AUTOMOTIVE FLUIDIC PUMP
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United States of America Patent
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N/A
Issued Date -
Jan 9, 2014
app pub date -
Jan 18, 2012
filing date -
Jan 18, 2011
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
An automotive fluidic pump includes a driving device, a pump wheel, a hydraulic coupling configured as a magneto-rheological coupling comprising a rotatable driving clutch element which is permanently connected to the driving device. A rotatable driven clutch element is permanently connected to the pump wheel. A magneto-rheological liquid filling a working gap is arranged between the rotatable driven clutch element and the rotatable driving clutch element. A magnetic unit comprises a permanent magnet and an electromagnet. The permanent magnet and the electromagnet are each configured to magnetically affect the working gap. Each of the driving device and the pump wheel are connectable by the hydraulic coupling. The electromagnet is arranged to compensate a magnetic field created by the permanent magnet in the working gap when the electromagnet is activated.
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