Lash adjuster and valve system
AssigneeEaton Corporation
InventorsDale A. Stretch, Christopher E. Hill, Edwin D. Lorenz
Life of this patent
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Abstract
An added-motion hydraulic valve system is disclosed. The added-motion hydraulic valve system includes an engine valve actuator that causes movement of an engine valve, fluid that moves through a solenoid actuator valve, and a fluid actuator housing having a volume for receiving said fluid. The volume is disposed between the engine valve actuator and an engagement end of the engine valve. A lash adjuster assembly for a valve system is also disclosed. The lash adjuster assembly includes an actuator fluid housing and an added motion hydraulic lash adjuster disposed within the actuator fluid housing. According to an embodiment, the lash adjuster assembly includes a mechanical lash adjuster actuated by a cam arrangement.
Claims29
A hydraulic valve system, comprising:
- an engine valve including an engagement end;
- an engine valve actuator that causes movement of said engine valve;
- a solenoid actuator valve;
- and
- an added motion fluid actuator housing having a volume for receiving fluid, wherein said volume is disposed between the engine valve actuator and said engagement end of the engine valve, wherein, when said solenoid valve is moved to an open position, said fluid is permitted to be forced out of said added motion fluid actuator housing during an opening and closing stroke of said engine valve, and, wherein, when said solenoid valve is moved to a closed position, said fluid is trapped in said added motion fluid actuator housing and prevented from being forced out of said added motion fluid actuator housing to prevent a change in lift of said engine valve.
A lash adjuster assembly for a valve system, comprising:
- an added motion actuator fluid housing;
- an added motion hydraulic lash adjuster disposed within the added motion actuator fluid housing;
- a lash adjuster piston disposed within the a lash adjuster body, wherein the lash adjustment piston provides hydraulic lash adjustment of an engine valve when the engine valve is at zero lift;
- a cam arrangement that causes movement of the engine valve;
- fluid that moves through a solenoid actuator valve;
- and
- a volume defined by the added motion actuator fluid housing for receiving said fluid, wherein, when said solenoid valve is moved to an open position, said fluid is permitted to be forced out of said added motion actuator fluid housing during an opening and closing stroke of said engine valve, and, wherein, when said solenoid valve is moved to a closed position, said fluid is trapped in said added motion actuator fluid housing and prevented from being forced out of said added motion actuator fluid housing to prevent a change in lift of said engine valve.
A lash adjuster assembly for a valve system, comprising:
- an added motion actuator fluid housing;
- an added motion hydraulic lash adjuster disposed within the added motion actuator fluid housing;
- a mechanical lash adjuster actuated by a cam arrangement;
- a lash adjuster piston disposed within the a lash adjuster body, wherein the lash adjustment piston provides hydraulic lash adjustment of an engine valve when the engine valve is at zero lift;
- a cam arrangement that causes movement of the engine valve;
- fluid that moves through a solenoid actuator valve;
- and
- a volume defined by the added motion actuator fluid housing for receiving said fluid, wherein, when said solenoid valve is moved to an open position, said fluid is permitted to be forced out of said added motion actuator fluid housing during an opening and closing stroke of said engine valve, and, wherein, when said solenoid valve is moved to a closed position, said fluid is trapped in said added motion actuator fluid housing and prevented from being forced out of said added motion actuator fluid housing to prevent a change in lift of said engine valve.
A hydraulic valve system, comprising:
- an actuator valve movable for placement in an open position and closed position;
- an engine valve including an engagement end;
- an engine valve actuator including a cam profile that provides movement of the engine valve according to a cam profile baseline stroke course;
- and
- means for deviating movement of the engine valve during the cam profile baseline stroke course to an added motion stroke course, wherein the means is disposed between the engine valve actuator and the engagement end of the engine valve, wherein the deviating movement includes a transition from the cam profile baseline stroke course to the added motion stroke course, wherein the transition includes a holding pattern of a lift position of the engine valve for a period of time.
Dependencies are inferred from the claim text.