Hydraulic valve lifter for internal combustion engine

摘要

A valve lifter employs a plunger head to be coupled with a seat plunger. The plunger head is provided an upper end surface mating with a surface of an upper end wall of a lifter body so that the upper surface may establish face contact with the mating surface of the upper end wall. The plunger head is so designed as to define a communication path for establishing fluid communication between a fluid supply path to a fluid reservoir defined in the seat plunger and another communication path for establishing fluid communication between the fluid supply path to a drainage formed through the upper end wall of the lifter body.