Hydraulic lash adjustment device for internal combustion engine valve train has a common housing for gas exchange valves and pressure pistons enclosed by sub-reservoirs joined in longitudinal web by cross-channel to form common reservoir

摘要

A common housing (2) is provided for pressure pistons (3) and gas exchange valves. Each piston extends in a separate guide (4) of the housing. A support (6) indirectly contacts the gas exchange valve and one-way valve in a region of a bottom of the housing. A separate high pressure chamber (9) linked with each piston extends axially between the bottom of the housing and a base of the housing. Each piston encloses a sub-reservoir (11a,11b) in hydraulic communication with one another through a traverse-channel (15) arranged in a longitudinal web (16) forming a common reservoir (11).