SYSTEMS AND METHODS FOR CYLINDER DEACTIVATION

摘要

Systems, apparatus, and methods are disclosed that include an internal combustion engine having a plurality of cylinders operable by a valve actuation mechanism with at least two non-zero valve lift profiles. The first non-zero valve lift profile operates the intake valve(s) of each cylinder in response to nominal operating conditions while the exhaust valves are also opened and closed, and the second non-zero valve lift profile operates the intake valve(s) of a portion of the plurality of cylinders in response to a cylinder deactivation condition while the exhaust valve(s) of the portion of the plurality of cylinders are closed.