CYLINDER-PISTON GROUP Russian patent published in 2022 - IPC F02F1/20 F01M3/04 

FIELD: engine technology.

SUBSTANCE: cylinder-piston group of an internal combustion engine contains a cylinder sleeve (1) with a piston (2) installed in it, equipped with piston rings (3). The cylinder sleeve (1) is equipped with electromechanical vibrators, which are piezoelectric plates (4) equipped with electrical contacts for supplying alternating electric voltage to them. Vibrators in the amount of two pieces are located on the outer surface of the sleeve (1) of the cylinder at a distance from 1/3 to 1/2 of the height of the sleeve (1) of the cylinder from its upper edge. Vibrators are made in the form of two diametrically arranged arc-shaped conical piezoelectric plates (4) rigidly attached to the outer surface of the cylinder sleeve (1) in the plane of the connecting rod swing. The angular length of the arc-shaped piezoelectric plates (4) of vibrators in a plane perpendicular to the axis of the cylinder is from 20 to 30 degrees. The angle of inclination of the cones of the plates (4) of vibrators to the axis of the sleeve (1) of the cylinder is from 30 to 45 degrees to create transverse-longitudinal ultrasonic mechanical vibrations of the working inner surface of the sleeve (1) of the cylinder when starting the engine and in the mode of its post-start heating.

EFFECT: reducing the friction force in the cylinder-piston group and the wear rate of its parts when starting the engine and during its post-start warm-up mode.

1 cl, 3 dwg