| 摘要 |
The apparatus comprises a casing (3), a cylinder head (1), a chamber sleeve tube (4) to form a combustion chamber (17), a cylinder (5) and a drive piston (18). Isolating means (24) are mounted on the chamber sleeve tube (4) so as, when the apparatus is opened, to isolate the space (32) formed between the anterior part (27) of the chamber sleeve tube (4) and the casing (3) from the combustion chamber (17). A bellows (30) is provided for ducting the cooling and venting fresh air directly towards the chamber (17).
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