Improvements in a variable valve timing system for an...

Details Improvements in a variable valve timing system for an... Improvements in a variable valve timing system for an...

F - Mech Eng,Light,Heat,Weapons

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F01L 1/047 (2006.01) F01L 1/14 (2006.01) F01L 1/46 (2006.01) F01L 13/00 (2006.01) F02M 39/00 (2006.01)

Patent

CA 2257437

The invention relates to improvements in variable valve timing for an internal combustion engine. Specifically, the end design of 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 in order to provide a greater range of valve timing. In addition, the system provides a camshaft and camshaft journal system which allows for axial movement of a cam shaft on the basis of engine rpm and which allows for advancing or retarding a camshaft system on the basis of engine rpm.

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