The Effect of Methanol-Dodecanol Addition on Performance and Smoke Emission in a CI Engine with Diesel Fuel

Abstract

In the experimental study, the effects of diesel-methanol-dodecanol blends on en-gine performance and smoke emission in a single-cylinder, four-stroke, water-cooled, normally aspirated compression ignition engine were investigated. Fuel blend ratios in the study; Diesel (D100), diesel-methanol (D90M10) and diesel-methanol-dodecanol (D89M10D1) were used. In order to solve the phase separation problem in the diesel-methanol blend, 1% by volume of dodecanol was added. The test engine was oper-ated at four different loads (6, 12, 18 and 24 Nm) and constant engine speed (1800 rpm). The performance parameters such as brake specific fuel consumption, brake specific energy consumption and brake effective efficiency for each blend at various engine loads are calculated based on the experimental data. The results indicated that methanol adding diesel lead to worsens specific fuel consumption but improve BTE. A significant improvement was observed in smoke emissions with the addition of both methanol and dodecanol compared to diesel.