Method and apparatus for controlling operation of hydraulic idle stop and go (ISG) system using electro hydraulic power steering (EHPS) system
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United States of America Patent
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Apr 9, 2019
Grant Date -
Apr 20, 2017
app pub date -
Sep 12, 2016
filing date -
Oct 15, 2015
priority date (Note) -
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Abstract
A method for controlling operation of a hydraulic idle stop and go (ISG) system using an electro hydraulic power steering (EHPS) system includes measuring a pressure in an accumulator, a steering angle, and a steering angular velocity; determining whether the measured pressure in the accumulator is less than an absolute value of a first reference pressure; determining whether the measured steering angle is less than an absolute value of a reference angle when the measured pressure in the accumulator is less than the absolute value of the first reference pressure; determining whether the measured steering angular velocity is less than an absolute value of a reference angular velocity when the measured steering angle is less than the absolute value of the reference angle; and opening a solenoid valve when the measured steering angular velocity is less than the absolute value of the reference angular velocity.
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