Control mechanism for cam phaser

Patent No. 7,231,896

Issued: June 19, 2007
Filed: July 21, 2006
Priority: Oct. 10, 2003

Inventors: Mott; Philip J. (Dryden, NY), Mott; Andrew (Dryden, NY), Jiang; Zhenyu (Jersey City, NJ)
Assignee: BorgWarner Inc. (Auburn Hills, MI) 

A VCT phaser having a mechanical feedback in which no elaborate sensors and its concomitant electronic control loop is required. The phaser has center mounted spool valve controlling the flow of control fluid such that when a command positions the same at a predetermined position, passages within the phaser adjusts to a desired position through the mechanical feedback.


This application is a continuation-in-part of application Ser. No. 10/959,736, filed Oct. 6, 2004, entitled "CONTROL MECHANISM FOR CAM PHASER", which claimed an invention disclosed in provisional application No. 60/510,373, filed Oct. 10, 2003, entitled, "CONTROL MECHANISM FOR CAM PHASER," now abandoned.

This application also claims an invention which was disclosed in Provisional Application No. 60/701,265 filed Jul. 21, 2005, entitled "SERVO STYLE VARIABLE CAM TIMING PHASER". The benefit under 35 USC .sctn.119(e) of the U.S. provisional application is hereby claimed, and the aforementioned applications are hereby incorporated herein by reference.

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