Patent ID: 8997706
Filing Date: 2015-04-07
Classification: F01L,Y10T

Abstract:
1. An internal combustion engine valve actuation control arrangement having a hollow camshaft ( 31 ) with at least three independently axially displaceable cam elements ( 10 , 11 , 12 ), and a switch gate ( 13 ) disposed between a first and a second of the at least three independently axially displaceable cam elements ( 10 , 11 ) with axially adjacent gate sections having at least one continuous gate track ( 14 , 15 ) provided for sequentially displacing the at least three independently axially displaceable cam elements ( 10 , 11 , 12 ) one after the other, the switch gate ( 13 ) comprising three switch gate segments each associated with one of the at least three independently axially displaceable cam elements ( 10 , 11 , 12 ), the first and second independently axially displaceable cam elements ( 10 , 11 ) being connected directly to, or part of, the adjacent switch gate segments and the third independently axially displaceable cam element being connected to a third switch gate section ( 22 ) by way of a connecting unit ( 23 ) extending through the hollow camshaft ( 31 ), the at least one continuous gate track ( 14 , 15 ) extending in the at least three switch gate segments ( 16 , 17 , 18 , 19 , 20 , 21 ), each of which is associated with one of the at least three independently axially displaceable cam elements ( 10 , 11 , 12 ).