Servo-drive for rotary angle adjustment of an actuator for controlling an opening cross-section of a medium flow line

US5554901A · kind A · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Friedrich Wendel · Rutesheim, DE
• Manfred Franz · Ditzingen, DE
• Johannes Meiwes · Markgröningen, DE
• Uwe Hammer · Hemmingen, DE
• Michael Altmann · Folsom, US
• Dieter Dick · Rochlitz, DE

Key dates

• Filing date: Apr 11, 1994
• Grant date: Sep 10, 1996
• Expiry date: Apr 11, 2014

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F02M2003/067
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A known servo-drive including a stator which is formed with two-component design or the exciter winding has to be attached directly to the stator, which is associated with a costly production method. The new servo-drive is to permit easy and cost-effective manufacture with favorable actuation properties. The stator of the servo-drive includes in the region of the poles, weak points which are formed either by recesses or by gaps. An induction core includes a winding which is inserted into a yoke constructed on the stator by which a magnetic field can be induced in the stator. The alternating combination of sheet-metal laminas having gaps and recesses permits the torque/rotary angle characteristic of the servo-drive to be optimized with favorable production properties. The servo-drive for rotary angle adjustment of an actuator is used for example to control the opening cross-section of a medium-conducting flow line in internal combustion engines for the purpose of controlling idling speed.