Patent ID: 6325034
Filing Date: 2001-12-04
Classification: F01L

Abstract:
A hydraulic lash adjuster adapted to be disposed within a bore defined in an internal combustion engine, said hydraulic lash adjuster comprising a ball plunger including a body portion, whereby said body portion is reciprocable in said bore as said ball plunger reciprocates between a relatively retracted position and a relatively extended position; said hydraulic lash adjuster further comprising a leakdown plunger assembly disposed within said body portion and adapted to be disposed downward in response to downward movement of said ball plunger and said body portion; said leakdown plunger assembly having a bottom portion disposed toward a bottom of said bore, said plunger assembly and one of said bottom portion and said bottom of said bore cooperating to define a high pressure chamber; characterized by:(a) said ball plunger and said body portion comprising a single, integral, formed member; and(b) said body portion defines an axial length equal to a major portion of the entire axial length of said bore, and further defines an outside diameter wherein said axial length is from about 1.0 to about 1.4 times said outside diameter.