VCT closed-loop control using a two-position on/off solenoid
Patent No. 7,137,369
Issued: November 21, 2006
Inventors: Jiang; Zhenyu (Ithaca, NY)
In a VCT system having a feedback loop including a sensed signal and a set point, a method is provided, which includes the steps of: determining a switch variable which is related to the sensed signal and the set point; computing the switch variable; and according to the value of the switch variable, controlling the operation of an on/off two position solenoid that controls the flow of a control fluid flowing within a VCT phaser. Thereby the control fluid either flows in one direction or another direction by means of using a two-position ON/OFF solenoid for actuating a spool valve which controls the flow direction with the VCT phaser.
REFERENCE TO RELATED APPLICATIONS
This application claims an invention which was disclosed in Provisional Application No. 60/566,218, filed Apr. 28, 2004, entitled "VCT CLOSED-LOOP CONTROL USING A TWO-POSITION ON/OFF SOLENOID". The benefit under 35 USC .sctn.119(e) of the United States provisional application is hereby claimed, and the aforementioned application is hereby incorporated herein by reference.
Go Back for more representative patents.
Home || Intellectual Property || Patents || Trademarks || Copyrights
Brown & Michaels, PC
400 M & T Bank Building
118 North Tioga Street - The Commons
Ithaca, NY 14850
Phone: (607) 256-2000 · Fax: (607) 256-3628
© 2006 Brown & Michaels PC