Valve deactivator for pedestal type rocker arm
AssigneeEaton Corporation
InventorKynan L. Church
Life of this patent
Estimating the term…
Abstract
A valve deactivator assembly (43) for an internal combustion engine. The deactivator assembly (43) is of the type having a two-stage latchable means (49) movable between a latched (FIG. 3) position, effecting normal valve opening and closing, and an unlatched (FIG. 4) position, in which valve opening and closing may either be reduced or eliminated. The deactivator assembly (43) includes a rotatable latch member (69) which is rotated between the latched and unlatched positions by a electromagnetic actuator (51), including a rotatable armature (75) which is fixed to rotate with the latch member (69). With the arrangement of the invention, having no linkage, and very little inertia, movement between the latched and unlatched positions can occur during a single revolution of the engine cam shaft.
Claims11
A valve deactivator assembly for an internal combustion engine of the type having valve means for controlling the flow to and from a combustion chamber, drive means for providing cyclical motion for opening and closing said valve means in timed relationship to the events in said combustion chamber, and valve gear means operative in response to said cyclic motion to effect cyclic opening and closing of said valve means;
- said valve deactivator assembly being of the type having a two-state latchable means movable between a latched position and an unlatched position, and operative in said latched position to provide normal predetermined opening and closing of said valve means, and operative in said unlatched position to effect lost motion of said valve gear means and effect opening and closing of said valve means by a predetermined amount which is less than said normal, predetermined opening and closing;
- said valve deactivator assembly including a latch member rotatably movable between said latched and said unlatched positions;
- characterized by:
- (a) said valve deactivator assembly including an electromagnetic actuator having a stationary electromagnetic coil operable to generate magnetic lines of flux, a stationary pole piece, and a rotatable armature operable to rotate under the influence of said magnetic lines of flux;
- (b) said rotatably movable latch member being fixed to rotate with said rotatable armature.
Dependencies are inferred from the claim text.