Abstract
Diesel engine is an internal combustion engine that uses the high compression pressure to ignite the combustible mixture due to high temperature in the combustion chamber. There were many studies on the fuel-air premixing that resulting from air entrainment which linked to the improvement of exhaust emissions [1][2][3]. The most important issue in diesel combustion is achieving sufficient rapid mixing between the injected fuel and the air in cylinder prior to ignition. The oxidation reactions at the end of endothermic period depend on the physical process such as air entrainment, the breakup of the jet spray, and droplets evaporation.
Highlights
Diesel engine is an internal combustion engine that uses the high compression pressure to ignite the combustible mixture due to high temperature in the combustion chamber
Air-fuel mixing process is a key element in diesel combustion, a good understanding of the formation of the spray is essential to improve fuel-air premixing, ignition process and combustion process
Result and Discussion The effect of blending biodiesel ratio and injection pressure on mixture formation were investigated at the base standard diesel for ambient temperature and heated temperature of 60°C
Summary
Diesel engine is an internal combustion engine that uses the high compression pressure to ignite the combustible mixture due to high temperature in the combustion chamber. There were many studies on the fuel-air premixing that resulting from air entrainment which linked to the improvement of exhaust emissions[1,2,3]. The most important issue in diesel combustion is achieving sufficient rapid mixing between the injected fuel and the air in cylinder prior to ignition. Air-fuel mixing process is a key element in diesel combustion, a good understanding of the formation of the spray is essential to improve fuel-air premixing, ignition process and combustion process. Spray atomization and fuel-air mixing play a significant role on engine performance, combustion and emissions. To understand the phenomena in the combustion chamber of diesel engine, studies using visualization techniques have been made by researchers of universities and industries[4,5]
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