In the current energy situation of quick reduction of fossil fuels, there will be a multifold boost in research on biodiesel and pyrolysis oil as alternative fuels for use in CI engines. This research starts by describing the problems related to global fossil fuel scarcity and alternative sources. Clean burning and efficient fuel use will address the issue of public health and safety for many people. There is a massive conversion of fuel into motive energy as well as electrical energy, and this is typically a significant cost to each economy. This cost will be measured in terms of both economic and environmental impacts. Due to these costs, the world will be pushed towards a more efficient use of energy. The study's main goal is to assess the credibility of tyre pyrolysis oil as an alternative fuel and to determine the minimum specific fuel consumption for the various parameters in an internal combustion engine in order to save millions of tonnes of fuel. ns of fuel. The literature survey reveals that a little research has been conduct to obtain the optimal levels of variable parameters that yield the optimum SFC in Compression Ignition (CI) engine. A diesel engine is used as a prime mover for power generation in agriculture, personal and public transportation, industrial processes, and marine propulsion. Industries and marine propulsion are significant consumers of fuel; hence, there are economic and environmental costs involved. The present study was conducted with the main objective of improving the performance, emission, and combustion characteristics of a direct injection diesel engine fuelled with methyl ester biodiesel by DME fumigates at 250gm/hr flow rates. The effects of DME fumigation (the addition of DME to the intake air manifold) and tyre pyrolysis oil biofuel blends on the performance and emissions of a single-cylinder diesel engine were compared in a study. An attempt was made to determine the optimum percentage of DME that gives lower emissions and better performance

DME, tyre pyrolysis oil, Biofuel, CI Engine