Patent Document ID: 6140647
Application ID: 08994787
Patent Flag: 1

Claim One:
1. A process for the prediction of an environmental pollution regulatory parameter for a liquid hydrocarbon fuel, due to evaporation and combustion in an internal combustion engine, comprising a) measuring the absorbance or Raman intensity of the fuel, or of at least one component of the fuel, with a spectrometer in at least one band of the electromagnetic spectrum; b) transforming the absorbance or Raman intensity measured in step a) by mathematical transformation comprising multivariant regression analysis to obtain a mathematically transformed absorbance or Raman intensity value; c) substituting said transformed absorbance or Raman intensity value into an equation or correlation which predicts said environmental pollution regulatory parameter, or one or more input values to a model for obtaining said environmental pollution regulatory parameter, of a liquid hydrocarbon fuel; and d) obtaining a prediction of said environmental pollution regulatory parameter or one or more of said input values of said liquid hydrocarbon fuel.