METHOD OF ESTIMATION OF LOW-TEMPERATURE PERCEPTION OF MOTOR FUELS FOR ENGINES OF VEHICLES Russian patent published in 2017 - IPC G01N33/22 G01N11/02 

FIELD: test equipment.

SUBSTANCE: method includes supplying the fuel cooled to a predetermined temperature through a fine mesh filter, varying the supply and pressure values of the fuel in the fuel line, recording the fuel consumption through the fine mesh filter and the critical fuel supply temperature, additionally setting the cooling rate of the fuel, thereby forming of the 15 stages of the test cycle as a necessary and minimally sufficient set of test modes in the form of a matrix, at each stage of a given duration, the critical temperature cottages fuel when fuel reaching through fine mesh filter limit value, the generalized parameter T_isp low-temperature pumpability of the test fuel is determined after the test cycle, compare the obtained value with the value of this parameter for fuel, adopted as a standard of T_et and passing an identical test cycle, and when the value of T_is>T_et fuel for use in motor vehicles is recommended, while the generalized parameter T_isp(_et) of low-temperature pumpability of fuel is calculated by the formula.

EFFECT: increase of informative value and reliability of evaluation due to expansion and creation of test conditions, which are closer to real operating conditions of equipment.

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