DEVICE FOR EVALUATION OF LACQUER-FORMING PROPERTIES OF MOTOR OILS Russian patent published in 2017 - IPC G01N33/26 G01N33/28 G01N33/30 

FIELD: chemistry.

SUBSTANCE: device comprises a removable piston with outer cylindrical surface, along which a reciprocating sliding ring performs reciprocating motion. At the bottom of the oil bath, the platform with fixed vertical rods in it is set. The sliding ring has an outer generatrix arcuate recesses coaxial with the vertical diameter of the rods, thus creating conditions of uniform distribution of the test oil to the piston surface and eliminates the possibility of misalignment of the sliding ring with respect to the cylindrical surface of the piston estimated.

EFFECT: improved accuracy and reliability of the assessment lacquer properties of motor oils.

3 dwg