| 摘要 |
The valve control means for use in an internal combustion engine has a valve member 180, a cam assembly comprising a rotatable camshaft (185) having a first portion (181) and a second portion (182) having a different cross section from the first portion (181). The valve control assembly comprises first follower member (100) engageable with the valve member (180) and engageable with the first portion (181), a hydraulic lash adjuster assembly provided in the first follower member (100). A second follower assembly (150) moveable relative to the first follower member (100) and engageable with the second portion (182) and a linking assembly (160, 163, 167) to enable the first (100) and second (150) followers to be linked together. In use of the valve control when the first (100) and second (150) follower are not linked the motion of the valve (180) is controlled by the first follower (100) and the valve (180) is given in each engine cycle the lift of the first portion (181) and when the first (100) and second (150) follower are linked the motion of the valve (180) is controlled by the second follower (150) and the valve (180) is given in each engine cycle the lift of the second portion (182).
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