| 摘要 |
PCT No. PCT/GR94/00023 Sec. 371 Date Aug. 16, 1995 Sec. 102(e) Date Aug. 16, 1995 PCT Filed Nov. 24, 1994 PCT Pub. No. WO95/16852 PCT Pub. Date Jun. 22, 1995A u-shaped cam lobe (1) has a bulge (9) furnished at one end of the cam lobe (1) which cooperates with a longitudinal groove (10) furnished in a cylindrical shaft (2). The bulge (9) and the longitudinal groove (10) form a joint around which the cam lobe (1) can rotate. The cylindrical shaft (2) has a longitudinal borehole (8) running parallel to a longitudinal axis of the cylindrical shaft (2). Two transverse boreholes (6, 7) run inclined each to other to meet the longitudinal borehole (8). Two balls (4, 5) move inside the transverse boreholes (6, 7) of the cylindrical shaft (2). The two balls (4, 5) cooperate with two recesses (11, 12) furnished in a transmission (3). By shifting the transmission shaft (3) along the longitudinal axis of the cylindrical shaft (2), the balls (4, 5) move and push the cam lobe (1). The cam lobe (1) rotates around a fixed point placed offset from the perpendicular symmetry axis of the cam lobe thereby causing a change, of a lift cam, valve opening time and valve closing time. |
