Active vehicle chassis dampening systems and methods

A method of calibrating and controlling an active dampening system for a chassis of a vehicle having an engine, the method comprising:

• operating, by a controller, the engine in a cylinder deactivation mode during which at least some of a plurality of cylinders of the engine are deactivated and, during the cylinder deactivation mode;
• and
• during the cylinder deactivation mode:
• receiving, by the controller and from a set of sensors, measured vibrations on first and second frame rails of the chassis, the set of sensors comprising at least one sensor arranged on or proximate to each of the first and second frame rails;
• generating, by the controller, control signals for a set of actuators based on the measured vibration of the first and second frame rails, respectively, the set of actuators comprising at least one actuator arranged on or proximate to each of the first and second frame rails, each actuator being configured to generate a vibrational force in at least one direction;
• and
• outputting, by the controller and to the set of actuators, the control signals, wherein receipt of the control signals cause the set of actuators to generate vibrational forces that dampen the vibration of the first and second frame rails, respectively, to decrease noise/vibration/harshness (NVH) such that an operational range of the cylinder deactivation mode can be extended to thereby increase a fuel economy of the vehicle.