The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 17, 2008
Filed:
Oct. 29, 2002
Kazuya Kubota, Saitama, JP;
Tetsuya Kuwayama, Saitama, JP;
Norio Matsuda, Saitama, JP;
Bosch Automotive Systems Corporation, Tokyo, unknown;
Abstract
In a method for driving a solenoid proportional control valve () 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 (E), when an operating condition liable to cause hysteresis in the operation of the solenoid proportional control valve () is present, the peak value or pulse width of the pulse voltage is temporarily increased to instantaneously boost the driving force of the solenoid (E), thereby ensuring smooth operation of a piston (C) and stabilizing the flow rate control.