Opposed piston diesel engine
An opposed piston engine includes a valve mechanism for regulating fluid flow through an opening formed in a cylinder of the engine. The mechanism includes a valve operatively coupled to the cylinder so as to be rotatable to a first position to seal the opening and to a second position to unseal the opening, and at least one cam surface operatively coupled to the cylinder so as to be movable with respect to the cylinder to engage the valve so as to produce rotation of the valve.
1. A valve mechanism comprising:
a valve structured to be operatively coupled to a non-rotating engine cylinder, so as to be rotatable to a first orientation to seal an opening formed in the cylinder, and so as to be rotatable to a second orientation to unseal the opening; and
at least one cam surface structured to be operatively coupled to the cylinder so as to be rotatable about an exterior of the cylinder to engage the valve so as to produce rotation of the valve.
2. An opposed piston engine including a valve mechanism in accordance with claim 1 .
3. The engine of claim 2 wherein the engine is a diesel engine.
4. The valve mechanism of claim 1 further comprising a member structured to be mountable on an exterior of the cylinder so as to be rotatable along the cylinder exterior, and wherein the at least one cam surface is formed on the member.
5. The valve mechanism of claim 4 wherein another at least one cam surface is formed on the member, the other at least one cam surface being structured to engage the valve so as to produce rotation of the valve.
6. The valve mechanism of claim 5 wherein the valve has a first actuator and a second actuator formed thereon, wherein the first actuator is structured to engage the at least one cam surface and not the other at least one cam surface during rotation of the member, and wherein the second actuator is structured to engage the other at least one cam surface and not the at least one cam surface during rotation of the member.
7. The valve mechanism of claim 1 wherein the valve is pivotally attached at one side thereof to an edge of an associated valve port formed in the cylinder.
8. The valve mechanism of claim 4 further comprising another member structured to be mountable on an exterior of the cylinder opposite the member and structured so as to be rotatable along the cylinder exterior to rotate about the cylinder, the other member including at least one other cam surface structured to be operatively coupled to the cylinder so as to be rotatable about the cylinder to engage the valve so as to produce rotation of the valve.
9. The valve mechanism of claim 8 wherein the at least one cam surface is structured to engage the valve so as to produce a rotation of the valve at a first point in time during the engine cycle, and the at least one other cam surface is structured to engage the valve so as to produce a rotation of the valve at a second point in time during the engine cycle, and wherein the second point in time is different from the first point in time.
10. The valve mechanism of claim 8 wherein the member and the other member are structured to enable coupling thereof to the cylinder so as to rotate in conjunction with each other, at the same speed and in the same direction.
11. The valve mechanism of claim 4 wherein the member has gear teeth formed along a surface thereof.
12. The valve mechanism of claim 1 wherein the at least one cam surface is structured so as to vary in radial distance from a central axis of the cylinder along an extent of the at least one cam surface.
13. The valve mechanism of claim 7 wherein the at least one cam surface is structured to contact a follower formed on the valve, and wherein the valve mechanism is structured such that motion of the follower along the at least one cam surface rotates the valve to the first position and to the second position.
14. The valve mechanism of claim 1 wherein the valve is structured to be hingedly connected to the cylinder.
15. The valve mechanism of claim 4 wherein the member is structured such that the at least one cam surface travels around a circumference of the cylinder as the member rotates about an exterior of the cylinder.
16. The valve mechanism of claim 4 further comprising another valve and another member positioned opposite the member and structured to rotate the cylinder, the other member including at least one other cam surface operatively coupled to the cylinder so as to be rotatable about the cylinder to engage the other valve so as to produce rotation of the other valve.
17. The valve mechanism of claim 14 wherein the valve is structured to be connected to the cylinder by a hinge mechanism, and wherein the valve is structured to engage the at least one cam surface so as to produce rotation of the valve about the hinge mechanism.
18. The valve mechanism of claim 1 wherein the valve comprises at least one actuating arm, and a cam follower mechanism coupled to the actuating arm and structured to engage the at least one cam surface so as to produce rotation of the valve.
19. The valve mechanism of claim 5 further comprising another valve and wherein a further at least one cam surface is formed on the member and spaced radially outwardly from both the at least one cam surface and the other at least one cam surface, the further at least one cam surface being structured to engage the other valve so as to produce rotation of the other valve.
20. The valve mechanism of claim 1 wherein the valve includes:
a plate portion having a combustion chamber face;
a pivot portion connected to the plate portion and structured for pivotable coupling to the non-rotating cylinder; and
an actuator portion structured to engage the at least one cam surface during rotation of the at least one cam surface.