Variable cam timing controls mounted in the camshaft

Patent No. 8,256,393

Issued: September 4, 2012
Filed: June 30, 2008
PCT Filed: June 30, 2008
PCT No.: PCT/US2008/068715
371(c)(1),(2),(4) Date: April 01, 2010
PCT Pub. No.: WO2009/009328

Inventors: Simpson; Roger T. (Ithaca, NY), Butterfield; Roger P. (Trumansburg, NY), Smith; Franklin R. (Cortland, NY)
Assignee: BorgWarner Inc. (Auburn Hills, MI)


An internal combustion engine in which the variable cam timing controls for a variable cam timing mechanism include a variable force solenoid mounted within a hollow portion of the camshaft. The variable force solenoid is maintained in place within the hollow camshaft by a tubular shaft fixed to the engine and a bearing between the solenoid and the variable cam timing mechanism.

Reference to Related Applications

This application claims an invention which was disclosed in Provisional Application No. 60/948,219, filed Jul. 6, 2007 entitled "VARIABLE CAM TIMING CONTROLS MOUNTED IN THE CAMSHAFT". 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.


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