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:
Nov. 21, 2006
Filed:
Sep. 03, 2004
Zhenyu Jiang, Ithaca, NY (US);
Zhenyu Jiang, Ithaca, NY (US);
BorgWarner Inc., Auburn Hills, MI (US);
Abstract
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.