Experimental Analysis on the Ultrasound-based Mixing Technique Applied to Ultra-low Sulphur Diesel and Bio-oils

Abstract

Pollution in the maritime field is considered as such a serious problem that scientists, policymakers, and managers are always urged with a desire to find solutions and strategies one way or another to minimize its negative impacts on the environment and the life. Among the effective solutions, the use of fuels with limited-sulfur content or bio-based fuels has been paid much attention to due to their advantages in the use of marine diesel engines. In the current study, a type of fossil diesel fuel with ultra-low sulfur content (ULSD) was mixed with coconut oil (CO) through the ultrasonic treatment under the changes in volume fraction of as-used fuels, the correlation on viscosity selected the rate mixing between ULSD and coconut oil. After 12 minutes of ultrasound treatment, the highest stability of the ULSD-CO emulsion was achieved correspondingly to 97.8% for a mixing rate of 76%(ULSD):24%(CO) along with the distance of 85mm from the containing-vessel bottom to the ultrasound horn tip. Moreover, the spray characteristics including penetration length and a cone angle of ULSD, CO, and ULSD-CO emulsion were also examined and compared to diesel fuel. The similarity of spray characteristics to diesel fuel, containing ultra-low sulfur content and oxygen content, renewability are considered as some advantages of ULSD-CO emulsion as used for diesel engines aiming to meet the stricter requirements of IMO regulations about the strategies of environmental protection.

[RETRACTED] Investigation for Evaluating the Energy Recovery Capacity of the Mechanical Brake System on Urban Buses: A Case in Vietnam

“…In addition, the number of buses used in urban areas is very large, along with the development of public transport is an inevitable trend in the current period and tends to increase in the future [19]. Therefore, the problem of energy recovery of the brake system on urban buses brings great economic efficiency while also contributing to reducing environmental pollution [20]. Fig.…”

Research and Design an Experimental Model for the Determination of Deposits Formation Mechanism in the Combustion Chamber

“…When direct injection of fuel into the cylinder, the two main physical processes that can occur including the interaction between the spray and the wall surface, and the thin films formation. Both of these processes can affect the combustion efficiency and formation of pollutants [7]. Whether the spray-wall interaction occurs or not depends on the length of the spray and the distance between the nozzle and the combustion chamber wall.…”

“…The interaction between the fuel and the surface of the combustion chamber wall can lead to the formation of a liquid fuel film on the wall. The formation of this liquid film is necessary for creating deposits on the wall surface of the combustion chamber [7].…”

The Study Influences the Jatropha-Diesel Mixing Ratio to the Formation of Soot Emissions in Diesel Exhaust Gases

“…Even so, the fuel consumption of the engine is still lower than when the engine uses Bio5% fuel [18]. The process of preparing experiments and experiments, collecting experimental data [27]. Built motor speed characteristics through the relationship between torque, power and fuel consumption compared to engine speed at different load levels.…”