These days, the world is looking for alternative sources of energy to reduce emissions, Sulphur content, and use another fuel source instead of fossil fuels, especially diesel fuel. Diesel engines play an important role in power generation, automotive sectors, and several industries. The most common alternative fuel used in diesel engines is biodiesel. Biodiesel is suitable for diesel engines instead of petroleum diesel as the combustion of petroleum diesel produces harmful and toxic emissions. This type of fuel is very common because it is very easy to be produced and available. Biodiesel is produced by various methods from vegetable oils and animal fats. The most common method used in biodiesel production is transesterification. In this review, we will indicate the injection and combustion processes of biodiesel using different blends to realize the benefits of using this fuel instead of petroleum diesel fuel.
KEYWORDS: Biodiesel, Diesel engine, Injection, Ignition, Combustion; Emissions