Joshua Paul James Thadhani, Kandasamy Annamalai, Venkatesan Elumalai Perumal, Saleel Chanduveetil Ahamed
Department of Automobile Engineering, Madras Institute of Technology (MIT) Campus, Anna University, Chromepet, Chennai, Tamil Nadu 600 044, India.
Department of Mechanical Engineering, Aditya Engineering College, Surampalem, Andhra Pradesh 533437, India.
ACS Omega. 2023 Oct 28;8(44):41243-41257. doi: 10.1021/acsomega.3c04694. eCollection 2023 Nov 7.
The main aim of the study was to reduce carbon emissions in the atmosphere using a novel (AN) biofuel using higher air temperatures and reducing the consumption of conventional fossil fuel (diesel). The use of a heat exchange chamber within the air intake manifold is a popular method to reduce hydrocarbon (HC) and carbon monoxide (CO) emissions during cold starts. A premixed charged compression ignition engine in the dual-fuel mode was used in this study with raw diesel, raw AN oil, AN70+D30, AN80+D20, AN80+D20 (35 °C), AN80+D20 (40 °C), and AN80+D20 (45 °C). A chamber was designed and analyzed to measure the exit temperature and density change and to determine the reduction in volumetric efficiency of the engine, using Ansys Fluent software. A sustainability assessment study was performed to understand the feasibility of the fuel and the design using the Pugh Matrix. The fuel AN80+D20 with an air temperature of 45 °C was found to be superior to all other fuels in terms of brake thermal efficiency, reaching at 32.1%. D100 used the least amount of energy, whereas AN80+D20 used the most. Engine HC emission was at the lowest (45.01 ppm) for AN80+D20 fuel at 45 °C air input and reached the highest (50 ppm) for AN100 fuel. With an air temperature of 45 °C, CO emission was at its lowest for AN80+D20 gasoline (0.018%) and was at its highest for AN100 (0.072%). Nitrogen oxide emissions were the highest for AN80+D20 fuel with an air temperature of 45 °C, with an air concentration of 1254 ppm, whereas they were the lowest for AN100 (900 ppm). CO values were reduced, with D100 showing the lowest levels and AN100 showing the highest. The smoke emission was minimum for AN80+D20 fuel at 45 °C, with a smoke number of 15 compared to 33 for D100 fuel. As per the Pugh Matrix assessment, AN80+D20 with 35 °C air temperature had higher scores compared to all of the other fuel mixtures.
该研究的主要目的是使用一种新型（AN）生物燃料，利用更高的空气温度并减少传统化石燃料（柴油）的消耗，以降低大气中的碳排放。在进气歧管内使用热交换室是减少冷启动期间碳氢化合物（HC）和一氧化碳（CO）排放的常用方法。本研究使用了一台双燃料模式的预混充量压缩点火发动机，使用了原柴油、原AN油、AN70+D30、AN80+D20、AN80+D20（35℃）、AN80+D20（40℃）和AN80+D20（45℃）。设计并分析了一个腔室，以测量出口温度和密度变化，并使用Ansys Fluent软件确定发动机容积效率的降低情况。进行了一项可持续性评估研究，以使用普格矩阵了解燃料和设计的可行性。发现空气温度为45℃的燃料AN80+D20在制动热效率方面优于所有其他燃料，达到32.1%。D100消耗的能量最少，而AN80+D20消耗的能量最多。对于空气输入温度为45℃的AN80+D20燃料，发动机HC排放最低（45.01 ppm），而对于AN100燃料则达到最高（50 ppm）。空气温度为45℃时，AN80+D20汽油的CO排放最低（0.018%），而AN100的CO排放最高（0.072%）。对于空气温度为45℃的AN80+D20燃料，氮氧化物排放最高，空气浓度为1254 ppm，而对于AN100则最低（900 ppm）。CO值降低，D100的水平最低，AN100的水平最高。对于45℃的AN80+D20燃料，烟度排放最低，烟度值为15，而D100燃料的烟度值为33。根据普格矩阵评估，空气温度为35℃的AN80+D20与所有其他燃料混合物相比得分更高。
