| 摘要 |
The invention concerns a two-stroke engine comprising a cylinder (1) wherein moves a piston (2), exhaust (6) and intake (7) devices and a blower (9) for blowing in the cylinder (1) a scavenging air stream , wherein an additional volume (10) communicates with the cylinder (1) through closing and opening means (11, 12) whereof the movements are controlled synchdnously or out shift with those of the piston (2) in the cylinder (1) such that, during the combustion/expansion phase the burnt gases compress the air located in the additional volume (10) by penetrating therein at least partially, the air/burnt gas mixture is trapped therein under pressure; then the mixture is induced into the cylinder (1) during the intake phase.
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