METHOD OF ESTIMATING TENDENCY OF MOTOR FUELS FOR LACQUER AND CARBON DEPOSITION Russian patent published in 2006 - IPC G01N33/22 

FIELD: petroleum derivative testing methods.

SUBSTANCE: invention, in particular, relates to estimating tendency of distillate and residual fuels for lacquer and carbon deposition as function of hydrocarbon type content, which can be used in research enterprises and refinery laboratories as well as in enterprises dealing with development and employment of motor fuels. Method according to invention comprises supplying fuel in droplet-liquid state at atmospheric pressure into air preheated to operation temperature of internal combustion engine with time intervals equal to free fall time of droplet, during which interval a droplet undergoes heating, vaporization, inflammation, burning, and thermal-oxidative conversion, after which mass of lacquer and coal deposits formed on heated plate made from catalytically active material and installed at an angle to fall axis of unburned droplet is measured, said angle of slope of plate before supply of fuel is selected within a range of Pα = 15-45° depending on hydrocarbon type content of fuels employed.

EFFECT: improved accuracy and reliability of test procedure.

1 dwg, 1 tbl