodiesel is produced from cotton seed, neem oil and blended with mineral diesel to form different blend compositions with Nitromethane as an additive. Blends 10, 20, 30, 40 and 100% diesel are the blending proportion. The experiment was undergone in single-cylinder diesel engine coupled with an exhaust gas analyzer. For making emulsion, surfactant blends were screened for their effectiveness in stabilizing water in biodiesel emulsion system. The Biodiesel was mixed with water in different the ratios to investigate the stability & characteristic of fuel. Effective results were obtained with blend of SPAN 80/TWEEN 80. A high-speed mixing homogenizer technique was used to obtain the resultant water in biodiesel emulsion containing blend of SPAN 80/TWEEN 80. Effective results were foreseen on the combination of B20 proportion with CH3NO2 blend in specific fuel consumption and envisioned amount of reduced emission behaviour was observed.