| 摘要 |
<p>PURPOSE:To improve compression ratio characteristics by positioning the rocking center of a cylinder by a double mechanism, comprising two internal gears and an external gear, such that the rocking center is displaced peripherally by a mounting displacement angle centering around the central axis of a main shaft based on a reference surface. CONSTITUTION:A double mechanism comprises a first internal gear 31 positioned concentrically to an axis C1 of a main shaft 11 and joined with a casing 1, an external gear 32 positioned concentrically to an axis C2 of a crank pin 12 and rotatably attached on a left main shaft half body 11a, and a second internal gear 33 positioned concentrically to an axis C3 (the axis of a coupling ring 14) of an outer peripheral surface 13a of an eccentric collar 13 and formed integrally with a coupling ring 14. The rotation angle of the eccentric collar 13 is regulated such that the central axis C1 of the main shaft 11 the center C2 of the crank pin 12, and the center C3 of the outer peripheral surface 13a of the collar 13 are aligned in one straight line, and positioning is made such that a cylinder rocking axis surface C is displaced by an angle theta on a basis of a reference line A.</p> |
