Apparatus for controlling a power-assisted steering gear in response to vehicle conditions
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United States of America Patent
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Issued Date -
Jan 28, 2010
app pub date -
Jul 22, 2008
filing date -
Jul 22, 2008
priority date (Note) -
Abandoned
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Abstract
An apparatus (10) for helping to turn steerable wheels (12) of a vehicle comprises a hydraulic power-assisted steering gear (16) having an open center control valve (44). A variable displacement pump (110) supplies the steering gear (16) with hydraulic fluid. A controller (104) controls the pump (84). The controller (104) sends a control signal to the pump (110) to control the displacement of the pump (110).
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