| 摘要 |
PCT No. PCT/EP93/02528 Sec. 371 Date Mar. 28, 1995 Sec. 102(e) Date Mar. 28, 1995 PCT Filed Sep. 18, 1993 PCT Pub. No. WO94/08129 PCT Pub. Date Apr. 14, 1994.A valve-actuating mechanism for a multicylinder internal combustion engine has, for each inlet valve of a cylinder, a low engine speed cam and a high engine speed cam. A first rocker arm cooperates with the low engine speed cam and the valve, while a second rocker arm cooperates only with the high engine speed cam and in the high engine speed range can be coupled to the first rocker arm in order to operate the valve in accordance with the contour of the high engine speed cam. The coupling between the first and second rocker arms is effected by means of a piston which can be moved by a pressure medium and which is acted on by the latter only when sufficient time remains to bring the piston into its coupling position before the commencement of the lifting phase of the valve in question.
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