Hydraulic lash adjuster, a valve train comprising the same and a method of assembling the same
AssigneeEaton Corporation
InventorMassimo D'Amore
Life of this patent
Estimating the term…
Abstract
A hydraulic lash adjuster includes a body and a plunger assembly slideably mounted with respect to the body. A first chamber is defined by the body and the plunger assembly and is configured to contain a hydraulic fluid. A second chamber is configured to supply the hydraulic fluid to the first chamber through a valve disposed between the first and second chambers in response to a movement of the plunger assembly that increases the volume of the first chamber. An aperture opens into the second chamber. A stopper is insertable into the aperture during use of the hydraulic lash adjuster such that the stopper restrains the hydraulic fluid from exiting the second chamber through the aperture and enables air to exit the second chamber through the aperture.
Claims13
A hydraulic lash adjuster, comprising:
- a body;
- a plunger assembly slideably mounted with respect to the body;
- a first chamber defined by the body and the plunger assembly and configured to contain a hydraulic fluid;
- a second chamber configured to supply the hydraulic fluid to the first chamber through a valve disposed between the first and second chambers in response to a movement of the plunger assembly that increases the volume of the first chamber;
- an aperture opening into the second chamber;
- and
- a stopper insertable into the aperture during use of the hydraulic lash adjuster such that the stopper restrains the hydraulic fluid from exiting the second chamber through the aperture and enables air to exit the second chamber through the aperture.
A method of assembling a hydraulic lash adjuster, the method comprising:
- providing the hydraulic lash adjuster comprising:
- a body;
- a plunger assembly slideably mounted with respect to the body;
- a first chamber defined by the body and the plunger assembly and configured to contain a hydraulic fluid;
- a second chamber configured to supply the hydraulic fluid to the first chamber through a valve disposed between the first and second chambers in response to a movement of the plunger assembly that increases the volume of the first chamber;
- an aperture opening into the second chamber;
- and
- a stopper insertable into the aperture during use of the hydraulic lash adjuster such that the stopper restrains the hydraulic fluid from exiting the second chamber through the aperture and enables air to exit the second chamber through the aperture;
- inserting an implement through the aperture into the second chamber;
- using the implement to open the valve between the first chamber and the second chamber during performance of a lash adjuster pump up procedure;
- and
- inserting the stopper into the aperture.
A valve train assembly comprising:
- a valve train component holding a hydraulic lash adjuster comprising:
- a body;
- a plunger assembly slideably mounted with respect to the body;
- a first chamber defined by the body and the plunger assembly and configured to contain a hydraulic fluid;
- a second chamber configured to supply the hydraulic fluid to the first chamber through a valve disposed between the first and second chambers in response to a movement of the plunger assembly that increases the volume of the first chamber;
- an aperture opening into the second chamber;
- and
- a stopper insertable into the aperture during use of the hydraulic lash adjuster such that the stopper restrains the hydraulic fluid from exiting the second chamber through the aperture and enables air to exit the second chamber through the aperture.
Dependencies are inferred from the claim text.