Sealed-type hydraulic lash adjuster
AssigneeHonda Giken Kogyo Kabushiki Kaisha
InventorsShoichi Honda, Masayasu Sakata, Yoichi Ishida
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Abstract
A sealed-type hydraulic lash adjuster having a reservoir chamber holding a hydraulic oil having a molecular weight distribution substantially equal to the molecular weight distribution of the exterior oil surrounding the lash adjuster. The approximate matching of molecular weight distributions of the hydraulic oil within the lash adjuster, and the exterior oil contacting the outside of the lash adjuster ensures that the volume of oil in the reservoir chamber remains substantially constant, as the amount of hydraulic oil passing through the diaphragm of the lash adjuster from the reservoir is equal to the amount of exterior oil passing through the diaphragm into the reservoir chamber.
Claims6
A sealed-type hydraulic lash adjuster for use in an apparatus wherein the lash adjuster comes into contact with a lubricating oil, comprising:
- a reservoir chamber containing a hydraulic working oil and generally sealed by an elastomeric diaphragm in direct contact with the lubricating oil, wherein said hydraulic working oil has a molecular weight distribution which is substantially equal to that of said lubricating oil.
The sealed-type hydraulic lash adjuster for use in an apparatus wherein the lash adjuster comes into contact with a lubricating oil, comprising:
- a reservoir chamber containing a hydraulic working oil and generally sealed by an elastomeric diaphragm in direct contact with the lubricating oil, wherein said hydraulic working oil has a molecular weight distribution slightly lower than the molecular weight distribution of the lubricating oil.
Dependencies are inferred from the claim text.