| 摘要 |
PCT No. PCT/AU92/00545 Sec. 371 Date Apr. 14, 1994 Sec. 102(e) Date Apr. 14, 1994 PCT Filed Oct. 14, 1992 PCT Pub. No. WO93/08372 PCT Pub. Date Apr. 29, 1993.A two stroke engine (2) comprises a housing (4), a cylinder (6), a shaft (10) rotatably supported in the housing (4) for rotation about the cylinder axis (14), a piston (8) slidably mounted on the shaft (10) while fixed for rotation with the shaft (10) and co-operating slidably with cylinder (6), a pair of sinusoidal tracks (16) and track engaging elements (18) arranged respectively on the piston (8) and on the housing (4) to relatively rotate the piston (8) about the cylinder axis (14) while undergoing reciprocation in the cylinder (6) to impart rotation to the shaft (10). Additionally, scavenging means for the engine (2) is provided by the piston (8) having a first piston head portion (24) and a second piston head portion (26) connected by a sleeve portion (28) for combined reciprocation in the respective cylinder portions (20) and (40) to supply compressed scavenging fluid and compressed combustion fluid from cylinder portion (40) to cylinder portion (20) where combustion takes place.
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