Method and device for improving charged engines

System for operating a charged internal combustion engine comprising a cylinder and a plurality of independently controllable intake valves for the cylinder, the system comprising:

• the cylinder;
• the plurality of independently controllable intake valves for the cylinder;
• a control module
• monitoring a first timing for the plurality of independently controllable intake valves for the cylinder,
• monitoring operation of the engine,
• determining a delay closing timing for a first intake valve of the independently controllable intake valves for the cylinder to remain open at an end of an intake stroke past bottom dead center to achieve a desired effective compression ratio based upon the monitored operation of the engine,
• controlling the first intake valve based upon the determined delay closing timing for the first intake valve, and
• controlling a second intake valve of the independently controllable intake valves for the cylinder based upon the monitored first timing;
• and
• wherein the delay closing timing for the first intake valve of the independently controllable intake valves is selected to lower an effective compression ratio in the cylinder to achieve the desired effective compression ratio in the cylinder.