Vehicle brake system
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United States of America Patent
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-
May 10, 2016
Grant Date -
Apr 9, 2015
app pub date -
Oct 2, 2014
filing date -
Oct 4, 2013
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
In a brake-by-wire brake system which includes a motor actuated cylinder configured to produce a brake fluid pressure according to an operating stroke thereof and an electric motor for actuating the motor actuated cylinder, the control mode is normally based on a fluid pressure control, but is switched to a stroke control when the brake pedal is released for the purpose of quickly reducing the operating stroke of the motor actuated cylinder to an initial value. To avoid a sudden increase in the noises of the electric motor at the time of switching from the fluid pressure control to the stroke control, a limit circuit limits electric current supplied to the electric motor when the control mode is switched from the fluid pressure control to the stroke control.
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