Patent ID: 9303534
Filing Date: 2016-04-05
CPC Classification: F01L

Claim Text:
1. An engine cylinder valve system comprising: a first oil pressurized bore having a stem of a cylinder valve arranged therewithin and in fluidic communication with a control valve assembly, the assembly comprising first and second hydraulic valves and first, second, third, and fourth ports, and the first oil pressurized bore comprising first and second ports opening into a chamber thereof, the first port of the first oil pressurized bore in fluidic communication with the second port of the assembly; a second oil pressurized bore corresponding to the cylinder valve and in fluidic communication with the assembly, the second oil pressurized bore comprising first and second ports opening into a chamber thereof, the second port of the second oil pressurized bore in fluidic communication with the fourth port of the assembly; and a controller configured to adjust a profile of the cylinder valve by axially adjusting each of the hydraulic valves between up and down positions.