Laboratory ignition quality measurement for refineries, specification test laboratories and research applications
Monthly fuel exchange test results over the past decade from ASTM and the Energy Institute have demonstrated that the IQT™ combustion pressure recovery ignition delay is highly correlated to the ASTM D613 cetane number (CN). The Test Method can accurately measure the ignition delay of a wide range of middle distillate fuels over the entire cetane number scale including conventional diesel fuels, oil sands-based, biodiesel, refinery streams, specialty fuels, as well as fuels with nitrate-based and oxygenate-based cetane improver additives.
Based on a model developed from well characterized ASTM NEG fuel remnants (see reference 1), the IQT™ results are displayed in real time in ignition delay and derived cetane number (DCN) formats. The test sequence is completely automated and is performed in under 20 minutes (including sample and system preparation). Test results and statistical analysis are printed at the end of each test, permitting the operator to quickly read the computerevaluation of test validity.