Timing phaser with offset spool valve

Patent No. 7,699,031

Issued: April 20, 2010
Filed: May 2, 2006
PCT Filed: May 02, 2006
PCT No.: PCT/US2006/016666
371(c)(1),(2),(4) Date: August 22, 2007
PCT Pub. No.: WO2006/119210
PCT Pub. Date: November 09, 2006

Inventors: Smith; Franklin R. (Cortland, NY), Chapman; Peter (Lecco, IT)
Assignee: BorgWarner Inc. (Auburn Hills, MI)


A variable cam timing phaser for an internal combustion engine with at least one camshaft includes a housing (144), a rotor (138), and a phaser control valve (168). The phase control valve is offset from a center axis of rotation through the camshaft of the phaser and may also be parallel to the center axis of rotation. The phaser control valve directs fluid flow to shift the relative angular position of the rotor relative to the housing. The phaser may be cam torque actuated, oil pressure actuated, or torsion assist.

Reference to Related Applications

This application claims an invention which was disclosed in Provisional Application No. 60/676,822, filed May 2, 2005, entitled "TIMING PHASER WITH OFFSET SPOOL VALVE". The benefit under 35 USC 119(e) of the United States provisional application is hereby claimed, and the aforementioned application is hereby incorporated herein by reference.


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