Mechanically controllable valve operating mechanism, and mechanically controllable valve operating mechanism arrangement

摘要

A mechanically controllable valve operating mechanism includes a cylinder head, a camshaft, a transmission arrangement mounted to move in the cylinder head via a bearing device. A gas exchange valve has the transmission arrangement act thereon. A valve-lift adjusting device comprises a rotatable adjusting element with an eccentric element having two base points and a peak contour, and at least one further eccentric element. The valve-lift adjusting device acts on the transmission arrangement so that different valve-lift positions are settable. The transmission arrangement is connected to the valve-lift adjusting device and to the camshaft. The at least one further eccentric element of the rotating adjusting element is arranged so that at least two peak contours are provided so that, depending on a rotational angle α of the rotating adjusting element, the eccentric element or the at least one further eccentric element engage with the transmission arrangement.

主权项

1. A mechanically controllable valve operating mechanism comprising:
a cylinder head; a bearing device; a transmission arrangement comprising an end surface, the transmission arrangement being mounted so as to be movable in the cylinder head via the bearing device; a gas exchange valve configured to have the transmission arrangement act thereon via the end surface of the transmission arrangement; a spring element; a valve-lift adjusting device comprising a rotatable adjusting element with an eccentric element having two base points and a peak contour, and at least one further eccentric element arranged in a circumferential direction, the valve-lift adjusting device being configured to act on the transmission arrangement counter to a pre-stressing force of the spring element so that different valve-lift positions are settable; and a camshaft; wherein, the transmission arrangement is operatively connected to the valve-lift adjusting device and to the camshaft, and wherein, the at least one further eccentric element of the rotating adjusting element is arranged so that at least two peak contours are provided so that, depending on a rotational angle α of the rotating adjusting element, the eccentric element or the at least one further eccentric element engage with the transmission arrangement, and the two base points are separated from each other by at least one zero lift curve.