Multi-stage rotary valve for adjusting flow of medium to internal combustion engine, has rotary drive comprising drivable worm for moving armature axial to cross-section adjusting elements, which are rotated in state coupled with armature

摘要

The valve (1) has a rotary drive producing rotational angle difference between cross-section adjusting elements (2). The rotary drive has a drivable worm (4) for moving an armature (3) axial to the cross-section adjusting elements. The cross-section adjusting elements are rotated in a state coupled with the armature. The worm is rotated for axial displacement of the armature in a direction and for rotation of the cross-Section adjusting element into an opposite direction. A groove shaft (5) is arranged in interior of the worm. A pin (11) is engaged into the groove shaft.