Improvements in variable valve timing systems

Details Improvements in variable valve timing systems Improvements in variable valve timing systems

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F01L 1/047 (2006.01) F01L 1/08 (2006.01) F01L 1/14 (2006.01) F01L 1/16 (2006.01) F01L 1/18 (2006.01) F01L 3/06 (2006.01) F01L 3/22 (2006.01) F02M 57/04 (2006.01) F02M 69/04 (2006.01)

Patent

CA 2315595

A valve lifter or valve stem that provides a fine contact point with a variable profile cam that can enable its movement across the cam to provide a greater range of valve timing. The invention also includes a camshaft and camshaft journal system which allows for axial movement of a camshaft based on engine rpm and which further allows for advancing or retarding a camshaft system based on engine rpm.

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