EXECUTIVE MECHANISM OF HYDRAULIC DRIVE OF VALVE OF INTERNAL COMBUSTION ENGINE (VERSIONS) Russian patent published in 2015 - IPC F01L9/00 

FIELD: engines and pumps.

SUBSTANCE: executive mechanism of hydraulic drive of valve of internal combustion engine contains the hydraulic cylinder housing (1) fixed on the head of the block of cylinders of the engine in the cavity of which with a possibility of reciprocating movement the piston (2) connected with the valve (3) of the internal combustion engine is installed. There is a working body feeding channel (9) and drainage channel (7). In the upper part of the hydraulic cylinder housing (1), at least, two rows of holes (4) and (5) are made, at least, one of which is located above the piston (2) position in the top dead point. The holes (4) and (5) interconnect the hydraulic cylinder cavity with the working body drainage channel (7). The piston (2) is the cylinder with the partition of smaller diameter in its middle part and has the internal cavity (10) opened in the upper part. The partition has the radial windows (11) interconnecting the internal cavity (10) of the piston (2) with the feeding channel (9). When the piston (2) is in the lower dead point its upper cylindrical part blocks the feeding channel (9). The version of implementation of the executive mechanism of hydraulic drive of valve of internal combustion engine is described.

EFFECT: noise reduction, decrease of wear and increase of durability of the valve and seat.

4 cl, 4 dwg