Abstract: Many countries that import crude oil are concerned about the fast expanding consumption of fossil fuel products in prime movers because it results in large foreign outflows. Increased exhaust emissions and the scarcity of these fuels are a major source of concern for everyone. As a result, it is vital to develop renewables that meet today's needs. Because they are renewable, vegetable oils have the potential to alleviate this problem. Biodiesel, which is made from non-edible oils, is a highly promising fuel for diesel engines. Biodiesel has a number of benefits, including the technical feasibility of mixing it with diesel, lower emissions, and the ability to utilise existing storage facilities. Combustion of fuels in engines is a crucial activity in the power generation and transportation industries. It is critical to develop better strategies for efficient combustion of current fuels, as well as methodology for burning various types of fuels in engines. With the inclusion of combustible nanoparticles, the efficiency of a CI engine using biodiesel can be improved. It is based on the finding that biofuels contain more oxygen than is necessary; the addition of fuel additives can aid in the entire usage of oxygen, result in the complete burning and the release of additional energy, increasing efficiency and lowering emissions. In the current research biodiesel is produced from dairy scum. Study of impact of bio based material (Cardanol) fuel additive on B20 dairy scum biodiesel blend is carried out using a 4 stroke, single cylinder diesel engine.

Keywords: Dairy Scum Biodiesel, Cardanol, Fuel Additives, Brake Thermal Effeciency.

| DOI: 10.17148/IARJSET.2022.9333