| 摘要 |
An I.C. engine has a block, the engine forming a bore and having a crankshaft. The engine includes: (a) first and second pistons that reciprocate in that bore, (b) connection structure interconnecting the pistons, the pistons operatively connected to the crankshaft, (c) valve casing structure operatively coupled to the block, there being a first zone in the bore between the casing structure and one piston, and a second zone between the casing structure and the other piston, (d) the valves associating with the casing structure adapted to pass intake air into one of such zones and to exhaust compressed air out of the other of the zones in response to piston movement in one direction, and adapted to pass intake air into the other of the zones and to exhaust compressed air from that one zone in response to piston movement in the opposite direction.
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