Method and apparatus for driving a solenoid proportional control valve utilized for flow rate control
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United States of America Patent
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Jun 17, 2008
Grant Date -
Jul 14, 2005
app pub date -
Oct 29, 2002
filing date -
Oct 30, 2001
priority date (Note) -
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Abstract
In a method for driving a solenoid proportional control valve (44) used for flow rate control of a common rail system pump adapted to regulate flow rate by regulating the duty ratio of a pulse voltage applied to a solenoid coil (F) of a solenoid (44E), when an operating condition liable to cause hysteresis in the operation of the solenoid proportional control valve (44) is present, the peak value or pulse width of the pulse voltage is temporarily increased to instantaneously boost the driving force of the solenoid (44E), thereby ensuring smooth operation of a piston (44C) and stabilizing the flow rate control.
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