Fluid proportioning throttle valve - has armature assuming arbitrary position within motion range after magnetic coil excitation

摘要

The armature of the electrically controlled throttle valve can assume any arbitrary position within its entire movement range. The positioning depends on its magnetic coil being excited by a current of corresponding strength. This effect alone provides a throttling action. The valve has an aperture closed in the currentless state, and another aperture closed in the valve energised condition. Preferably a pressure range adjustment is enabled by mechanical elements. The valve cooperates with a pressure detector enabling both piezo-resistive and piezoelectric pressure measuring. Another type of pressure measuring may be provided by magnetic force compensation. A display may indicate when the valve range is outside its pressure control region and cannot operate effectively anymore. The rated value for the valve operation may be adjusted manually by a ootentiometer.