Valve deactivation system

摘要

A valve deactivation system 10 includes a deactivation rocker arm assembly 12 and a free motion spring assembly 14. The deactivation rocker arm assembly 12 includes an elongate rocker arm 16 defining an aperture 28. A center post 18 is slidingly disposed within the aperture 28. The center post 18 is configured for engaging a valve stem 38 of a valve of an internal combustion engine 26. Coupling means selectively couple together and decouple the center post 18 and the rocker arm 16. The free motion spring assembly 14 includes an inner spring retainer 48 surrounding a portion of the valve stem 38. An outer spring retainer 46 surrounds a portion of the valve stem 38. An inner spring 44 surrounds a portion of the valve stem 38 between the inner spring retainer 48 and a disk cap 50 associated with the valve stem. An outer spring 42 surrounds the inner spring 44.