分会场

高效清洁燃烧

摘要

Diesel engines are most widely used in automotive, agriculture, and industry applications. However, their harmful exhaust emissions contribute to an increase in environmental air pollution. Therefore, alternative fuels have gained attention due to the depletion of fossil fuels, climate change, economic issues, population growth, and energy demand. Utilizing biodiesel derived from non-edible sources is the most efficient and appealing option for meeting energy needs from edible sources. Hence, this study included a comparative analysis of the combustion and emission characteristics of fatty acid methyl ester and hydrogenated catalytic biodiesel with diesel blends investigated under the World Harmonized Steady State Cycle. The results indicate that, except for the idle condition in Region E, D80H20 exhibits lower combustion phasing (CA50) and ignition delay, while higher maximum pressure (Pmax) compared to D100. On the other hand, D80B20 has lower CA10 and Pmax, particularly in mode 10. The brake-specific fuel consumption (BSFC) exhibits its lowest value in mode 10, while the BSFC of D80B20 and D80H20 is seen to be 1.49% higher and 0.86% lower than that of D100. It was observed that Mode 8 exhibited the lowest levels of NOx and CO2 emissions across all fuel types. Furthermore, when comparing these emissions with D100, the D80H20 and D80B20 fuels resulted in reductions of 4.7%, 3.8%, 4.83%, and 2.81% for NOx and CO2 emissions, respectively. The D80H20 fuel showed a reduction of 4.15% in Brake Specific Fuel Consumption (BSFC), 5.42% in Nitrogen Oxides (NOx) emissions, and 6.52% in Total Hydrocarbon (THC) emissions when compared to the D100 fuel across all models. Similarly, the D80B20 fuel showed a reduction of 6.9% in NOx emissions, 23.1% in THC emissions, and 4.9% in Carbon Dioxide (CO2) emissions. Compared to D80B20, D80H20 exhibits superior fuel efficiency, however, it is important to acknowledge the presence of emission-related concerns.

关键词

Fatty acid methyl ester;Hydrogenated catalytic biodiesel;World harmonized steady state cycle;Combustion;Emission.

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