| 摘要 |
The present invention relates to a double action piston assembly for an internal combustion engine said double action piston assembly including a combustion chamber having a first end and a second end and containing a double action piston connected to one end of a central power rod disposed within said combustion chamber along its longitudinal axis, said combustion chamber having an up side and a down side, a first intake air port and a first exhaust port located in the up side of the combustion chamber, a second intake air port and a second exhaust port located in the down side of the combustion chamber, a valve assembly for opening and closing the first and second intake air ports and first and second exhaust ports, a compression chamber having a first end and a second end, said first end of the compression chamber connected to the second end of said combustion chamber, said central power rod passing through the second end of said combustion chamber into said compression chamber along its longitudinal axis and out the second end of said compression chamber, a second piston attached to said central power rod within said compression chamber, said compression chamber having an up side and a down side, a first compression intake valve and a first compression exhaust valve located in the up side of the combustion chamber, a second compression intake valve and a second compression exhaust valve located in the down side of the combustion chamber, first conduit means connecting the first intake air port in the combustion chamber with the second compression exhaust valve in the compression chamber, second conduit means connecting the second intake air port in the combustion chamber with the first compression exhaust valve in the compression chamber, means to alternately feed a fuel mixture into the up side and a down side of the combustion chamber and ignition means adjacent the first and second ends of the combustion chamber to ignite said fuel mixture, wherein at the end of each stroke of the double action piston, the first and second compression exhaust valves in said compression chamber are opened and the first and second intake ports and the first and second exhaust ports in said combustion chamber are open to permit air from the compression chamber to pass through the first and second conduit means into the combustion chamber for full scavenging of the combustion chamber.
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