| 摘要 |
PROBLEM TO BE SOLVED: To improve heat efficiency by applying the constitution that an air-fuel mixture is sucked into an annular cylinder for compression with an arc piston, and fuel gases of high temperature and high pressure resulting from the ignition and combustion of the compressed air-fuel mixture are made to act on the head of the arc piston for causing the curved reciprocating motion of the arc piston within the annular cylinder. SOLUTION: When the left head of an arc piston 7 reciprocating along a curve begins an air compression stroke, the right head of the piston 7 enters an air intake stroke. As a result, an air intake valve 25 automatically opens and, then, a valve 2' for a scavenging port drilled in a division 3 automatically closes. In addition, when the head of the arc piston 7 compresses the air up to the top dead center of a combustion chamber 4, a fuel injection pump 23 and an ignition plug 24 operate to explode and burn an air-fuel mixture. Then, combustion gases of high temperature and high pressure generated due to the combustion of the mixture act on the head of the arc piston 7 to start a working stroke. When the arc piston 7 capable of performing the working stroke arrives at the bottom dead center, an extremely short exhaust pipe 16 opens, and the combustion gases are blown from the pipe 16 to the impeller 26 of a radical gas turbine 15 directly.
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