| 摘要 |
A multi-cylinder internal combustion engine comprising a cylinder assembly with intake ports and exhaust ports arranged in register, wherein the distribution system for opening and closing said intake and exhaust ports includes two rotary pipes (T-8, T-9) each consisting of a plurality of mutually communicating aligned hollow valves (8a, 8b, 8c, 8d or 9a, 9b, 9c, 9d) with a side wall provided with as many apertures (10a, 10b, 10c, 10d; 11a, 11b, 11c, 11d) as there are cylinders. The rotary intake pipe (T-8) and the rotary exhaust pipe (T-9) are housed in an intake manifold (31) and an exhaust manifold (32) respectively, each defining a chamber surrounding said intake pipe (T-8) and said exhaust pipe (T-9) respectively over a large part of the periphery thereof, said chambers (31, 32) being sealed off from one another and arranged so that gaseous fluids can flow freely outside and along said rotary distribution pipes (T-8, T-9).
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