A higher cetane number means the fuel will ignite more easily and quickly, leading to more efficient combustion and better engine performance. CNIs work by increasing the cetane number of diesel fuel, typically by reducing the ignition delay time, which is the time between fuel injection into the combustion chamber and the start of combustion. This can be achieved by several mechanisms, such as changing the fuel’s chemical composition, altering the fuel’s physical properties, or modifying the combustion process itself.

Using CNIs in diesel fuel includes improved engine performance, increased fuel efficiency, reduced emissions, and improved cold-start performance. Higher cetane numbers can also enable the use of lower-quality diesel fuels, which may be cheaper and more readily available.

Adding CNIs to diesel fuel can be an effective way to improve engine performance and efficiency. Still, it is essential to carefully consider the potential benefits and drawbacks before using them.