STANDARD SAMPLES FOR METROLOGICAL PROVISION OF TESTS OF AUTOMOBILE GASOLINES IN ASSESSING THEIR PROPENSITY TO FORM DEPOSITS ON NOZZLE PARTS Russian patent published in 2018 - IPC G01N33/22 G01N1/00 

FIELD: chemistry.

SUBSTANCE: invention can be used in chemical industry. Standard samples for metrological provision of measurement techniques are used in assessing the propensity of automobile gasolines to form deposits in injection systems of a combustion engine and used for control of quality of automobile gasolines in the course of their production and operation. Standard samples consist of individual hydrocarbons, include n-pentane, octene-1, toluene, cyclohexane, isooctane and are similar in component composition to produced gasolines. Ratio of components in volume percent: octene-1 1–18 %, n-pentane 15–50 %, toluene 25–35 %, cyclohexane 22–30 %, isooctane up to 100 %.

EFFECT: proposed invention provides the increased reliability of indices of assessing the propensity of automobile gasolines to form deposits in injectors of injection systems, as well as the significantly reduced duration of plant attestation, since the composition of standard samples is similar to the composition of real gasolines.

1 cl, 1 dwg, 3 tbl