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.
Claims25
In a rotary valve system for a motor and the like, including a flow conduit terminating in a combustion chamber, and a rotary valve for metering fuel flow through said flow conduit, the improvement comprising, in combination:
- a pair of rotatable camshafts positioned on opposite sides of said flow conduit,
- means for causing synchronous rotation of said camshafts in a manner correlating with the rotation of said rotary valve;
- valve plate member means positioned between said camshafts, said plate member means being transversely movable relative to said flow conduit to define a sealing surface across said flow conduit in a first position, and to define an open aperture across said flow conduit in a second position;
- and
- cam means on each camshaft in communication with said plate member means to cause said plate member means to respectively move between said first and second positions as said camshafts rotate.
In a rotary valve system for a motor and the like, including a flow conduit terminating in a combustion chamber, and a rotary valve for metering fuel flow through said flow conduit, the improvement comprising, in combination:
- a pair of rotatable camshafts positioned on opposite sides of said flow conduit, in a manner correlating with the rotation of said valve;
- valve member means defining first and second, laterally positioned plate members, said plate members each defining a parallel sealing edge, said plate members being positioned whereby said parallel sealing edges abut each other in sealing relationship, said plate members being transversely movable in opposite directions, actuated by the camshafts, relative to said flow conduit whereby said parallel sealing edges can abut each other in sealing relationship to define a sealing surface across said flow conduit in a first position, and said parallel sealing edges can be spaced from each other to define an open aperture across said flow conduit in a second position, and cam means on each camshaft in communication with said plate members to cause said plate member means to respectively move in opposite directions from each other between said first and second positions as said camshafts rotate, said plate member means being positioned between the rotary valve and the combustion chamber;
- in which one of said parallel sealing edges is defined by a sliding member assembly which comprises a first sliding member as part of one of said plate members and having a forward edge, and a second sliding member carried by said first sliding member and defining said one sealing edge, adapted for sealing contact with the other sealing edge of the other plate member, said second sliding member being relatively movable in the direction of motion between said first and second positions, and means for causing said one sealing edge to project outwardly beyond the forward edge of said first sliding member in said first position, while causing said one sealing edge to retract rearwardly in back of the forward edge of said first sliding member while moving from said first position to said second position, whereby the one sealing edge is protected from the direct blast of exhaust gas upon opening the seal defined between the plate members.
In a rotary valve system for a motor and the like including a flow conduit terminating in a combustion chamber, and a rotary valve for metering fuel flow through said flow conduit, the improvement comprising, in combination, valve plate member means, said plate member means being transversely movable relative to said flow conduit to define a sealing surface across said flow conduit in a first position, and to define an open aperture across said flow conduit in a second position, said valve plate member means defining first and second plate members, said plate membrs each defining a parallel surface, said plate members being positioned whereby said parallel surfaces abut each other in sealing relationship to define said sealing surface in the first position, and said sealing surfaces being spaced from each other to define the open aperture in said second position, and means for moving said plate members in opposite directions to each other between said first and second positions.
Dependencies are inferred from the claim text.