| 摘要 |
The invention proposes a two-stroke heat engine comprising at least one axial cylinder (12) having a bore (14) in which a piston slides and which comprises a plurality of substantially hexahedral peripheral ports (34) able to be opened or closed by the moving piston, which are each defined in the peripheral wall (30) by transverse faces (36, 38) defined by so-called gas directing ridges, said gas directing ridges (40, 42) of the upper face (36) and said gas directing ridges (46, 48) of the lower face (38) forming angles with a radial direction (R) oriented in opposite directions, characterized in that the opening (70) of the port (34) into the bore (14) is surrounded by edges (75) comprising at least one lateral joining ridge (72) between the upper face and the lower face, parallel to the cylinder axis (A). |
