A Fuel Quality Index (FQI) is a numerical measure that evaluates the quality of fuel based on a variety of critical characteristics or test parameters.
For diesel fuel, the FQI serves as a key indicator of how well the fuel will perform in terms of combustion efficiency, engine health, environmental impact, and safety.
The index is calculated by considering several important parameters, such as the Cetane Number, which affects ignition quality and combustion;
Viscosity, which influences fuel injection and engine performance; Sulfur Content, which impacts emissions and environmental compliance; Flash Point, which is crucial for fuel safety;
and Density, which determines the energy content of the fuel. By analyzing these factors, the FQI provides a comprehensive understanding of the fuel’s overall performance and suitability for
different applications, ensuring optimal engine operation and reducing harmful emissions.
