Variable flow valve with position sensor
AssigneeITT Automotive Europe GmbH
InventorHans-Jorg Feigel
Life of this patent
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Abstract
A directly actuated vibration absorber valve for controllable vibration absorbers. The valve includes a valve body that is actuatable by an electromechanical transducer. In the range of low volumetric flow rates an output signal is conveyed to an electric circuit which actuates the electromechanical transducer in such a way that a greater restricting function is imposed than that imposed during a second range of volumetric flow rates.
Claims23
A vibration absorber valve, comprising:
- a valve body,
- an electromechanical transducer for actuating said valve body,
- a measuring apparatus for monitoring the actuating travel of said valve body,
- an electric circuit coupled to said measuring apparatus and in such a way that in a first range of volumetric flow rate of a fluid through said valve body, a first restricting function is performed and in a second range of volumetric flow rate of a fluid through said valve body, a second restricting function is performed.
A method of adjusting the vibration absorbing force of a controllable vibration absorber which is used in a chassis regulating system for automotive vehicles and which is furnished with an absorber valve being actuatable through an electrical output stage, the chassis regulating system being furnished with sensors for monitoring the driving dynamics of the automobile and with an electronic chassis regulator whose output signals serve to actuate said absorber valve, comprising the steps of:
- conveying output signals (Y.sub.set) of the chassis regulator to a comparator circuit jointly with output signals of a measuring apparatus,
- monitoring the actuating travel of the valve body using the measuring apparatus,
- conveying said chassis regulator output signals (Y.sub.set) to a first amplifier,
- within the comparator circuit forming a differential value between said chassis regulator output signals (Y.sub.set) and a feed back signal comprising the measuring apparatus output signals,
- transmitting the differential value output of said comparator circuit to a second amplifier,
- conveying the outputs of the first and second amplifiers to a variable delimiter which limits the output signals of the second amplifier depending on the output signals of the first amplifier, and,
- conveying the output of said delimiter to the electrical output stage of the absorber valve to thereby actuate said absorber valve to adjust the vibration absorbing force.
Dependencies are inferred from the claim text.