Method for controlling an MR-fluid hydraulic mount connected to a vehicle engine
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United States of America Patent
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Issued Date -
Nov 5, 2009
app pub date -
May 1, 2008
filing date -
May 1, 2008
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A method of the invention is for controlling an MR-fluid hydraulic mount connected to a vehicle engine. The mount includes an internal MR-fluid cavity. The mount includes a partition plate assembly partitioning the cavity into first and second MR-fluid chambers. The partition plate assembly has an orifice extending from the first MR-fluid chamber to the second MR-fluid chamber. The mount includes an electric coil positioned to magnetically influence the orifice. The method includes, when the vehicle engine is at idle, determining a reference pressure as a fluid pressure within the second MR-fluid chamber. The method includes, when the vehicle engine is above idle, determining a command electric current to be applied to the electric coil using at least a difference between the reference pressure and a current fluid pressure within the second MR-fluid chamber. The method includes applying the command electric output current to the electric coil.
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