Valve bridge with integrated lost motion system
AssigneeJacobs Vehicle Systems, Inc.
InventorsBrian Ruggiero, Neil Fuchs, Zhou Yang, Robb Janak
Life of this patent
Estimating the term…
Abstract
A system and method of actuating one or more engine valves is disclosed. In one embodiment, the system comprises: a valve train element; a rocker arm pivotally mounted on a shaft and adapted to rotate between a first position and a second position, the rocker arm selectively receiving motion from the valve train element; a valve bridge disposed above the one or more engine valves; and a lost motion system disposed in the valve bridge.
Claims30
A system for actuating two or more engine valves to produce an engine valve event, said system comprising:
- a movable valve bridge extending between the two or more engine valves, wherein a hydraulic circuit and a hydraulically actuated lost motion component are included in said movable valve bridge;
- and
- a means for moving the movable valve bridge operatively contacting the movable valve bridge.
A valve actuation system comprising:
- a rocker arm;
- an engine valve;
- a movable valve bridge for the engine valve disposed between the rocker arm and the engine valve;
- and
- means for varying actuation of the engine valve during engine operation, wherein said means for varying is provided at least in part in the movable valve bridge and includes a hydraulic circuit and a hydraulically actuated lost motion component within said movable valve bridge.
A system for actuating two or more engine valves in an internal combustion engine to produce an engine valve event, said system comprising:
- motion imparting means;
- a rocker arm pivotally mounted on a shaft and adapted to rotate between a first position and a second position, said rocker arm selectively receiving motion from said motion imparting means;
- a movable valve bridge disposed between said rocker arm and the two or more engine valves;
- one or more hydraulic fluid passages provided in the movable valve bridge;
- and
- a lost motion system disposed in said movable valve bridge, wherein said lost motion system comprises a first piston and a second piston slidably disposed in the valve bridge and communicating with said one or more hydraulic fluid passages.
A system for actuating two or more engine valves in an internal combustion engine to produce an engine valve event, said system comprising:
- motion imparting means;
- a rocker arm pivotally mounted on a shaft and adapted to rotate between a first position and a second position, said rocker arm selectively receiving motion from said motion imparting means;
- a movable valve bridge disposed between said rocker arm and the two or more engine valves;
- and
- a first hydraulically extendable piston slidably disposed in said movable valve bridge,
- wherein said first piston selectively causes said rocker arm to rotate from the first position to the second position.
A system for actuating two or more engine valves to produce an engine valve event, said system comprising:
- a rocker arm pivotally mounted on a shaft and adapted to rotate between a first position and a second position, said rocker arm selectively receiving motion from a valve train element;
- a movable valve bridge for the two or more engine valves;
- one or more hydraulic passages formed in the movable valve bridge;
- and
- means for varying actuation of the two or more engine valves, wherein said means for varying is provided at least in part in the movable valve bridge and communicates with said one or more hydraulic passages.
Dependencies are inferred from the claim text.