Manifold valve for coolant circuit of internal combustion engine, has valve drive for rotating valve body and including step motor driven by control unit and single-stage reduction gear that stands in toothed engagement with internal gear

摘要

The valve (2) has a housing that is provided with several connections. A valve body is arranged in the housing, is rotatable around a rotary axis and is supported in a bearing. A valve drive (18) is provided for rotating the valve body and has a step motor (76) driven by a control unit and a single-stage reduction gear (78). The reduction gear has a drive pinion (86) that is connected with an output shaft of the step motor and stands in toothed engagement with an internal gear (90) connected with the valve body.