Indicated Cetane Number Analysis
AFIDA is a revolutionary development providing you with a fully automated way of determining Indicated Cetane Number (ICN) of diesel and diesel related fuels. The AFIDA can analyze multiple samples in sequence and selects the samples using the 36-place autosampler. Only a small sample volume of 40 ml is required per test with a short analysis time of approximately 25 minutes.
The analyzer uses a Constant Volume Combustion Chamber (CVCC) and incorporates a unique and patented high pressure injection system that generates fine fuel droplets similar to modern common rail injectors in most diesel engines.
An ultra robust temperature controlled piezo electric injector provides rapid switching and highly repeatable fuel metering, offering you improved performance and consistency when compared with solenoid controlled injectors and pintle type nozzles.
- Excellent correlation to ASTM D613, IP 41 and BS EN ISO 5165, BS 2000-41, ISO 5165
- Wide sample types - middle distillates, blend components, biodiesel, FAME, XTL, HVO, heating oil and Jet A1
- Suitable for use with Cetane improvers
- Calibrated with industry approved PRFs over the range 35 to 85 ICN
- Precise and reproducible software controlled determination of ICN
- Results saved to PC or for download
- Stable calibration - fixed test conditions eliminates routine temperature tuning
- Low running costs, single gas supply for combustion air
Additional InfoDirect correlation to ASTM D613 (ISO 5165) engine tests:
The traditional Cetane Engine methods establishanignition delay period for the test fuel which is referenced to a primary reference fuel scale.
Existing Constant VolumeCombustionChamber (CVCC) technology provides a Derived Cetane Number (DCN) result based on a historical averaged correlation equationapplied to theignition delay of the fuel sample.
The new generation AFIDA technology is a significant step forward as it uses thesame PrimaryReference Fuels as specified in the Cetane Engine method to provide a calibrated cetane numbermeasurement.Safety:
TheAFIDA has multiple integral safety monitoring functions to ensure the system is running safely andaccurately.
The AFIDA also hassafety functions in place to prevent the system from overheating in the event of a powerfailure.Standardization:
Industrystakeholders recognize the advantages of the AFIDA with CEN, ASTM and the EnergyInstitute forming new working groups to develop testmethodology; IP 617 is already published as an approved testmethod.
Inter-laboratory studies showed outstanding precision andexcellent correlation when compared with samples with known CetaneNumbers. The coefficient of determination (R²) is 0.98. An investigationinto carryover with 2-EHN Cetane Improver showed no effect.