| 摘要 |
PCT No. PCT/SE90/00784 Sec. 371 Date Jun. 30, 1992 Sec. 102(e) Date Jun. 30, 1992 PCT Filed Nov. 28, 1990 PCT Pub. No. WO91/08381 PCT Pub. Date Jun. 13, 1991.A device for taking up valve clearance in the valve mechanism of an internal combustion engine, which mechanism includes rocker arms arranged on at least one rocker arm shaft. The take-up occurs by means of an actively adjustable, hydraulically operated take-up means operable between two positions, i.e., a withdrawn position and an extended position, which take-up means is arranged at the operating end of the rocker arms whose valve clearance is to be taken up. The hydraulic pressure for operating the take-up means is achieved by a somewhat increased lubrication pressure in the rocker arm shaft for this type of engine, which pressure for said extension of the take-up means is increased by wholly or partially blocking the normal drainage of the oil. |
