Investigation of water-in-diesel emulsified fuel in a 6-cylinder diesel engine to evaluate the influence of water emulsification on engine performance and exhaust emissions. The presence of water particles in the emulsification method in diesel fuels causes microexplosion phenomena during combustion in the cylinder. With the incidence of this process, a greater supply of oxygen to the fuel improves its combustion. Emulsified diesel fuels with water/diesel ratios of 5, 10, and 15 vol% were used in a 6-cylinder direct injection diesel engine. The fuel consumption of the emulsion systems was higher than that of diesel, but the tiny water droplets improved the diesel's combustion. Compared to diesel, a reduction in carbon monoxide (CO) and nitrogen oxide (NOx) emissions and a slight reduction in HC were observed for the emolsified fuel. The presence of water particles and additives in the fuel decreased the calorific value of the fuel and, despite the improvement of combustion due to microexplosion phenomena, a loss of engine power occurred.Keywords: diesel engine, diesel emulsified in water, emissions, fuel IntroductionDiesel engines were used early in heavy-duty vehicles; It is only in the last decade that it has become popular in light-duty applications for their greater fuel efficiency. Greater fuel efficiency in the diesel engine is achieved due to the high compression ratios together with the high concentration of air in the combustion chamber. However, these same factors lead to large NOx emissions in diesel engines. Stringent emissions standards have been a significant driving force in making internal combustion engines more environmentally friendly. The important emissions from the diesel engine... half of the paper... digital flow meter was used. This flow meter was placed in the fuel flow path and the fuel return path was redirected to the other tank. The emissions analyzer made by Germany was used to measure the pollutants coming out of the exhaust which has a measurement capacity of O2, HC, NOx, CO, CO2 and represents the oil temperature. Water-in-diesel emulsions consisting of diesel fuel and ordinary tap water were prepared in an ultrasonic vibrator. To stabilize the emulsions, a 2% by volume surfactant mixture consisting of Span 80 and Tween 80 was used. Four mixtures were tested: pure Diesel and Diesel fuel with surfactant and 5%, 10% and 15% water by volume . The prepared emulsified fuel is a milky white liquid as seen in Fig. 6. For each use the engine was started with pure diesel and then switched to the test mixture. A schematic picture of the experimental apparatus is shown in Fig 7.

Topic > Investigation of water-in-diesel emulsified fuel in a 6-cylinder diesel engine to evaluate the influence of water emulsification on engine performance and exhaust emissions. The presence of water particles in the emulsification method in diesel fuels causes microexplosion phenomena during combustion in the cylinder. With the incidence of this process, a greater supply of oxygen to the fuel improves its combustion. Emulsified diesel fuels with water/diesel ratios of 5, 10, and 15 vol% were used in a 6-cylinder direct injection diesel engine. The fuel consumption of the emulsion systems was higher than that of diesel, but the tiny water droplets improved the diesel's combustion. Compared to diesel, a reduction in carbon monoxide (CO) and nitrogen oxide (NOx) emissions and a slight reduction in HC were observed for the emolsified fuel. The presence of water particles and additives in the fuel decreased the calorific value of the fuel and, despite the improvement of combustion due to microexplosion phenomena, a loss of engine power occurred.Keywords: diesel engine, diesel emulsified in water, emissions, fuel IntroductionDiesel engines were used early in heavy-duty vehicles; It is only in the last decade that it has become popular in light-duty applications for their greater fuel efficiency. Greater fuel efficiency in the diesel engine is achieved due to the high compression ratios together with the high concentration of air in the combustion chamber. However, these same factors lead to large NOx emissions in diesel engines. Stringent emissions standards have been a significant driving force in making internal combustion engines more environmentally friendly. The important emissions from the diesel engine... half of the paper... digital flow meter was used. This flow meter was placed in the fuel flow path and the fuel return path was redirected to the other tank. The emissions analyzer made by Germany was used to measure the pollutants coming out of the exhaust which has a measurement capacity of O2, HC, NOx, CO, CO2 and represents the oil temperature. Water-in-diesel emulsions consisting of diesel fuel and ordinary tap water were prepared in an ultrasonic vibrator. To stabilize the emulsions, a 2% by volume surfactant mixture consisting of Span 80 and Tween 80 was used. Four mixtures were tested: pure Diesel and Diesel fuel with surfactant and 5%, 10% and 15% water by volume . The prepared emulsified fuel is a milky white liquid as seen in Fig. 6. For each use the engine was started with pure diesel and then switched to the test mixture. A schematic picture of the experimental apparatus is shown in Fig 7.