HYDRAULIC TAPPER Russian patent published in 2002 - IPC

FIELD: mechanical engineering; engines. SUBSTANCE: invention relates to transfer mechanisms between driving member and valve of internal combustion engine. Proposed tappet has housing made in form of hollow cylinder with one end closed by bottom, ring-shaped groove on outer cylindrical surface of housing, through hole for delivering working liquid into inner space of housing, bushing installed in housing space with hydraulic compensator fitted in bushing hole for displacement and including cup-shaped plunger and valve body, and cups made of elastic deformable material resting by lower end face on radial flange of bushing. Inner cylindrical surfaces of cup are simultaneously in contact with cylindrical surface of plunger located higher than upper end face of bushing and with cylindrical surface of bushing overlapping clearance between outer cylindrical surface of plunger and inner cylindrical surface of bushing. EFFECT: reduced leakage of liquid from working chambers, simplified design and improved reliability of hydraulic tappet. 3 cl, 1 dwg