Transposed compression piston and cylinder
OwnerMelvin A. Rossinventor
Life of this patent
Estimating the term…
Abstract
A compression piston and cylinder mechanism for the V type two piston Stirling engine which substantially reduces engine dead volume without increasing complexity or decreasing mechanical efficiency. A stepped piston is attached at its smaller outer portion to a relatively long connecting rod. The piston seal is located at the larger inner portion of the piston, thereby permitting a short passage of low dead volume to connect the volume swept by the compression piston to the engine's heat exchangers. A stepped cylinder corresponds to the shape of the piston, having a smaller outer portion that sustains the side loading resulting from connecting rod angularity, and a larger inner portion that the piston seals against.
Claims6
An improved V-type two piston Stirling engine wherein the improvement is a transposed compression piston slidably engaged in a mating cylinder and comprising:
- a cylindrical body which is pivotally connected to a connecting rod at a pivot axis which is relatively nearer the outer end of the cylindrical body and has a seal relatively nearer the inner end of the cylindrical body.
An improved V-type two piston Stirling engine wherein the improvement is a transposed compression piston and cylinder comprising:
- (a) a compression piston comprising:
- (1) an outer cylindrical portion having a relatively smaller diameter and having a sealed wrist pin and wear band means for reducing friction;
- (2) an inner cylindrical portion of relatively larger diameter and having a peripheral seal;
- and
- (3) a piston connecting wall joining the inner and outer portions of said piston;
- and
- (b) a compression cylinder comprising:
- (1) an outer cylindrical portion of relatively smaller diameter matingly and slidably receiving the outer cylindrical portion of the piston;
- (2) an inner cylindrical portion of relatively larger diameter matingly and slidably receiving the inner cylindrical portion of the piston;
- and
- (3) a cylinder connecting wall joining the inner and outer portion of the cylinder.
Dependencies are inferred from the claim text.