METHOD FOR DIFFERENTIATION OF LIQUID HYDROCARBON FUELS ON COMBUSTION EFFICIENCY IN DIESEL ENGINES Russian patent published in 2016 - IPC G01N33/22 

FIELD: engines and pumps.

SUBSTANCE: invention relates to investigation of liquid hydrocarbon fuels and can be used in development of new and evaluation of existing fuels. Method involves determining cetane index (CI) at nomogram of liquid hydrocarbon fuels using scales density at 20°C, temperature of boilout 50 vol% and kinematic viscosity at 50°C and additional measurement of kinematic viscosity at 50°C to residual fuel, diesel and heavy diesel fuel; temperature boilout 50% vol. petrol, jet fuel, diesel and heavy diesel fuels, calculation of optimum cetane index (CI_on) of the analysed fuel experimentally obtained mathematical relationships of temperature boilout 50 vol%. from kinematic viscosity at 50°C or from the arithmetic mean value on both such values on combined section temperature boilout 50% vol. and kinematic viscosity at 50°C, determination of difference CI and CI_on, and its value-differentiation of liquid hydrocarbon fuels (from petrol to residual) at combustion efficiency in diesel engines.

EFFECT: higher reliability of differentiation of liquid hydrocarbon fuels in combustion efficiency in diesel engines.

2 cl, 6 ex, 2 tbl, 3 dwg