Patent ID: 8919307
Filing Date: 2014-12-30
Classification: F01L

Abstract:
1. A valve train system for opening and closing a combustion valve of an internal combustion engine, said valve train system comprising: a camshaft rotatable about a camshaft axis and having a camshaft lobe; a control shaft rotatable about a control shaft axis and having a control shaft slot eccentric to said control shaft axis; an input rocker configured to engage said camshaft lobe and having a rocker slot; an output rocker configured to engage a valve actuation member which is engaged with said combustion valve; and a rocker pivot shaft having a rocker pivot shaft axis, said rocker pivot shaft being fixed to said output rocker and extending through both said control shaft slot and said rocker slot; wherein rotation of said camshaft causes said input rocker and said output rocker to pivot about said rocker pivot shaft axis; and wherein rotation of said control shaft causes said rocker pivot shaft axis to change position, thereby changing the magnitude that said input rocker and said output rocker pivot about said rocker pivot shaft axis and also changing the magnitude of opening said combustion valve.