EVALUATION OF THE COMBUSTION AND EMISSIONS PERFORMANCE OF NEEM (AZADIRACHTA INDICA) BIODIESEL IN A COMPRESSION IGNITION ENGINE

A lot of research has been done on biodiesel as a replacement for traditional fossil fuels due to the growing demand for environmentally friendly and sustainable energy sources. Due to its high oil content, low cost, and lack of
competition with food resources, neem (Azadirachta indica) oil—a non-edible and abundant feedstock in tropical regions—has become a promising raw material for the production of biodiesel. This study examines the transesterification process used to produce neem biodiesel and assesses its
combustion, emission, and performance properties in a compression ignition (CI) engine. According to experimental results, blends of neem biodiesel show brake thermal efficiency that is comparable to that of diesel, albeit with a slightly higher brake specific fuel consumption because of their lower calorific value. Particulate matter, unburned hydrocarbons (HC), and carbon monoxide (CO) have all significantly decreased, according to emission analysis.