Rotary valve system for motors and the like having improved sealing means
AssigneeAlto Automotive, Inc.
InventorTony E. Vallejos
Life of this patent
Estimating the term…
Abstract
A rotary valve system for a motor and the like includes a flow conduit and rotary valve means interposed in the flow conduit. Intermittent sealing means are provided for preventing flow through the flow conduit, comprising a sealing surface intermittently positionable in stationary, sealing relationship across the conduit. Means are also provided for moving the sealing surface into such stationary sealing relationship with the flow conduit, and out of sealing relationship with the flow conduit in a manner correlating with the operation of the rotary valve means, to facilitate sealing as the valve operates.
Claims38
In a rotary valve system for a motor and the like, including a flow conduit terminating in a combustion chamber, and a rotary valve mounted in a housing, interposed in said flow conduit, the improvement comprising, in combination:
- rotatable camshaft means;
- means for rotating said rotary valve in a manner responsive to rotation of said camshaft means;
- intermittent occluding and sealing means for preventing flow through said flow conduit comprising a stationary sealing surface intermittently positionable across said conduit, and first means, operated by said camshaft means, for moving said stationary sealing surface into stationary occluding and sealing relation with said flow conduit and out of occluding and sealing relation with said flow conduit, said occluding and sealing means being adapted whereby the intermittent occluding and sealing by said surfaces is correlated with the operation of said rotary valve means, to seal said flow conduit when said rotary valve is in closed position, and to be out of said occluding and sealing relation when said rotary valve is in open position, and second means, operated by said camshaft means, for intermittently exerting pressure through said rotary valve housing to press said stationary sealing surface into improved occluding and sealing relation with said flow conduit when said sealing surface is positioned in said occluding and sealing relation.
In a motor, including a fuel flow conduit communicating with a combustion chamber containing a piston for obtaining power by combustion in said chamber, a rotary valve system defining:
- a rotary valve, mounted in a housing and interposed in said flow conduit for regulating the flow of combustable materials into said chamber, and also for regulating the flow of exhaust gases out of said chamber;
- a rotatable camshaft;
- drive means for rotating said rotary valve in a manner responsive to rotation of said camshaft;
- rocker arm means positioned about said camshaft, and adapted for reciprocating rocking motion responsive to said rotating camshaft, said rocker arm means defining remote portions spaced from said camshaft, said remote portions carrying valve plate means therebetween;
- said valve plate means defining an aperture, and being positioned across said flow conduit, whereby, as said rocker arm means and valve plate means rock back and forth upon rotation of said camshaft, said aperture is positioned in registry with said flow conduit in a second rocking position, said camshaft being proportioned to permit said valve plate means in the second rocking position to remain stationary in said sealing position for a predetermined period of the rotational cycle of said camshaft;
- and additional camming means on said camshaft for pressing said housing against said valve plate, while said valve plate occupies said second position, to facilitate said stationary sealing, said camming means being adapted for pressure-releasing disengagement from said housing during said rocking motion of the valve plate between said first and second rocking positions, said drive means for rotating the rotary valve in a manner responsive to rotation of said camshaft being adapted to cause said rotary valve to be in open position when said valve plate means is in its first, flow-permitting position.
In a motor, including a fuel flow conduit communicating with the combustion chamber containing a piston for obtaining power by combustion in said chamber, a rotary valve system defining:
- a rotary valve, mounted in a housing and interposed in said flow conduit for regulating the flow of combustable materials into said chamber, and also for regulating the flow of exhaust gases out of said chamber;
- a rotatable camshaft;
- drive means for rotating said rotary valve in a manner responsive to rotation of said camshaft;
- rocker arm means positioned about said camshaft;
- and adapted for reciprocating rocking motion responsive to said rotating camshaft, said rocker arm means defining remote portions spaced from said camshaft, said remote portions carrying a valve plate means therebetween;
- said valve plate means defining an aperture, and being positioned across said flow conduit, whereby, as said rocker arm means and valve plate means rock back and forth upon rotation of said camshaft, said aperture is positioned in registry with said flow conduit in a first rocking position, and an unbroken sealing surface of said valve plate means obstructs and seals said flow conduit in a second rocking position, said camshaft being proportioned to permit said valve plate means in the second rocking position to remain stationary in said sealing position for a predetermined period of the rotational cycle of said camshaft;
- and sealing means positioned about said flow conduit for engagement with said unbroken sealing surface of the valve plate in said second rocking position to facilitate sealing.
Dependencies are inferred from the claim text.